diff options
Diffstat (limited to 'target/foxboard/patches/cris.patch')
| -rw-r--r-- | target/foxboard/patches/cris.patch | 6556 |
1 files changed, 6491 insertions, 65 deletions
diff --git a/target/foxboard/patches/cris.patch b/target/foxboard/patches/cris.patch index 277e1757d..3c6bca534 100644 --- a/target/foxboard/patches/cris.patch +++ b/target/foxboard/patches/cris.patch @@ -1,7 +1,16 @@ -diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/axisflashmap.c linux-2.6.31.5/arch/cris/arch-v10/drivers/axisflashmap.c ---- linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/axisflashmap.c 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/arch/cris/arch-v10/drivers/axisflashmap.c 2009-11-09 21:10:52.565914436 +0100 -@@ -122,19 +122,19 @@ +diff -Nur linux-2.6.32.orig/arch/cris/arch-v10/drivers/axisflashmap.c linux-2.6.32/arch/cris/arch-v10/drivers/axisflashmap.c +--- linux-2.6.32.orig/arch/cris/arch-v10/drivers/axisflashmap.c 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/arch/cris/arch-v10/drivers/axisflashmap.c 2010-01-10 14:34:37.376309632 +0100 +@@ -113,7 +113,7 @@ + + /* If no partition-table was found, we use this default-set. */ + #define MAX_PARTITIONS 7 +-#define NUM_DEFAULT_PARTITIONS 3 ++#define NUM_DEFAULT_PARTITIONS 4 + + /* + * Default flash size is 2MB. CONFIG_ETRAX_PTABLE_SECTOR is most likely the +@@ -122,19 +122,24 @@ */ static struct mtd_partition axis_default_partitions[NUM_DEFAULT_PARTITIONS] = { { @@ -26,10 +35,15 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/axisflashmap.c linux-2. + .name = "cfgfs", + .size = 0x20000 , + .offset = CONFIG_ETRAX_MTD_SIZE - 0x20000 ++ }, ++ { ++ .name = "linux", ++ .size = CONFIG_ETRAX_MTD_SIZE - 0x20000, ++ .offset = 0 } }; -@@ -281,6 +281,11 @@ +@@ -281,6 +286,11 @@ struct partitiontable_entry *ptable; int use_default_ptable = 1; /* Until proven otherwise. */ const char pmsg[] = " /dev/flash%d at 0x%08x, size 0x%08x\n"; @@ -41,7 +55,7 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/axisflashmap.c linux-2. if (!(mymtd = flash_probe())) { /* There's no reason to use this module if no flash chip can -@@ -292,6 +297,31 @@ +@@ -292,6 +302,31 @@ mymtd->name, mymtd->size); axisflash_mtd = mymtd; } @@ -73,7 +87,7 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/axisflashmap.c linux-2. if (mymtd) { mymtd->owner = THIS_MODULE; -@@ -360,21 +390,6 @@ +@@ -360,21 +395,6 @@ use_default_ptable = !ptable_ok; } @@ -95,7 +109,7 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/axisflashmap.c linux-2. #ifdef CONFIG_ETRAX_AXISFLASHMAP_MTD0WHOLE if (mymtd) { main_partition.size = mymtd->size; -@@ -397,36 +412,6 @@ +@@ -397,36 +417,6 @@ if (err) panic("axisflashmap could not add MTD partitions!\n"); } @@ -132,9 +146,9 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/axisflashmap.c linux-2. return err; } -diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/ds1302.c linux-2.6.31.5/arch/cris/arch-v10/drivers/ds1302.c ---- linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/ds1302.c 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/arch/cris/arch-v10/drivers/ds1302.c 2009-11-09 21:10:52.569915505 +0100 +diff -Nur linux-2.6.32.orig/arch/cris/arch-v10/drivers/ds1302.c linux-2.6.32/arch/cris/arch-v10/drivers/ds1302.c +--- linux-2.6.32.orig/arch/cris/arch-v10/drivers/ds1302.c 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/arch/cris/arch-v10/drivers/ds1302.c 2010-01-10 13:41:59.256309588 +0100 @@ -21,6 +21,7 @@ #include <linux/delay.h> #include <linux/bcd.h> @@ -167,9 +181,9 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/ds1302.c linux-2.6.31.5 return 0; } -diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/gpio.c linux-2.6.31.5/arch/cris/arch-v10/drivers/gpio.c ---- linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/gpio.c 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/arch/cris/arch-v10/drivers/gpio.c 2009-11-09 21:10:52.569915505 +0100 +diff -Nur linux-2.6.32.orig/arch/cris/arch-v10/drivers/gpio.c linux-2.6.32/arch/cris/arch-v10/drivers/gpio.c +--- linux-2.6.32.orig/arch/cris/arch-v10/drivers/gpio.c 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/arch/cris/arch-v10/drivers/gpio.c 2010-01-10 13:41:59.256309588 +0100 @@ -21,6 +21,7 @@ #include <linux/poll.h> #include <linux/init.h> @@ -203,18 +217,18 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/drivers/gpio.c linux-2.6.31.5/a /* Clear all leds */ #if defined (CONFIG_ETRAX_CSP0_LEDS) || defined (CONFIG_ETRAX_PA_LEDS) || defined (CONFIG_ETRAX_PB_LEDS) CRIS_LED_NETWORK_SET(0); -diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/lib/hw_settings.S linux-2.6.31.5/arch/cris/arch-v10/lib/hw_settings.S ---- linux-2.6.31.5.orig/arch/cris/arch-v10/lib/hw_settings.S 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/arch/cris/arch-v10/lib/hw_settings.S 2009-11-09 21:10:52.622221897 +0100 +diff -Nur linux-2.6.32.orig/arch/cris/arch-v10/lib/hw_settings.S linux-2.6.32/arch/cris/arch-v10/lib/hw_settings.S +--- linux-2.6.32.orig/arch/cris/arch-v10/lib/hw_settings.S 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/arch/cris/arch-v10/lib/hw_settings.S 2010-01-10 13:41:59.256309588 +0100 @@ -60,3 +60,5 @@ .dword R_PORT_PB_SET .dword PB_SET_VALUE .dword 0 ; No more register values + .ascii "ACME_PART_MAGIC" + .dword 0xdeadc0de -diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/mm/init.c linux-2.6.31.5/arch/cris/arch-v10/mm/init.c ---- linux-2.6.31.5.orig/arch/cris/arch-v10/mm/init.c 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/arch/cris/arch-v10/mm/init.c 2009-11-09 21:10:52.669914289 +0100 +diff -Nur linux-2.6.32.orig/arch/cris/arch-v10/mm/init.c linux-2.6.32/arch/cris/arch-v10/mm/init.c +--- linux-2.6.32.orig/arch/cris/arch-v10/mm/init.c 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/arch/cris/arch-v10/mm/init.c 2010-01-10 13:41:59.256309588 +0100 @@ -184,6 +184,9 @@ free_area_init_node(0, zones_size, PAGE_OFFSET >> PAGE_SHIFT, 0); @@ -225,9 +239,9 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/arch-v10/mm/init.c linux-2.6.31.5/arch/c /* Initialize remaps of some I/O-ports. It is important that this * is called before any driver is initialized. -diff -Nur linux-2.6.31.5.orig/arch/cris/boot/compressed/Makefile linux-2.6.31.5/arch/cris/boot/compressed/Makefile ---- linux-2.6.31.5.orig/arch/cris/boot/compressed/Makefile 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/arch/cris/boot/compressed/Makefile 2009-11-09 21:10:52.673930723 +0100 +diff -Nur linux-2.6.32.orig/arch/cris/boot/compressed/Makefile linux-2.6.32/arch/cris/boot/compressed/Makefile +--- linux-2.6.32.orig/arch/cris/boot/compressed/Makefile 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/arch/cris/boot/compressed/Makefile 2010-01-10 13:41:59.256309588 +0100 @@ -18,7 +18,7 @@ OBJECTS-$(CONFIG_ETRAX_ARCH_V32) = $(obj)/head_v32.o OBJECTS-$(CONFIG_ETRAX_ARCH_V10) = $(obj)/head_v10.o @@ -237,9 +251,9 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/boot/compressed/Makefile linux-2.6.31.5/ quiet_cmd_image = BUILD $@ cmd_image = cat $(obj)/decompress.bin $(obj)/piggy.gz > $@ -diff -Nur linux-2.6.31.5.orig/arch/cris/boot/compressed/misc.c linux-2.6.31.5/arch/cris/boot/compressed/misc.c ---- linux-2.6.31.5.orig/arch/cris/boot/compressed/misc.c 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/arch/cris/boot/compressed/misc.c 2009-11-09 21:10:52.677915030 +0100 +diff -Nur linux-2.6.32.orig/arch/cris/boot/compressed/misc.c linux-2.6.32/arch/cris/boot/compressed/misc.c +--- linux-2.6.32.orig/arch/cris/boot/compressed/misc.c 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/arch/cris/boot/compressed/misc.c 2010-01-10 13:41:59.256309588 +0100 @@ -106,7 +106,7 @@ static void flush_window(void); @@ -290,9 +304,9 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/boot/compressed/misc.c linux-2.6.31.5/ar - puts("Done. Now booting the kernel\n"); + putstr("Done. Now booting the kernel\n"); } -diff -Nur linux-2.6.31.5.orig/arch/cris/boot/Makefile linux-2.6.31.5/arch/cris/boot/Makefile ---- linux-2.6.31.5.orig/arch/cris/boot/Makefile 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/arch/cris/boot/Makefile 2009-11-09 21:10:52.729928085 +0100 +diff -Nur linux-2.6.32.orig/arch/cris/boot/Makefile linux-2.6.32/arch/cris/boot/Makefile +--- linux-2.6.32.orig/arch/cris/boot/Makefile 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/arch/cris/boot/Makefile 2010-01-10 13:41:59.256309588 +0100 @@ -5,7 +5,7 @@ objcopyflags-$(CONFIG_ETRAX_ARCH_V10) += -R .note -R .comment objcopyflags-$(CONFIG_ETRAX_ARCH_V32) += --remove-section=.bss @@ -310,9 +324,9 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/boot/Makefile linux-2.6.31.5/arch/cris/b $(obj)/zImage: $(obj)/compressed/vmlinux @cp $< $@ -diff -Nur linux-2.6.31.5.orig/arch/cris/Kconfig linux-2.6.31.5/arch/cris/Kconfig ---- linux-2.6.31.5.orig/arch/cris/Kconfig 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/arch/cris/Kconfig 2009-11-09 21:10:52.761915122 +0100 +diff -Nur linux-2.6.32.orig/arch/cris/Kconfig linux-2.6.32/arch/cris/Kconfig +--- linux-2.6.32.orig/arch/cris/Kconfig 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/arch/cris/Kconfig 2010-01-10 13:41:59.256309588 +0100 @@ -168,6 +168,12 @@ help Size of DRAM (decimal in MB) typically 2, 8 or 16. @@ -347,9 +361,9 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/Kconfig linux-2.6.31.5/arch/cris/Kconfig source "drivers/net/Kconfig" source "drivers/i2c/Kconfig" -diff -Nur linux-2.6.31.5.orig/arch/cris/Makefile linux-2.6.31.5/arch/cris/Makefile ---- linux-2.6.31.5.orig/arch/cris/Makefile 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/arch/cris/Makefile 2009-11-09 21:12:38.534695929 +0100 +diff -Nur linux-2.6.32.orig/arch/cris/Makefile linux-2.6.32/arch/cris/Makefile +--- linux-2.6.32.orig/arch/cris/Makefile 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/arch/cris/Makefile 2010-01-10 13:41:59.256309588 +0100 @@ -40,10 +40,10 @@ LD = $(CROSS_COMPILE)ld -mcrislinux @@ -363,10 +377,10 @@ diff -Nur linux-2.6.31.5.orig/arch/cris/Makefile linux-2.6.31.5/arch/cris/Makefi KBUILD_CPPFLAGS += $(inc) ifdef CONFIG_FRAME_POINTER -diff -Nur linux-2.6.31.5.orig/drivers/net/cris/eth_v10.c linux-2.6.31.5/drivers/net/cris/eth_v10.c ---- linux-2.6.31.5.orig/drivers/net/cris/eth_v10.c 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/drivers/net/cris/eth_v10.c 2009-11-09 21:10:52.857914224 +0100 -@@ -1711,7 +1711,7 @@ +diff -Nur linux-2.6.32.orig/drivers/net/cris/eth_v10.c linux-2.6.32/drivers/net/cris/eth_v10.c +--- linux-2.6.32.orig/drivers/net/cris/eth_v10.c 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/drivers/net/cris/eth_v10.c 2010-01-10 13:41:59.256309588 +0100 +@@ -1725,7 +1725,7 @@ static void e100_netpoll(struct net_device* netdev) { @@ -375,9 +389,1773 @@ diff -Nur linux-2.6.31.5.orig/drivers/net/cris/eth_v10.c linux-2.6.31.5/drivers/ } #endif -diff -Nur linux-2.6.31.5.orig/drivers/serial/crisv10.c linux-2.6.31.5/drivers/serial/crisv10.c ---- linux-2.6.31.5.orig/drivers/serial/crisv10.c 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/drivers/serial/crisv10.c 2009-11-10 07:59:31.341915786 +0100 +diff -Nur linux-2.6.32.orig/drivers/net/cris/eth_v10.c.orig linux-2.6.32/drivers/net/cris/eth_v10.c.orig +--- linux-2.6.32.orig/drivers/net/cris/eth_v10.c.orig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.32/drivers/net/cris/eth_v10.c.orig 2009-12-03 04:51:21.000000000 +0100 +@@ -0,0 +1,1760 @@ ++/* ++ * e100net.c: A network driver for the ETRAX 100LX network controller. ++ * ++ * Copyright (c) 1998-2002 Axis Communications AB. ++ * ++ * The outline of this driver comes from skeleton.c. ++ * ++ */ ++ ++ ++#include <linux/module.h> ++ ++#include <linux/kernel.h> ++#include <linux/delay.h> ++#include <linux/types.h> ++#include <linux/fcntl.h> ++#include <linux/interrupt.h> ++#include <linux/ptrace.h> ++#include <linux/ioport.h> ++#include <linux/in.h> ++#include <linux/slab.h> ++#include <linux/string.h> ++#include <linux/spinlock.h> ++#include <linux/errno.h> ++#include <linux/init.h> ++#include <linux/bitops.h> ++ ++#include <linux/if.h> ++#include <linux/mii.h> ++#include <linux/netdevice.h> ++#include <linux/etherdevice.h> ++#include <linux/skbuff.h> ++#include <linux/ethtool.h> ++ ++#include <arch/svinto.h>/* DMA and register descriptions */ ++#include <asm/io.h> /* CRIS_LED_* I/O functions */ ++#include <asm/irq.h> ++#include <asm/dma.h> ++#include <asm/system.h> ++#include <asm/ethernet.h> ++#include <asm/cache.h> ++#include <arch/io_interface_mux.h> ++ ++//#define ETHDEBUG ++#define D(x) ++ ++/* ++ * The name of the card. Is used for messages and in the requests for ++ * io regions, irqs and dma channels ++ */ ++ ++static const char* cardname = "ETRAX 100LX built-in ethernet controller"; ++ ++/* A default ethernet address. Highlevel SW will set the real one later */ ++ ++static struct sockaddr default_mac = { ++ 0, ++ { 0x00, 0x40, 0x8C, 0xCD, 0x00, 0x00 } ++}; ++ ++/* Information that need to be kept for each board. */ ++struct net_local { ++ struct net_device_stats stats; ++ struct mii_if_info mii_if; ++ ++ /* Tx control lock. This protects the transmit buffer ring ++ * state along with the "tx full" state of the driver. This ++ * means all netif_queue flow control actions are protected ++ * by this lock as well. ++ */ ++ spinlock_t lock; ++ ++ spinlock_t led_lock; /* Protect LED state */ ++ spinlock_t transceiver_lock; /* Protect transceiver state. */ ++}; ++ ++typedef struct etrax_eth_descr ++{ ++ etrax_dma_descr descr; ++ struct sk_buff* skb; ++} etrax_eth_descr; ++ ++/* Some transceivers requires special handling */ ++struct transceiver_ops ++{ ++ unsigned int oui; ++ void (*check_speed)(struct net_device* dev); ++ void (*check_duplex)(struct net_device* dev); ++}; ++ ++/* Duplex settings */ ++enum duplex ++{ ++ half, ++ full, ++ autoneg ++}; ++ ++/* Dma descriptors etc. */ ++ ++#define MAX_MEDIA_DATA_SIZE 1522 ++ ++#define MIN_PACKET_LEN 46 ++#define ETHER_HEAD_LEN 14 ++ ++/* ++** MDIO constants. ++*/ ++#define MDIO_START 0x1 ++#define MDIO_READ 0x2 ++#define MDIO_WRITE 0x1 ++#define MDIO_PREAMBLE 0xfffffffful ++ ++/* Broadcom specific */ ++#define MDIO_AUX_CTRL_STATUS_REG 0x18 ++#define MDIO_BC_FULL_DUPLEX_IND 0x1 ++#define MDIO_BC_SPEED 0x2 ++ ++/* TDK specific */ ++#define MDIO_TDK_DIAGNOSTIC_REG 18 ++#define MDIO_TDK_DIAGNOSTIC_RATE 0x400 ++#define MDIO_TDK_DIAGNOSTIC_DPLX 0x800 ++ ++/*Intel LXT972A specific*/ ++#define MDIO_INT_STATUS_REG_2 0x0011 ++#define MDIO_INT_FULL_DUPLEX_IND (1 << 9) ++#define MDIO_INT_SPEED (1 << 14) ++ ++/* Network flash constants */ ++#define NET_FLASH_TIME (HZ/50) /* 20 ms */ ++#define NET_FLASH_PAUSE (HZ/100) /* 10 ms */ ++#define NET_LINK_UP_CHECK_INTERVAL (2*HZ) /* 2 s */ ++#define NET_DUPLEX_CHECK_INTERVAL (2*HZ) /* 2 s */ ++ ++#define NO_NETWORK_ACTIVITY 0 ++#define NETWORK_ACTIVITY 1 ++ ++#define NBR_OF_RX_DESC 32 ++#define NBR_OF_TX_DESC 16 ++ ++/* Large packets are sent directly to upper layers while small packets are */ ++/* copied (to reduce memory waste). The following constant decides the breakpoint */ ++#define RX_COPYBREAK 256 ++ ++/* Due to a chip bug we need to flush the cache when descriptors are returned */ ++/* to the DMA. To decrease performance impact we return descriptors in chunks. */ ++/* The following constant determines the number of descriptors to return. */ ++#define RX_QUEUE_THRESHOLD NBR_OF_RX_DESC/2 ++ ++#define GET_BIT(bit,val) (((val) >> (bit)) & 0x01) ++ ++/* Define some macros to access ETRAX 100 registers */ ++#define SETF(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \ ++ IO_FIELD_(reg##_, field##_, val) ++#define SETS(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \ ++ IO_STATE_(reg##_, field##_, _##val) ++ ++static etrax_eth_descr *myNextRxDesc; /* Points to the next descriptor to ++ to be processed */ ++static etrax_eth_descr *myLastRxDesc; /* The last processed descriptor */ ++ ++static etrax_eth_descr RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned(32))); ++ ++static etrax_eth_descr* myFirstTxDesc; /* First packet not yet sent */ ++static etrax_eth_descr* myLastTxDesc; /* End of send queue */ ++static etrax_eth_descr* myNextTxDesc; /* Next descriptor to use */ ++static etrax_eth_descr TxDescList[NBR_OF_TX_DESC] __attribute__ ((aligned(32))); ++ ++static unsigned int network_rec_config_shadow = 0; ++ ++static unsigned int network_tr_ctrl_shadow = 0; ++ ++/* Network speed indication. */ ++static DEFINE_TIMER(speed_timer, NULL, 0, 0); ++static DEFINE_TIMER(clear_led_timer, NULL, 0, 0); ++static int current_speed; /* Speed read from transceiver */ ++static int current_speed_selection; /* Speed selected by user */ ++static unsigned long led_next_time; ++static int led_active; ++static int rx_queue_len; ++ ++/* Duplex */ ++static DEFINE_TIMER(duplex_timer, NULL, 0, 0); ++static int full_duplex; ++static enum duplex current_duplex; ++ ++/* Index to functions, as function prototypes. */ ++ ++static int etrax_ethernet_init(void); ++ ++static int e100_open(struct net_device *dev); ++static int e100_set_mac_address(struct net_device *dev, void *addr); ++static int e100_send_packet(struct sk_buff *skb, struct net_device *dev); ++static irqreturn_t e100rxtx_interrupt(int irq, void *dev_id); ++static irqreturn_t e100nw_interrupt(int irq, void *dev_id); ++static void e100_rx(struct net_device *dev); ++static int e100_close(struct net_device *dev); ++static int e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); ++static int e100_set_config(struct net_device* dev, struct ifmap* map); ++static void e100_tx_timeout(struct net_device *dev); ++static struct net_device_stats *e100_get_stats(struct net_device *dev); ++static void set_multicast_list(struct net_device *dev); ++static void e100_hardware_send_packet(struct net_local* np, char *buf, int length); ++static void update_rx_stats(struct net_device_stats *); ++static void update_tx_stats(struct net_device_stats *); ++static int e100_probe_transceiver(struct net_device* dev); ++ ++static void e100_check_speed(unsigned long priv); ++static void e100_set_speed(struct net_device* dev, unsigned long speed); ++static void e100_check_duplex(unsigned long priv); ++static void e100_set_duplex(struct net_device* dev, enum duplex); ++static void e100_negotiate(struct net_device* dev); ++ ++static int e100_get_mdio_reg(struct net_device *dev, int phy_id, int location); ++static void e100_set_mdio_reg(struct net_device *dev, int phy_id, int location, int value); ++ ++static void e100_send_mdio_cmd(unsigned short cmd, int write_cmd); ++static void e100_send_mdio_bit(unsigned char bit); ++static unsigned char e100_receive_mdio_bit(void); ++static void e100_reset_transceiver(struct net_device* net); ++ ++static void e100_clear_network_leds(unsigned long dummy); ++static void e100_set_network_leds(int active); ++ ++static const struct ethtool_ops e100_ethtool_ops; ++#if defined(CONFIG_ETRAX_NO_PHY) ++static void dummy_check_speed(struct net_device* dev); ++static void dummy_check_duplex(struct net_device* dev); ++#else ++static void broadcom_check_speed(struct net_device* dev); ++static void broadcom_check_duplex(struct net_device* dev); ++static void tdk_check_speed(struct net_device* dev); ++static void tdk_check_duplex(struct net_device* dev); ++static void intel_check_speed(struct net_device* dev); ++static void intel_check_duplex(struct net_device* dev); ++static void generic_check_speed(struct net_device* dev); ++static void generic_check_duplex(struct net_device* dev); ++#endif ++#ifdef CONFIG_NET_POLL_CONTROLLER ++static void e100_netpoll(struct net_device* dev); ++#endif ++ ++static int autoneg_normal = 1; ++ ++struct transceiver_ops transceivers[] = ++{ ++#if defined(CONFIG_ETRAX_NO_PHY) ++ {0x0000, dummy_check_speed, dummy_check_duplex} /* Dummy */ ++#else ++ {0x1018, broadcom_check_speed, broadcom_check_duplex}, /* Broadcom */ ++ {0xC039, tdk_check_speed, tdk_check_duplex}, /* TDK 2120 */ ++ {0x039C, tdk_check_speed, tdk_check_duplex}, /* TDK 2120C */ ++ {0x04de, intel_check_speed, intel_check_duplex}, /* Intel LXT972A*/ ++ {0x0000, generic_check_speed, generic_check_duplex} /* Generic, must be last */ ++#endif ++}; ++ ++struct transceiver_ops* transceiver = &transceivers[0]; ++ ++static const struct net_device_ops e100_netdev_ops = { ++ .ndo_open = e100_open, ++ .ndo_stop = e100_close, ++ .ndo_start_xmit = e100_send_packet, ++ .ndo_tx_timeout = e100_tx_timeout, ++ .ndo_get_stats = e100_get_stats, ++ .ndo_set_multicast_list = set_multicast_list, ++ .ndo_do_ioctl = e100_ioctl, ++ .ndo_set_mac_address = e100_set_mac_address, ++ .ndo_validate_addr = eth_validate_addr, ++ .ndo_change_mtu = eth_change_mtu, ++ .ndo_set_config = e100_set_config, ++#ifdef CONFIG_NET_POLL_CONTROLLER ++ .ndo_poll_controller = e100_netpoll, ++#endif ++}; ++ ++#define tx_done(dev) (*R_DMA_CH0_CMD == 0) ++ ++/* ++ * Check for a network adaptor of this type, and return '0' if one exists. ++ * If dev->base_addr == 0, probe all likely locations. ++ * If dev->base_addr == 1, always return failure. ++ * If dev->base_addr == 2, allocate space for the device and return success ++ * (detachable devices only). ++ */ ++ ++static int __init ++etrax_ethernet_init(void) ++{ ++ struct net_device *dev; ++ struct net_local* np; ++ int i, err; ++ ++ printk(KERN_INFO ++ "ETRAX 100LX 10/100MBit ethernet v2.0 (c) 1998-2007 Axis Communications AB\n"); ++ ++ if (cris_request_io_interface(if_eth, cardname)) { ++ printk(KERN_CRIT "etrax_ethernet_init failed to get IO interface\n"); ++ return -EBUSY; ++ } ++ ++ dev = alloc_etherdev(sizeof(struct net_local)); ++ if (!dev) ++ return -ENOMEM; ++ ++ np = netdev_priv(dev); ++ ++ /* we do our own locking */ ++ dev->features |= NETIF_F_LLTX; ++ ++ dev->base_addr = (unsigned int)R_NETWORK_SA_0; /* just to have something to show */ ++ ++ /* now setup our etrax specific stuff */ ++ ++ dev->irq = NETWORK_DMA_RX_IRQ_NBR; /* we really use DMATX as well... */ ++ dev->dma = NETWORK_RX_DMA_NBR; ++ ++ /* fill in our handlers so the network layer can talk to us in the future */ ++ ++ dev->ethtool_ops = &e100_ethtool_ops; ++ dev->netdev_ops = &e100_netdev_ops; ++ ++ spin_lock_init(&np->lock); ++ spin_lock_init(&np->led_lock); ++ spin_lock_init(&np->transceiver_lock); ++ ++ /* Initialise the list of Etrax DMA-descriptors */ ++ ++ /* Initialise receive descriptors */ ++ ++ for (i = 0; i < NBR_OF_RX_DESC; i++) { ++ /* Allocate two extra cachelines to make sure that buffer used ++ * by DMA does not share cacheline with any other data (to ++ * avoid cache bug) ++ */ ++ RxDescList[i].skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); ++ if (!RxDescList[i].skb) ++ return -ENOMEM; ++ RxDescList[i].descr.ctrl = 0; ++ RxDescList[i].descr.sw_len = MAX_MEDIA_DATA_SIZE; ++ RxDescList[i].descr.next = virt_to_phys(&RxDescList[i + 1]); ++ RxDescList[i].descr.buf = L1_CACHE_ALIGN(virt_to_phys(RxDescList[i].skb->data)); ++ RxDescList[i].descr.status = 0; ++ RxDescList[i].descr.hw_len = 0; ++ prepare_rx_descriptor(&RxDescList[i].descr); ++ } ++ ++ RxDescList[NBR_OF_RX_DESC - 1].descr.ctrl = d_eol; ++ RxDescList[NBR_OF_RX_DESC - 1].descr.next = virt_to_phys(&RxDescList[0]); ++ rx_queue_len = 0; ++ ++ /* Initialize transmit descriptors */ ++ for (i = 0; i < NBR_OF_TX_DESC; i++) { ++ TxDescList[i].descr.ctrl = 0; ++ TxDescList[i].descr.sw_len = 0; ++ TxDescList[i].descr.next = virt_to_phys(&TxDescList[i + 1].descr); ++ TxDescList[i].descr.buf = 0; ++ TxDescList[i].descr.status = 0; ++ TxDescList[i].descr.hw_len = 0; ++ TxDescList[i].skb = 0; ++ } ++ ++ TxDescList[NBR_OF_TX_DESC - 1].descr.ctrl = d_eol; ++ TxDescList[NBR_OF_TX_DESC - 1].descr.next = virt_to_phys(&TxDescList[0].descr); ++ ++ /* Initialise initial pointers */ ++ ++ myNextRxDesc = &RxDescList[0]; ++ myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; ++ myFirstTxDesc = &TxDescList[0]; ++ myNextTxDesc = &TxDescList[0]; ++ myLastTxDesc = &TxDescList[NBR_OF_TX_DESC - 1]; ++ ++ /* Register device */ ++ err = register_netdev(dev); ++ if (err) { ++ free_netdev(dev); ++ return err; ++ } ++ ++ /* set the default MAC address */ ++ ++ e100_set_mac_address(dev, &default_mac); ++ ++ /* Initialize speed indicator stuff. */ ++ ++ current_speed = 10; ++ current_speed_selection = 0; /* Auto */ ++ speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; ++ speed_timer.data = (unsigned long)dev; ++ speed_timer.function = e100_check_speed; ++ ++ clear_led_timer.function = e100_clear_network_leds; ++ clear_led_timer.data = (unsigned long)dev; ++ ++ full_duplex = 0; ++ current_duplex = autoneg; ++ duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; ++ duplex_timer.data = (unsigned long)dev; ++ duplex_timer.function = e100_check_duplex; ++ ++ /* Initialize mii interface */ ++ np->mii_if.phy_id_mask = 0x1f; ++ np->mii_if.reg_num_mask = 0x1f; ++ np->mii_if.dev = dev; ++ np->mii_if.mdio_read = e100_get_mdio_reg; ++ np->mii_if.mdio_write = e100_set_mdio_reg; ++ ++ /* Initialize group address registers to make sure that no */ ++ /* unwanted addresses are matched */ ++ *R_NETWORK_GA_0 = 0x00000000; ++ *R_NETWORK_GA_1 = 0x00000000; ++ ++ /* Initialize next time the led can flash */ ++ led_next_time = jiffies; ++ return 0; ++} ++ ++/* set MAC address of the interface. called from the core after a ++ * SIOCSIFADDR ioctl, and from the bootup above. ++ */ ++ ++static int ++e100_set_mac_address(struct net_device *dev, void *p) ++{ ++ struct net_local *np = netdev_priv(dev); ++ struct sockaddr *addr = p; ++ ++ spin_lock(&np->lock); /* preemption protection */ ++ ++ /* remember it */ ++ ++ memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); ++ ++ /* Write it to the hardware. ++ * Note the way the address is wrapped: ++ * *R_NETWORK_SA_0 = a0_0 | (a0_1 << 8) | (a0_2 << 16) | (a0_3 << 24); ++ * *R_NETWORK_SA_1 = a0_4 | (a0_5 << 8); ++ */ ++ ++ *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) | ++ (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24); ++ *R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8); ++ *R_NETWORK_SA_2 = 0; ++ ++ /* show it in the log as well */ ++ ++ printk(KERN_INFO "%s: changed MAC to %pM\n", dev->name, dev->dev_addr); ++ ++ spin_unlock(&np->lock); ++ ++ return 0; ++} ++ ++/* ++ * Open/initialize the board. This is called (in the current kernel) ++ * sometime after booting when the 'ifconfig' program is run. ++ * ++ * This routine should set everything up anew at each open, even ++ * registers that "should" only need to be set once at boot, so that ++ * there is non-reboot way to recover if something goes wrong. ++ */ ++ ++static int ++e100_open(struct net_device *dev) ++{ ++ unsigned long flags; ++ ++ /* enable the MDIO output pin */ ++ ++ *R_NETWORK_MGM_CTRL = IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable); ++ ++ *R_IRQ_MASK0_CLR = ++ IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) | ++ IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) | ++ IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr); ++ ++ /* clear dma0 and 1 eop and descr irq masks */ ++ *R_IRQ_MASK2_CLR = ++ IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) | ++ IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | ++ IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) | ++ IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); ++ ++ /* Reset and wait for the DMA channels */ ++ ++ RESET_DMA(NETWORK_TX_DMA_NBR); ++ RESET_DMA(NETWORK_RX_DMA_NBR); ++ WAIT_DMA(NETWORK_TX_DMA_NBR); ++ WAIT_DMA(NETWORK_RX_DMA_NBR); ++ ++ /* Initialise the etrax network controller */ ++ ++ /* allocate the irq corresponding to the receiving DMA */ ++ ++ if (request_irq(NETWORK_DMA_RX_IRQ_NBR, e100rxtx_interrupt, ++ IRQF_SAMPLE_RANDOM, cardname, (void *)dev)) { ++ goto grace_exit0; ++ } ++ ++ /* allocate the irq corresponding to the transmitting DMA */ ++ ++ if (request_irq(NETWORK_DMA_TX_IRQ_NBR, e100rxtx_interrupt, 0, ++ cardname, (void *)dev)) { ++ goto grace_exit1; ++ } ++ ++ /* allocate the irq corresponding to the network errors etc */ ++ ++ if (request_irq(NETWORK_STATUS_IRQ_NBR, e100nw_interrupt, 0, ++ cardname, (void *)dev)) { ++ goto grace_exit2; ++ } ++ ++ /* ++ * Always allocate the DMA channels after the IRQ, ++ * and clean up on failure. ++ */ ++ ++ if (cris_request_dma(NETWORK_TX_DMA_NBR, ++ cardname, ++ DMA_VERBOSE_ON_ERROR, ++ dma_eth)) { ++ goto grace_exit3; ++ } ++ ++ if (cris_request_dma(NETWORK_RX_DMA_NBR, ++ cardname, ++ DMA_VERBOSE_ON_ERROR, ++ dma_eth)) { ++ goto grace_exit4; ++ } ++ ++ /* give the HW an idea of what MAC address we want */ ++ ++ *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) | ++ (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24); ++ *R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8); ++ *R_NETWORK_SA_2 = 0; ++ ++#if 0 ++ /* use promiscuous mode for testing */ ++ *R_NETWORK_GA_0 = 0xffffffff; ++ *R_NETWORK_GA_1 = 0xffffffff; ++ ++ *R_NETWORK_REC_CONFIG = 0xd; /* broadcast rec, individ. rec, ma0 enabled */ ++#else ++ SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, max_size, size1522); ++ SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, broadcast, receive); ++ SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, ma0, enable); ++ SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex); ++ *R_NETWORK_REC_CONFIG = network_rec_config_shadow; ++#endif ++ ++ *R_NETWORK_GEN_CONFIG = ++ IO_STATE(R_NETWORK_GEN_CONFIG, phy, mii_clk) | ++ IO_STATE(R_NETWORK_GEN_CONFIG, enable, on); ++ ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, delay, none); ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cancel, dont); ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cd, enable); ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, retry, enable); ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, pad, enable); ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, crc, enable); ++ *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; ++ ++ local_irq_save(flags); ++ ++ /* enable the irq's for ethernet DMA */ ++ ++ *R_IRQ_MASK2_SET = ++ IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) | ++ IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set); ++ ++ *R_IRQ_MASK0_SET = ++ IO_STATE(R_IRQ_MASK0_SET, overrun, set) | ++ IO_STATE(R_IRQ_MASK0_SET, underrun, set) | ++ IO_STATE(R_IRQ_MASK0_SET, excessive_col, set); ++ ++ /* make sure the irqs are cleared */ ++ ++ *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); ++ *R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do); ++ ++ /* make sure the rec and transmit error counters are cleared */ ++ ++ (void)*R_REC_COUNTERS; /* dummy read */ ++ (void)*R_TR_COUNTERS; /* dummy read */ ++ ++ /* start the receiving DMA channel so we can receive packets from now on */ ++ ++ *R_DMA_CH1_FIRST = virt_to_phys(myNextRxDesc); ++ *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, start); ++ ++ /* Set up transmit DMA channel so it can be restarted later */ ++ ++ *R_DMA_CH0_FIRST = 0; ++ *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); ++ netif_start_queue(dev); ++ ++ local_irq_restore(flags); ++ ++ /* Probe for transceiver */ ++ if (e100_probe_transceiver(dev)) ++ goto grace_exit5; ++ ++ /* Start duplex/speed timers */ ++ add_timer(&speed_timer); ++ add_timer(&duplex_timer); ++ ++ /* We are now ready to accept transmit requeusts from ++ * the queueing layer of the networking. ++ */ ++ netif_carrier_on(dev); ++ ++ return 0; ++ ++grace_exit5: ++ cris_free_dma(NETWORK_RX_DMA_NBR, cardname); ++grace_exit4: ++ cris_free_dma(NETWORK_TX_DMA_NBR, cardname); ++grace_exit3: ++ free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev); ++grace_exit2: ++ free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev); ++grace_exit1: ++ free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev); ++grace_exit0: ++ return -EAGAIN; ++} ++ ++#if defined(CONFIG_ETRAX_NO_PHY) ++static void ++dummy_check_speed(struct net_device* dev) ++{ ++ current_speed = 100; ++} ++#else ++static void ++generic_check_speed(struct net_device* dev) ++{ ++ unsigned long data; ++ struct net_local *np = netdev_priv(dev); ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE); ++ if ((data & ADVERTISE_100FULL) || ++ (data & ADVERTISE_100HALF)) ++ current_speed = 100; ++ else ++ current_speed = 10; ++} ++ ++static void ++tdk_check_speed(struct net_device* dev) ++{ ++ unsigned long data; ++ struct net_local *np = netdev_priv(dev); ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, ++ MDIO_TDK_DIAGNOSTIC_REG); ++ current_speed = (data & MDIO_TDK_DIAGNOSTIC_RATE ? 100 : 10); ++} ++ ++static void ++broadcom_check_speed(struct net_device* dev) ++{ ++ unsigned long data; ++ struct net_local *np = netdev_priv(dev); ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, ++ MDIO_AUX_CTRL_STATUS_REG); ++ current_speed = (data & MDIO_BC_SPEED ? 100 : 10); ++} ++ ++static void ++intel_check_speed(struct net_device* dev) ++{ ++ unsigned long data; ++ struct net_local *np = netdev_priv(dev); ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, ++ MDIO_INT_STATUS_REG_2); ++ current_speed = (data & MDIO_INT_SPEED ? 100 : 10); ++} ++#endif ++static void ++e100_check_speed(unsigned long priv) ++{ ++ struct net_device* dev = (struct net_device*)priv; ++ struct net_local *np = netdev_priv(dev); ++ static int led_initiated = 0; ++ unsigned long data; ++ int old_speed = current_speed; ++ ++ spin_lock(&np->transceiver_lock); ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMSR); ++ if (!(data & BMSR_LSTATUS)) { ++ current_speed = 0; ++ } else { ++ transceiver->check_speed(dev); ++ } ++ ++ spin_lock(&np->led_lock); ++ if ((old_speed != current_speed) || !led_initiated) { ++ led_initiated = 1; ++ e100_set_network_leds(NO_NETWORK_ACTIVITY); ++ if (current_speed) ++ netif_carrier_on(dev); ++ else ++ netif_carrier_off(dev); ++ } ++ spin_unlock(&np->led_lock); ++ ++ /* Reinitialize the timer. */ ++ speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; ++ add_timer(&speed_timer); ++ ++ spin_unlock(&np->transceiver_lock); ++} ++ ++static void ++e100_negotiate(struct net_device* dev) ++{ ++ struct net_local *np = netdev_priv(dev); ++ unsigned short data = e100_get_mdio_reg(dev, np->mii_if.phy_id, ++ MII_ADVERTISE); ++ ++ /* Discard old speed and duplex settings */ ++ data &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL | ++ ADVERTISE_10HALF | ADVERTISE_10FULL); ++ ++ switch (current_speed_selection) { ++ case 10: ++ if (current_duplex == full) ++ data |= ADVERTISE_10FULL; ++ else if (current_duplex == half) ++ data |= ADVERTISE_10HALF; ++ else ++ data |= ADVERTISE_10HALF | ADVERTISE_10FULL; ++ break; ++ ++ case 100: ++ if (current_duplex == full) ++ data |= ADVERTISE_100FULL; ++ else if (current_duplex == half) ++ data |= ADVERTISE_100HALF; ++ else ++ data |= ADVERTISE_100HALF | ADVERTISE_100FULL; ++ break; ++ ++ case 0: /* Auto */ ++ if (current_duplex == full) ++ data |= ADVERTISE_100FULL | ADVERTISE_10FULL; ++ else if (current_duplex == half) ++ data |= ADVERTISE_100HALF | ADVERTISE_10HALF; ++ else ++ data |= ADVERTISE_10HALF | ADVERTISE_10FULL | ++ ADVERTISE_100HALF | ADVERTISE_100FULL; ++ break; ++ ++ default: /* assume autoneg speed and duplex */ ++ data |= ADVERTISE_10HALF | ADVERTISE_10FULL | ++ ADVERTISE_100HALF | ADVERTISE_100FULL; ++ break; ++ } ++ ++ e100_set_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE, data); ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR); ++ if (autoneg_normal) { ++ /* Renegotiate with link partner */ ++ data |= BMCR_ANENABLE | BMCR_ANRESTART; ++ } else { ++ /* Don't negotiate speed or duplex */ ++ data &= ~(BMCR_ANENABLE | BMCR_ANRESTART); ++ ++ /* Set speed and duplex static */ ++ if (current_speed_selection == 10) ++ data &= ~BMCR_SPEED100; ++ else ++ data |= BMCR_SPEED100; ++ ++ if (current_duplex != full) ++ data &= ~BMCR_FULLDPLX; ++ else ++ data |= BMCR_FULLDPLX; ++ } ++ e100_set_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR, data); ++} ++ ++static void ++e100_set_speed(struct net_device* dev, unsigned long speed) ++{ ++ struct net_local *np = netdev_priv(dev); ++ ++ spin_lock(&np->transceiver_lock); ++ if (speed != current_speed_selection) { ++ current_speed_selection = speed; ++ e100_negotiate(dev); ++ } ++ spin_unlock(&np->transceiver_lock); ++} ++ ++static void ++e100_check_duplex(unsigned long priv) ++{ ++ struct net_device *dev = (struct net_device *)priv; ++ struct net_local *np = netdev_priv(dev); ++ int old_duplex; ++ ++ spin_lock(&np->transceiver_lock); ++ old_duplex = full_duplex; ++ transceiver->check_duplex(dev); ++ if (old_duplex != full_duplex) { ++ /* Duplex changed */ ++ SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex); ++ *R_NETWORK_REC_CONFIG = network_rec_config_shadow; ++ } ++ ++ /* Reinitialize the timer. */ ++ duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; ++ add_timer(&duplex_timer); ++ np->mii_if.full_duplex = full_duplex; ++ spin_unlock(&np->transceiver_lock); ++} ++#if defined(CONFIG_ETRAX_NO_PHY) ++static void ++dummy_check_duplex(struct net_device* dev) ++{ ++ full_duplex = 1; ++} ++#else ++static void ++generic_check_duplex(struct net_device* dev) ++{ ++ unsigned long data; ++ struct net_local *np = netdev_priv(dev); ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE); ++ if ((data & ADVERTISE_10FULL) || ++ (data & ADVERTISE_100FULL)) ++ full_duplex = 1; ++ else ++ full_duplex = 0; ++} ++ ++static void ++tdk_check_duplex(struct net_device* dev) ++{ ++ unsigned long data; ++ struct net_local *np = netdev_priv(dev); ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, ++ MDIO_TDK_DIAGNOSTIC_REG); ++ full_duplex = (data & MDIO_TDK_DIAGNOSTIC_DPLX) ? 1 : 0; ++} ++ ++static void ++broadcom_check_duplex(struct net_device* dev) ++{ ++ unsigned long data; ++ struct net_local *np = netdev_priv(dev); ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, ++ MDIO_AUX_CTRL_STATUS_REG); ++ full_duplex = (data & MDIO_BC_FULL_DUPLEX_IND) ? 1 : 0; ++} ++ ++static void ++intel_check_duplex(struct net_device* dev) ++{ ++ unsigned long data; ++ struct net_local *np = netdev_priv(dev); ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, ++ MDIO_INT_STATUS_REG_2); ++ full_duplex = (data & MDIO_INT_FULL_DUPLEX_IND) ? 1 : 0; ++} ++#endif ++static void ++e100_set_duplex(struct net_device* dev, enum duplex new_duplex) ++{ ++ struct net_local *np = netdev_priv(dev); ++ ++ spin_lock(&np->transceiver_lock); ++ if (new_duplex != current_duplex) { ++ current_duplex = new_duplex; ++ e100_negotiate(dev); ++ } ++ spin_unlock(&np->transceiver_lock); ++} ++ ++static int ++e100_probe_transceiver(struct net_device* dev) ++{ ++ int ret = 0; ++ ++#if !defined(CONFIG_ETRAX_NO_PHY) ++ unsigned int phyid_high; ++ unsigned int phyid_low; ++ unsigned int oui; ++ struct transceiver_ops* ops = NULL; ++ struct net_local *np = netdev_priv(dev); ++ ++ spin_lock(&np->transceiver_lock); ++ ++ /* Probe MDIO physical address */ ++ for (np->mii_if.phy_id = 0; np->mii_if.phy_id <= 31; ++ np->mii_if.phy_id++) { ++ if (e100_get_mdio_reg(dev, ++ np->mii_if.phy_id, MII_BMSR) != 0xffff) ++ break; ++ } ++ if (np->mii_if.phy_id == 32) { ++ ret = -ENODEV; ++ goto out; ++ } ++ ++ /* Get manufacturer */ ++ phyid_high = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_PHYSID1); ++ phyid_low = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_PHYSID2); ++ oui = (phyid_high << 6) | (phyid_low >> 10); ++ ++ for (ops = &transceivers[0]; ops->oui; ops++) { ++ if (ops->oui == oui) ++ break; ++ } ++ transceiver = ops; ++out: ++ spin_unlock(&np->transceiver_lock); ++#endif ++ return ret; ++} ++ ++static int ++e100_get_mdio_reg(struct net_device *dev, int phy_id, int location) ++{ ++ unsigned short cmd; /* Data to be sent on MDIO port */ ++ int data; /* Data read from MDIO */ ++ int bitCounter; ++ ++ /* Start of frame, OP Code, Physical Address, Register Address */ ++ cmd = (MDIO_START << 14) | (MDIO_READ << 12) | (phy_id << 7) | ++ (location << 2); ++ ++ e100_send_mdio_cmd(cmd, 0); ++ ++ data = 0; ++ ++ /* Data... */ ++ for (bitCounter=15; bitCounter>=0 ; bitCounter--) { ++ data |= (e100_receive_mdio_bit() << bitCounter); ++ } ++ ++ return data; ++} ++ ++static void ++e100_set_mdio_reg(struct net_device *dev, int phy_id, int location, int value) ++{ ++ int bitCounter; ++ unsigned short cmd; ++ ++ cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (phy_id << 7) | ++ (location << 2); ++ ++ e100_send_mdio_cmd(cmd, 1); ++ ++ /* Data... */ ++ for (bitCounter=15; bitCounter>=0 ; bitCounter--) { ++ e100_send_mdio_bit(GET_BIT(bitCounter, value)); ++ } ++ ++} ++ ++static void ++e100_send_mdio_cmd(unsigned short cmd, int write_cmd) ++{ ++ int bitCounter; ++ unsigned char data = 0x2; ++ ++ /* Preamble */ ++ for (bitCounter = 31; bitCounter>= 0; bitCounter--) ++ e100_send_mdio_bit(GET_BIT(bitCounter, MDIO_PREAMBLE)); ++ ++ for (bitCounter = 15; bitCounter >= 2; bitCounter--) ++ e100_send_mdio_bit(GET_BIT(bitCounter, cmd)); ++ ++ /* Turnaround */ ++ for (bitCounter = 1; bitCounter >= 0 ; bitCounter--) ++ if (write_cmd) ++ e100_send_mdio_bit(GET_BIT(bitCounter, data)); ++ else ++ e100_receive_mdio_bit(); ++} ++ ++static void ++e100_send_mdio_bit(unsigned char bit) ++{ ++ *R_NETWORK_MGM_CTRL = ++ IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) | ++ IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit); ++ udelay(1); ++ *R_NETWORK_MGM_CTRL = ++ IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) | ++ IO_MASK(R_NETWORK_MGM_CTRL, mdck) | ++ IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit); ++ udelay(1); ++} ++ ++static unsigned char ++e100_receive_mdio_bit() ++{ ++ unsigned char bit; ++ *R_NETWORK_MGM_CTRL = 0; ++ bit = IO_EXTRACT(R_NETWORK_STAT, mdio, *R_NETWORK_STAT); ++ udelay(1); ++ *R_NETWORK_MGM_CTRL = IO_MASK(R_NETWORK_MGM_CTRL, mdck); ++ udelay(1); ++ return bit; ++} ++ ++static void ++e100_reset_transceiver(struct net_device* dev) ++{ ++ struct net_local *np = netdev_priv(dev); ++ unsigned short cmd; ++ unsigned short data; ++ int bitCounter; ++ ++ data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR); ++ ++ cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (np->mii_if.phy_id << 7) | (MII_BMCR << 2); ++ ++ e100_send_mdio_cmd(cmd, 1); ++ ++ data |= 0x8000; ++ ++ for (bitCounter = 15; bitCounter >= 0 ; bitCounter--) { ++ e100_send_mdio_bit(GET_BIT(bitCounter, data)); ++ } ++} ++ ++/* Called by upper layers if they decide it took too long to complete ++ * sending a packet - we need to reset and stuff. ++ */ ++ ++static void ++e100_tx_timeout(struct net_device *dev) ++{ ++ struct net_local *np = netdev_priv(dev); ++ unsigned long flags; ++ ++ spin_lock_irqsave(&np->lock, flags); ++ ++ printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, ++ tx_done(dev) ? "IRQ problem" : "network cable problem"); ++ ++ /* remember we got an error */ ++ ++ np->stats.tx_errors++; ++ ++ /* reset the TX DMA in case it has hung on something */ ++ ++ RESET_DMA(NETWORK_TX_DMA_NBR); ++ WAIT_DMA(NETWORK_TX_DMA_NBR); ++ ++ /* Reset the transceiver. */ ++ ++ e100_reset_transceiver(dev); ++ ++ /* and get rid of the packets that never got an interrupt */ ++ while (myFirstTxDesc != myNextTxDesc) { ++ dev_kfree_skb(myFirstTxDesc->skb); ++ myFirstTxDesc->skb = 0; ++ myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); ++ } ++ ++ /* Set up transmit DMA channel so it can be restarted later */ ++ *R_DMA_CH0_FIRST = 0; ++ *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); ++ ++ /* tell the upper layers we're ok again */ ++ ++ netif_wake_queue(dev); ++ spin_unlock_irqrestore(&np->lock, flags); ++} ++ ++ ++/* This will only be invoked if the driver is _not_ in XOFF state. ++ * What this means is that we need not check it, and that this ++ * invariant will hold if we make sure that the netif_*_queue() ++ * calls are done at the proper times. ++ */ ++ ++static int ++e100_send_packet(struct sk_buff *skb, struct net_device *dev) ++{ ++ struct net_local *np = netdev_priv(dev); ++ unsigned char *buf = skb->data; ++ unsigned long flags; ++ ++#ifdef ETHDEBUG ++ printk("send packet len %d\n", length); ++#endif ++ spin_lock_irqsave(&np->lock, flags); /* protect from tx_interrupt and ourself */ ++ ++ myNextTxDesc->skb = skb; ++ ++ dev->trans_start = jiffies; ++ ++ e100_hardware_send_packet(np, buf, skb->len); ++ ++ myNextTxDesc = phys_to_virt(myNextTxDesc->descr.next); ++ ++ /* Stop queue if full */ ++ if (myNextTxDesc == myFirstTxDesc) { ++ netif_stop_queue(dev); ++ } ++ ++ spin_unlock_irqrestore(&np->lock, flags); ++ ++ return NETDEV_TX_OK; ++} ++ ++/* ++ * The typical workload of the driver: ++ * Handle the network interface interrupts. ++ */ ++ ++static irqreturn_t ++e100rxtx_interrupt(int irq, void *dev_id) ++{ ++ struct net_device *dev = (struct net_device *)dev_id; ++ struct net_local *np = netdev_priv(dev); ++ unsigned long irqbits; ++ ++ /* ++ * Note that both rx and tx interrupts are blocked at this point, ++ * regardless of which got us here. ++ */ ++ ++ irqbits = *R_IRQ_MASK2_RD; ++ ++ /* Handle received packets */ ++ if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma1_eop, active)) { ++ /* acknowledge the eop interrupt */ ++ ++ *R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do); ++ ++ /* check if one or more complete packets were indeed received */ ++ ++ while ((*R_DMA_CH1_FIRST != virt_to_phys(myNextRxDesc)) && ++ (myNextRxDesc != myLastRxDesc)) { ++ /* Take out the buffer and give it to the OS, then ++ * allocate a new buffer to put a packet in. ++ */ ++ e100_rx(dev); ++ np->stats.rx_packets++; ++ /* restart/continue on the channel, for safety */ ++ *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, restart); ++ /* clear dma channel 1 eop/descr irq bits */ ++ *R_DMA_CH1_CLR_INTR = ++ IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do) | ++ IO_STATE(R_DMA_CH1_CLR_INTR, clr_descr, do); ++ ++ /* now, we might have gotten another packet ++ so we have to loop back and check if so */ ++ } ++ } ++ ++ /* Report any packets that have been sent */ ++ while (virt_to_phys(myFirstTxDesc) != *R_DMA_CH0_FIRST && ++ (netif_queue_stopped(dev) || myFirstTxDesc != myNextTxDesc)) { ++ np->stats.tx_bytes += myFirstTxDesc->skb->len; ++ np->stats.tx_packets++; ++ ++ /* dma is ready with the transmission of the data in tx_skb, so now ++ we can release the skb memory */ ++ dev_kfree_skb_irq(myFirstTxDesc->skb); ++ myFirstTxDesc->skb = 0; ++ myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); ++ /* Wake up queue. */ ++ netif_wake_queue(dev); ++ } ++ ++ if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) { ++ /* acknowledge the eop interrupt. */ ++ *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); ++ } ++ ++ return IRQ_HANDLED; ++} ++ ++static irqreturn_t ++e100nw_interrupt(int irq, void *dev_id) ++{ ++ struct net_device *dev = (struct net_device *)dev_id; ++ struct net_local *np = netdev_priv(dev); ++ unsigned long irqbits = *R_IRQ_MASK0_RD; ++ ++ /* check for underrun irq */ ++ if (irqbits & IO_STATE(R_IRQ_MASK0_RD, underrun, active)) { ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); ++ *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); ++ np->stats.tx_errors++; ++ D(printk("ethernet receiver underrun!\n")); ++ } ++ ++ /* check for overrun irq */ ++ if (irqbits & IO_STATE(R_IRQ_MASK0_RD, overrun, active)) { ++ update_rx_stats(&np->stats); /* this will ack the irq */ ++ D(printk("ethernet receiver overrun!\n")); ++ } ++ /* check for excessive collision irq */ ++ if (irqbits & IO_STATE(R_IRQ_MASK0_RD, excessive_col, active)) { ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); ++ *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; ++ SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); ++ np->stats.tx_errors++; ++ D(printk("ethernet excessive collisions!\n")); ++ } ++ return IRQ_HANDLED; ++} ++ ++/* We have a good packet(s), get it/them out of the buffers. */ ++static void ++e100_rx(struct net_device *dev) ++{ ++ struct sk_buff *skb; ++ int length = 0; ++ struct net_local *np = netdev_priv(dev); ++ unsigned char *skb_data_ptr; ++#ifdef ETHDEBUG ++ int i; ++#endif ++ etrax_eth_descr *prevRxDesc; /* The descriptor right before myNextRxDesc */ ++ spin_lock(&np->led_lock); ++ if (!led_active && time_after(jiffies, led_next_time)) { ++ /* light the network leds depending on the current speed. */ ++ e100_set_network_leds(NETWORK_ACTIVITY); ++ ++ /* Set the earliest time we may clear the LED */ ++ led_next_time = jiffies + NET_FLASH_TIME; ++ led_active = 1; ++ mod_timer(&clear_led_timer, jiffies + HZ/10); ++ } ++ spin_unlock(&np->led_lock); ++ ++ length = myNextRxDesc->descr.hw_len - 4; ++ np->stats.rx_bytes += length; ++ ++#ifdef ETHDEBUG ++ printk("Got a packet of length %d:\n", length); ++ /* dump the first bytes in the packet */ ++ skb_data_ptr = (unsigned char *)phys_to_virt(myNextRxDesc->descr.buf); ++ for (i = 0; i < 8; i++) { ++ printk("%d: %.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2x\n", i * 8, ++ skb_data_ptr[0],skb_data_ptr[1],skb_data_ptr[2],skb_data_ptr[3], ++ skb_data_ptr[4],skb_data_ptr[5],skb_data_ptr[6],skb_data_ptr[7]); ++ skb_data_ptr += 8; ++ } ++#endif ++ ++ if (length < RX_COPYBREAK) { ++ /* Small packet, copy data */ ++ skb = dev_alloc_skb(length - ETHER_HEAD_LEN); ++ if (!skb) { ++ np->stats.rx_errors++; ++ printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); ++ goto update_nextrxdesc; ++ } ++ ++ skb_put(skb, length - ETHER_HEAD_LEN); /* allocate room for the packet body */ ++ skb_data_ptr = skb_push(skb, ETHER_HEAD_LEN); /* allocate room for the header */ ++ ++#ifdef ETHDEBUG ++ printk("head = 0x%x, data = 0x%x, tail = 0x%x, end = 0x%x\n", ++ skb->head, skb->data, skb_tail_pointer(skb), ++ skb_end_pointer(skb)); ++ printk("copying packet to 0x%x.\n", skb_data_ptr); ++#endif ++ ++ memcpy(skb_data_ptr, phys_to_virt(myNextRxDesc->descr.buf), length); ++ } ++ else { ++ /* Large packet, send directly to upper layers and allocate new ++ * memory (aligned to cache line boundary to avoid bug). ++ * Before sending the skb to upper layers we must make sure ++ * that skb->data points to the aligned start of the packet. ++ */ ++ int align; ++ struct sk_buff *new_skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); ++ if (!new_skb) { ++ np->stats.rx_errors++; ++ printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); ++ goto update_nextrxdesc; ++ } ++ skb = myNextRxDesc->skb; ++ align = (int)phys_to_virt(myNextRxDesc->descr.buf) - (int)skb->data; ++ skb_put(skb, length + align); ++ skb_pull(skb, align); /* Remove alignment bytes */ ++ myNextRxDesc->skb = new_skb; ++ myNextRxDesc->descr.buf = L1_CACHE_ALIGN(virt_to_phys(myNextRxDesc->skb->data)); ++ } ++ ++ skb->protocol = eth_type_trans(skb, dev); ++ ++ /* Send the packet to the upper layers */ ++ netif_rx(skb); ++ ++ update_nextrxdesc: ++ /* Prepare for next packet */ ++ myNextRxDesc->descr.status = 0; ++ prevRxDesc = myNextRxDesc; ++ myNextRxDesc = phys_to_virt(myNextRxDesc->descr.next); ++ ++ rx_queue_len++; ++ ++ /* Check if descriptors should be returned */ ++ if (rx_queue_len == RX_QUEUE_THRESHOLD) { ++ flush_etrax_cache(); ++ prevRxDesc->descr.ctrl |= d_eol; ++ myLastRxDesc->descr.ctrl &= ~d_eol; ++ myLastRxDesc = prevRxDesc; ++ rx_queue_len = 0; ++ } ++} ++ ++/* The inverse routine to net_open(). */ ++static int ++e100_close(struct net_device *dev) ++{ ++ struct net_local *np = netdev_priv(dev); ++ ++ printk(KERN_INFO "Closing %s.\n", dev->name); ++ ++ netif_stop_queue(dev); ++ ++ *R_IRQ_MASK0_CLR = ++ IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) | ++ IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) | ++ IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr); ++ ++ *R_IRQ_MASK2_CLR = ++ IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) | ++ IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | ++ IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) | ++ IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); ++ ++ /* Stop the receiver and the transmitter */ ++ ++ RESET_DMA(NETWORK_TX_DMA_NBR); ++ RESET_DMA(NETWORK_RX_DMA_NBR); ++ ++ /* Flush the Tx and disable Rx here. */ ++ ++ free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev); ++ free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev); ++ free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev); ++ ++ cris_free_dma(NETWORK_TX_DMA_NBR, cardname); ++ cris_free_dma(NETWORK_RX_DMA_NBR, cardname); ++ ++ /* Update the statistics here. */ ++ ++ update_rx_stats(&np->stats); ++ update_tx_stats(&np->stats); ++ ++ /* Stop speed/duplex timers */ ++ del_timer(&speed_timer); ++ del_timer(&duplex_timer); ++ ++ return 0; ++} ++ ++static int ++e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) ++{ ++ struct mii_ioctl_data *data = if_mii(ifr); ++ struct net_local *np = netdev_priv(dev); ++ int rc = 0; ++ int old_autoneg; ++ ++ spin_lock(&np->lock); /* Preempt protection */ ++ switch (cmd) { ++ /* The ioctls below should be considered obsolete but are */ ++ /* still present for compatability with old scripts/apps */ ++ case SET_ETH_SPEED_10: /* 10 Mbps */ ++ e100_set_speed(dev, 10); ++ break; ++ case SET_ETH_SPEED_100: /* 100 Mbps */ ++ e100_set_speed(dev, 100); ++ break; ++ case SET_ETH_SPEED_AUTO: /* Auto-negotiate speed */ ++ e100_set_speed(dev, 0); ++ break; ++ case SET_ETH_DUPLEX_HALF: /* Half duplex */ ++ e100_set_duplex(dev, half); ++ break; ++ case SET_ETH_DUPLEX_FULL: /* Full duplex */ ++ e100_set_duplex(dev, full); ++ break; ++ case SET_ETH_DUPLEX_AUTO: /* Auto-negotiate duplex */ ++ e100_set_duplex(dev, autoneg); ++ break; ++ case SET_ETH_AUTONEG: ++ old_autoneg = autoneg_normal; ++ autoneg_normal = *(int*)data; ++ if (autoneg_normal != old_autoneg) ++ e100_negotiate(dev); ++ break; ++ default: ++ rc = generic_mii_ioctl(&np->mii_if, if_mii(ifr), ++ cmd, NULL); ++ break; ++ } ++ spin_unlock(&np->lock); ++ return rc; ++} ++ ++static int e100_get_settings(struct net_device *dev, ++ struct ethtool_cmd *cmd) ++{ ++ struct net_local *np = netdev_priv(dev); ++ int err; ++ ++ spin_lock_irq(&np->lock); ++ err = mii_ethtool_gset(&np->mii_if, cmd); ++ spin_unlock_irq(&np->lock); ++ ++ /* The PHY may support 1000baseT, but the Etrax100 does not. */ ++ cmd->supported &= ~(SUPPORTED_1000baseT_Half ++ | SUPPORTED_1000baseT_Full); ++ return err; ++} ++ ++static int e100_set_settings(struct net_device *dev, ++ struct ethtool_cmd *ecmd) ++{ ++ if (ecmd->autoneg == AUTONEG_ENABLE) { ++ e100_set_duplex(dev, autoneg); ++ e100_set_speed(dev, 0); ++ } else { ++ e100_set_duplex(dev, ecmd->duplex == DUPLEX_HALF ? half : full); ++ e100_set_speed(dev, ecmd->speed == SPEED_10 ? 10: 100); ++ } ++ ++ return 0; ++} ++ ++static void e100_get_drvinfo(struct net_device *dev, ++ struct ethtool_drvinfo *info) ++{ ++ strncpy(info->driver, "ETRAX 100LX", sizeof(info->driver) - 1); ++ strncpy(info->version, "$Revision: 1.31 $", sizeof(info->version) - 1); ++ strncpy(info->fw_version, "N/A", sizeof(info->fw_version) - 1); ++ strncpy(info->bus_info, "N/A", sizeof(info->bus_info) - 1); ++} ++ ++static int e100_nway_reset(struct net_device *dev) ++{ ++ if (current_duplex == autoneg && current_speed_selection == 0) ++ e100_negotiate(dev); ++ return 0; ++} ++ ++static const struct ethtool_ops e100_ethtool_ops = { ++ .get_settings = e100_get_settings, ++ .set_settings = e100_set_settings, ++ .get_drvinfo = e100_get_drvinfo, ++ .nway_reset = e100_nway_reset, ++ .get_link = ethtool_op_get_link, ++}; ++ ++static int ++e100_set_config(struct net_device *dev, struct ifmap *map) ++{ ++ struct net_local *np = netdev_priv(dev); ++ ++ spin_lock(&np->lock); /* Preempt protection */ ++ ++ switch(map->port) { ++ case IF_PORT_UNKNOWN: ++ /* Use autoneg */ ++ e100_set_speed(dev, 0); ++ e100_set_duplex(dev, autoneg); ++ break; ++ case IF_PORT_10BASET: ++ e100_set_speed(dev, 10); ++ e100_set_duplex(dev, autoneg); ++ break; ++ case IF_PORT_100BASET: ++ case IF_PORT_100BASETX: ++ e100_set_speed(dev, 100); ++ e100_set_duplex(dev, autoneg); ++ break; ++ case IF_PORT_100BASEFX: ++ case IF_PORT_10BASE2: ++ case IF_PORT_AUI: ++ spin_unlock(&np->lock); ++ return -EOPNOTSUPP; ++ break; ++ default: ++ printk(KERN_ERR "%s: Invalid media selected", dev->name); ++ spin_unlock(&np->lock); ++ return -EINVAL; ++ } ++ spin_unlock(&np->lock); ++ return 0; ++} ++ ++static void ++update_rx_stats(struct net_device_stats *es) ++{ ++ unsigned long r = *R_REC_COUNTERS; ++ /* update stats relevant to reception errors */ ++ es->rx_fifo_errors += IO_EXTRACT(R_REC_COUNTERS, congestion, r); ++ es->rx_crc_errors += IO_EXTRACT(R_REC_COUNTERS, crc_error, r); ++ es->rx_frame_errors += IO_EXTRACT(R_REC_COUNTERS, alignment_error, r); ++ es->rx_length_errors += IO_EXTRACT(R_REC_COUNTERS, oversize, r); ++} ++ ++static void ++update_tx_stats(struct net_device_stats *es) ++{ ++ unsigned long r = *R_TR_COUNTERS; ++ /* update stats relevant to transmission errors */ ++ es->collisions += ++ IO_EXTRACT(R_TR_COUNTERS, single_col, r) + ++ IO_EXTRACT(R_TR_COUNTERS, multiple_col, r); ++} ++ ++/* ++ * Get the current statistics. ++ * This may be called with the card open or closed. ++ */ ++static struct net_device_stats * ++e100_get_stats(struct net_device *dev) ++{ ++ struct net_local *lp = netdev_priv(dev); ++ unsigned long flags; ++ ++ spin_lock_irqsave(&lp->lock, flags); ++ ++ update_rx_stats(&lp->stats); ++ update_tx_stats(&lp->stats); ++ ++ spin_unlock_irqrestore(&lp->lock, flags); ++ return &lp->stats; ++} ++ ++/* ++ * Set or clear the multicast filter for this adaptor. ++ * num_addrs == -1 Promiscuous mode, receive all packets ++ * num_addrs == 0 Normal mode, clear multicast list ++ * num_addrs > 0 Multicast mode, receive normal and MC packets, ++ * and do best-effort filtering. ++ */ ++static void ++set_multicast_list(struct net_device *dev) ++{ ++ struct net_local *lp = netdev_priv(dev); ++ int num_addr = dev->mc_count; ++ unsigned long int lo_bits; ++ unsigned long int hi_bits; ++ ++ spin_lock(&lp->lock); ++ if (dev->flags & IFF_PROMISC) { ++ /* promiscuous mode */ ++ lo_bits = 0xfffffffful; ++ hi_bits = 0xfffffffful; ++ ++ /* Enable individual receive */ ++ SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, receive); ++ *R_NETWORK_REC_CONFIG = network_rec_config_shadow; ++ } else if (dev->flags & IFF_ALLMULTI) { ++ /* enable all multicasts */ ++ lo_bits = 0xfffffffful; ++ hi_bits = 0xfffffffful; ++ ++ /* Disable individual receive */ ++ SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); ++ *R_NETWORK_REC_CONFIG = network_rec_config_shadow; ++ } else if (num_addr == 0) { ++ /* Normal, clear the mc list */ ++ lo_bits = 0x00000000ul; ++ hi_bits = 0x00000000ul; ++ ++ /* Disable individual receive */ ++ SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); ++ *R_NETWORK_REC_CONFIG = network_rec_config_shadow; ++ } else { ++ /* MC mode, receive normal and MC packets */ ++ char hash_ix; ++ struct dev_mc_list *dmi = dev->mc_list; ++ int i; ++ char *baddr; ++ ++ lo_bits = 0x00000000ul; ++ hi_bits = 0x00000000ul; ++ for (i = 0; i < num_addr; i++) { ++ /* Calculate the hash index for the GA registers */ ++ ++ hash_ix = 0; ++ baddr = dmi->dmi_addr; ++ hash_ix ^= (*baddr) & 0x3f; ++ hash_ix ^= ((*baddr) >> 6) & 0x03; ++ ++baddr; ++ hash_ix ^= ((*baddr) << 2) & 0x03c; ++ hash_ix ^= ((*baddr) >> 4) & 0xf; ++ ++baddr; ++ hash_ix ^= ((*baddr) << 4) & 0x30; ++ hash_ix ^= ((*baddr) >> 2) & 0x3f; ++ ++baddr; ++ hash_ix ^= (*baddr) & 0x3f; ++ hash_ix ^= ((*baddr) >> 6) & 0x03; ++ ++baddr; ++ hash_ix ^= ((*baddr) << 2) & 0x03c; ++ hash_ix ^= ((*baddr) >> 4) & 0xf; ++ ++baddr; ++ hash_ix ^= ((*baddr) << 4) & 0x30; ++ hash_ix ^= ((*baddr) >> 2) & 0x3f; ++ ++ hash_ix &= 0x3f; ++ ++ if (hash_ix >= 32) { ++ hi_bits |= (1 << (hash_ix-32)); ++ } else { ++ lo_bits |= (1 << hash_ix); ++ } ++ dmi = dmi->next; ++ } ++ /* Disable individual receive */ ++ SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); ++ *R_NETWORK_REC_CONFIG = network_rec_config_shadow; ++ } ++ *R_NETWORK_GA_0 = lo_bits; ++ *R_NETWORK_GA_1 = hi_bits; ++ spin_unlock(&lp->lock); ++} ++ ++void ++e100_hardware_send_packet(struct net_local *np, char *buf, int length) ++{ ++ D(printk("e100 send pack, buf 0x%x len %d\n", buf, length)); ++ ++ spin_lock(&np->led_lock); ++ if (!led_active && time_after(jiffies, led_next_time)) { ++ /* light the network leds depending on the current speed. */ ++ e100_set_network_leds(NETWORK_ACTIVITY); ++ ++ /* Set the earliest time we may clear the LED */ ++ led_next_time = jiffies + NET_FLASH_TIME; ++ led_active = 1; ++ mod_timer(&clear_led_timer, jiffies + HZ/10); ++ } ++ spin_unlock(&np->led_lock); ++ ++ /* configure the tx dma descriptor */ ++ myNextTxDesc->descr.sw_len = length; ++ myNextTxDesc->descr.ctrl = d_eop | d_eol | d_wait; ++ myNextTxDesc->descr.buf = virt_to_phys(buf); ++ ++ /* Move end of list */ ++ myLastTxDesc->descr.ctrl &= ~d_eol; ++ myLastTxDesc = myNextTxDesc; ++ ++ /* Restart DMA channel */ ++ *R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, restart); ++} ++ ++static void ++e100_clear_network_leds(unsigned long dummy) ++{ ++ struct net_device *dev = (struct net_device *)dummy; ++ struct net_local *np = netdev_priv(dev); ++ ++ spin_lock(&np->led_lock); ++ ++ if (led_active && time_after(jiffies, led_next_time)) { ++ e100_set_network_leds(NO_NETWORK_ACTIVITY); ++ ++ /* Set the earliest time we may set the LED */ ++ led_next_time = jiffies + NET_FLASH_PAUSE; ++ led_active = 0; ++ } ++ ++ spin_unlock(&np->led_lock); ++} ++ ++static void ++e100_set_network_leds(int active) ++{ ++#if defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK) ++ int light_leds = (active == NO_NETWORK_ACTIVITY); ++#elif defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY) ++ int light_leds = (active == NETWORK_ACTIVITY); ++#else ++#error "Define either CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK or CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY" ++#endif ++ ++ if (!current_speed) { ++ /* Make LED red, link is down */ ++#if defined(CONFIG_ETRAX_NETWORK_RED_ON_NO_CONNECTION) ++ CRIS_LED_NETWORK_SET(CRIS_LED_RED); ++#else ++ CRIS_LED_NETWORK_SET(CRIS_LED_OFF); ++#endif ++ } else if (light_leds) { ++ if (current_speed == 10) { ++ CRIS_LED_NETWORK_SET(CRIS_LED_ORANGE); ++ } else { ++ CRIS_LED_NETWORK_SET(CRIS_LED_GREEN); ++ } ++ } else { ++ CRIS_LED_NETWORK_SET(CRIS_LED_OFF); ++ } ++} ++ ++#ifdef CONFIG_NET_POLL_CONTROLLER ++static void ++e100_netpoll(struct net_device* netdev) ++{ ++ e100rxtx_interrupt(NETWORK_DMA_TX_IRQ_NBR, netdev, NULL); ++} ++#endif ++ ++static int ++etrax_init_module(void) ++{ ++ return etrax_ethernet_init(); ++} ++ ++static int __init ++e100_boot_setup(char* str) ++{ ++ struct sockaddr sa = {0}; ++ int i; ++ ++ /* Parse the colon separated Ethernet station address */ ++ for (i = 0; i < ETH_ALEN; i++) { ++ unsigned int tmp; ++ if (sscanf(str + 3*i, "%2x", &tmp) != 1) { ++ printk(KERN_WARNING "Malformed station address"); ++ return 0; ++ } ++ sa.sa_data[i] = (char)tmp; ++ } ++ ++ default_mac = sa; ++ return 1; ++} ++ ++__setup("etrax100_eth=", e100_boot_setup); ++ ++module_init(etrax_init_module); +diff -Nur linux-2.6.32.orig/drivers/serial/crisv10.c linux-2.6.32/drivers/serial/crisv10.c +--- linux-2.6.32.orig/drivers/serial/crisv10.c 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/drivers/serial/crisv10.c 2010-01-10 13:41:59.276309474 +0100 @@ -13,6 +13,7 @@ #include <linux/errno.h> #include <linux/signal.h> @@ -386,7 +2164,7 @@ diff -Nur linux-2.6.31.5.orig/drivers/serial/crisv10.c linux-2.6.31.5/drivers/se #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/tty.h> -@@ -26,6 +27,7 @@ +@@ -27,6 +28,7 @@ #include <linux/kernel.h> #include <linux/mutex.h> #include <linux/bitops.h> @@ -394,7 +2172,7 @@ diff -Nur linux-2.6.31.5.orig/drivers/serial/crisv10.c linux-2.6.31.5/drivers/se #include <linux/seq_file.h> #include <linux/delay.h> #include <linux/module.h> -@@ -4414,6 +4416,7 @@ +@@ -4415,6 +4417,7 @@ #endif }; @@ -402,7 +2180,7 @@ diff -Nur linux-2.6.31.5.orig/drivers/serial/crisv10.c linux-2.6.31.5/drivers/se static int __init rs_init(void) { int i; -@@ -4547,6 +4550,24 @@ +@@ -4548,6 +4551,24 @@ #endif #endif /* CONFIG_SVINTO_SIM */ @@ -427,9 +2205,4569 @@ diff -Nur linux-2.6.31.5.orig/drivers/serial/crisv10.c linux-2.6.31.5/drivers/se return 0; } -diff -Nur linux-2.6.31.5.orig/drivers/usb/host/hc-cris-dbg.h linux-2.6.31.5/drivers/usb/host/hc-cris-dbg.h ---- linux-2.6.31.5.orig/drivers/usb/host/hc-cris-dbg.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.31.5/drivers/usb/host/hc-cris-dbg.h 2009-11-09 21:10:52.977927276 +0100 +diff -Nur linux-2.6.32.orig/drivers/serial/crisv10.c.orig linux-2.6.32/drivers/serial/crisv10.c.orig +--- linux-2.6.32.orig/drivers/serial/crisv10.c.orig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.32/drivers/serial/crisv10.c.orig 2009-12-03 04:51:21.000000000 +0100 +@@ -0,0 +1,4556 @@ ++/* ++ * Serial port driver for the ETRAX 100LX chip ++ * ++ * Copyright (C) 1998-2007 Axis Communications AB ++ * ++ * Many, many authors. Based once upon a time on serial.c for 16x50. ++ * ++ */ ++ ++static char *serial_version = "$Revision: 1.25 $"; ++ ++#include <linux/types.h> ++#include <linux/errno.h> ++#include <linux/signal.h> ++#include <linux/sched.h> ++#include <linux/timer.h> ++#include <linux/interrupt.h> ++#include <linux/tty.h> ++#include <linux/tty_flip.h> ++#include <linux/major.h> ++#include <linux/smp_lock.h> ++#include <linux/string.h> ++#include <linux/fcntl.h> ++#include <linux/mm.h> ++#include <linux/slab.h> ++#include <linux/init.h> ++#include <linux/kernel.h> ++#include <linux/mutex.h> ++#include <linux/bitops.h> ++#include <linux/seq_file.h> ++#include <linux/delay.h> ++#include <linux/module.h> ++#include <linux/uaccess.h> ++#include <linux/io.h> ++ ++#include <asm/irq.h> ++#include <asm/dma.h> ++#include <asm/system.h> ++ ++#include <arch/svinto.h> ++ ++/* non-arch dependent serial structures are in linux/serial.h */ ++#include <linux/serial.h> ++/* while we keep our own stuff (struct e100_serial) in a local .h file */ ++#include "crisv10.h" ++#include <asm/fasttimer.h> ++#include <arch/io_interface_mux.h> ++ ++#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER ++#ifndef CONFIG_ETRAX_FAST_TIMER ++#error "Enable FAST_TIMER to use SERIAL_FAST_TIMER" ++#endif ++#endif ++ ++#if defined(CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS) && \ ++ (CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS == 0) ++#error "RX_TIMEOUT_TICKS == 0 not allowed, use 1" ++#endif ++ ++#if defined(CONFIG_ETRAX_RS485_ON_PA) && defined(CONFIG_ETRAX_RS485_ON_PORT_G) ++#error "Disable either CONFIG_ETRAX_RS485_ON_PA or CONFIG_ETRAX_RS485_ON_PORT_G" ++#endif ++ ++/* ++ * All of the compatibilty code so we can compile serial.c against ++ * older kernels is hidden in serial_compat.h ++ */ ++#if defined(LOCAL_HEADERS) ++#include "serial_compat.h" ++#endif ++ ++struct tty_driver *serial_driver; ++ ++/* number of characters left in xmit buffer before we ask for more */ ++#define WAKEUP_CHARS 256 ++ ++//#define SERIAL_DEBUG_INTR ++//#define SERIAL_DEBUG_OPEN ++//#define SERIAL_DEBUG_FLOW ++//#define SERIAL_DEBUG_DATA ++//#define SERIAL_DEBUG_THROTTLE ++//#define SERIAL_DEBUG_IO /* Debug for Extra control and status pins */ ++//#define SERIAL_DEBUG_LINE 0 /* What serport we want to debug */ ++ ++/* Enable this to use serial interrupts to handle when you ++ expect the first received event on the serial port to ++ be an error, break or similar. Used to be able to flash IRMA ++ from eLinux */ ++#define SERIAL_HANDLE_EARLY_ERRORS ++ ++/* Currently 16 descriptors x 128 bytes = 2048 bytes */ ++#define SERIAL_DESCR_BUF_SIZE 256 ++ ++#define SERIAL_PRESCALE_BASE 3125000 /* 3.125MHz */ ++#define DEF_BAUD_BASE SERIAL_PRESCALE_BASE ++ ++/* We don't want to load the system with massive fast timer interrupt ++ * on high baudrates so limit it to 250 us (4kHz) */ ++#define MIN_FLUSH_TIME_USEC 250 ++ ++/* Add an x here to log a lot of timer stuff */ ++#define TIMERD(x) ++/* Debug details of interrupt handling */ ++#define DINTR1(x) /* irq on/off, errors */ ++#define DINTR2(x) /* tx and rx */ ++/* Debug flip buffer stuff */ ++#define DFLIP(x) ++/* Debug flow control and overview of data flow */ ++#define DFLOW(x) ++#define DBAUD(x) ++#define DLOG_INT_TRIG(x) ++ ++//#define DEBUG_LOG_INCLUDED ++#ifndef DEBUG_LOG_INCLUDED ++#define DEBUG_LOG(line, string, value) ++#else ++struct debug_log_info ++{ ++ unsigned long time; ++ unsigned long timer_data; ++// int line; ++ const char *string; ++ int value; ++}; ++#define DEBUG_LOG_SIZE 4096 ++ ++struct debug_log_info debug_log[DEBUG_LOG_SIZE]; ++int debug_log_pos = 0; ++ ++#define DEBUG_LOG(_line, _string, _value) do { \ ++ if ((_line) == SERIAL_DEBUG_LINE) {\ ++ debug_log_func(_line, _string, _value); \ ++ }\ ++}while(0) ++ ++void debug_log_func(int line, const char *string, int value) ++{ ++ if (debug_log_pos < DEBUG_LOG_SIZE) { ++ debug_log[debug_log_pos].time = jiffies; ++ debug_log[debug_log_pos].timer_data = *R_TIMER_DATA; ++// debug_log[debug_log_pos].line = line; ++ debug_log[debug_log_pos].string = string; ++ debug_log[debug_log_pos].value = value; ++ debug_log_pos++; ++ } ++ /*printk(string, value);*/ ++} ++#endif ++ ++#ifndef CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS ++/* Default number of timer ticks before flushing rx fifo ++ * When using "little data, low latency applications: use 0 ++ * When using "much data applications (PPP)" use ~5 ++ */ ++#define CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS 5 ++#endif ++ ++unsigned long timer_data_to_ns(unsigned long timer_data); ++ ++static void change_speed(struct e100_serial *info); ++static void rs_throttle(struct tty_struct * tty); ++static void rs_wait_until_sent(struct tty_struct *tty, int timeout); ++static int rs_write(struct tty_struct *tty, ++ const unsigned char *buf, int count); ++#ifdef CONFIG_ETRAX_RS485 ++static int e100_write_rs485(struct tty_struct *tty, ++ const unsigned char *buf, int count); ++#endif ++static int get_lsr_info(struct e100_serial *info, unsigned int *value); ++ ++ ++#define DEF_BAUD 115200 /* 115.2 kbit/s */ ++#define STD_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST) ++#define DEF_RX 0x20 /* or SERIAL_CTRL_W >> 8 */ ++/* Default value of tx_ctrl register: has txd(bit 7)=1 (idle) as default */ ++#define DEF_TX 0x80 /* or SERIAL_CTRL_B */ ++ ++/* offsets from R_SERIALx_CTRL */ ++ ++#define REG_DATA 0 ++#define REG_DATA_STATUS32 0 /* this is the 32 bit register R_SERIALx_READ */ ++#define REG_TR_DATA 0 ++#define REG_STATUS 1 ++#define REG_TR_CTRL 1 ++#define REG_REC_CTRL 2 ++#define REG_BAUD 3 ++#define REG_XOFF 4 /* this is a 32 bit register */ ++ ++/* The bitfields are the same for all serial ports */ ++#define SER_RXD_MASK IO_MASK(R_SERIAL0_STATUS, rxd) ++#define SER_DATA_AVAIL_MASK IO_MASK(R_SERIAL0_STATUS, data_avail) ++#define SER_FRAMING_ERR_MASK IO_MASK(R_SERIAL0_STATUS, framing_err) ++#define SER_PAR_ERR_MASK IO_MASK(R_SERIAL0_STATUS, par_err) ++#define SER_OVERRUN_MASK IO_MASK(R_SERIAL0_STATUS, overrun) ++ ++#define SER_ERROR_MASK (SER_OVERRUN_MASK | SER_PAR_ERR_MASK | SER_FRAMING_ERR_MASK) ++ ++/* Values for info->errorcode */ ++#define ERRCODE_SET_BREAK (TTY_BREAK) ++#define ERRCODE_INSERT 0x100 ++#define ERRCODE_INSERT_BREAK (ERRCODE_INSERT | TTY_BREAK) ++ ++#define FORCE_EOP(info) *R_SET_EOP = 1U << info->iseteop; ++ ++/* ++ * General note regarding the use of IO_* macros in this file: ++ * ++ * We will use the bits defined for DMA channel 6 when using various ++ * IO_* macros (e.g. IO_STATE, IO_MASK, IO_EXTRACT) and _assume_ they are ++ * the same for all channels (which of course they are). ++ * ++ * We will also use the bits defined for serial port 0 when writing commands ++ * to the different ports, as these bits too are the same for all ports. ++ */ ++ ++ ++/* Mask for the irqs possibly enabled in R_IRQ_MASK1_RD etc. */ ++static const unsigned long e100_ser_int_mask = 0 ++#ifdef CONFIG_ETRAX_SERIAL_PORT0 ++| IO_MASK(R_IRQ_MASK1_RD, ser0_data) | IO_MASK(R_IRQ_MASK1_RD, ser0_ready) ++#endif ++#ifdef CONFIG_ETRAX_SERIAL_PORT1 ++| IO_MASK(R_IRQ_MASK1_RD, ser1_data) | IO_MASK(R_IRQ_MASK1_RD, ser1_ready) ++#endif ++#ifdef CONFIG_ETRAX_SERIAL_PORT2 ++| IO_MASK(R_IRQ_MASK1_RD, ser2_data) | IO_MASK(R_IRQ_MASK1_RD, ser2_ready) ++#endif ++#ifdef CONFIG_ETRAX_SERIAL_PORT3 ++| IO_MASK(R_IRQ_MASK1_RD, ser3_data) | IO_MASK(R_IRQ_MASK1_RD, ser3_ready) ++#endif ++; ++unsigned long r_alt_ser_baudrate_shadow = 0; ++ ++/* this is the data for the four serial ports in the etrax100 */ ++/* DMA2(ser2), DMA4(ser3), DMA6(ser0) or DMA8(ser1) */ ++/* R_DMA_CHx_CLR_INTR, R_DMA_CHx_FIRST, R_DMA_CHx_CMD */ ++ ++static struct e100_serial rs_table[] = { ++ { .baud = DEF_BAUD, ++ .ioport = (unsigned char *)R_SERIAL0_CTRL, ++ .irq = 1U << 12, /* uses DMA 6 and 7 */ ++ .oclrintradr = R_DMA_CH6_CLR_INTR, ++ .ofirstadr = R_DMA_CH6_FIRST, ++ .ocmdadr = R_DMA_CH6_CMD, ++ .ostatusadr = R_DMA_CH6_STATUS, ++ .iclrintradr = R_DMA_CH7_CLR_INTR, ++ .ifirstadr = R_DMA_CH7_FIRST, ++ .icmdadr = R_DMA_CH7_CMD, ++ .idescradr = R_DMA_CH7_DESCR, ++ .flags = STD_FLAGS, ++ .rx_ctrl = DEF_RX, ++ .tx_ctrl = DEF_TX, ++ .iseteop = 2, ++ .dma_owner = dma_ser0, ++ .io_if = if_serial_0, ++#ifdef CONFIG_ETRAX_SERIAL_PORT0 ++ .enabled = 1, ++#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT ++ .dma_out_enabled = 1, ++ .dma_out_nbr = SER0_TX_DMA_NBR, ++ .dma_out_irq_nbr = SER0_DMA_TX_IRQ_NBR, ++ .dma_out_irq_flags = IRQF_DISABLED, ++ .dma_out_irq_description = "serial 0 dma tr", ++#else ++ .dma_out_enabled = 0, ++ .dma_out_nbr = UINT_MAX, ++ .dma_out_irq_nbr = 0, ++ .dma_out_irq_flags = 0, ++ .dma_out_irq_description = NULL, ++#endif ++#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN ++ .dma_in_enabled = 1, ++ .dma_in_nbr = SER0_RX_DMA_NBR, ++ .dma_in_irq_nbr = SER0_DMA_RX_IRQ_NBR, ++ .dma_in_irq_flags = IRQF_DISABLED, ++ .dma_in_irq_description = "serial 0 dma rec", ++#else ++ .dma_in_enabled = 0, ++ .dma_in_nbr = UINT_MAX, ++ .dma_in_irq_nbr = 0, ++ .dma_in_irq_flags = 0, ++ .dma_in_irq_description = NULL, ++#endif ++#else ++ .enabled = 0, ++ .io_if_description = NULL, ++ .dma_out_enabled = 0, ++ .dma_in_enabled = 0 ++#endif ++ ++}, /* ttyS0 */ ++#ifndef CONFIG_SVINTO_SIM ++ { .baud = DEF_BAUD, ++ .ioport = (unsigned char *)R_SERIAL1_CTRL, ++ .irq = 1U << 16, /* uses DMA 8 and 9 */ ++ .oclrintradr = R_DMA_CH8_CLR_INTR, ++ .ofirstadr = R_DMA_CH8_FIRST, ++ .ocmdadr = R_DMA_CH8_CMD, ++ .ostatusadr = R_DMA_CH8_STATUS, ++ .iclrintradr = R_DMA_CH9_CLR_INTR, ++ .ifirstadr = R_DMA_CH9_FIRST, ++ .icmdadr = R_DMA_CH9_CMD, ++ .idescradr = R_DMA_CH9_DESCR, ++ .flags = STD_FLAGS, ++ .rx_ctrl = DEF_RX, ++ .tx_ctrl = DEF_TX, ++ .iseteop = 3, ++ .dma_owner = dma_ser1, ++ .io_if = if_serial_1, ++#ifdef CONFIG_ETRAX_SERIAL_PORT1 ++ .enabled = 1, ++ .io_if_description = "ser1", ++#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA8_OUT ++ .dma_out_enabled = 1, ++ .dma_out_nbr = SER1_TX_DMA_NBR, ++ .dma_out_irq_nbr = SER1_DMA_TX_IRQ_NBR, ++ .dma_out_irq_flags = IRQF_DISABLED, ++ .dma_out_irq_description = "serial 1 dma tr", ++#else ++ .dma_out_enabled = 0, ++ .dma_out_nbr = UINT_MAX, ++ .dma_out_irq_nbr = 0, ++ .dma_out_irq_flags = 0, ++ .dma_out_irq_description = NULL, ++#endif ++#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA9_IN ++ .dma_in_enabled = 1, ++ .dma_in_nbr = SER1_RX_DMA_NBR, ++ .dma_in_irq_nbr = SER1_DMA_RX_IRQ_NBR, ++ .dma_in_irq_flags = IRQF_DISABLED, ++ .dma_in_irq_description = "serial 1 dma rec", ++#else ++ .dma_in_enabled = 0, ++ .dma_in_enabled = 0, ++ .dma_in_nbr = UINT_MAX, ++ .dma_in_irq_nbr = 0, ++ .dma_in_irq_flags = 0, ++ .dma_in_irq_description = NULL, ++#endif ++#else ++ .enabled = 0, ++ .io_if_description = NULL, ++ .dma_in_irq_nbr = 0, ++ .dma_out_enabled = 0, ++ .dma_in_enabled = 0 ++#endif ++}, /* ttyS1 */ ++ ++ { .baud = DEF_BAUD, ++ .ioport = (unsigned char *)R_SERIAL2_CTRL, ++ .irq = 1U << 4, /* uses DMA 2 and 3 */ ++ .oclrintradr = R_DMA_CH2_CLR_INTR, ++ .ofirstadr = R_DMA_CH2_FIRST, ++ .ocmdadr = R_DMA_CH2_CMD, ++ .ostatusadr = R_DMA_CH2_STATUS, ++ .iclrintradr = R_DMA_CH3_CLR_INTR, ++ .ifirstadr = R_DMA_CH3_FIRST, ++ .icmdadr = R_DMA_CH3_CMD, ++ .idescradr = R_DMA_CH3_DESCR, ++ .flags = STD_FLAGS, ++ .rx_ctrl = DEF_RX, ++ .tx_ctrl = DEF_TX, ++ .iseteop = 0, ++ .dma_owner = dma_ser2, ++ .io_if = if_serial_2, ++#ifdef CONFIG_ETRAX_SERIAL_PORT2 ++ .enabled = 1, ++ .io_if_description = "ser2", ++#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT ++ .dma_out_enabled = 1, ++ .dma_out_nbr = SER2_TX_DMA_NBR, ++ .dma_out_irq_nbr = SER2_DMA_TX_IRQ_NBR, ++ .dma_out_irq_flags = IRQF_DISABLED, ++ .dma_out_irq_description = "serial 2 dma tr", ++#else ++ .dma_out_enabled = 0, ++ .dma_out_nbr = UINT_MAX, ++ .dma_out_irq_nbr = 0, ++ .dma_out_irq_flags = 0, ++ .dma_out_irq_description = NULL, ++#endif ++#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN ++ .dma_in_enabled = 1, ++ .dma_in_nbr = SER2_RX_DMA_NBR, ++ .dma_in_irq_nbr = SER2_DMA_RX_IRQ_NBR, ++ .dma_in_irq_flags = IRQF_DISABLED, ++ .dma_in_irq_description = "serial 2 dma rec", ++#else ++ .dma_in_enabled = 0, ++ .dma_in_nbr = UINT_MAX, ++ .dma_in_irq_nbr = 0, ++ .dma_in_irq_flags = 0, ++ .dma_in_irq_description = NULL, ++#endif ++#else ++ .enabled = 0, ++ .io_if_description = NULL, ++ .dma_out_enabled = 0, ++ .dma_in_enabled = 0 ++#endif ++ }, /* ttyS2 */ ++ ++ { .baud = DEF_BAUD, ++ .ioport = (unsigned char *)R_SERIAL3_CTRL, ++ .irq = 1U << 8, /* uses DMA 4 and 5 */ ++ .oclrintradr = R_DMA_CH4_CLR_INTR, ++ .ofirstadr = R_DMA_CH4_FIRST, ++ .ocmdadr = R_DMA_CH4_CMD, ++ .ostatusadr = R_DMA_CH4_STATUS, ++ .iclrintradr = R_DMA_CH5_CLR_INTR, ++ .ifirstadr = R_DMA_CH5_FIRST, ++ .icmdadr = R_DMA_CH5_CMD, ++ .idescradr = R_DMA_CH5_DESCR, ++ .flags = STD_FLAGS, ++ .rx_ctrl = DEF_RX, ++ .tx_ctrl = DEF_TX, ++ .iseteop = 1, ++ .dma_owner = dma_ser3, ++ .io_if = if_serial_3, ++#ifdef CONFIG_ETRAX_SERIAL_PORT3 ++ .enabled = 1, ++ .io_if_description = "ser3", ++#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA4_OUT ++ .dma_out_enabled = 1, ++ .dma_out_nbr = SER3_TX_DMA_NBR, ++ .dma_out_irq_nbr = SER3_DMA_TX_IRQ_NBR, ++ .dma_out_irq_flags = IRQF_DISABLED, ++ .dma_out_irq_description = "serial 3 dma tr", ++#else ++ .dma_out_enabled = 0, ++ .dma_out_nbr = UINT_MAX, ++ .dma_out_irq_nbr = 0, ++ .dma_out_irq_flags = 0, ++ .dma_out_irq_description = NULL, ++#endif ++#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA5_IN ++ .dma_in_enabled = 1, ++ .dma_in_nbr = SER3_RX_DMA_NBR, ++ .dma_in_irq_nbr = SER3_DMA_RX_IRQ_NBR, ++ .dma_in_irq_flags = IRQF_DISABLED, ++ .dma_in_irq_description = "serial 3 dma rec", ++#else ++ .dma_in_enabled = 0, ++ .dma_in_nbr = UINT_MAX, ++ .dma_in_irq_nbr = 0, ++ .dma_in_irq_flags = 0, ++ .dma_in_irq_description = NULL ++#endif ++#else ++ .enabled = 0, ++ .io_if_description = NULL, ++ .dma_out_enabled = 0, ++ .dma_in_enabled = 0 ++#endif ++ } /* ttyS3 */ ++#endif ++}; ++ ++ ++#define NR_PORTS (sizeof(rs_table)/sizeof(struct e100_serial)) ++ ++#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER ++static struct fast_timer fast_timers[NR_PORTS]; ++#endif ++ ++#ifdef CONFIG_ETRAX_SERIAL_PROC_ENTRY ++#define PROCSTAT(x) x ++struct ser_statistics_type { ++ int overrun_cnt; ++ int early_errors_cnt; ++ int ser_ints_ok_cnt; ++ int errors_cnt; ++ unsigned long int processing_flip; ++ unsigned long processing_flip_still_room; ++ unsigned long int timeout_flush_cnt; ++ int rx_dma_ints; ++ int tx_dma_ints; ++ int rx_tot; ++ int tx_tot; ++}; ++ ++static struct ser_statistics_type ser_stat[NR_PORTS]; ++ ++#else ++ ++#define PROCSTAT(x) ++ ++#endif /* CONFIG_ETRAX_SERIAL_PROC_ENTRY */ ++ ++/* RS-485 */ ++#if defined(CONFIG_ETRAX_RS485) ++#ifdef CONFIG_ETRAX_FAST_TIMER ++static struct fast_timer fast_timers_rs485[NR_PORTS]; ++#endif ++#if defined(CONFIG_ETRAX_RS485_ON_PA) ++static int rs485_pa_bit = CONFIG_ETRAX_RS485_ON_PA_BIT; ++#endif ++#if defined(CONFIG_ETRAX_RS485_ON_PORT_G) ++static int rs485_port_g_bit = CONFIG_ETRAX_RS485_ON_PORT_G_BIT; ++#endif ++#endif ++ ++/* Info and macros needed for each ports extra control/status signals. */ ++#define E100_STRUCT_PORT(line, pinname) \ ++ ((CONFIG_ETRAX_SER##line##_##pinname##_ON_PA_BIT >= 0)? \ ++ (R_PORT_PA_DATA): ( \ ++ (CONFIG_ETRAX_SER##line##_##pinname##_ON_PB_BIT >= 0)? \ ++ (R_PORT_PB_DATA):&dummy_ser[line])) ++ ++#define E100_STRUCT_SHADOW(line, pinname) \ ++ ((CONFIG_ETRAX_SER##line##_##pinname##_ON_PA_BIT >= 0)? \ ++ (&port_pa_data_shadow): ( \ ++ (CONFIG_ETRAX_SER##line##_##pinname##_ON_PB_BIT >= 0)? \ ++ (&port_pb_data_shadow):&dummy_ser[line])) ++#define E100_STRUCT_MASK(line, pinname) \ ++ ((CONFIG_ETRAX_SER##line##_##pinname##_ON_PA_BIT >= 0)? \ ++ (1<<CONFIG_ETRAX_SER##line##_##pinname##_ON_PA_BIT): ( \ ++ (CONFIG_ETRAX_SER##line##_##pinname##_ON_PB_BIT >= 0)? \ ++ (1<<CONFIG_ETRAX_SER##line##_##pinname##_ON_PB_BIT):DUMMY_##pinname##_MASK)) ++ ++#define DUMMY_DTR_MASK 1 ++#define DUMMY_RI_MASK 2 ++#define DUMMY_DSR_MASK 4 ++#define DUMMY_CD_MASK 8 ++static unsigned char dummy_ser[NR_PORTS] = {0xFF, 0xFF, 0xFF,0xFF}; ++ ++/* If not all status pins are used or disabled, use mixed mode */ ++#ifdef CONFIG_ETRAX_SERIAL_PORT0 ++ ++#define SER0_PA_BITSUM (CONFIG_ETRAX_SER0_DTR_ON_PA_BIT+CONFIG_ETRAX_SER0_RI_ON_PA_BIT+CONFIG_ETRAX_SER0_DSR_ON_PA_BIT+CONFIG_ETRAX_SER0_CD_ON_PA_BIT) ++ ++#if SER0_PA_BITSUM != -4 ++# if CONFIG_ETRAX_SER0_DTR_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER0_RI_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER0_DSR_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER0_CD_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++#endif ++ ++#define SER0_PB_BITSUM (CONFIG_ETRAX_SER0_DTR_ON_PB_BIT+CONFIG_ETRAX_SER0_RI_ON_PB_BIT+CONFIG_ETRAX_SER0_DSR_ON_PB_BIT+CONFIG_ETRAX_SER0_CD_ON_PB_BIT) ++ ++#if SER0_PB_BITSUM != -4 ++# if CONFIG_ETRAX_SER0_DTR_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER0_RI_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER0_DSR_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER0_CD_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++#endif ++ ++#endif /* PORT0 */ ++ ++ ++#ifdef CONFIG_ETRAX_SERIAL_PORT1 ++ ++#define SER1_PA_BITSUM (CONFIG_ETRAX_SER1_DTR_ON_PA_BIT+CONFIG_ETRAX_SER1_RI_ON_PA_BIT+CONFIG_ETRAX_SER1_DSR_ON_PA_BIT+CONFIG_ETRAX_SER1_CD_ON_PA_BIT) ++ ++#if SER1_PA_BITSUM != -4 ++# if CONFIG_ETRAX_SER1_DTR_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER1_RI_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER1_DSR_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER1_CD_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++#endif ++ ++#define SER1_PB_BITSUM (CONFIG_ETRAX_SER1_DTR_ON_PB_BIT+CONFIG_ETRAX_SER1_RI_ON_PB_BIT+CONFIG_ETRAX_SER1_DSR_ON_PB_BIT+CONFIG_ETRAX_SER1_CD_ON_PB_BIT) ++ ++#if SER1_PB_BITSUM != -4 ++# if CONFIG_ETRAX_SER1_DTR_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER1_RI_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER1_DSR_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER1_CD_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++#endif ++ ++#endif /* PORT1 */ ++ ++#ifdef CONFIG_ETRAX_SERIAL_PORT2 ++ ++#define SER2_PA_BITSUM (CONFIG_ETRAX_SER2_DTR_ON_PA_BIT+CONFIG_ETRAX_SER2_RI_ON_PA_BIT+CONFIG_ETRAX_SER2_DSR_ON_PA_BIT+CONFIG_ETRAX_SER2_CD_ON_PA_BIT) ++ ++#if SER2_PA_BITSUM != -4 ++# if CONFIG_ETRAX_SER2_DTR_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER2_RI_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER2_DSR_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER2_CD_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++#endif ++ ++#define SER2_PB_BITSUM (CONFIG_ETRAX_SER2_DTR_ON_PB_BIT+CONFIG_ETRAX_SER2_RI_ON_PB_BIT+CONFIG_ETRAX_SER2_DSR_ON_PB_BIT+CONFIG_ETRAX_SER2_CD_ON_PB_BIT) ++ ++#if SER2_PB_BITSUM != -4 ++# if CONFIG_ETRAX_SER2_DTR_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER2_RI_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER2_DSR_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER2_CD_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++#endif ++ ++#endif /* PORT2 */ ++ ++#ifdef CONFIG_ETRAX_SERIAL_PORT3 ++ ++#define SER3_PA_BITSUM (CONFIG_ETRAX_SER3_DTR_ON_PA_BIT+CONFIG_ETRAX_SER3_RI_ON_PA_BIT+CONFIG_ETRAX_SER3_DSR_ON_PA_BIT+CONFIG_ETRAX_SER3_CD_ON_PA_BIT) ++ ++#if SER3_PA_BITSUM != -4 ++# if CONFIG_ETRAX_SER3_DTR_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER3_RI_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER3_DSR_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER3_CD_ON_PA_BIT == -1 ++# ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++#endif ++ ++#define SER3_PB_BITSUM (CONFIG_ETRAX_SER3_DTR_ON_PB_BIT+CONFIG_ETRAX_SER3_RI_ON_PB_BIT+CONFIG_ETRAX_SER3_DSR_ON_PB_BIT+CONFIG_ETRAX_SER3_CD_ON_PB_BIT) ++ ++#if SER3_PB_BITSUM != -4 ++# if CONFIG_ETRAX_SER3_DTR_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER3_RI_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER3_DSR_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++# if CONFIG_ETRAX_SER3_CD_ON_PB_BIT == -1 ++# ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED ++# define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1 ++# endif ++# endif ++#endif ++ ++#endif /* PORT3 */ ++ ++ ++#if defined(CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED) || \ ++ defined(CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED) || \ ++ defined(CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED) || \ ++ defined(CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED) ++#define CONFIG_ETRAX_SERX_DTR_RI_DSR_CD_MIXED ++#endif ++ ++#ifdef CONFIG_ETRAX_SERX_DTR_RI_DSR_CD_MIXED ++/* The pins can be mixed on PA and PB */ ++#define CONTROL_PINS_PORT_NOT_USED(line) \ ++ &dummy_ser[line], &dummy_ser[line], \ ++ &dummy_ser[line], &dummy_ser[line], \ ++ &dummy_ser[line], &dummy_ser[line], \ ++ &dummy_ser[line], &dummy_ser[line], \ ++ DUMMY_DTR_MASK, DUMMY_RI_MASK, DUMMY_DSR_MASK, DUMMY_CD_MASK ++ ++ ++struct control_pins ++{ ++ volatile unsigned char *dtr_port; ++ unsigned char *dtr_shadow; ++ volatile unsigned char *ri_port; ++ unsigned char *ri_shadow; ++ volatile unsigned char *dsr_port; ++ unsigned char *dsr_shadow; ++ volatile unsigned char *cd_port; ++ unsigned char *cd_shadow; ++ ++ unsigned char dtr_mask; ++ unsigned char ri_mask; ++ unsigned char dsr_mask; ++ unsigned char cd_mask; ++}; ++ ++static const struct control_pins e100_modem_pins[NR_PORTS] = ++{ ++ /* Ser 0 */ ++ { ++#ifdef CONFIG_ETRAX_SERIAL_PORT0 ++ E100_STRUCT_PORT(0,DTR), E100_STRUCT_SHADOW(0,DTR), ++ E100_STRUCT_PORT(0,RI), E100_STRUCT_SHADOW(0,RI), ++ E100_STRUCT_PORT(0,DSR), E100_STRUCT_SHADOW(0,DSR), ++ E100_STRUCT_PORT(0,CD), E100_STRUCT_SHADOW(0,CD), ++ E100_STRUCT_MASK(0,DTR), ++ E100_STRUCT_MASK(0,RI), ++ E100_STRUCT_MASK(0,DSR), ++ E100_STRUCT_MASK(0,CD) ++#else ++ CONTROL_PINS_PORT_NOT_USED(0) ++#endif ++ }, ++ ++ /* Ser 1 */ ++ { ++#ifdef CONFIG_ETRAX_SERIAL_PORT1 ++ E100_STRUCT_PORT(1,DTR), E100_STRUCT_SHADOW(1,DTR), ++ E100_STRUCT_PORT(1,RI), E100_STRUCT_SHADOW(1,RI), ++ E100_STRUCT_PORT(1,DSR), E100_STRUCT_SHADOW(1,DSR), ++ E100_STRUCT_PORT(1,CD), E100_STRUCT_SHADOW(1,CD), ++ E100_STRUCT_MASK(1,DTR), ++ E100_STRUCT_MASK(1,RI), ++ E100_STRUCT_MASK(1,DSR), ++ E100_STRUCT_MASK(1,CD) ++#else ++ CONTROL_PINS_PORT_NOT_USED(1) ++#endif ++ }, ++ ++ /* Ser 2 */ ++ { ++#ifdef CONFIG_ETRAX_SERIAL_PORT2 ++ E100_STRUCT_PORT(2,DTR), E100_STRUCT_SHADOW(2,DTR), ++ E100_STRUCT_PORT(2,RI), E100_STRUCT_SHADOW(2,RI), ++ E100_STRUCT_PORT(2,DSR), E100_STRUCT_SHADOW(2,DSR), ++ E100_STRUCT_PORT(2,CD), E100_STRUCT_SHADOW(2,CD), ++ E100_STRUCT_MASK(2,DTR), ++ E100_STRUCT_MASK(2,RI), ++ E100_STRUCT_MASK(2,DSR), ++ E100_STRUCT_MASK(2,CD) ++#else ++ CONTROL_PINS_PORT_NOT_USED(2) ++#endif ++ }, ++ ++ /* Ser 3 */ ++ { ++#ifdef CONFIG_ETRAX_SERIAL_PORT3 ++ E100_STRUCT_PORT(3,DTR), E100_STRUCT_SHADOW(3,DTR), ++ E100_STRUCT_PORT(3,RI), E100_STRUCT_SHADOW(3,RI), ++ E100_STRUCT_PORT(3,DSR), E100_STRUCT_SHADOW(3,DSR), ++ E100_STRUCT_PORT(3,CD), E100_STRUCT_SHADOW(3,CD), ++ E100_STRUCT_MASK(3,DTR), ++ E100_STRUCT_MASK(3,RI), ++ E100_STRUCT_MASK(3,DSR), ++ E100_STRUCT_MASK(3,CD) ++#else ++ CONTROL_PINS_PORT_NOT_USED(3) ++#endif ++ } ++}; ++#else /* CONFIG_ETRAX_SERX_DTR_RI_DSR_CD_MIXED */ ++ ++/* All pins are on either PA or PB for each serial port */ ++#define CONTROL_PINS_PORT_NOT_USED(line) \ ++ &dummy_ser[line], &dummy_ser[line], \ ++ DUMMY_DTR_MASK, DUMMY_RI_MASK, DUMMY_DSR_MASK, DUMMY_CD_MASK ++ ++ ++struct control_pins ++{ ++ volatile unsigned char *port; ++ unsigned char *shadow; ++ ++ unsigned char dtr_mask; ++ unsigned char ri_mask; ++ unsigned char dsr_mask; ++ unsigned char cd_mask; ++}; ++ ++#define dtr_port port ++#define dtr_shadow shadow ++#define ri_port port ++#define ri_shadow shadow ++#define dsr_port port ++#define dsr_shadow shadow ++#define cd_port port ++#define cd_shadow shadow ++ ++static const struct control_pins e100_modem_pins[NR_PORTS] = ++{ ++ /* Ser 0 */ ++ { ++#ifdef CONFIG_ETRAX_SERIAL_PORT0 ++ E100_STRUCT_PORT(0,DTR), E100_STRUCT_SHADOW(0,DTR), ++ E100_STRUCT_MASK(0,DTR), ++ E100_STRUCT_MASK(0,RI), ++ E100_STRUCT_MASK(0,DSR), ++ E100_STRUCT_MASK(0,CD) ++#else ++ CONTROL_PINS_PORT_NOT_USED(0) ++#endif ++ }, ++ ++ /* Ser 1 */ ++ { ++#ifdef CONFIG_ETRAX_SERIAL_PORT1 ++ E100_STRUCT_PORT(1,DTR), E100_STRUCT_SHADOW(1,DTR), ++ E100_STRUCT_MASK(1,DTR), ++ E100_STRUCT_MASK(1,RI), ++ E100_STRUCT_MASK(1,DSR), ++ E100_STRUCT_MASK(1,CD) ++#else ++ CONTROL_PINS_PORT_NOT_USED(1) ++#endif ++ }, ++ ++ /* Ser 2 */ ++ { ++#ifdef CONFIG_ETRAX_SERIAL_PORT2 ++ E100_STRUCT_PORT(2,DTR), E100_STRUCT_SHADOW(2,DTR), ++ E100_STRUCT_MASK(2,DTR), ++ E100_STRUCT_MASK(2,RI), ++ E100_STRUCT_MASK(2,DSR), ++ E100_STRUCT_MASK(2,CD) ++#else ++ CONTROL_PINS_PORT_NOT_USED(2) ++#endif ++ }, ++ ++ /* Ser 3 */ ++ { ++#ifdef CONFIG_ETRAX_SERIAL_PORT3 ++ E100_STRUCT_PORT(3,DTR), E100_STRUCT_SHADOW(3,DTR), ++ E100_STRUCT_MASK(3,DTR), ++ E100_STRUCT_MASK(3,RI), ++ E100_STRUCT_MASK(3,DSR), ++ E100_STRUCT_MASK(3,CD) ++#else ++ CONTROL_PINS_PORT_NOT_USED(3) ++#endif ++ } ++}; ++#endif /* !CONFIG_ETRAX_SERX_DTR_RI_DSR_CD_MIXED */ ++ ++#define E100_RTS_MASK 0x20 ++#define E100_CTS_MASK 0x40 ++ ++/* All serial port signals are active low: ++ * active = 0 -> 3.3V to RS-232 driver -> -12V on RS-232 level ++ * inactive = 1 -> 0V to RS-232 driver -> +12V on RS-232 level ++ * ++ * These macros returns the pin value: 0=0V, >=1 = 3.3V on ETRAX chip ++ */ ++ ++/* Output */ ++#define E100_RTS_GET(info) ((info)->rx_ctrl & E100_RTS_MASK) ++/* Input */ ++#define E100_CTS_GET(info) ((info)->ioport[REG_STATUS] & E100_CTS_MASK) ++ ++/* These are typically PA or PB and 0 means 0V, 1 means 3.3V */ ++/* Is an output */ ++#define E100_DTR_GET(info) ((*e100_modem_pins[(info)->line].dtr_shadow) & e100_modem_pins[(info)->line].dtr_mask) ++ ++/* Normally inputs */ ++#define E100_RI_GET(info) ((*e100_modem_pins[(info)->line].ri_port) & e100_modem_pins[(info)->line].ri_mask) ++#define E100_CD_GET(info) ((*e100_modem_pins[(info)->line].cd_port) & e100_modem_pins[(info)->line].cd_mask) ++ ++/* Input */ ++#define E100_DSR_GET(info) ((*e100_modem_pins[(info)->line].dsr_port) & e100_modem_pins[(info)->line].dsr_mask) ++ ++ ++/* ++ * tmp_buf is used as a temporary buffer by serial_write. We need to ++ * lock it in case the memcpy_fromfs blocks while swapping in a page, ++ * and some other program tries to do a serial write at the same time. ++ * Since the lock will only come under contention when the system is ++ * swapping and available memory is low, it makes sense to share one ++ * buffer across all the serial ports, since it significantly saves ++ * memory if large numbers of serial ports are open. ++ */ ++static unsigned char *tmp_buf; ++static DEFINE_MUTEX(tmp_buf_mutex); ++ ++/* Calculate the chartime depending on baudrate, numbor of bits etc. */ ++static void update_char_time(struct e100_serial * info) ++{ ++ tcflag_t cflags = info->port.tty->termios->c_cflag; ++ int bits; ++ ++ /* calc. number of bits / data byte */ ++ /* databits + startbit and 1 stopbit */ ++ if ((cflags & CSIZE) == CS7) ++ bits = 9; ++ else ++ bits = 10; ++ ++ if (cflags & CSTOPB) /* 2 stopbits ? */ ++ bits++; ++ ++ if (cflags & PARENB) /* parity bit ? */ ++ bits++; ++ ++ /* calc timeout */ ++ info->char_time_usec = ((bits * 1000000) / info->baud) + 1; ++ info->flush_time_usec = 4*info->char_time_usec; ++ if (info->flush_time_usec < MIN_FLUSH_TIME_USEC) ++ info->flush_time_usec = MIN_FLUSH_TIME_USEC; ++ ++} ++ ++/* ++ * This function maps from the Bxxxx defines in asm/termbits.h into real ++ * baud rates. ++ */ ++ ++static int ++cflag_to_baud(unsigned int cflag) ++{ ++ static int baud_table[] = { ++ 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, ++ 4800, 9600, 19200, 38400 }; ++ ++ static int ext_baud_table[] = { ++ 0, 57600, 115200, 230400, 460800, 921600, 1843200, 6250000, ++ 0, 0, 0, 0, 0, 0, 0, 0 }; ++ ++ if (cflag & CBAUDEX) ++ return ext_baud_table[(cflag & CBAUD) & ~CBAUDEX]; ++ else ++ return baud_table[cflag & CBAUD]; ++} ++ ++/* and this maps to an etrax100 hardware baud constant */ ++ ++static unsigned char ++cflag_to_etrax_baud(unsigned int cflag) ++{ ++ char retval; ++ ++ static char baud_table[] = { ++ -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, -1, 3, 4, 5, 6, 7 }; ++ ++ static char ext_baud_table[] = { ++ -1, 8, 9, 10, 11, 12, 13, 14, -1, -1, -1, -1, -1, -1, -1, -1 }; ++ ++ if (cflag & CBAUDEX) ++ retval = ext_baud_table[(cflag & CBAUD) & ~CBAUDEX]; ++ else ++ retval = baud_table[cflag & CBAUD]; ++ ++ if (retval < 0) { ++ printk(KERN_WARNING "serdriver tried setting invalid baud rate, flags %x.\n", cflag); ++ retval = 5; /* choose default 9600 instead */ ++ } ++ ++ return retval | (retval << 4); /* choose same for both TX and RX */ ++} ++ ++ ++/* Various static support functions */ ++ ++/* Functions to set or clear DTR/RTS on the requested line */ ++/* It is complicated by the fact that RTS is a serial port register, while ++ * DTR might not be implemented in the HW at all, and if it is, it can be on ++ * any general port. ++ */ ++ ++ ++static inline void ++e100_dtr(struct e100_serial *info, int set) ++{ ++#ifndef CONFIG_SVINTO_SIM ++ unsigned char mask = e100_modem_pins[info->line].dtr_mask; ++ ++#ifdef SERIAL_DEBUG_IO ++ printk("ser%i dtr %i mask: 0x%02X\n", info->line, set, mask); ++ printk("ser%i shadow before 0x%02X get: %i\n", ++ info->line, *e100_modem_pins[info->line].dtr_shadow, ++ E100_DTR_GET(info)); ++#endif ++ /* DTR is active low */ ++ { ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ *e100_modem_pins[info->line].dtr_shadow &= ~mask; ++ *e100_modem_pins[info->line].dtr_shadow |= (set ? 0 : mask); ++ *e100_modem_pins[info->line].dtr_port = *e100_modem_pins[info->line].dtr_shadow; ++ local_irq_restore(flags); ++ } ++ ++#ifdef SERIAL_DEBUG_IO ++ printk("ser%i shadow after 0x%02X get: %i\n", ++ info->line, *e100_modem_pins[info->line].dtr_shadow, ++ E100_DTR_GET(info)); ++#endif ++#endif ++} ++ ++/* set = 0 means 3.3V on the pin, bitvalue: 0=active, 1=inactive ++ * 0=0V , 1=3.3V ++ */ ++static inline void ++e100_rts(struct e100_serial *info, int set) ++{ ++#ifndef CONFIG_SVINTO_SIM ++ unsigned long flags; ++ local_irq_save(flags); ++ info->rx_ctrl &= ~E100_RTS_MASK; ++ info->rx_ctrl |= (set ? 0 : E100_RTS_MASK); /* RTS is active low */ ++ info->ioport[REG_REC_CTRL] = info->rx_ctrl; ++ local_irq_restore(flags); ++#ifdef SERIAL_DEBUG_IO ++ printk("ser%i rts %i\n", info->line, set); ++#endif ++#endif ++} ++ ++ ++/* If this behaves as a modem, RI and CD is an output */ ++static inline void ++e100_ri_out(struct e100_serial *info, int set) ++{ ++#ifndef CONFIG_SVINTO_SIM ++ /* RI is active low */ ++ { ++ unsigned char mask = e100_modem_pins[info->line].ri_mask; ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ *e100_modem_pins[info->line].ri_shadow &= ~mask; ++ *e100_modem_pins[info->line].ri_shadow |= (set ? 0 : mask); ++ *e100_modem_pins[info->line].ri_port = *e100_modem_pins[info->line].ri_shadow; ++ local_irq_restore(flags); ++ } ++#endif ++} ++static inline void ++e100_cd_out(struct e100_serial *info, int set) ++{ ++#ifndef CONFIG_SVINTO_SIM ++ /* CD is active low */ ++ { ++ unsigned char mask = e100_modem_pins[info->line].cd_mask; ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ *e100_modem_pins[info->line].cd_shadow &= ~mask; ++ *e100_modem_pins[info->line].cd_shadow |= (set ? 0 : mask); ++ *e100_modem_pins[info->line].cd_port = *e100_modem_pins[info->line].cd_shadow; ++ local_irq_restore(flags); ++ } ++#endif ++} ++ ++static inline void ++e100_disable_rx(struct e100_serial *info) ++{ ++#ifndef CONFIG_SVINTO_SIM ++ /* disable the receiver */ ++ info->ioport[REG_REC_CTRL] = ++ (info->rx_ctrl &= ~IO_MASK(R_SERIAL0_REC_CTRL, rec_enable)); ++#endif ++} ++ ++static inline void ++e100_enable_rx(struct e100_serial *info) ++{ ++#ifndef CONFIG_SVINTO_SIM ++ /* enable the receiver */ ++ info->ioport[REG_REC_CTRL] = ++ (info->rx_ctrl |= IO_MASK(R_SERIAL0_REC_CTRL, rec_enable)); ++#endif ++} ++ ++/* the rx DMA uses both the dma_descr and the dma_eop interrupts */ ++ ++static inline void ++e100_disable_rxdma_irq(struct e100_serial *info) ++{ ++#ifdef SERIAL_DEBUG_INTR ++ printk("rxdma_irq(%d): 0\n",info->line); ++#endif ++ DINTR1(DEBUG_LOG(info->line,"IRQ disable_rxdma_irq %i\n", info->line)); ++ *R_IRQ_MASK2_CLR = (info->irq << 2) | (info->irq << 3); ++} ++ ++static inline void ++e100_enable_rxdma_irq(struct e100_serial *info) ++{ ++#ifdef SERIAL_DEBUG_INTR ++ printk("rxdma_irq(%d): 1\n",info->line); ++#endif ++ DINTR1(DEBUG_LOG(info->line,"IRQ enable_rxdma_irq %i\n", info->line)); ++ *R_IRQ_MASK2_SET = (info->irq << 2) | (info->irq << 3); ++} ++ ++/* the tx DMA uses only dma_descr interrupt */ ++ ++static void e100_disable_txdma_irq(struct e100_serial *info) ++{ ++#ifdef SERIAL_DEBUG_INTR ++ printk("txdma_irq(%d): 0\n",info->line); ++#endif ++ DINTR1(DEBUG_LOG(info->line,"IRQ disable_txdma_irq %i\n", info->line)); ++ *R_IRQ_MASK2_CLR = info->irq; ++} ++ ++static void e100_enable_txdma_irq(struct e100_serial *info) ++{ ++#ifdef SERIAL_DEBUG_INTR ++ printk("txdma_irq(%d): 1\n",info->line); ++#endif ++ DINTR1(DEBUG_LOG(info->line,"IRQ enable_txdma_irq %i\n", info->line)); ++ *R_IRQ_MASK2_SET = info->irq; ++} ++ ++static void e100_disable_txdma_channel(struct e100_serial *info) ++{ ++ unsigned long flags; ++ ++ /* Disable output DMA channel for the serial port in question ++ * ( set to something other than serialX) ++ */ ++ local_irq_save(flags); ++ DFLOW(DEBUG_LOG(info->line, "disable_txdma_channel %i\n", info->line)); ++ if (info->line == 0) { ++ if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma6)) == ++ IO_STATE(R_GEN_CONFIG, dma6, serial0)) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma6); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma6, unused); ++ } ++ } else if (info->line == 1) { ++ if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma8)) == ++ IO_STATE(R_GEN_CONFIG, dma8, serial1)) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma8); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma8, usb); ++ } ++ } else if (info->line == 2) { ++ if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma2)) == ++ IO_STATE(R_GEN_CONFIG, dma2, serial2)) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma2); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma2, par0); ++ } ++ } else if (info->line == 3) { ++ if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma4)) == ++ IO_STATE(R_GEN_CONFIG, dma4, serial3)) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma4); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma4, par1); ++ } ++ } ++ *R_GEN_CONFIG = genconfig_shadow; ++ local_irq_restore(flags); ++} ++ ++ ++static void e100_enable_txdma_channel(struct e100_serial *info) ++{ ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ DFLOW(DEBUG_LOG(info->line, "enable_txdma_channel %i\n", info->line)); ++ /* Enable output DMA channel for the serial port in question */ ++ if (info->line == 0) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma6); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma6, serial0); ++ } else if (info->line == 1) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma8); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma8, serial1); ++ } else if (info->line == 2) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma2); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma2, serial2); ++ } else if (info->line == 3) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma4); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma4, serial3); ++ } ++ *R_GEN_CONFIG = genconfig_shadow; ++ local_irq_restore(flags); ++} ++ ++static void e100_disable_rxdma_channel(struct e100_serial *info) ++{ ++ unsigned long flags; ++ ++ /* Disable input DMA channel for the serial port in question ++ * ( set to something other than serialX) ++ */ ++ local_irq_save(flags); ++ if (info->line == 0) { ++ if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma7)) == ++ IO_STATE(R_GEN_CONFIG, dma7, serial0)) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma7); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma7, unused); ++ } ++ } else if (info->line == 1) { ++ if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma9)) == ++ IO_STATE(R_GEN_CONFIG, dma9, serial1)) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma9); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma9, usb); ++ } ++ } else if (info->line == 2) { ++ if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma3)) == ++ IO_STATE(R_GEN_CONFIG, dma3, serial2)) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma3); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma3, par0); ++ } ++ } else if (info->line == 3) { ++ if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma5)) == ++ IO_STATE(R_GEN_CONFIG, dma5, serial3)) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma5); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma5, par1); ++ } ++ } ++ *R_GEN_CONFIG = genconfig_shadow; ++ local_irq_restore(flags); ++} ++ ++ ++static void e100_enable_rxdma_channel(struct e100_serial *info) ++{ ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ /* Enable input DMA channel for the serial port in question */ ++ if (info->line == 0) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma7); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma7, serial0); ++ } else if (info->line == 1) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma9); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma9, serial1); ++ } else if (info->line == 2) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma3); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma3, serial2); ++ } else if (info->line == 3) { ++ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma5); ++ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma5, serial3); ++ } ++ *R_GEN_CONFIG = genconfig_shadow; ++ local_irq_restore(flags); ++} ++ ++#ifdef SERIAL_HANDLE_EARLY_ERRORS ++/* in order to detect and fix errors on the first byte ++ we have to use the serial interrupts as well. */ ++ ++static inline void ++e100_disable_serial_data_irq(struct e100_serial *info) ++{ ++#ifdef SERIAL_DEBUG_INTR ++ printk("ser_irq(%d): 0\n",info->line); ++#endif ++ DINTR1(DEBUG_LOG(info->line,"IRQ disable data_irq %i\n", info->line)); ++ *R_IRQ_MASK1_CLR = (1U << (8+2*info->line)); ++} ++ ++static inline void ++e100_enable_serial_data_irq(struct e100_serial *info) ++{ ++#ifdef SERIAL_DEBUG_INTR ++ printk("ser_irq(%d): 1\n",info->line); ++ printk("**** %d = %d\n", ++ (8+2*info->line), ++ (1U << (8+2*info->line))); ++#endif ++ DINTR1(DEBUG_LOG(info->line,"IRQ enable data_irq %i\n", info->line)); ++ *R_IRQ_MASK1_SET = (1U << (8+2*info->line)); ++} ++#endif ++ ++static inline void ++e100_disable_serial_tx_ready_irq(struct e100_serial *info) ++{ ++#ifdef SERIAL_DEBUG_INTR ++ printk("ser_tx_irq(%d): 0\n",info->line); ++#endif ++ DINTR1(DEBUG_LOG(info->line,"IRQ disable ready_irq %i\n", info->line)); ++ *R_IRQ_MASK1_CLR = (1U << (8+1+2*info->line)); ++} ++ ++static inline void ++e100_enable_serial_tx_ready_irq(struct e100_serial *info) ++{ ++#ifdef SERIAL_DEBUG_INTR ++ printk("ser_tx_irq(%d): 1\n",info->line); ++ printk("**** %d = %d\n", ++ (8+1+2*info->line), ++ (1U << (8+1+2*info->line))); ++#endif ++ DINTR2(DEBUG_LOG(info->line,"IRQ enable ready_irq %i\n", info->line)); ++ *R_IRQ_MASK1_SET = (1U << (8+1+2*info->line)); ++} ++ ++static inline void e100_enable_rx_irq(struct e100_serial *info) ++{ ++ if (info->uses_dma_in) ++ e100_enable_rxdma_irq(info); ++ else ++ e100_enable_serial_data_irq(info); ++} ++static inline void e100_disable_rx_irq(struct e100_serial *info) ++{ ++ if (info->uses_dma_in) ++ e100_disable_rxdma_irq(info); ++ else ++ e100_disable_serial_data_irq(info); ++} ++ ++#if defined(CONFIG_ETRAX_RS485) ++/* Enable RS-485 mode on selected port. This is UGLY. */ ++static int ++e100_enable_rs485(struct tty_struct *tty, struct serial_rs485 *r) ++{ ++ struct e100_serial * info = (struct e100_serial *)tty->driver_data; ++ ++#if defined(CONFIG_ETRAX_RS485_ON_PA) ++ *R_PORT_PA_DATA = port_pa_data_shadow |= (1 << rs485_pa_bit); ++#endif ++#if defined(CONFIG_ETRAX_RS485_ON_PORT_G) ++ REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow, ++ rs485_port_g_bit, 1); ++#endif ++#if defined(CONFIG_ETRAX_RS485_LTC1387) ++ REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow, ++ CONFIG_ETRAX_RS485_LTC1387_DXEN_PORT_G_BIT, 1); ++ REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow, ++ CONFIG_ETRAX_RS485_LTC1387_RXEN_PORT_G_BIT, 1); ++#endif ++ ++ info->rs485.flags = r->flags; ++ if (r->delay_rts_before_send >= 1000) ++ info->rs485.delay_rts_before_send = 1000; ++ else ++ info->rs485.delay_rts_before_send = r->delay_rts_before_send; ++/* printk("rts: on send = %i, after = %i, enabled = %i", ++ info->rs485.rts_on_send, ++ info->rs485.rts_after_sent, ++ info->rs485.enabled ++ ); ++*/ ++ return 0; ++} ++ ++static int ++e100_write_rs485(struct tty_struct *tty, ++ const unsigned char *buf, int count) ++{ ++ struct e100_serial * info = (struct e100_serial *)tty->driver_data; ++ int old_value = (info->rs485.flags) & SER_RS485_ENABLED; ++ ++ /* rs485 is always implicitly enabled if we're using the ioctl() ++ * but it doesn't have to be set in the serial_rs485 ++ * (to be backward compatible with old apps) ++ * So we store, set and restore it. ++ */ ++ info->rs485.flags |= SER_RS485_ENABLED; ++ /* rs_write now deals with RS485 if enabled */ ++ count = rs_write(tty, buf, count); ++ if (!old_value) ++ info->rs485.flags &= ~(SER_RS485_ENABLED); ++ return count; ++} ++ ++#ifdef CONFIG_ETRAX_FAST_TIMER ++/* Timer function to toggle RTS when using FAST_TIMER */ ++static void rs485_toggle_rts_timer_function(unsigned long data) ++{ ++ struct e100_serial *info = (struct e100_serial *)data; ++ ++ fast_timers_rs485[info->line].function = NULL; ++ e100_rts(info, (info->rs485.flags & SER_RS485_RTS_AFTER_SEND)); ++#if defined(CONFIG_ETRAX_RS485_DISABLE_RECEIVER) ++ e100_enable_rx(info); ++ e100_enable_rx_irq(info); ++#endif ++} ++#endif ++#endif /* CONFIG_ETRAX_RS485 */ ++ ++/* ++ * ------------------------------------------------------------ ++ * rs_stop() and rs_start() ++ * ++ * This routines are called before setting or resetting tty->stopped. ++ * They enable or disable transmitter using the XOFF registers, as necessary. ++ * ------------------------------------------------------------ ++ */ ++ ++static void ++rs_stop(struct tty_struct *tty) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ if (info) { ++ unsigned long flags; ++ unsigned long xoff; ++ ++ local_irq_save(flags); ++ DFLOW(DEBUG_LOG(info->line, "XOFF rs_stop xmit %i\n", ++ CIRC_CNT(info->xmit.head, ++ info->xmit.tail,SERIAL_XMIT_SIZE))); ++ ++ xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, ++ STOP_CHAR(info->port.tty)); ++ xoff |= IO_STATE(R_SERIAL0_XOFF, tx_stop, stop); ++ if (tty->termios->c_iflag & IXON ) { ++ xoff |= IO_STATE(R_SERIAL0_XOFF, auto_xoff, enable); ++ } ++ ++ *((unsigned long *)&info->ioport[REG_XOFF]) = xoff; ++ local_irq_restore(flags); ++ } ++} ++ ++static void ++rs_start(struct tty_struct *tty) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ if (info) { ++ unsigned long flags; ++ unsigned long xoff; ++ ++ local_irq_save(flags); ++ DFLOW(DEBUG_LOG(info->line, "XOFF rs_start xmit %i\n", ++ CIRC_CNT(info->xmit.head, ++ info->xmit.tail,SERIAL_XMIT_SIZE))); ++ xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, STOP_CHAR(tty)); ++ xoff |= IO_STATE(R_SERIAL0_XOFF, tx_stop, enable); ++ if (tty->termios->c_iflag & IXON ) { ++ xoff |= IO_STATE(R_SERIAL0_XOFF, auto_xoff, enable); ++ } ++ ++ *((unsigned long *)&info->ioport[REG_XOFF]) = xoff; ++ if (!info->uses_dma_out && ++ info->xmit.head != info->xmit.tail && info->xmit.buf) ++ e100_enable_serial_tx_ready_irq(info); ++ ++ local_irq_restore(flags); ++ } ++} ++ ++/* ++ * ---------------------------------------------------------------------- ++ * ++ * Here starts the interrupt handling routines. All of the following ++ * subroutines are declared as inline and are folded into ++ * rs_interrupt(). They were separated out for readability's sake. ++ * ++ * Note: rs_interrupt() is a "fast" interrupt, which means that it ++ * runs with interrupts turned off. People who may want to modify ++ * rs_interrupt() should try to keep the interrupt handler as fast as ++ * possible. After you are done making modifications, it is not a bad ++ * idea to do: ++ * ++ * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c ++ * ++ * and look at the resulting assemble code in serial.s. ++ * ++ * - Ted Ts'o (tytso@mit.edu), 7-Mar-93 ++ * ----------------------------------------------------------------------- ++ */ ++ ++/* ++ * This routine is used by the interrupt handler to schedule ++ * processing in the software interrupt portion of the driver. ++ */ ++static void rs_sched_event(struct e100_serial *info, int event) ++{ ++ if (info->event & (1 << event)) ++ return; ++ info->event |= 1 << event; ++ schedule_work(&info->work); ++} ++ ++/* The output DMA channel is free - use it to send as many chars as possible ++ * NOTES: ++ * We don't pay attention to info->x_char, which means if the TTY wants to ++ * use XON/XOFF it will set info->x_char but we won't send any X char! ++ * ++ * To implement this, we'd just start a DMA send of 1 byte pointing at a ++ * buffer containing the X char, and skip updating xmit. We'd also have to ++ * check if the last sent char was the X char when we enter this function ++ * the next time, to avoid updating xmit with the sent X value. ++ */ ++ ++static void ++transmit_chars_dma(struct e100_serial *info) ++{ ++ unsigned int c, sentl; ++ struct etrax_dma_descr *descr; ++ ++#ifdef CONFIG_SVINTO_SIM ++ /* This will output too little if tail is not 0 always since ++ * we don't reloop to send the other part. Anyway this SHOULD be a ++ * no-op - transmit_chars_dma would never really be called during sim ++ * since rs_write does not write into the xmit buffer then. ++ */ ++ if (info->xmit.tail) ++ printk("Error in serial.c:transmit_chars-dma(), tail!=0\n"); ++ if (info->xmit.head != info->xmit.tail) { ++ SIMCOUT(info->xmit.buf + info->xmit.tail, ++ CIRC_CNT(info->xmit.head, ++ info->xmit.tail, ++ SERIAL_XMIT_SIZE)); ++ info->xmit.head = info->xmit.tail; /* move back head */ ++ info->tr_running = 0; ++ } ++ return; ++#endif ++ /* acknowledge both dma_descr and dma_eop irq in R_DMA_CHx_CLR_INTR */ ++ *info->oclrintradr = ++ IO_STATE(R_DMA_CH6_CLR_INTR, clr_descr, do) | ++ IO_STATE(R_DMA_CH6_CLR_INTR, clr_eop, do); ++ ++#ifdef SERIAL_DEBUG_INTR ++ if (info->line == SERIAL_DEBUG_LINE) ++ printk("tc\n"); ++#endif ++ if (!info->tr_running) { ++ /* weirdo... we shouldn't get here! */ ++ printk(KERN_WARNING "Achtung: transmit_chars_dma with !tr_running\n"); ++ return; ++ } ++ ++ descr = &info->tr_descr; ++ ++ /* first get the amount of bytes sent during the last DMA transfer, ++ and update xmit accordingly */ ++ ++ /* if the stop bit was not set, all data has been sent */ ++ if (!(descr->status & d_stop)) { ++ sentl = descr->sw_len; ++ } else ++ /* otherwise we find the amount of data sent here */ ++ sentl = descr->hw_len; ++ ++ DFLOW(DEBUG_LOG(info->line, "TX %i done\n", sentl)); ++ ++ /* update stats */ ++ info->icount.tx += sentl; ++ ++ /* update xmit buffer */ ++ info->xmit.tail = (info->xmit.tail + sentl) & (SERIAL_XMIT_SIZE - 1); ++ ++ /* if there is only a few chars left in the buf, wake up the blocked ++ write if any */ ++ if (CIRC_CNT(info->xmit.head, ++ info->xmit.tail, ++ SERIAL_XMIT_SIZE) < WAKEUP_CHARS) ++ rs_sched_event(info, RS_EVENT_WRITE_WAKEUP); ++ ++ /* find out the largest amount of consecutive bytes we want to send now */ ++ ++ c = CIRC_CNT_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE); ++ ++ /* Don't send all in one DMA transfer - divide it so we wake up ++ * application before all is sent ++ */ ++ ++ if (c >= 4*WAKEUP_CHARS) ++ c = c/2; ++ ++ if (c <= 0) { ++ /* our job here is done, don't schedule any new DMA transfer */ ++ info->tr_running = 0; ++ ++#if defined(CONFIG_ETRAX_RS485) && defined(CONFIG_ETRAX_FAST_TIMER) ++ if (info->rs485.flags & SER_RS485_ENABLED) { ++ /* Set a short timer to toggle RTS */ ++ start_one_shot_timer(&fast_timers_rs485[info->line], ++ rs485_toggle_rts_timer_function, ++ (unsigned long)info, ++ info->char_time_usec*2, ++ "RS-485"); ++ } ++#endif /* RS485 */ ++ return; ++ } ++ ++ /* ok we can schedule a dma send of c chars starting at info->xmit.tail */ ++ /* set up the descriptor correctly for output */ ++ DFLOW(DEBUG_LOG(info->line, "TX %i\n", c)); ++ descr->ctrl = d_int | d_eol | d_wait; /* Wait needed for tty_wait_until_sent() */ ++ descr->sw_len = c; ++ descr->buf = virt_to_phys(info->xmit.buf + info->xmit.tail); ++ descr->status = 0; ++ ++ *info->ofirstadr = virt_to_phys(descr); /* write to R_DMAx_FIRST */ ++ *info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, start); ++ ++ /* DMA is now running (hopefully) */ ++} /* transmit_chars_dma */ ++ ++static void ++start_transmit(struct e100_serial *info) ++{ ++#if 0 ++ if (info->line == SERIAL_DEBUG_LINE) ++ printk("x\n"); ++#endif ++ ++ info->tr_descr.sw_len = 0; ++ info->tr_descr.hw_len = 0; ++ info->tr_descr.status = 0; ++ info->tr_running = 1; ++ if (info->uses_dma_out) ++ transmit_chars_dma(info); ++ else ++ e100_enable_serial_tx_ready_irq(info); ++} /* start_transmit */ ++ ++#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER ++static int serial_fast_timer_started = 0; ++static int serial_fast_timer_expired = 0; ++static void flush_timeout_function(unsigned long data); ++#define START_FLUSH_FAST_TIMER_TIME(info, string, usec) {\ ++ unsigned long timer_flags; \ ++ local_irq_save(timer_flags); \ ++ if (fast_timers[info->line].function == NULL) { \ ++ serial_fast_timer_started++; \ ++ TIMERD(DEBUG_LOG(info->line, "start_timer %i ", info->line)); \ ++ TIMERD(DEBUG_LOG(info->line, "num started: %i\n", serial_fast_timer_started)); \ ++ start_one_shot_timer(&fast_timers[info->line], \ ++ flush_timeout_function, \ ++ (unsigned long)info, \ ++ (usec), \ ++ string); \ ++ } \ ++ else { \ ++ TIMERD(DEBUG_LOG(info->line, "timer %i already running\n", info->line)); \ ++ } \ ++ local_irq_restore(timer_flags); \ ++} ++#define START_FLUSH_FAST_TIMER(info, string) START_FLUSH_FAST_TIMER_TIME(info, string, info->flush_time_usec) ++ ++#else ++#define START_FLUSH_FAST_TIMER_TIME(info, string, usec) ++#define START_FLUSH_FAST_TIMER(info, string) ++#endif ++ ++static struct etrax_recv_buffer * ++alloc_recv_buffer(unsigned int size) ++{ ++ struct etrax_recv_buffer *buffer; ++ ++ if (!(buffer = kmalloc(sizeof *buffer + size, GFP_ATOMIC))) ++ return NULL; ++ ++ buffer->next = NULL; ++ buffer->length = 0; ++ buffer->error = TTY_NORMAL; ++ ++ return buffer; ++} ++ ++static void ++append_recv_buffer(struct e100_serial *info, struct etrax_recv_buffer *buffer) ++{ ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ ++ if (!info->first_recv_buffer) ++ info->first_recv_buffer = buffer; ++ else ++ info->last_recv_buffer->next = buffer; ++ ++ info->last_recv_buffer = buffer; ++ ++ info->recv_cnt += buffer->length; ++ if (info->recv_cnt > info->max_recv_cnt) ++ info->max_recv_cnt = info->recv_cnt; ++ ++ local_irq_restore(flags); ++} ++ ++static int ++add_char_and_flag(struct e100_serial *info, unsigned char data, unsigned char flag) ++{ ++ struct etrax_recv_buffer *buffer; ++ if (info->uses_dma_in) { ++ if (!(buffer = alloc_recv_buffer(4))) ++ return 0; ++ ++ buffer->length = 1; ++ buffer->error = flag; ++ buffer->buffer[0] = data; ++ ++ append_recv_buffer(info, buffer); ++ ++ info->icount.rx++; ++ } else { ++ struct tty_struct *tty = info->port.tty; ++ tty_insert_flip_char(tty, data, flag); ++ info->icount.rx++; ++ } ++ ++ return 1; ++} ++ ++static unsigned int handle_descr_data(struct e100_serial *info, ++ struct etrax_dma_descr *descr, ++ unsigned int recvl) ++{ ++ struct etrax_recv_buffer *buffer = phys_to_virt(descr->buf) - sizeof *buffer; ++ ++ if (info->recv_cnt + recvl > 65536) { ++ printk(KERN_CRIT ++ "%s: Too much pending incoming serial data! Dropping %u bytes.\n", __func__, recvl); ++ return 0; ++ } ++ ++ buffer->length = recvl; ++ ++ if (info->errorcode == ERRCODE_SET_BREAK) ++ buffer->error = TTY_BREAK; ++ info->errorcode = 0; ++ ++ append_recv_buffer(info, buffer); ++ ++ if (!(buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE))) ++ panic("%s: Failed to allocate memory for receive buffer!\n", __func__); ++ ++ descr->buf = virt_to_phys(buffer->buffer); ++ ++ return recvl; ++} ++ ++static unsigned int handle_all_descr_data(struct e100_serial *info) ++{ ++ struct etrax_dma_descr *descr; ++ unsigned int recvl; ++ unsigned int ret = 0; ++ ++ while (1) ++ { ++ descr = &info->rec_descr[info->cur_rec_descr]; ++ ++ if (descr == phys_to_virt(*info->idescradr)) ++ break; ++ ++ if (++info->cur_rec_descr == SERIAL_RECV_DESCRIPTORS) ++ info->cur_rec_descr = 0; ++ ++ /* find out how many bytes were read */ ++ ++ /* if the eop bit was not set, all data has been received */ ++ if (!(descr->status & d_eop)) { ++ recvl = descr->sw_len; ++ } else { ++ /* otherwise we find the amount of data received here */ ++ recvl = descr->hw_len; ++ } ++ ++ /* Reset the status information */ ++ descr->status = 0; ++ ++ DFLOW( DEBUG_LOG(info->line, "RX %lu\n", recvl); ++ if (info->port.tty->stopped) { ++ unsigned char *buf = phys_to_virt(descr->buf); ++ DEBUG_LOG(info->line, "rx 0x%02X\n", buf[0]); ++ DEBUG_LOG(info->line, "rx 0x%02X\n", buf[1]); ++ DEBUG_LOG(info->line, "rx 0x%02X\n", buf[2]); ++ } ++ ); ++ ++ /* update stats */ ++ info->icount.rx += recvl; ++ ++ ret += handle_descr_data(info, descr, recvl); ++ } ++ ++ return ret; ++} ++ ++static void receive_chars_dma(struct e100_serial *info) ++{ ++ struct tty_struct *tty; ++ unsigned char rstat; ++ ++#ifdef CONFIG_SVINTO_SIM ++ /* No receive in the simulator. Will probably be when the rest of ++ * the serial interface works, and this piece will just be removed. ++ */ ++ return; ++#endif ++ ++ /* Acknowledge both dma_descr and dma_eop irq in R_DMA_CHx_CLR_INTR */ ++ *info->iclrintradr = ++ IO_STATE(R_DMA_CH6_CLR_INTR, clr_descr, do) | ++ IO_STATE(R_DMA_CH6_CLR_INTR, clr_eop, do); ++ ++ tty = info->port.tty; ++ if (!tty) /* Something wrong... */ ++ return; ++ ++#ifdef SERIAL_HANDLE_EARLY_ERRORS ++ if (info->uses_dma_in) ++ e100_enable_serial_data_irq(info); ++#endif ++ ++ if (info->errorcode == ERRCODE_INSERT_BREAK) ++ add_char_and_flag(info, '\0', TTY_BREAK); ++ ++ handle_all_descr_data(info); ++ ++ /* Read the status register to detect errors */ ++ rstat = info->ioport[REG_STATUS]; ++ if (rstat & IO_MASK(R_SERIAL0_STATUS, xoff_detect) ) { ++ DFLOW(DEBUG_LOG(info->line, "XOFF detect stat %x\n", rstat)); ++ } ++ ++ if (rstat & SER_ERROR_MASK) { ++ /* If we got an error, we must reset it by reading the ++ * data_in field ++ */ ++ unsigned char data = info->ioport[REG_DATA]; ++ ++ PROCSTAT(ser_stat[info->line].errors_cnt++); ++ DEBUG_LOG(info->line, "#dERR: s d 0x%04X\n", ++ ((rstat & SER_ERROR_MASK) << 8) | data); ++ ++ if (rstat & SER_PAR_ERR_MASK) ++ add_char_and_flag(info, data, TTY_PARITY); ++ else if (rstat & SER_OVERRUN_MASK) ++ add_char_and_flag(info, data, TTY_OVERRUN); ++ else if (rstat & SER_FRAMING_ERR_MASK) ++ add_char_and_flag(info, data, TTY_FRAME); ++ } ++ ++ START_FLUSH_FAST_TIMER(info, "receive_chars"); ++ ++ /* Restart the receiving DMA */ ++ *info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, restart); ++} ++ ++static int start_recv_dma(struct e100_serial *info) ++{ ++ struct etrax_dma_descr *descr = info->rec_descr; ++ struct etrax_recv_buffer *buffer; ++ int i; ++ ++ /* Set up the receiving descriptors */ ++ for (i = 0; i < SERIAL_RECV_DESCRIPTORS; i++) { ++ if (!(buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE))) ++ panic("%s: Failed to allocate memory for receive buffer!\n", __func__); ++ ++ descr[i].ctrl = d_int; ++ descr[i].buf = virt_to_phys(buffer->buffer); ++ descr[i].sw_len = SERIAL_DESCR_BUF_SIZE; ++ descr[i].hw_len = 0; ++ descr[i].status = 0; ++ descr[i].next = virt_to_phys(&descr[i+1]); ++ } ++ ++ /* Link the last descriptor to the first */ ++ descr[i-1].next = virt_to_phys(&descr[0]); ++ ++ /* Start with the first descriptor in the list */ ++ info->cur_rec_descr = 0; ++ ++ /* Start the DMA */ ++ *info->ifirstadr = virt_to_phys(&descr[info->cur_rec_descr]); ++ *info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, start); ++ ++ /* Input DMA should be running now */ ++ return 1; ++} ++ ++static void ++start_receive(struct e100_serial *info) ++{ ++#ifdef CONFIG_SVINTO_SIM ++ /* No receive in the simulator. Will probably be when the rest of ++ * the serial interface works, and this piece will just be removed. ++ */ ++ return; ++#endif ++ if (info->uses_dma_in) { ++ /* reset the input dma channel to be sure it works */ ++ ++ *info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, reset); ++ while (IO_EXTRACT(R_DMA_CH6_CMD, cmd, *info->icmdadr) == ++ IO_STATE_VALUE(R_DMA_CH6_CMD, cmd, reset)); ++ ++ start_recv_dma(info); ++ } ++} ++ ++ ++/* the bits in the MASK2 register are laid out like this: ++ DMAI_EOP DMAI_DESCR DMAO_EOP DMAO_DESCR ++ where I is the input channel and O is the output channel for the port. ++ info->irq is the bit number for the DMAO_DESCR so to check the others we ++ shift info->irq to the left. ++*/ ++ ++/* dma output channel interrupt handler ++ this interrupt is called from DMA2(ser2), DMA4(ser3), DMA6(ser0) or ++ DMA8(ser1) when they have finished a descriptor with the intr flag set. ++*/ ++ ++static irqreturn_t ++tr_interrupt(int irq, void *dev_id) ++{ ++ struct e100_serial *info; ++ unsigned long ireg; ++ int i; ++ int handled = 0; ++ ++#ifdef CONFIG_SVINTO_SIM ++ /* No receive in the simulator. Will probably be when the rest of ++ * the serial interface works, and this piece will just be removed. ++ */ ++ { ++ const char *s = "What? tr_interrupt in simulator??\n"; ++ SIMCOUT(s,strlen(s)); ++ } ++ return IRQ_HANDLED; ++#endif ++ ++ /* find out the line that caused this irq and get it from rs_table */ ++ ++ ireg = *R_IRQ_MASK2_RD; /* get the active irq bits for the dma channels */ ++ ++ for (i = 0; i < NR_PORTS; i++) { ++ info = rs_table + i; ++ if (!info->enabled || !info->uses_dma_out) ++ continue; ++ /* check for dma_descr (don't need to check for dma_eop in output dma for serial */ ++ if (ireg & info->irq) { ++ handled = 1; ++ /* we can send a new dma bunch. make it so. */ ++ DINTR2(DEBUG_LOG(info->line, "tr_interrupt %i\n", i)); ++ /* Read jiffies_usec first, ++ * we want this time to be as late as possible ++ */ ++ PROCSTAT(ser_stat[info->line].tx_dma_ints++); ++ info->last_tx_active_usec = GET_JIFFIES_USEC(); ++ info->last_tx_active = jiffies; ++ transmit_chars_dma(info); ++ } ++ ++ /* FIXME: here we should really check for a change in the ++ status lines and if so call status_handle(info) */ ++ } ++ return IRQ_RETVAL(handled); ++} /* tr_interrupt */ ++ ++/* dma input channel interrupt handler */ ++ ++static irqreturn_t ++rec_interrupt(int irq, void *dev_id) ++{ ++ struct e100_serial *info; ++ unsigned long ireg; ++ int i; ++ int handled = 0; ++ ++#ifdef CONFIG_SVINTO_SIM ++ /* No receive in the simulator. Will probably be when the rest of ++ * the serial interface works, and this piece will just be removed. ++ */ ++ { ++ const char *s = "What? rec_interrupt in simulator??\n"; ++ SIMCOUT(s,strlen(s)); ++ } ++ return IRQ_HANDLED; ++#endif ++ ++ /* find out the line that caused this irq and get it from rs_table */ ++ ++ ireg = *R_IRQ_MASK2_RD; /* get the active irq bits for the dma channels */ ++ ++ for (i = 0; i < NR_PORTS; i++) { ++ info = rs_table + i; ++ if (!info->enabled || !info->uses_dma_in) ++ continue; ++ /* check for both dma_eop and dma_descr for the input dma channel */ ++ if (ireg & ((info->irq << 2) | (info->irq << 3))) { ++ handled = 1; ++ /* we have received something */ ++ receive_chars_dma(info); ++ } ++ ++ /* FIXME: here we should really check for a change in the ++ status lines and if so call status_handle(info) */ ++ } ++ return IRQ_RETVAL(handled); ++} /* rec_interrupt */ ++ ++static int force_eop_if_needed(struct e100_serial *info) ++{ ++ /* We check data_avail bit to determine if data has ++ * arrived since last time ++ */ ++ unsigned char rstat = info->ioport[REG_STATUS]; ++ ++ /* error or datavail? */ ++ if (rstat & SER_ERROR_MASK) { ++ /* Some error has occurred. If there has been valid data, an ++ * EOP interrupt will be made automatically. If no data, the ++ * normal ser_interrupt should be enabled and handle it. ++ * So do nothing! ++ */ ++ DEBUG_LOG(info->line, "timeout err: rstat 0x%03X\n", ++ rstat | (info->line << 8)); ++ return 0; ++ } ++ ++ if (rstat & SER_DATA_AVAIL_MASK) { ++ /* Ok data, no error, count it */ ++ TIMERD(DEBUG_LOG(info->line, "timeout: rstat 0x%03X\n", ++ rstat | (info->line << 8))); ++ /* Read data to clear status flags */ ++ (void)info->ioport[REG_DATA]; ++ ++ info->forced_eop = 0; ++ START_FLUSH_FAST_TIMER(info, "magic"); ++ return 0; ++ } ++ ++ /* hit the timeout, force an EOP for the input ++ * dma channel if we haven't already ++ */ ++ if (!info->forced_eop) { ++ info->forced_eop = 1; ++ PROCSTAT(ser_stat[info->line].timeout_flush_cnt++); ++ TIMERD(DEBUG_LOG(info->line, "timeout EOP %i\n", info->line)); ++ FORCE_EOP(info); ++ } ++ ++ return 1; ++} ++ ++static void flush_to_flip_buffer(struct e100_serial *info) ++{ ++ struct tty_struct *tty; ++ struct etrax_recv_buffer *buffer; ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ tty = info->port.tty; ++ ++ if (!tty) { ++ local_irq_restore(flags); ++ return; ++ } ++ ++ while ((buffer = info->first_recv_buffer) != NULL) { ++ unsigned int count = buffer->length; ++ ++ tty_insert_flip_string(tty, buffer->buffer, count); ++ info->recv_cnt -= count; ++ ++ if (count == buffer->length) { ++ info->first_recv_buffer = buffer->next; ++ kfree(buffer); ++ } else { ++ buffer->length -= count; ++ memmove(buffer->buffer, buffer->buffer + count, buffer->length); ++ buffer->error = TTY_NORMAL; ++ } ++ } ++ ++ if (!info->first_recv_buffer) ++ info->last_recv_buffer = NULL; ++ ++ local_irq_restore(flags); ++ ++ /* This includes a check for low-latency */ ++ tty_flip_buffer_push(tty); ++} ++ ++static void check_flush_timeout(struct e100_serial *info) ++{ ++ /* Flip what we've got (if we can) */ ++ flush_to_flip_buffer(info); ++ ++ /* We might need to flip later, but not to fast ++ * since the system is busy processing input... */ ++ if (info->first_recv_buffer) ++ START_FLUSH_FAST_TIMER_TIME(info, "flip", 2000); ++ ++ /* Force eop last, since data might have come while we're processing ++ * and if we started the slow timer above, we won't start a fast ++ * below. ++ */ ++ force_eop_if_needed(info); ++} ++ ++#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER ++static void flush_timeout_function(unsigned long data) ++{ ++ struct e100_serial *info = (struct e100_serial *)data; ++ ++ fast_timers[info->line].function = NULL; ++ serial_fast_timer_expired++; ++ TIMERD(DEBUG_LOG(info->line, "flush_timout %i ", info->line)); ++ TIMERD(DEBUG_LOG(info->line, "num expired: %i\n", serial_fast_timer_expired)); ++ check_flush_timeout(info); ++} ++ ++#else ++ ++/* dma fifo/buffer timeout handler ++ forces an end-of-packet for the dma input channel if no chars ++ have been received for CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS/100 s. ++*/ ++ ++static struct timer_list flush_timer; ++ ++static void ++timed_flush_handler(unsigned long ptr) ++{ ++ struct e100_serial *info; ++ int i; ++ ++#ifdef CONFIG_SVINTO_SIM ++ return; ++#endif ++ ++ for (i = 0; i < NR_PORTS; i++) { ++ info = rs_table + i; ++ if (info->uses_dma_in) ++ check_flush_timeout(info); ++ } ++ ++ /* restart flush timer */ ++ mod_timer(&flush_timer, jiffies + CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS); ++} ++#endif ++ ++#ifdef SERIAL_HANDLE_EARLY_ERRORS ++ ++/* If there is an error (ie break) when the DMA is running and ++ * there are no bytes in the fifo the DMA is stopped and we get no ++ * eop interrupt. Thus we have to monitor the first bytes on a DMA ++ * transfer, and if it is without error we can turn the serial ++ * interrupts off. ++ */ ++ ++/* ++BREAK handling on ETRAX 100: ++ETRAX will generate interrupt although there is no stop bit between the ++characters. ++ ++Depending on how long the break sequence is, the end of the breaksequence ++will look differently: ++| indicates start/end of a character. ++ ++B= Break character (0x00) with framing error. ++E= Error byte with parity error received after B characters. ++F= "Faked" valid byte received immediately after B characters. ++V= Valid byte ++ ++1. ++ B BL ___________________________ V ++.._|__________|__________| |valid data | ++ ++Multiple frame errors with data == 0x00 (B), ++the timing matches up "perfectly" so no extra ending char is detected. ++The RXD pin is 1 in the last interrupt, in that case ++we set info->errorcode = ERRCODE_INSERT_BREAK, but we can't really ++know if another byte will come and this really is case 2. below ++(e.g F=0xFF or 0xFE) ++If RXD pin is 0 we can expect another character (see 2. below). ++ ++ ++2. ++ ++ B B E or F__________________..__ V ++.._|__________|__________|______ | |valid data ++ "valid" or ++ parity error ++ ++Multiple frame errors with data == 0x00 (B), ++but the part of the break trigs is interpreted as a start bit (and possibly ++some 0 bits followed by a number of 1 bits and a stop bit). ++Depending on parity settings etc. this last character can be either ++a fake "valid" char (F) or have a parity error (E). ++ ++If the character is valid it will be put in the buffer, ++we set info->errorcode = ERRCODE_SET_BREAK so the receive interrupt ++will set the flags so the tty will handle it, ++if it's an error byte it will not be put in the buffer ++and we set info->errorcode = ERRCODE_INSERT_BREAK. ++ ++To distinguish a V byte in 1. from an F byte in 2. we keep a timestamp ++of the last faulty char (B) and compares it with the current time: ++If the time elapsed time is less then 2*char_time_usec we will assume ++it's a faked F char and not a Valid char and set ++info->errorcode = ERRCODE_SET_BREAK. ++ ++Flaws in the above solution: ++~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ++We use the timer to distinguish a F character from a V character, ++if a V character is to close after the break we might make the wrong decision. ++ ++TODO: The break will be delayed until an F or V character is received. ++ ++*/ ++ ++static ++struct e100_serial * handle_ser_rx_interrupt_no_dma(struct e100_serial *info) ++{ ++ unsigned long data_read; ++ struct tty_struct *tty = info->port.tty; ++ ++ if (!tty) { ++ printk("!NO TTY!\n"); ++ return info; ++ } ++ ++ /* Read data and status at the same time */ ++ data_read = *((unsigned long *)&info->ioport[REG_DATA_STATUS32]); ++more_data: ++ if (data_read & IO_MASK(R_SERIAL0_READ, xoff_detect) ) { ++ DFLOW(DEBUG_LOG(info->line, "XOFF detect\n", 0)); ++ } ++ DINTR2(DEBUG_LOG(info->line, "ser_rx %c\n", IO_EXTRACT(R_SERIAL0_READ, data_in, data_read))); ++ ++ if (data_read & ( IO_MASK(R_SERIAL0_READ, framing_err) | ++ IO_MASK(R_SERIAL0_READ, par_err) | ++ IO_MASK(R_SERIAL0_READ, overrun) )) { ++ /* An error */ ++ info->last_rx_active_usec = GET_JIFFIES_USEC(); ++ info->last_rx_active = jiffies; ++ DINTR1(DEBUG_LOG(info->line, "ser_rx err stat_data %04X\n", data_read)); ++ DLOG_INT_TRIG( ++ if (!log_int_trig1_pos) { ++ log_int_trig1_pos = log_int_pos; ++ log_int(rdpc(), 0, 0); ++ } ++ ); ++ ++ ++ if ( ((data_read & IO_MASK(R_SERIAL0_READ, data_in)) == 0) && ++ (data_read & IO_MASK(R_SERIAL0_READ, framing_err)) ) { ++ /* Most likely a break, but we get interrupts over and ++ * over again. ++ */ ++ ++ if (!info->break_detected_cnt) { ++ DEBUG_LOG(info->line, "#BRK start\n", 0); ++ } ++ if (data_read & IO_MASK(R_SERIAL0_READ, rxd)) { ++ /* The RX pin is high now, so the break ++ * must be over, but.... ++ * we can't really know if we will get another ++ * last byte ending the break or not. ++ * And we don't know if the byte (if any) will ++ * have an error or look valid. ++ */ ++ DEBUG_LOG(info->line, "# BL BRK\n", 0); ++ info->errorcode = ERRCODE_INSERT_BREAK; ++ } ++ info->break_detected_cnt++; ++ } else { ++ /* The error does not look like a break, but could be ++ * the end of one ++ */ ++ if (info->break_detected_cnt) { ++ DEBUG_LOG(info->line, "EBRK %i\n", info->break_detected_cnt); ++ info->errorcode = ERRCODE_INSERT_BREAK; ++ } else { ++ unsigned char data = IO_EXTRACT(R_SERIAL0_READ, ++ data_in, data_read); ++ char flag = TTY_NORMAL; ++ if (info->errorcode == ERRCODE_INSERT_BREAK) { ++ struct tty_struct *tty = info->port.tty; ++ tty_insert_flip_char(tty, 0, flag); ++ info->icount.rx++; ++ } ++ ++ if (data_read & IO_MASK(R_SERIAL0_READ, par_err)) { ++ info->icount.parity++; ++ flag = TTY_PARITY; ++ } else if (data_read & IO_MASK(R_SERIAL0_READ, overrun)) { ++ info->icount.overrun++; ++ flag = TTY_OVERRUN; ++ } else if (data_read & IO_MASK(R_SERIAL0_READ, framing_err)) { ++ info->icount.frame++; ++ flag = TTY_FRAME; ++ } ++ tty_insert_flip_char(tty, data, flag); ++ info->errorcode = 0; ++ } ++ info->break_detected_cnt = 0; ++ } ++ } else if (data_read & IO_MASK(R_SERIAL0_READ, data_avail)) { ++ /* No error */ ++ DLOG_INT_TRIG( ++ if (!log_int_trig1_pos) { ++ if (log_int_pos >= log_int_size) { ++ log_int_pos = 0; ++ } ++ log_int_trig0_pos = log_int_pos; ++ log_int(rdpc(), 0, 0); ++ } ++ ); ++ tty_insert_flip_char(tty, ++ IO_EXTRACT(R_SERIAL0_READ, data_in, data_read), ++ TTY_NORMAL); ++ } else { ++ DEBUG_LOG(info->line, "ser_rx int but no data_avail %08lX\n", data_read); ++ } ++ ++ ++ info->icount.rx++; ++ data_read = *((unsigned long *)&info->ioport[REG_DATA_STATUS32]); ++ if (data_read & IO_MASK(R_SERIAL0_READ, data_avail)) { ++ DEBUG_LOG(info->line, "ser_rx %c in loop\n", IO_EXTRACT(R_SERIAL0_READ, data_in, data_read)); ++ goto more_data; ++ } ++ ++ tty_flip_buffer_push(info->port.tty); ++ return info; ++} ++ ++static struct e100_serial* handle_ser_rx_interrupt(struct e100_serial *info) ++{ ++ unsigned char rstat; ++ ++#ifdef SERIAL_DEBUG_INTR ++ printk("Interrupt from serport %d\n", i); ++#endif ++/* DEBUG_LOG(info->line, "ser_interrupt stat %03X\n", rstat | (i << 8)); */ ++ if (!info->uses_dma_in) { ++ return handle_ser_rx_interrupt_no_dma(info); ++ } ++ /* DMA is used */ ++ rstat = info->ioport[REG_STATUS]; ++ if (rstat & IO_MASK(R_SERIAL0_STATUS, xoff_detect) ) { ++ DFLOW(DEBUG_LOG(info->line, "XOFF detect\n", 0)); ++ } ++ ++ if (rstat & SER_ERROR_MASK) { ++ unsigned char data; ++ ++ info->last_rx_active_usec = GET_JIFFIES_USEC(); ++ info->last_rx_active = jiffies; ++ /* If we got an error, we must reset it by reading the ++ * data_in field ++ */ ++ data = info->ioport[REG_DATA]; ++ DINTR1(DEBUG_LOG(info->line, "ser_rx! %c\n", data)); ++ DINTR1(DEBUG_LOG(info->line, "ser_rx err stat %02X\n", rstat)); ++ if (!data && (rstat & SER_FRAMING_ERR_MASK)) { ++ /* Most likely a break, but we get interrupts over and ++ * over again. ++ */ ++ ++ if (!info->break_detected_cnt) { ++ DEBUG_LOG(info->line, "#BRK start\n", 0); ++ } ++ if (rstat & SER_RXD_MASK) { ++ /* The RX pin is high now, so the break ++ * must be over, but.... ++ * we can't really know if we will get another ++ * last byte ending the break or not. ++ * And we don't know if the byte (if any) will ++ * have an error or look valid. ++ */ ++ DEBUG_LOG(info->line, "# BL BRK\n", 0); ++ info->errorcode = ERRCODE_INSERT_BREAK; ++ } ++ info->break_detected_cnt++; ++ } else { ++ /* The error does not look like a break, but could be ++ * the end of one ++ */ ++ if (info->break_detected_cnt) { ++ DEBUG_LOG(info->line, "EBRK %i\n", info->break_detected_cnt); ++ info->errorcode = ERRCODE_INSERT_BREAK; ++ } else { ++ if (info->errorcode == ERRCODE_INSERT_BREAK) { ++ info->icount.brk++; ++ add_char_and_flag(info, '\0', TTY_BREAK); ++ } ++ ++ if (rstat & SER_PAR_ERR_MASK) { ++ info->icount.parity++; ++ add_char_and_flag(info, data, TTY_PARITY); ++ } else if (rstat & SER_OVERRUN_MASK) { ++ info->icount.overrun++; ++ add_char_and_flag(info, data, TTY_OVERRUN); ++ } else if (rstat & SER_FRAMING_ERR_MASK) { ++ info->icount.frame++; ++ add_char_and_flag(info, data, TTY_FRAME); ++ } ++ ++ info->errorcode = 0; ++ } ++ info->break_detected_cnt = 0; ++ DEBUG_LOG(info->line, "#iERR s d %04X\n", ++ ((rstat & SER_ERROR_MASK) << 8) | data); ++ } ++ PROCSTAT(ser_stat[info->line].early_errors_cnt++); ++ } else { /* It was a valid byte, now let the DMA do the rest */ ++ unsigned long curr_time_u = GET_JIFFIES_USEC(); ++ unsigned long curr_time = jiffies; ++ ++ if (info->break_detected_cnt) { ++ /* Detect if this character is a new valid char or the ++ * last char in a break sequence: If LSBits are 0 and ++ * MSBits are high AND the time is close to the ++ * previous interrupt we should discard it. ++ */ ++ long elapsed_usec = ++ (curr_time - info->last_rx_active) * (1000000/HZ) + ++ curr_time_u - info->last_rx_active_usec; ++ if (elapsed_usec < 2*info->char_time_usec) { ++ DEBUG_LOG(info->line, "FBRK %i\n", info->line); ++ /* Report as BREAK (error) and let ++ * receive_chars_dma() handle it ++ */ ++ info->errorcode = ERRCODE_SET_BREAK; ++ } else { ++ DEBUG_LOG(info->line, "Not end of BRK (V)%i\n", info->line); ++ } ++ DEBUG_LOG(info->line, "num brk %i\n", info->break_detected_cnt); ++ } ++ ++#ifdef SERIAL_DEBUG_INTR ++ printk("** OK, disabling ser_interrupts\n"); ++#endif ++ e100_disable_serial_data_irq(info); ++ DINTR2(DEBUG_LOG(info->line, "ser_rx OK %d\n", info->line)); ++ info->break_detected_cnt = 0; ++ ++ PROCSTAT(ser_stat[info->line].ser_ints_ok_cnt++); ++ } ++ /* Restarting the DMA never hurts */ ++ *info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, restart); ++ START_FLUSH_FAST_TIMER(info, "ser_int"); ++ return info; ++} /* handle_ser_rx_interrupt */ ++ ++static void handle_ser_tx_interrupt(struct e100_serial *info) ++{ ++ unsigned long flags; ++ ++ if (info->x_char) { ++ unsigned char rstat; ++ DFLOW(DEBUG_LOG(info->line, "tx_int: xchar 0x%02X\n", info->x_char)); ++ local_irq_save(flags); ++ rstat = info->ioport[REG_STATUS]; ++ DFLOW(DEBUG_LOG(info->line, "stat %x\n", rstat)); ++ ++ info->ioport[REG_TR_DATA] = info->x_char; ++ info->icount.tx++; ++ info->x_char = 0; ++ /* We must enable since it is disabled in ser_interrupt */ ++ e100_enable_serial_tx_ready_irq(info); ++ local_irq_restore(flags); ++ return; ++ } ++ if (info->uses_dma_out) { ++ unsigned char rstat; ++ int i; ++ /* We only use normal tx interrupt when sending x_char */ ++ DFLOW(DEBUG_LOG(info->line, "tx_int: xchar sent\n", 0)); ++ local_irq_save(flags); ++ rstat = info->ioport[REG_STATUS]; ++ DFLOW(DEBUG_LOG(info->line, "stat %x\n", rstat)); ++ e100_disable_serial_tx_ready_irq(info); ++ if (info->port.tty->stopped) ++ rs_stop(info->port.tty); ++ /* Enable the DMA channel and tell it to continue */ ++ e100_enable_txdma_channel(info); ++ /* Wait 12 cycles before doing the DMA command */ ++ for(i = 6; i > 0; i--) ++ nop(); ++ ++ *info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, continue); ++ local_irq_restore(flags); ++ return; ++ } ++ /* Normal char-by-char interrupt */ ++ if (info->xmit.head == info->xmit.tail ++ || info->port.tty->stopped ++ || info->port.tty->hw_stopped) { ++ DFLOW(DEBUG_LOG(info->line, "tx_int: stopped %i\n", ++ info->port.tty->stopped)); ++ e100_disable_serial_tx_ready_irq(info); ++ info->tr_running = 0; ++ return; ++ } ++ DINTR2(DEBUG_LOG(info->line, "tx_int %c\n", info->xmit.buf[info->xmit.tail])); ++ /* Send a byte, rs485 timing is critical so turn of ints */ ++ local_irq_save(flags); ++ info->ioport[REG_TR_DATA] = info->xmit.buf[info->xmit.tail]; ++ info->xmit.tail = (info->xmit.tail + 1) & (SERIAL_XMIT_SIZE-1); ++ info->icount.tx++; ++ if (info->xmit.head == info->xmit.tail) { ++#if defined(CONFIG_ETRAX_RS485) && defined(CONFIG_ETRAX_FAST_TIMER) ++ if (info->rs485.flags & SER_RS485_ENABLED) { ++ /* Set a short timer to toggle RTS */ ++ start_one_shot_timer(&fast_timers_rs485[info->line], ++ rs485_toggle_rts_timer_function, ++ (unsigned long)info, ++ info->char_time_usec*2, ++ "RS-485"); ++ } ++#endif /* RS485 */ ++ info->last_tx_active_usec = GET_JIFFIES_USEC(); ++ info->last_tx_active = jiffies; ++ e100_disable_serial_tx_ready_irq(info); ++ info->tr_running = 0; ++ DFLOW(DEBUG_LOG(info->line, "tx_int: stop2\n", 0)); ++ } else { ++ /* We must enable since it is disabled in ser_interrupt */ ++ e100_enable_serial_tx_ready_irq(info); ++ } ++ local_irq_restore(flags); ++ ++ if (CIRC_CNT(info->xmit.head, ++ info->xmit.tail, ++ SERIAL_XMIT_SIZE) < WAKEUP_CHARS) ++ rs_sched_event(info, RS_EVENT_WRITE_WAKEUP); ++ ++} /* handle_ser_tx_interrupt */ ++ ++/* result of time measurements: ++ * RX duration 54-60 us when doing something, otherwise 6-9 us ++ * ser_int duration: just sending: 8-15 us normally, up to 73 us ++ */ ++static irqreturn_t ++ser_interrupt(int irq, void *dev_id) ++{ ++ static volatile int tx_started = 0; ++ struct e100_serial *info; ++ int i; ++ unsigned long flags; ++ unsigned long irq_mask1_rd; ++ unsigned long data_mask = (1 << (8+2*0)); /* ser0 data_avail */ ++ int handled = 0; ++ static volatile unsigned long reentered_ready_mask = 0; ++ ++ local_irq_save(flags); ++ irq_mask1_rd = *R_IRQ_MASK1_RD; ++ /* First handle all rx interrupts with ints disabled */ ++ info = rs_table; ++ irq_mask1_rd &= e100_ser_int_mask; ++ for (i = 0; i < NR_PORTS; i++) { ++ /* Which line caused the data irq? */ ++ if (irq_mask1_rd & data_mask) { ++ handled = 1; ++ handle_ser_rx_interrupt(info); ++ } ++ info += 1; ++ data_mask <<= 2; ++ } ++ /* Handle tx interrupts with interrupts enabled so we ++ * can take care of new data interrupts while transmitting ++ * We protect the tx part with the tx_started flag. ++ * We disable the tr_ready interrupts we are about to handle and ++ * unblock the serial interrupt so new serial interrupts may come. ++ * ++ * If we get a new interrupt: ++ * - it migth be due to synchronous serial ports. ++ * - serial irq will be blocked by general irq handler. ++ * - async data will be handled above (sync will be ignored). ++ * - tx_started flag will prevent us from trying to send again and ++ * we will exit fast - no need to unblock serial irq. ++ * - Next (sync) serial interrupt handler will be runned with ++ * disabled interrupt due to restore_flags() at end of function, ++ * so sync handler will not be preempted or reentered. ++ */ ++ if (!tx_started) { ++ unsigned long ready_mask; ++ unsigned long ++ tx_started = 1; ++ /* Only the tr_ready interrupts left */ ++ irq_mask1_rd &= (IO_MASK(R_IRQ_MASK1_RD, ser0_ready) | ++ IO_MASK(R_IRQ_MASK1_RD, ser1_ready) | ++ IO_MASK(R_IRQ_MASK1_RD, ser2_ready) | ++ IO_MASK(R_IRQ_MASK1_RD, ser3_ready)); ++ while (irq_mask1_rd) { ++ /* Disable those we are about to handle */ ++ *R_IRQ_MASK1_CLR = irq_mask1_rd; ++ /* Unblock the serial interrupt */ ++ *R_VECT_MASK_SET = IO_STATE(R_VECT_MASK_SET, serial, set); ++ ++ local_irq_enable(); ++ ready_mask = (1 << (8+1+2*0)); /* ser0 tr_ready */ ++ info = rs_table; ++ for (i = 0; i < NR_PORTS; i++) { ++ /* Which line caused the ready irq? */ ++ if (irq_mask1_rd & ready_mask) { ++ handled = 1; ++ handle_ser_tx_interrupt(info); ++ } ++ info += 1; ++ ready_mask <<= 2; ++ } ++ /* handle_ser_tx_interrupt enables tr_ready interrupts */ ++ local_irq_disable(); ++ /* Handle reentered TX interrupt */ ++ irq_mask1_rd = reentered_ready_mask; ++ } ++ local_irq_disable(); ++ tx_started = 0; ++ } else { ++ unsigned long ready_mask; ++ ready_mask = irq_mask1_rd & (IO_MASK(R_IRQ_MASK1_RD, ser0_ready) | ++ IO_MASK(R_IRQ_MASK1_RD, ser1_ready) | ++ IO_MASK(R_IRQ_MASK1_RD, ser2_ready) | ++ IO_MASK(R_IRQ_MASK1_RD, ser3_ready)); ++ if (ready_mask) { ++ reentered_ready_mask |= ready_mask; ++ /* Disable those we are about to handle */ ++ *R_IRQ_MASK1_CLR = ready_mask; ++ DFLOW(DEBUG_LOG(SERIAL_DEBUG_LINE, "ser_int reentered with TX %X\n", ready_mask)); ++ } ++ } ++ ++ local_irq_restore(flags); ++ return IRQ_RETVAL(handled); ++} /* ser_interrupt */ ++#endif ++ ++/* ++ * ------------------------------------------------------------------- ++ * Here ends the serial interrupt routines. ++ * ------------------------------------------------------------------- ++ */ ++ ++/* ++ * This routine is used to handle the "bottom half" processing for the ++ * serial driver, known also the "software interrupt" processing. ++ * This processing is done at the kernel interrupt level, after the ++ * rs_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This ++ * is where time-consuming activities which can not be done in the ++ * interrupt driver proper are done; the interrupt driver schedules ++ * them using rs_sched_event(), and they get done here. ++ */ ++static void ++do_softint(struct work_struct *work) ++{ ++ struct e100_serial *info; ++ struct tty_struct *tty; ++ ++ info = container_of(work, struct e100_serial, work); ++ ++ tty = info->port.tty; ++ if (!tty) ++ return; ++ ++ if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) ++ tty_wakeup(tty); ++} ++ ++static int ++startup(struct e100_serial * info) ++{ ++ unsigned long flags; ++ unsigned long xmit_page; ++ int i; ++ ++ xmit_page = get_zeroed_page(GFP_KERNEL); ++ if (!xmit_page) ++ return -ENOMEM; ++ ++ local_irq_save(flags); ++ ++ /* if it was already initialized, skip this */ ++ ++ if (info->flags & ASYNC_INITIALIZED) { ++ local_irq_restore(flags); ++ free_page(xmit_page); ++ return 0; ++ } ++ ++ if (info->xmit.buf) ++ free_page(xmit_page); ++ else ++ info->xmit.buf = (unsigned char *) xmit_page; ++ ++#ifdef SERIAL_DEBUG_OPEN ++ printk("starting up ttyS%d (xmit_buf 0x%p)...\n", info->line, info->xmit.buf); ++#endif ++ ++#ifdef CONFIG_SVINTO_SIM ++ /* Bits and pieces collected from below. Better to have them ++ in one ifdef:ed clause than to mix in a lot of ifdefs, ++ right? */ ++ if (info->port.tty) ++ clear_bit(TTY_IO_ERROR, &info->port.tty->flags); ++ ++ info->xmit.head = info->xmit.tail = 0; ++ info->first_recv_buffer = info->last_recv_buffer = NULL; ++ info->recv_cnt = info->max_recv_cnt = 0; ++ ++ for (i = 0; i < SERIAL_RECV_DESCRIPTORS; i++) ++ info->rec_descr[i].buf = NULL; ++ ++ /* No real action in the simulator, but may set info important ++ to ioctl. */ ++ change_speed(info); ++#else ++ ++ /* ++ * Clear the FIFO buffers and disable them ++ * (they will be reenabled in change_speed()) ++ */ ++ ++ /* ++ * Reset the DMA channels and make sure their interrupts are cleared ++ */ ++ ++ if (info->dma_in_enabled) { ++ info->uses_dma_in = 1; ++ e100_enable_rxdma_channel(info); ++ ++ *info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, reset); ++ ++ /* Wait until reset cycle is complete */ ++ while (IO_EXTRACT(R_DMA_CH6_CMD, cmd, *info->icmdadr) == ++ IO_STATE_VALUE(R_DMA_CH6_CMD, cmd, reset)); ++ ++ /* Make sure the irqs are cleared */ ++ *info->iclrintradr = ++ IO_STATE(R_DMA_CH6_CLR_INTR, clr_descr, do) | ++ IO_STATE(R_DMA_CH6_CLR_INTR, clr_eop, do); ++ } else { ++ e100_disable_rxdma_channel(info); ++ } ++ ++ if (info->dma_out_enabled) { ++ info->uses_dma_out = 1; ++ e100_enable_txdma_channel(info); ++ *info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, reset); ++ ++ while (IO_EXTRACT(R_DMA_CH6_CMD, cmd, *info->ocmdadr) == ++ IO_STATE_VALUE(R_DMA_CH6_CMD, cmd, reset)); ++ ++ /* Make sure the irqs are cleared */ ++ *info->oclrintradr = ++ IO_STATE(R_DMA_CH6_CLR_INTR, clr_descr, do) | ++ IO_STATE(R_DMA_CH6_CLR_INTR, clr_eop, do); ++ } else { ++ e100_disable_txdma_channel(info); ++ } ++ ++ if (info->port.tty) ++ clear_bit(TTY_IO_ERROR, &info->port.tty->flags); ++ ++ info->xmit.head = info->xmit.tail = 0; ++ info->first_recv_buffer = info->last_recv_buffer = NULL; ++ info->recv_cnt = info->max_recv_cnt = 0; ++ ++ for (i = 0; i < SERIAL_RECV_DESCRIPTORS; i++) ++ info->rec_descr[i].buf = 0; ++ ++ /* ++ * and set the speed and other flags of the serial port ++ * this will start the rx/tx as well ++ */ ++#ifdef SERIAL_HANDLE_EARLY_ERRORS ++ e100_enable_serial_data_irq(info); ++#endif ++ change_speed(info); ++ ++ /* dummy read to reset any serial errors */ ++ ++ (void)info->ioport[REG_DATA]; ++ ++ /* enable the interrupts */ ++ if (info->uses_dma_out) ++ e100_enable_txdma_irq(info); ++ ++ e100_enable_rx_irq(info); ++ ++ info->tr_running = 0; /* to be sure we don't lock up the transmitter */ ++ ++ /* setup the dma input descriptor and start dma */ ++ ++ start_receive(info); ++ ++ /* for safety, make sure the descriptors last result is 0 bytes written */ ++ ++ info->tr_descr.sw_len = 0; ++ info->tr_descr.hw_len = 0; ++ info->tr_descr.status = 0; ++ ++ /* enable RTS/DTR last */ ++ ++ e100_rts(info, 1); ++ e100_dtr(info, 1); ++ ++#endif /* CONFIG_SVINTO_SIM */ ++ ++ info->flags |= ASYNC_INITIALIZED; ++ ++ local_irq_restore(flags); ++ return 0; ++} ++ ++/* ++ * This routine will shutdown a serial port; interrupts are disabled, and ++ * DTR is dropped if the hangup on close termio flag is on. ++ */ ++static void ++shutdown(struct e100_serial * info) ++{ ++ unsigned long flags; ++ struct etrax_dma_descr *descr = info->rec_descr; ++ struct etrax_recv_buffer *buffer; ++ int i; ++ ++#ifndef CONFIG_SVINTO_SIM ++ /* shut down the transmitter and receiver */ ++ DFLOW(DEBUG_LOG(info->line, "shutdown %i\n", info->line)); ++ e100_disable_rx(info); ++ info->ioport[REG_TR_CTRL] = (info->tx_ctrl &= ~0x40); ++ ++ /* disable interrupts, reset dma channels */ ++ if (info->uses_dma_in) { ++ e100_disable_rxdma_irq(info); ++ *info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, reset); ++ info->uses_dma_in = 0; ++ } else { ++ e100_disable_serial_data_irq(info); ++ } ++ ++ if (info->uses_dma_out) { ++ e100_disable_txdma_irq(info); ++ info->tr_running = 0; ++ *info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, reset); ++ info->uses_dma_out = 0; ++ } else { ++ e100_disable_serial_tx_ready_irq(info); ++ info->tr_running = 0; ++ } ++ ++#endif /* CONFIG_SVINTO_SIM */ ++ ++ if (!(info->flags & ASYNC_INITIALIZED)) ++ return; ++ ++#ifdef SERIAL_DEBUG_OPEN ++ printk("Shutting down serial port %d (irq %d)....\n", info->line, ++ info->irq); ++#endif ++ ++ local_irq_save(flags); ++ ++ if (info->xmit.buf) { ++ free_page((unsigned long)info->xmit.buf); ++ info->xmit.buf = NULL; ++ } ++ ++ for (i = 0; i < SERIAL_RECV_DESCRIPTORS; i++) ++ if (descr[i].buf) { ++ buffer = phys_to_virt(descr[i].buf) - sizeof *buffer; ++ kfree(buffer); ++ descr[i].buf = 0; ++ } ++ ++ if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) { ++ /* hang up DTR and RTS if HUPCL is enabled */ ++ e100_dtr(info, 0); ++ e100_rts(info, 0); /* could check CRTSCTS before doing this */ ++ } ++ ++ if (info->port.tty) ++ set_bit(TTY_IO_ERROR, &info->port.tty->flags); ++ ++ info->flags &= ~ASYNC_INITIALIZED; ++ local_irq_restore(flags); ++} ++ ++ ++/* change baud rate and other assorted parameters */ ++ ++static void ++change_speed(struct e100_serial *info) ++{ ++ unsigned int cflag; ++ unsigned long xoff; ++ unsigned long flags; ++ /* first some safety checks */ ++ ++ if (!info->port.tty || !info->port.tty->termios) ++ return; ++ if (!info->ioport) ++ return; ++ ++ cflag = info->port.tty->termios->c_cflag; ++ ++ /* possibly, the tx/rx should be disabled first to do this safely */ ++ ++ /* change baud-rate and write it to the hardware */ ++ if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) { ++ /* Special baudrate */ ++ u32 mask = 0xFF << (info->line*8); /* Each port has 8 bits */ ++ unsigned long alt_source = ++ IO_STATE(R_ALT_SER_BAUDRATE, ser0_rec, normal) | ++ IO_STATE(R_ALT_SER_BAUDRATE, ser0_tr, normal); ++ /* R_ALT_SER_BAUDRATE selects the source */ ++ DBAUD(printk("Custom baudrate: baud_base/divisor %lu/%i\n", ++ (unsigned long)info->baud_base, info->custom_divisor)); ++ if (info->baud_base == SERIAL_PRESCALE_BASE) { ++ /* 0, 2-65535 (0=65536) */ ++ u16 divisor = info->custom_divisor; ++ /* R_SERIAL_PRESCALE (upper 16 bits of R_CLOCK_PRESCALE) */ ++ /* baudrate is 3.125MHz/custom_divisor */ ++ alt_source = ++ IO_STATE(R_ALT_SER_BAUDRATE, ser0_rec, prescale) | ++ IO_STATE(R_ALT_SER_BAUDRATE, ser0_tr, prescale); ++ alt_source = 0x11; ++ DBAUD(printk("Writing SERIAL_PRESCALE: divisor %i\n", divisor)); ++ *R_SERIAL_PRESCALE = divisor; ++ info->baud = SERIAL_PRESCALE_BASE/divisor; ++ } ++#ifdef CONFIG_ETRAX_EXTERN_PB6CLK_ENABLED ++ else if ((info->baud_base==CONFIG_ETRAX_EXTERN_PB6CLK_FREQ/8 && ++ info->custom_divisor == 1) || ++ (info->baud_base==CONFIG_ETRAX_EXTERN_PB6CLK_FREQ && ++ info->custom_divisor == 8)) { ++ /* ext_clk selected */ ++ alt_source = ++ IO_STATE(R_ALT_SER_BAUDRATE, ser0_rec, extern) | ++ IO_STATE(R_ALT_SER_BAUDRATE, ser0_tr, extern); ++ DBAUD(printk("using external baudrate: %lu\n", CONFIG_ETRAX_EXTERN_PB6CLK_FREQ/8)); ++ info->baud = CONFIG_ETRAX_EXTERN_PB6CLK_FREQ/8; ++ } ++#endif ++ else ++ { ++ /* Bad baudbase, we don't support using timer0 ++ * for baudrate. ++ */ ++ printk(KERN_WARNING "Bad baud_base/custom_divisor: %lu/%i\n", ++ (unsigned long)info->baud_base, info->custom_divisor); ++ } ++ r_alt_ser_baudrate_shadow &= ~mask; ++ r_alt_ser_baudrate_shadow |= (alt_source << (info->line*8)); ++ *R_ALT_SER_BAUDRATE = r_alt_ser_baudrate_shadow; ++ } else { ++ /* Normal baudrate */ ++ /* Make sure we use normal baudrate */ ++ u32 mask = 0xFF << (info->line*8); /* Each port has 8 bits */ ++ unsigned long alt_source = ++ IO_STATE(R_ALT_SER_BAUDRATE, ser0_rec, normal) | ++ IO_STATE(R_ALT_SER_BAUDRATE, ser0_tr, normal); ++ r_alt_ser_baudrate_shadow &= ~mask; ++ r_alt_ser_baudrate_shadow |= (alt_source << (info->line*8)); ++#ifndef CONFIG_SVINTO_SIM ++ *R_ALT_SER_BAUDRATE = r_alt_ser_baudrate_shadow; ++#endif /* CONFIG_SVINTO_SIM */ ++ ++ info->baud = cflag_to_baud(cflag); ++#ifndef CONFIG_SVINTO_SIM ++ info->ioport[REG_BAUD] = cflag_to_etrax_baud(cflag); ++#endif /* CONFIG_SVINTO_SIM */ ++ } ++ ++#ifndef CONFIG_SVINTO_SIM ++ /* start with default settings and then fill in changes */ ++ local_irq_save(flags); ++ /* 8 bit, no/even parity */ ++ info->rx_ctrl &= ~(IO_MASK(R_SERIAL0_REC_CTRL, rec_bitnr) | ++ IO_MASK(R_SERIAL0_REC_CTRL, rec_par_en) | ++ IO_MASK(R_SERIAL0_REC_CTRL, rec_par)); ++ ++ /* 8 bit, no/even parity, 1 stop bit, no cts */ ++ info->tx_ctrl &= ~(IO_MASK(R_SERIAL0_TR_CTRL, tr_bitnr) | ++ IO_MASK(R_SERIAL0_TR_CTRL, tr_par_en) | ++ IO_MASK(R_SERIAL0_TR_CTRL, tr_par) | ++ IO_MASK(R_SERIAL0_TR_CTRL, stop_bits) | ++ IO_MASK(R_SERIAL0_TR_CTRL, auto_cts)); ++ ++ if ((cflag & CSIZE) == CS7) { ++ /* set 7 bit mode */ ++ info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_7bit); ++ info->rx_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_7bit); ++ } ++ ++ if (cflag & CSTOPB) { ++ /* set 2 stop bit mode */ ++ info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, stop_bits, two_bits); ++ } ++ ++ if (cflag & PARENB) { ++ /* enable parity */ ++ info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable); ++ info->rx_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable); ++ } ++ ++ if (cflag & CMSPAR) { ++ /* enable stick parity, PARODD mean Mark which matches ETRAX */ ++ info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_stick_par, stick); ++ info->rx_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_stick_par, stick); ++ } ++ if (cflag & PARODD) { ++ /* set odd parity (or Mark if CMSPAR) */ ++ info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_par, odd); ++ info->rx_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_par, odd); ++ } ++ ++ if (cflag & CRTSCTS) { ++ /* enable automatic CTS handling */ ++ DFLOW(DEBUG_LOG(info->line, "FLOW auto_cts enabled\n", 0)); ++ info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, auto_cts, active); ++ } ++ ++ /* make sure the tx and rx are enabled */ ++ ++ info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_enable, enable); ++ info->rx_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable); ++ ++ /* actually write the control regs to the hardware */ ++ ++ info->ioport[REG_TR_CTRL] = info->tx_ctrl; ++ info->ioport[REG_REC_CTRL] = info->rx_ctrl; ++ xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, STOP_CHAR(info->port.tty)); ++ xoff |= IO_STATE(R_SERIAL0_XOFF, tx_stop, enable); ++ if (info->port.tty->termios->c_iflag & IXON ) { ++ DFLOW(DEBUG_LOG(info->line, "FLOW XOFF enabled 0x%02X\n", ++ STOP_CHAR(info->port.tty))); ++ xoff |= IO_STATE(R_SERIAL0_XOFF, auto_xoff, enable); ++ } ++ ++ *((unsigned long *)&info->ioport[REG_XOFF]) = xoff; ++ local_irq_restore(flags); ++#endif /* !CONFIG_SVINTO_SIM */ ++ ++ update_char_time(info); ++ ++} /* change_speed */ ++ ++/* start transmitting chars NOW */ ++ ++static void ++rs_flush_chars(struct tty_struct *tty) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ unsigned long flags; ++ ++ if (info->tr_running || ++ info->xmit.head == info->xmit.tail || ++ tty->stopped || ++ tty->hw_stopped || ++ !info->xmit.buf) ++ return; ++ ++#ifdef SERIAL_DEBUG_FLOW ++ printk("rs_flush_chars\n"); ++#endif ++ ++ /* this protection might not exactly be necessary here */ ++ ++ local_irq_save(flags); ++ start_transmit(info); ++ local_irq_restore(flags); ++} ++ ++static int rs_raw_write(struct tty_struct *tty, ++ const unsigned char *buf, int count) ++{ ++ int c, ret = 0; ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ unsigned long flags; ++ ++ /* first some sanity checks */ ++ ++ if (!tty || !info->xmit.buf || !tmp_buf) ++ return 0; ++ ++#ifdef SERIAL_DEBUG_DATA ++ if (info->line == SERIAL_DEBUG_LINE) ++ printk("rs_raw_write (%d), status %d\n", ++ count, info->ioport[REG_STATUS]); ++#endif ++ ++#ifdef CONFIG_SVINTO_SIM ++ /* Really simple. The output is here and now. */ ++ SIMCOUT(buf, count); ++ return count; ++#endif ++ local_save_flags(flags); ++ DFLOW(DEBUG_LOG(info->line, "write count %i ", count)); ++ DFLOW(DEBUG_LOG(info->line, "ldisc %i\n", tty->ldisc.chars_in_buffer(tty))); ++ ++ ++ /* The local_irq_disable/restore_flags pairs below are needed ++ * because the DMA interrupt handler moves the info->xmit values. ++ * the memcpy needs to be in the critical region unfortunately, ++ * because we need to read xmit values, memcpy, write xmit values ++ * in one atomic operation... this could perhaps be avoided by ++ * more clever design. ++ */ ++ local_irq_disable(); ++ while (count) { ++ c = CIRC_SPACE_TO_END(info->xmit.head, ++ info->xmit.tail, ++ SERIAL_XMIT_SIZE); ++ ++ if (count < c) ++ c = count; ++ if (c <= 0) ++ break; ++ ++ memcpy(info->xmit.buf + info->xmit.head, buf, c); ++ info->xmit.head = (info->xmit.head + c) & ++ (SERIAL_XMIT_SIZE-1); ++ buf += c; ++ count -= c; ++ ret += c; ++ } ++ local_irq_restore(flags); ++ ++ /* enable transmitter if not running, unless the tty is stopped ++ * this does not need IRQ protection since if tr_running == 0 ++ * the IRQ's are not running anyway for this port. ++ */ ++ DFLOW(DEBUG_LOG(info->line, "write ret %i\n", ret)); ++ ++ if (info->xmit.head != info->xmit.tail && ++ !tty->stopped && ++ !tty->hw_stopped && ++ !info->tr_running) { ++ start_transmit(info); ++ } ++ ++ return ret; ++} /* raw_raw_write() */ ++ ++static int ++rs_write(struct tty_struct *tty, ++ const unsigned char *buf, int count) ++{ ++#if defined(CONFIG_ETRAX_RS485) ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ ++ if (info->rs485.flags & SER_RS485_ENABLED) ++ { ++ /* If we are in RS-485 mode, we need to toggle RTS and disable ++ * the receiver before initiating a DMA transfer ++ */ ++#ifdef CONFIG_ETRAX_FAST_TIMER ++ /* Abort any started timer */ ++ fast_timers_rs485[info->line].function = NULL; ++ del_fast_timer(&fast_timers_rs485[info->line]); ++#endif ++ e100_rts(info, (info->rs485.flags & SER_RS485_RTS_ON_SEND)); ++#if defined(CONFIG_ETRAX_RS485_DISABLE_RECEIVER) ++ e100_disable_rx(info); ++ e100_enable_rx_irq(info); ++#endif ++ ++ if (info->rs485.delay_rts_before_send > 0) ++ msleep(info->rs485.delay_rts_before_send); ++ } ++#endif /* CONFIG_ETRAX_RS485 */ ++ ++ count = rs_raw_write(tty, buf, count); ++ ++#if defined(CONFIG_ETRAX_RS485) ++ if (info->rs485.flags & SER_RS485_ENABLED) ++ { ++ unsigned int val; ++ /* If we are in RS-485 mode the following has to be done: ++ * wait until DMA is ready ++ * wait on transmit shift register ++ * toggle RTS ++ * enable the receiver ++ */ ++ ++ /* Sleep until all sent */ ++ tty_wait_until_sent(tty, 0); ++#ifdef CONFIG_ETRAX_FAST_TIMER ++ /* Now sleep a little more so that shift register is empty */ ++ schedule_usleep(info->char_time_usec * 2); ++#endif ++ /* wait on transmit shift register */ ++ do{ ++ get_lsr_info(info, &val); ++ }while (!(val & TIOCSER_TEMT)); ++ ++ e100_rts(info, (info->rs485.flags & SER_RS485_RTS_AFTER_SEND)); ++ ++#if defined(CONFIG_ETRAX_RS485_DISABLE_RECEIVER) ++ e100_enable_rx(info); ++ e100_enable_rxdma_irq(info); ++#endif ++ } ++#endif /* CONFIG_ETRAX_RS485 */ ++ ++ return count; ++} /* rs_write */ ++ ++ ++/* how much space is available in the xmit buffer? */ ++ ++static int ++rs_write_room(struct tty_struct *tty) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ ++ return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE); ++} ++ ++/* How many chars are in the xmit buffer? ++ * This does not include any chars in the transmitter FIFO. ++ * Use wait_until_sent for waiting for FIFO drain. ++ */ ++ ++static int ++rs_chars_in_buffer(struct tty_struct *tty) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ ++ return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE); ++} ++ ++/* discard everything in the xmit buffer */ ++ ++static void ++rs_flush_buffer(struct tty_struct *tty) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ info->xmit.head = info->xmit.tail = 0; ++ local_irq_restore(flags); ++ ++ tty_wakeup(tty); ++} ++ ++/* ++ * This function is used to send a high-priority XON/XOFF character to ++ * the device ++ * ++ * Since we use DMA we don't check for info->x_char in transmit_chars_dma(), ++ * but we do it in handle_ser_tx_interrupt(). ++ * We disable DMA channel and enable tx ready interrupt and write the ++ * character when possible. ++ */ ++static void rs_send_xchar(struct tty_struct *tty, char ch) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ unsigned long flags; ++ local_irq_save(flags); ++ if (info->uses_dma_out) { ++ /* Put the DMA on hold and disable the channel */ ++ *info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, hold); ++ while (IO_EXTRACT(R_DMA_CH6_CMD, cmd, *info->ocmdadr) != ++ IO_STATE_VALUE(R_DMA_CH6_CMD, cmd, hold)); ++ e100_disable_txdma_channel(info); ++ } ++ ++ /* Must make sure transmitter is not stopped before we can transmit */ ++ if (tty->stopped) ++ rs_start(tty); ++ ++ /* Enable manual transmit interrupt and send from there */ ++ DFLOW(DEBUG_LOG(info->line, "rs_send_xchar 0x%02X\n", ch)); ++ info->x_char = ch; ++ e100_enable_serial_tx_ready_irq(info); ++ local_irq_restore(flags); ++} ++ ++/* ++ * ------------------------------------------------------------ ++ * rs_throttle() ++ * ++ * This routine is called by the upper-layer tty layer to signal that ++ * incoming characters should be throttled. ++ * ------------------------------------------------------------ ++ */ ++static void ++rs_throttle(struct tty_struct * tty) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++#ifdef SERIAL_DEBUG_THROTTLE ++ char buf[64]; ++ ++ printk("throttle %s: %lu....\n", tty_name(tty, buf), ++ (unsigned long)tty->ldisc.chars_in_buffer(tty)); ++#endif ++ DFLOW(DEBUG_LOG(info->line,"rs_throttle %lu\n", tty->ldisc.chars_in_buffer(tty))); ++ ++ /* Do RTS before XOFF since XOFF might take some time */ ++ if (tty->termios->c_cflag & CRTSCTS) { ++ /* Turn off RTS line */ ++ e100_rts(info, 0); ++ } ++ if (I_IXOFF(tty)) ++ rs_send_xchar(tty, STOP_CHAR(tty)); ++ ++} ++ ++static void ++rs_unthrottle(struct tty_struct * tty) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++#ifdef SERIAL_DEBUG_THROTTLE ++ char buf[64]; ++ ++ printk("unthrottle %s: %lu....\n", tty_name(tty, buf), ++ (unsigned long)tty->ldisc.chars_in_buffer(tty)); ++#endif ++ DFLOW(DEBUG_LOG(info->line,"rs_unthrottle ldisc %d\n", tty->ldisc.chars_in_buffer(tty))); ++ DFLOW(DEBUG_LOG(info->line,"rs_unthrottle flip.count: %i\n", tty->flip.count)); ++ /* Do RTS before XOFF since XOFF might take some time */ ++ if (tty->termios->c_cflag & CRTSCTS) { ++ /* Assert RTS line */ ++ e100_rts(info, 1); ++ } ++ ++ if (I_IXOFF(tty)) { ++ if (info->x_char) ++ info->x_char = 0; ++ else ++ rs_send_xchar(tty, START_CHAR(tty)); ++ } ++ ++} ++ ++/* ++ * ------------------------------------------------------------ ++ * rs_ioctl() and friends ++ * ------------------------------------------------------------ ++ */ ++ ++static int ++get_serial_info(struct e100_serial * info, ++ struct serial_struct * retinfo) ++{ ++ struct serial_struct tmp; ++ ++ /* this is all probably wrong, there are a lot of fields ++ * here that we don't have in e100_serial and maybe we ++ * should set them to something else than 0. ++ */ ++ ++ if (!retinfo) ++ return -EFAULT; ++ memset(&tmp, 0, sizeof(tmp)); ++ tmp.type = info->type; ++ tmp.line = info->line; ++ tmp.port = (int)info->ioport; ++ tmp.irq = info->irq; ++ tmp.flags = info->flags; ++ tmp.baud_base = info->baud_base; ++ tmp.close_delay = info->close_delay; ++ tmp.closing_wait = info->closing_wait; ++ tmp.custom_divisor = info->custom_divisor; ++ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) ++ return -EFAULT; ++ return 0; ++} ++ ++static int ++set_serial_info(struct e100_serial *info, ++ struct serial_struct *new_info) ++{ ++ struct serial_struct new_serial; ++ struct e100_serial old_info; ++ int retval = 0; ++ ++ if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) ++ return -EFAULT; ++ ++ old_info = *info; ++ ++ if (!capable(CAP_SYS_ADMIN)) { ++ if ((new_serial.type != info->type) || ++ (new_serial.close_delay != info->close_delay) || ++ ((new_serial.flags & ~ASYNC_USR_MASK) != ++ (info->flags & ~ASYNC_USR_MASK))) ++ return -EPERM; ++ info->flags = ((info->flags & ~ASYNC_USR_MASK) | ++ (new_serial.flags & ASYNC_USR_MASK)); ++ goto check_and_exit; ++ } ++ ++ if (info->count > 1) ++ return -EBUSY; ++ ++ /* ++ * OK, past this point, all the error checking has been done. ++ * At this point, we start making changes..... ++ */ ++ ++ info->baud_base = new_serial.baud_base; ++ info->flags = ((info->flags & ~ASYNC_FLAGS) | ++ (new_serial.flags & ASYNC_FLAGS)); ++ info->custom_divisor = new_serial.custom_divisor; ++ info->type = new_serial.type; ++ info->close_delay = new_serial.close_delay; ++ info->closing_wait = new_serial.closing_wait; ++ info->port.tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; ++ ++ check_and_exit: ++ if (info->flags & ASYNC_INITIALIZED) { ++ change_speed(info); ++ } else ++ retval = startup(info); ++ return retval; ++} ++ ++/* ++ * get_lsr_info - get line status register info ++ * ++ * Purpose: Let user call ioctl() to get info when the UART physically ++ * is emptied. On bus types like RS485, the transmitter must ++ * release the bus after transmitting. This must be done when ++ * the transmit shift register is empty, not be done when the ++ * transmit holding register is empty. This functionality ++ * allows an RS485 driver to be written in user space. ++ */ ++static int ++get_lsr_info(struct e100_serial * info, unsigned int *value) ++{ ++ unsigned int result = TIOCSER_TEMT; ++#ifndef CONFIG_SVINTO_SIM ++ unsigned long curr_time = jiffies; ++ unsigned long curr_time_usec = GET_JIFFIES_USEC(); ++ unsigned long elapsed_usec = ++ (curr_time - info->last_tx_active) * 1000000/HZ + ++ curr_time_usec - info->last_tx_active_usec; ++ ++ if (info->xmit.head != info->xmit.tail || ++ elapsed_usec < 2*info->char_time_usec) { ++ result = 0; ++ } ++#endif ++ ++ if (copy_to_user(value, &result, sizeof(int))) ++ return -EFAULT; ++ return 0; ++} ++ ++#ifdef SERIAL_DEBUG_IO ++struct state_str ++{ ++ int state; ++ const char *str; ++}; ++ ++const struct state_str control_state_str[] = { ++ {TIOCM_DTR, "DTR" }, ++ {TIOCM_RTS, "RTS"}, ++ {TIOCM_ST, "ST?" }, ++ {TIOCM_SR, "SR?" }, ++ {TIOCM_CTS, "CTS" }, ++ {TIOCM_CD, "CD" }, ++ {TIOCM_RI, "RI" }, ++ {TIOCM_DSR, "DSR" }, ++ {0, NULL } ++}; ++ ++char *get_control_state_str(int MLines, char *s) ++{ ++ int i = 0; ++ ++ s[0]='\0'; ++ while (control_state_str[i].str != NULL) { ++ if (MLines & control_state_str[i].state) { ++ if (s[0] != '\0') { ++ strcat(s, ", "); ++ } ++ strcat(s, control_state_str[i].str); ++ } ++ i++; ++ } ++ return s; ++} ++#endif ++ ++static int ++rs_break(struct tty_struct *tty, int break_state) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ unsigned long flags; ++ ++ if (!info->ioport) ++ return -EIO; ++ ++ local_irq_save(flags); ++ if (break_state == -1) { ++ /* Go to manual mode and set the txd pin to 0 */ ++ /* Clear bit 7 (txd) and 6 (tr_enable) */ ++ info->tx_ctrl &= 0x3F; ++ } else { ++ /* Set bit 7 (txd) and 6 (tr_enable) */ ++ info->tx_ctrl |= (0x80 | 0x40); ++ } ++ info->ioport[REG_TR_CTRL] = info->tx_ctrl; ++ local_irq_restore(flags); ++ return 0; ++} ++ ++static int ++rs_tiocmset(struct tty_struct *tty, struct file *file, ++ unsigned int set, unsigned int clear) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ ++ if (clear & TIOCM_RTS) ++ e100_rts(info, 0); ++ if (clear & TIOCM_DTR) ++ e100_dtr(info, 0); ++ /* Handle FEMALE behaviour */ ++ if (clear & TIOCM_RI) ++ e100_ri_out(info, 0); ++ if (clear & TIOCM_CD) ++ e100_cd_out(info, 0); ++ ++ if (set & TIOCM_RTS) ++ e100_rts(info, 1); ++ if (set & TIOCM_DTR) ++ e100_dtr(info, 1); ++ /* Handle FEMALE behaviour */ ++ if (set & TIOCM_RI) ++ e100_ri_out(info, 1); ++ if (set & TIOCM_CD) ++ e100_cd_out(info, 1); ++ ++ local_irq_restore(flags); ++ return 0; ++} ++ ++static int ++rs_tiocmget(struct tty_struct *tty, struct file *file) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ unsigned int result; ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ ++ result = ++ (!E100_RTS_GET(info) ? TIOCM_RTS : 0) ++ | (!E100_DTR_GET(info) ? TIOCM_DTR : 0) ++ | (!E100_RI_GET(info) ? TIOCM_RNG : 0) ++ | (!E100_DSR_GET(info) ? TIOCM_DSR : 0) ++ | (!E100_CD_GET(info) ? TIOCM_CAR : 0) ++ | (!E100_CTS_GET(info) ? TIOCM_CTS : 0); ++ ++ local_irq_restore(flags); ++ ++#ifdef SERIAL_DEBUG_IO ++ printk(KERN_DEBUG "ser%i: modem state: %i 0x%08X\n", ++ info->line, result, result); ++ { ++ char s[100]; ++ ++ get_control_state_str(result, s); ++ printk(KERN_DEBUG "state: %s\n", s); ++ } ++#endif ++ return result; ++ ++} ++ ++ ++static int ++rs_ioctl(struct tty_struct *tty, struct file * file, ++ unsigned int cmd, unsigned long arg) ++{ ++ struct e100_serial * info = (struct e100_serial *)tty->driver_data; ++ ++ if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && ++ (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGWILD) && ++ (cmd != TIOCSERSWILD) && (cmd != TIOCSERGSTRUCT)) { ++ if (tty->flags & (1 << TTY_IO_ERROR)) ++ return -EIO; ++ } ++ ++ switch (cmd) { ++ case TIOCGSERIAL: ++ return get_serial_info(info, ++ (struct serial_struct *) arg); ++ case TIOCSSERIAL: ++ return set_serial_info(info, ++ (struct serial_struct *) arg); ++ case TIOCSERGETLSR: /* Get line status register */ ++ return get_lsr_info(info, (unsigned int *) arg); ++ ++ case TIOCSERGSTRUCT: ++ if (copy_to_user((struct e100_serial *) arg, ++ info, sizeof(struct e100_serial))) ++ return -EFAULT; ++ return 0; ++ ++#if defined(CONFIG_ETRAX_RS485) ++ case TIOCSERSETRS485: ++ { ++ /* In this ioctl we still use the old structure ++ * rs485_control for backward compatibility ++ * (if we use serial_rs485, then old user-level code ++ * wouldn't work anymore...). ++ * The use of this ioctl is deprecated: use TIOCSRS485 ++ * instead.*/ ++ struct rs485_control rs485ctrl; ++ struct serial_rs485 rs485data; ++ printk(KERN_DEBUG "The use of this ioctl is deprecated. Use TIOCSRS485 instead\n"); ++ if (copy_from_user(&rs485ctrl, (struct rs485_control *)arg, ++ sizeof(rs485ctrl))) ++ return -EFAULT; ++ ++ rs485data.delay_rts_before_send = rs485ctrl.delay_rts_before_send; ++ rs485data.flags = 0; ++ if (rs485ctrl.enabled) ++ rs485data.flags |= SER_RS485_ENABLED; ++ else ++ rs485data.flags &= ~(SER_RS485_ENABLED); ++ ++ if (rs485ctrl.rts_on_send) ++ rs485data.flags |= SER_RS485_RTS_ON_SEND; ++ else ++ rs485data.flags &= ~(SER_RS485_RTS_ON_SEND); ++ ++ if (rs485ctrl.rts_after_sent) ++ rs485data.flags |= SER_RS485_RTS_AFTER_SEND; ++ else ++ rs485data.flags &= ~(SER_RS485_RTS_AFTER_SEND); ++ ++ return e100_enable_rs485(tty, &rs485data); ++ } ++ ++ case TIOCSRS485: ++ { ++ /* This is the new version of TIOCSRS485, with new ++ * data structure serial_rs485 */ ++ struct serial_rs485 rs485data; ++ if (copy_from_user(&rs485data, (struct rs485_control *)arg, ++ sizeof(rs485data))) ++ return -EFAULT; ++ ++ return e100_enable_rs485(tty, &rs485data); ++ } ++ ++ ++ case TIOCSERWRRS485: ++ { ++ struct rs485_write rs485wr; ++ if (copy_from_user(&rs485wr, (struct rs485_write *)arg, ++ sizeof(rs485wr))) ++ return -EFAULT; ++ ++ return e100_write_rs485(tty, rs485wr.outc, rs485wr.outc_size); ++ } ++#endif ++ ++ default: ++ return -ENOIOCTLCMD; ++ } ++ return 0; ++} ++ ++static void ++rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios) ++{ ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ ++ change_speed(info); ++ ++ /* Handle turning off CRTSCTS */ ++ if ((old_termios->c_cflag & CRTSCTS) && ++ !(tty->termios->c_cflag & CRTSCTS)) { ++ tty->hw_stopped = 0; ++ rs_start(tty); ++ } ++ ++} ++ ++/* ++ * ------------------------------------------------------------ ++ * rs_close() ++ * ++ * This routine is called when the serial port gets closed. First, we ++ * wait for the last remaining data to be sent. Then, we unlink its ++ * S structure from the interrupt chain if necessary, and we free ++ * that IRQ if nothing is left in the chain. ++ * ------------------------------------------------------------ ++ */ ++static void ++rs_close(struct tty_struct *tty, struct file * filp) ++{ ++ struct e100_serial * info = (struct e100_serial *)tty->driver_data; ++ unsigned long flags; ++ ++ if (!info) ++ return; ++ ++ /* interrupts are disabled for this entire function */ ++ ++ local_irq_save(flags); ++ ++ if (tty_hung_up_p(filp)) { ++ local_irq_restore(flags); ++ return; ++ } ++ ++#ifdef SERIAL_DEBUG_OPEN ++ printk("[%d] rs_close ttyS%d, count = %d\n", current->pid, ++ info->line, info->count); ++#endif ++ if ((tty->count == 1) && (info->count != 1)) { ++ /* ++ * Uh, oh. tty->count is 1, which means that the tty ++ * structure will be freed. Info->count should always ++ * be one in these conditions. If it's greater than ++ * one, we've got real problems, since it means the ++ * serial port won't be shutdown. ++ */ ++ printk(KERN_CRIT ++ "rs_close: bad serial port count; tty->count is 1, " ++ "info->count is %d\n", info->count); ++ info->count = 1; ++ } ++ if (--info->count < 0) { ++ printk(KERN_CRIT "rs_close: bad serial port count for ttyS%d: %d\n", ++ info->line, info->count); ++ info->count = 0; ++ } ++ if (info->count) { ++ local_irq_restore(flags); ++ return; ++ } ++ info->flags |= ASYNC_CLOSING; ++ /* ++ * Save the termios structure, since this port may have ++ * separate termios for callout and dialin. ++ */ ++ if (info->flags & ASYNC_NORMAL_ACTIVE) ++ info->normal_termios = *tty->termios; ++ /* ++ * Now we wait for the transmit buffer to clear; and we notify ++ * the line discipline to only process XON/XOFF characters. ++ */ ++ tty->closing = 1; ++ if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) ++ tty_wait_until_sent(tty, info->closing_wait); ++ /* ++ * At this point we stop accepting input. To do this, we ++ * disable the serial receiver and the DMA receive interrupt. ++ */ ++#ifdef SERIAL_HANDLE_EARLY_ERRORS ++ e100_disable_serial_data_irq(info); ++#endif ++ ++#ifndef CONFIG_SVINTO_SIM ++ e100_disable_rx(info); ++ e100_disable_rx_irq(info); ++ ++ if (info->flags & ASYNC_INITIALIZED) { ++ /* ++ * Before we drop DTR, make sure the UART transmitter ++ * has completely drained; this is especially ++ * important as we have a transmit FIFO! ++ */ ++ rs_wait_until_sent(tty, HZ); ++ } ++#endif ++ ++ shutdown(info); ++ rs_flush_buffer(tty); ++ tty_ldisc_flush(tty); ++ tty->closing = 0; ++ info->event = 0; ++ info->port.tty = NULL; ++ if (info->blocked_open) { ++ if (info->close_delay) ++ schedule_timeout_interruptible(info->close_delay); ++ wake_up_interruptible(&info->open_wait); ++ } ++ info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); ++ wake_up_interruptible(&info->close_wait); ++ local_irq_restore(flags); ++ ++ /* port closed */ ++ ++#if defined(CONFIG_ETRAX_RS485) ++ if (info->rs485.flags & SER_RS485_ENABLED) { ++ info->rs485.flags &= ~(SER_RS485_ENABLED); ++#if defined(CONFIG_ETRAX_RS485_ON_PA) ++ *R_PORT_PA_DATA = port_pa_data_shadow &= ~(1 << rs485_pa_bit); ++#endif ++#if defined(CONFIG_ETRAX_RS485_ON_PORT_G) ++ REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow, ++ rs485_port_g_bit, 0); ++#endif ++#if defined(CONFIG_ETRAX_RS485_LTC1387) ++ REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow, ++ CONFIG_ETRAX_RS485_LTC1387_DXEN_PORT_G_BIT, 0); ++ REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow, ++ CONFIG_ETRAX_RS485_LTC1387_RXEN_PORT_G_BIT, 0); ++#endif ++ } ++#endif ++ ++ /* ++ * Release any allocated DMA irq's. ++ */ ++ if (info->dma_in_enabled) { ++ free_irq(info->dma_in_irq_nbr, info); ++ cris_free_dma(info->dma_in_nbr, info->dma_in_irq_description); ++ info->uses_dma_in = 0; ++#ifdef SERIAL_DEBUG_OPEN ++ printk(KERN_DEBUG "DMA irq '%s' freed\n", ++ info->dma_in_irq_description); ++#endif ++ } ++ if (info->dma_out_enabled) { ++ free_irq(info->dma_out_irq_nbr, info); ++ cris_free_dma(info->dma_out_nbr, info->dma_out_irq_description); ++ info->uses_dma_out = 0; ++#ifdef SERIAL_DEBUG_OPEN ++ printk(KERN_DEBUG "DMA irq '%s' freed\n", ++ info->dma_out_irq_description); ++#endif ++ } ++} ++ ++/* ++ * rs_wait_until_sent() --- wait until the transmitter is empty ++ */ ++static void rs_wait_until_sent(struct tty_struct *tty, int timeout) ++{ ++ unsigned long orig_jiffies; ++ struct e100_serial *info = (struct e100_serial *)tty->driver_data; ++ unsigned long curr_time = jiffies; ++ unsigned long curr_time_usec = GET_JIFFIES_USEC(); ++ long elapsed_usec = ++ (curr_time - info->last_tx_active) * (1000000/HZ) + ++ curr_time_usec - info->last_tx_active_usec; ++ ++ /* ++ * Check R_DMA_CHx_STATUS bit 0-6=number of available bytes in FIFO ++ * R_DMA_CHx_HWSW bit 31-16=nbr of bytes left in DMA buffer (0=64k) ++ */ ++ lock_kernel(); ++ orig_jiffies = jiffies; ++ while (info->xmit.head != info->xmit.tail || /* More in send queue */ ++ (*info->ostatusadr & 0x007f) || /* more in FIFO */ ++ (elapsed_usec < 2*info->char_time_usec)) { ++ schedule_timeout_interruptible(1); ++ if (signal_pending(current)) ++ break; ++ if (timeout && time_after(jiffies, orig_jiffies + timeout)) ++ break; ++ curr_time = jiffies; ++ curr_time_usec = GET_JIFFIES_USEC(); ++ elapsed_usec = ++ (curr_time - info->last_tx_active) * (1000000/HZ) + ++ curr_time_usec - info->last_tx_active_usec; ++ } ++ set_current_state(TASK_RUNNING); ++ unlock_kernel(); ++} ++ ++/* ++ * rs_hangup() --- called by tty_hangup() when a hangup is signaled. ++ */ ++void ++rs_hangup(struct tty_struct *tty) ++{ ++ struct e100_serial * info = (struct e100_serial *)tty->driver_data; ++ ++ rs_flush_buffer(tty); ++ shutdown(info); ++ info->event = 0; ++ info->count = 0; ++ info->flags &= ~ASYNC_NORMAL_ACTIVE; ++ info->port.tty = NULL; ++ wake_up_interruptible(&info->open_wait); ++} ++ ++/* ++ * ------------------------------------------------------------ ++ * rs_open() and friends ++ * ------------------------------------------------------------ ++ */ ++static int ++block_til_ready(struct tty_struct *tty, struct file * filp, ++ struct e100_serial *info) ++{ ++ DECLARE_WAITQUEUE(wait, current); ++ unsigned long flags; ++ int retval; ++ int do_clocal = 0, extra_count = 0; ++ ++ /* ++ * If the device is in the middle of being closed, then block ++ * until it's done, and then try again. ++ */ ++ if (tty_hung_up_p(filp) || ++ (info->flags & ASYNC_CLOSING)) { ++ wait_event_interruptible(info->close_wait, ++ !(info->flags & ASYNC_CLOSING)); ++#ifdef SERIAL_DO_RESTART ++ if (info->flags & ASYNC_HUP_NOTIFY) ++ return -EAGAIN; ++ else ++ return -ERESTARTSYS; ++#else ++ return -EAGAIN; ++#endif ++ } ++ ++ /* ++ * If non-blocking mode is set, or the port is not enabled, ++ * then make the check up front and then exit. ++ */ ++ if ((filp->f_flags & O_NONBLOCK) || ++ (tty->flags & (1 << TTY_IO_ERROR))) { ++ info->flags |= ASYNC_NORMAL_ACTIVE; ++ return 0; ++ } ++ ++ if (tty->termios->c_cflag & CLOCAL) { ++ do_clocal = 1; ++ } ++ ++ /* ++ * Block waiting for the carrier detect and the line to become ++ * free (i.e., not in use by the callout). While we are in ++ * this loop, info->count is dropped by one, so that ++ * rs_close() knows when to free things. We restore it upon ++ * exit, either normal or abnormal. ++ */ ++ retval = 0; ++ add_wait_queue(&info->open_wait, &wait); ++#ifdef SERIAL_DEBUG_OPEN ++ printk("block_til_ready before block: ttyS%d, count = %d\n", ++ info->line, info->count); ++#endif ++ local_irq_save(flags); ++ if (!tty_hung_up_p(filp)) { ++ extra_count++; ++ info->count--; ++ } ++ local_irq_restore(flags); ++ info->blocked_open++; ++ while (1) { ++ local_irq_save(flags); ++ /* assert RTS and DTR */ ++ e100_rts(info, 1); ++ e100_dtr(info, 1); ++ local_irq_restore(flags); ++ set_current_state(TASK_INTERRUPTIBLE); ++ if (tty_hung_up_p(filp) || ++ !(info->flags & ASYNC_INITIALIZED)) { ++#ifdef SERIAL_DO_RESTART ++ if (info->flags & ASYNC_HUP_NOTIFY) ++ retval = -EAGAIN; ++ else ++ retval = -ERESTARTSYS; ++#else ++ retval = -EAGAIN; ++#endif ++ break; ++ } ++ if (!(info->flags & ASYNC_CLOSING) && do_clocal) ++ /* && (do_clocal || DCD_IS_ASSERTED) */ ++ break; ++ if (signal_pending(current)) { ++ retval = -ERESTARTSYS; ++ break; ++ } ++#ifdef SERIAL_DEBUG_OPEN ++ printk("block_til_ready blocking: ttyS%d, count = %d\n", ++ info->line, info->count); ++#endif ++ schedule(); ++ } ++ set_current_state(TASK_RUNNING); ++ remove_wait_queue(&info->open_wait, &wait); ++ if (extra_count) ++ info->count++; ++ info->blocked_open--; ++#ifdef SERIAL_DEBUG_OPEN ++ printk("block_til_ready after blocking: ttyS%d, count = %d\n", ++ info->line, info->count); ++#endif ++ if (retval) ++ return retval; ++ info->flags |= ASYNC_NORMAL_ACTIVE; ++ return 0; ++} ++ ++static void ++deinit_port(struct e100_serial *info) ++{ ++ if (info->dma_out_enabled) { ++ cris_free_dma(info->dma_out_nbr, info->dma_out_irq_description); ++ free_irq(info->dma_out_irq_nbr, info); ++ } ++ if (info->dma_in_enabled) { ++ cris_free_dma(info->dma_in_nbr, info->dma_in_irq_description); ++ free_irq(info->dma_in_irq_nbr, info); ++ } ++} ++ ++/* ++ * This routine is called whenever a serial port is opened. ++ * It performs the serial-specific initialization for the tty structure. ++ */ ++static int ++rs_open(struct tty_struct *tty, struct file * filp) ++{ ++ struct e100_serial *info; ++ int retval, line; ++ unsigned long page; ++ int allocated_resources = 0; ++ ++ /* find which port we want to open */ ++ line = tty->index; ++ ++ if (line < 0 || line >= NR_PORTS) ++ return -ENODEV; ++ ++ /* find the corresponding e100_serial struct in the table */ ++ info = rs_table + line; ++ ++ /* don't allow the opening of ports that are not enabled in the HW config */ ++ if (!info->enabled) ++ return -ENODEV; ++ ++#ifdef SERIAL_DEBUG_OPEN ++ printk("[%d] rs_open %s, count = %d\n", current->pid, tty->name, ++ info->count); ++#endif ++ ++ info->count++; ++ tty->driver_data = info; ++ info->port.tty = tty; ++ ++ info->port.tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; ++ ++ if (!tmp_buf) { ++ page = get_zeroed_page(GFP_KERNEL); ++ if (!page) { ++ return -ENOMEM; ++ } ++ if (tmp_buf) ++ free_page(page); ++ else ++ tmp_buf = (unsigned char *) page; ++ } ++ ++ /* ++ * If the port is in the middle of closing, bail out now ++ */ ++ if (tty_hung_up_p(filp) || ++ (info->flags & ASYNC_CLOSING)) { ++ wait_event_interruptible(info->close_wait, ++ !(info->flags & ASYNC_CLOSING)); ++#ifdef SERIAL_DO_RESTART ++ return ((info->flags & ASYNC_HUP_NOTIFY) ? ++ -EAGAIN : -ERESTARTSYS); ++#else ++ return -EAGAIN; ++#endif ++ } ++ ++ /* ++ * If DMA is enabled try to allocate the irq's. ++ */ ++ if (info->count == 1) { ++ allocated_resources = 1; ++ if (info->dma_in_enabled) { ++ if (request_irq(info->dma_in_irq_nbr, ++ rec_interrupt, ++ info->dma_in_irq_flags, ++ info->dma_in_irq_description, ++ info)) { ++ printk(KERN_WARNING "DMA irq '%s' busy; " ++ "falling back to non-DMA mode\n", ++ info->dma_in_irq_description); ++ /* Make sure we never try to use DMA in */ ++ /* for the port again. */ ++ info->dma_in_enabled = 0; ++ } else if (cris_request_dma(info->dma_in_nbr, ++ info->dma_in_irq_description, ++ DMA_VERBOSE_ON_ERROR, ++ info->dma_owner)) { ++ free_irq(info->dma_in_irq_nbr, info); ++ printk(KERN_WARNING "DMA '%s' busy; " ++ "falling back to non-DMA mode\n", ++ info->dma_in_irq_description); ++ /* Make sure we never try to use DMA in */ ++ /* for the port again. */ ++ info->dma_in_enabled = 0; ++ } ++#ifdef SERIAL_DEBUG_OPEN ++ else ++ printk(KERN_DEBUG "DMA irq '%s' allocated\n", ++ info->dma_in_irq_description); ++#endif ++ } ++ if (info->dma_out_enabled) { ++ if (request_irq(info->dma_out_irq_nbr, ++ tr_interrupt, ++ info->dma_out_irq_flags, ++ info->dma_out_irq_description, ++ info)) { ++ printk(KERN_WARNING "DMA irq '%s' busy; " ++ "falling back to non-DMA mode\n", ++ info->dma_out_irq_description); ++ /* Make sure we never try to use DMA out */ ++ /* for the port again. */ ++ info->dma_out_enabled = 0; ++ } else if (cris_request_dma(info->dma_out_nbr, ++ info->dma_out_irq_description, ++ DMA_VERBOSE_ON_ERROR, ++ info->dma_owner)) { ++ free_irq(info->dma_out_irq_nbr, info); ++ printk(KERN_WARNING "DMA '%s' busy; " ++ "falling back to non-DMA mode\n", ++ info->dma_out_irq_description); ++ /* Make sure we never try to use DMA out */ ++ /* for the port again. */ ++ info->dma_out_enabled = 0; ++ } ++#ifdef SERIAL_DEBUG_OPEN ++ else ++ printk(KERN_DEBUG "DMA irq '%s' allocated\n", ++ info->dma_out_irq_description); ++#endif ++ } ++ } ++ ++ /* ++ * Start up the serial port ++ */ ++ ++ retval = startup(info); ++ if (retval) { ++ if (allocated_resources) ++ deinit_port(info); ++ ++ /* FIXME Decrease count info->count here too? */ ++ return retval; ++ } ++ ++ ++ retval = block_til_ready(tty, filp, info); ++ if (retval) { ++#ifdef SERIAL_DEBUG_OPEN ++ printk("rs_open returning after block_til_ready with %d\n", ++ retval); ++#endif ++ if (allocated_resources) ++ deinit_port(info); ++ ++ return retval; ++ } ++ ++ if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) { ++ *tty->termios = info->normal_termios; ++ change_speed(info); ++ } ++ ++#ifdef SERIAL_DEBUG_OPEN ++ printk("rs_open ttyS%d successful...\n", info->line); ++#endif ++ DLOG_INT_TRIG( log_int_pos = 0); ++ ++ DFLIP( if (info->line == SERIAL_DEBUG_LINE) { ++ info->icount.rx = 0; ++ } ); ++ ++ return 0; ++} ++ ++#ifdef CONFIG_PROC_FS ++/* ++ * /proc fs routines.... ++ */ ++ ++static void seq_line_info(struct seq_file *m, struct e100_serial *info) ++{ ++ unsigned long tmp; ++ ++ seq_printf(m, "%d: uart:E100 port:%lX irq:%d", ++ info->line, (unsigned long)info->ioport, info->irq); ++ ++ if (!info->ioport || (info->type == PORT_UNKNOWN)) { ++ seq_printf(m, "\n"); ++ return; ++ } ++ ++ seq_printf(m, " baud:%d", info->baud); ++ seq_printf(m, " tx:%lu rx:%lu", ++ (unsigned long)info->icount.tx, ++ (unsigned long)info->icount.rx); ++ tmp = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE); ++ if (tmp) ++ seq_printf(m, " tx_pend:%lu/%lu", ++ (unsigned long)tmp, ++ (unsigned long)SERIAL_XMIT_SIZE); ++ ++ seq_printf(m, " rx_pend:%lu/%lu", ++ (unsigned long)info->recv_cnt, ++ (unsigned long)info->max_recv_cnt); ++ ++#if 1 ++ if (info->port.tty) { ++ if (info->port.tty->stopped) ++ seq_printf(m, " stopped:%i", ++ (int)info->port.tty->stopped); ++ if (info->port.tty->hw_stopped) ++ seq_printf(m, " hw_stopped:%i", ++ (int)info->port.tty->hw_stopped); ++ } ++ ++ { ++ unsigned char rstat = info->ioport[REG_STATUS]; ++ if (rstat & IO_MASK(R_SERIAL0_STATUS, xoff_detect)) ++ seq_printf(m, " xoff_detect:1"); ++ } ++ ++#endif ++ ++ if (info->icount.frame) ++ seq_printf(m, " fe:%lu", (unsigned long)info->icount.frame); ++ ++ if (info->icount.parity) ++ seq_printf(m, " pe:%lu", (unsigned long)info->icount.parity); ++ ++ if (info->icount.brk) ++ seq_printf(m, " brk:%lu", (unsigned long)info->icount.brk); ++ ++ if (info->icount.overrun) ++ seq_printf(m, " oe:%lu", (unsigned long)info->icount.overrun); ++ ++ /* ++ * Last thing is the RS-232 status lines ++ */ ++ if (!E100_RTS_GET(info)) ++ seq_puts(m, "|RTS"); ++ if (!E100_CTS_GET(info)) ++ seq_puts(m, "|CTS"); ++ if (!E100_DTR_GET(info)) ++ seq_puts(m, "|DTR"); ++ if (!E100_DSR_GET(info)) ++ seq_puts(m, "|DSR"); ++ if (!E100_CD_GET(info)) ++ seq_puts(m, "|CD"); ++ if (!E100_RI_GET(info)) ++ seq_puts(m, "|RI"); ++ seq_puts(m, "\n"); ++} ++ ++ ++static int crisv10_proc_show(struct seq_file *m, void *v) ++{ ++ int i; ++ ++ seq_printf(m, "serinfo:1.0 driver:%s\n", serial_version); ++ ++ for (i = 0; i < NR_PORTS; i++) { ++ if (!rs_table[i].enabled) ++ continue; ++ seq_line_info(m, &rs_table[i]); ++ } ++#ifdef DEBUG_LOG_INCLUDED ++ for (i = 0; i < debug_log_pos; i++) { ++ seq_printf(m, "%-4i %lu.%lu ", ++ i, debug_log[i].time, ++ timer_data_to_ns(debug_log[i].timer_data)); ++ seq_printf(m, debug_log[i].string, debug_log[i].value); ++ } ++ seq_printf(m, "debug_log %i/%i\n", i, DEBUG_LOG_SIZE); ++ debug_log_pos = 0; ++#endif ++ return 0; ++} ++ ++static int crisv10_proc_open(struct inode *inode, struct file *file) ++{ ++ return single_open(file, crisv10_proc_show, NULL); ++} ++ ++static const struct file_operations crisv10_proc_fops = { ++ .owner = THIS_MODULE, ++ .open = crisv10_proc_open, ++ .read = seq_read, ++ .llseek = seq_lseek, ++ .release = single_release, ++}; ++#endif ++ ++ ++/* Finally, routines used to initialize the serial driver. */ ++ ++static void show_serial_version(void) ++{ ++ printk(KERN_INFO ++ "ETRAX 100LX serial-driver %s, " ++ "(c) 2000-2004 Axis Communications AB\r\n", ++ &serial_version[11]); /* "$Revision: x.yy" */ ++} ++ ++/* rs_init inits the driver at boot (using the module_init chain) */ ++ ++static const struct tty_operations rs_ops = { ++ .open = rs_open, ++ .close = rs_close, ++ .write = rs_write, ++ .flush_chars = rs_flush_chars, ++ .write_room = rs_write_room, ++ .chars_in_buffer = rs_chars_in_buffer, ++ .flush_buffer = rs_flush_buffer, ++ .ioctl = rs_ioctl, ++ .throttle = rs_throttle, ++ .unthrottle = rs_unthrottle, ++ .set_termios = rs_set_termios, ++ .stop = rs_stop, ++ .start = rs_start, ++ .hangup = rs_hangup, ++ .break_ctl = rs_break, ++ .send_xchar = rs_send_xchar, ++ .wait_until_sent = rs_wait_until_sent, ++ .tiocmget = rs_tiocmget, ++ .tiocmset = rs_tiocmset, ++#ifdef CONFIG_PROC_FS ++ .proc_fops = &crisv10_proc_fops, ++#endif ++}; ++ ++static int __init rs_init(void) ++{ ++ int i; ++ struct e100_serial *info; ++ struct tty_driver *driver = alloc_tty_driver(NR_PORTS); ++ ++ if (!driver) ++ return -ENOMEM; ++ ++ show_serial_version(); ++ ++ /* Setup the timed flush handler system */ ++ ++#if !defined(CONFIG_ETRAX_SERIAL_FAST_TIMER) ++ setup_timer(&flush_timer, timed_flush_handler, 0); ++ mod_timer(&flush_timer, jiffies + 5); ++#endif ++ ++#if defined(CONFIG_ETRAX_RS485) ++#if defined(CONFIG_ETRAX_RS485_ON_PA) ++ if (cris_io_interface_allocate_pins(if_ser0, 'a', rs485_pa_bit, ++ rs485_pa_bit)) { ++ printk(KERN_CRIT "ETRAX100LX serial: Could not allocate " ++ "RS485 pin\n"); ++ put_tty_driver(driver); ++ return -EBUSY; ++ } ++#endif ++#if defined(CONFIG_ETRAX_RS485_ON_PORT_G) ++ if (cris_io_interface_allocate_pins(if_ser0, 'g', rs485_pa_bit, ++ rs485_port_g_bit)) { ++ printk(KERN_CRIT "ETRAX100LX serial: Could not allocate " ++ "RS485 pin\n"); ++ put_tty_driver(driver); ++ return -EBUSY; ++ } ++#endif ++#endif ++ ++ /* Initialize the tty_driver structure */ ++ ++ driver->driver_name = "serial"; ++ driver->name = "ttyS"; ++ driver->major = TTY_MAJOR; ++ driver->minor_start = 64; ++ driver->type = TTY_DRIVER_TYPE_SERIAL; ++ driver->subtype = SERIAL_TYPE_NORMAL; ++ driver->init_termios = tty_std_termios; ++ driver->init_termios.c_cflag = ++ B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */ ++ driver->init_termios.c_ispeed = 115200; ++ driver->init_termios.c_ospeed = 115200; ++ driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; ++ ++ tty_set_operations(driver, &rs_ops); ++ serial_driver = driver; ++ if (tty_register_driver(driver)) ++ panic("Couldn't register serial driver\n"); ++ /* do some initializing for the separate ports */ ++ ++ for (i = 0, info = rs_table; i < NR_PORTS; i++,info++) { ++ if (info->enabled) { ++ if (cris_request_io_interface(info->io_if, ++ info->io_if_description)) { ++ printk(KERN_CRIT "ETRAX100LX async serial: " ++ "Could not allocate IO pins for " ++ "%s, port %d\n", ++ info->io_if_description, i); ++ info->enabled = 0; ++ } ++ } ++ info->uses_dma_in = 0; ++ info->uses_dma_out = 0; ++ info->line = i; ++ info->port.tty = NULL; ++ info->type = PORT_ETRAX; ++ info->tr_running = 0; ++ info->forced_eop = 0; ++ info->baud_base = DEF_BAUD_BASE; ++ info->custom_divisor = 0; ++ info->flags = 0; ++ info->close_delay = 5*HZ/10; ++ info->closing_wait = 30*HZ; ++ info->x_char = 0; ++ info->event = 0; ++ info->count = 0; ++ info->blocked_open = 0; ++ info->normal_termios = driver->init_termios; ++ init_waitqueue_head(&info->open_wait); ++ init_waitqueue_head(&info->close_wait); ++ info->xmit.buf = NULL; ++ info->xmit.tail = info->xmit.head = 0; ++ info->first_recv_buffer = info->last_recv_buffer = NULL; ++ info->recv_cnt = info->max_recv_cnt = 0; ++ info->last_tx_active_usec = 0; ++ info->last_tx_active = 0; ++ ++#if defined(CONFIG_ETRAX_RS485) ++ /* Set sane defaults */ ++ info->rs485.flags &= ~(SER_RS485_RTS_ON_SEND); ++ info->rs485.flags |= SER_RS485_RTS_AFTER_SEND; ++ info->rs485.delay_rts_before_send = 0; ++ info->rs485.flags &= ~(SER_RS485_ENABLED); ++#endif ++ INIT_WORK(&info->work, do_softint); ++ ++ if (info->enabled) { ++ printk(KERN_INFO "%s%d at 0x%x is a builtin UART with DMA\n", ++ serial_driver->name, info->line, (unsigned int)info->ioport); ++ } ++ } ++#ifdef CONFIG_ETRAX_FAST_TIMER ++#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER ++ memset(fast_timers, 0, sizeof(fast_timers)); ++#endif ++#ifdef CONFIG_ETRAX_RS485 ++ memset(fast_timers_rs485, 0, sizeof(fast_timers_rs485)); ++#endif ++ fast_timer_init(); ++#endif ++ ++#ifndef CONFIG_SVINTO_SIM ++#ifndef CONFIG_ETRAX_KGDB ++ /* Not needed in simulator. May only complicate stuff. */ ++ /* hook the irq's for DMA channel 6 and 7, serial output and input, and some more... */ ++ ++ if (request_irq(SERIAL_IRQ_NBR, ser_interrupt, ++ IRQF_SHARED | IRQF_DISABLED, "serial ", driver)) ++ panic("%s: Failed to request irq8", __func__); ++ ++#endif ++#endif /* CONFIG_SVINTO_SIM */ ++ ++ return 0; ++} ++ ++/* this makes sure that rs_init is called during kernel boot */ ++ ++module_init(rs_init); +diff -Nur linux-2.6.32.orig/drivers/usb/host/hc-cris-dbg.h linux-2.6.32/drivers/usb/host/hc-cris-dbg.h +--- linux-2.6.32.orig/drivers/usb/host/hc-cris-dbg.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.32/drivers/usb/host/hc-cris-dbg.h 2010-01-10 13:41:59.276309474 +0100 @@ -0,0 +1,146 @@ + +/* macros for debug output */ @@ -577,9 +6915,9 @@ diff -Nur linux-2.6.31.5.orig/drivers/usb/host/hc-cris-dbg.h linux-2.6.31.5/driv + }; \ + s; \ + }) -diff -Nur linux-2.6.31.5.orig/drivers/usb/host/hc-crisv10.c linux-2.6.31.5/drivers/usb/host/hc-crisv10.c ---- linux-2.6.31.5.orig/drivers/usb/host/hc-crisv10.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.31.5/drivers/usb/host/hc-crisv10.c 2009-11-09 21:10:53.049913537 +0100 +diff -Nur linux-2.6.32.orig/drivers/usb/host/hc-crisv10.c linux-2.6.32/drivers/usb/host/hc-crisv10.c +--- linux-2.6.32.orig/drivers/usb/host/hc-crisv10.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.32/drivers/usb/host/hc-crisv10.c 2010-01-10 13:41:59.326309689 +0100 @@ -0,0 +1,4801 @@ +/* + * @@ -5382,9 +11720,9 @@ diff -Nur linux-2.6.31.5.orig/drivers/usb/host/hc-crisv10.c linux-2.6.31.5/drive +/* Module hooks */ +module_init(module_hcd_init); +module_exit(module_hcd_exit); -diff -Nur linux-2.6.31.5.orig/drivers/usb/host/hc-crisv10.h linux-2.6.31.5/drivers/usb/host/hc-crisv10.h ---- linux-2.6.31.5.orig/drivers/usb/host/hc-crisv10.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.31.5/drivers/usb/host/hc-crisv10.h 2009-11-09 21:10:53.061914787 +0100 +diff -Nur linux-2.6.32.orig/drivers/usb/host/hc-crisv10.h linux-2.6.32/drivers/usb/host/hc-crisv10.h +--- linux-2.6.32.orig/drivers/usb/host/hc-crisv10.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.32/drivers/usb/host/hc-crisv10.h 2010-01-10 13:41:59.326309689 +0100 @@ -0,0 +1,331 @@ +#ifndef __LINUX_ETRAX_USB_H +#define __LINUX_ETRAX_USB_H @@ -5717,18 +12055,56 @@ diff -Nur linux-2.6.31.5.orig/drivers/usb/host/hc-crisv10.h linux-2.6.31.5/drive +#define USB_SB_command__full__yes 1 + +#endif -diff -Nur linux-2.6.31.5.orig/drivers/usb/host/Makefile linux-2.6.31.5/drivers/usb/host/Makefile ---- linux-2.6.31.5.orig/drivers/usb/host/Makefile 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/drivers/usb/host/Makefile 2009-11-09 21:10:53.090776289 +0100 -@@ -31,3 +31,4 @@ +diff -Nur linux-2.6.32.orig/drivers/usb/host/Makefile linux-2.6.32/drivers/usb/host/Makefile +--- linux-2.6.32.orig/drivers/usb/host/Makefile 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/drivers/usb/host/Makefile 2010-01-10 13:41:59.326309689 +0100 +@@ -32,3 +32,4 @@ obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o obj-$(CONFIG_USB_ISP1760_HCD) += isp1760.o obj-$(CONFIG_USB_HWA_HCD) += hwa-hc.o +obj-$(CONFIG_ETRAX_USB_HOST) += hc-crisv10.o -diff -Nur linux-2.6.31.5.orig/drivers/usb/Makefile linux-2.6.31.5/drivers/usb/Makefile ---- linux-2.6.31.5.orig/drivers/usb/Makefile 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/drivers/usb/Makefile 2009-11-09 21:10:53.111922280 +0100 -@@ -20,6 +20,7 @@ +diff -Nur linux-2.6.32.orig/drivers/usb/host/Makefile.orig linux-2.6.32/drivers/usb/host/Makefile.orig +--- linux-2.6.32.orig/drivers/usb/host/Makefile.orig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.32/drivers/usb/host/Makefile.orig 2009-12-03 04:51:21.000000000 +0100 +@@ -0,0 +1,34 @@ ++# ++# Makefile for USB Host Controller Drivers ++# ++ ++ifeq ($(CONFIG_USB_DEBUG),y) ++ EXTRA_CFLAGS += -DDEBUG ++endif ++ ++isp1760-objs := isp1760-hcd.o isp1760-if.o ++fhci-objs := fhci-hcd.o fhci-hub.o fhci-q.o fhci-mem.o \ ++ fhci-tds.o fhci-sched.o ++ifeq ($(CONFIG_FHCI_DEBUG),y) ++fhci-objs += fhci-dbg.o ++endif ++xhci-objs := xhci-hcd.o xhci-mem.o xhci-pci.o xhci-ring.o xhci-hub.o xhci-dbg.o ++ ++obj-$(CONFIG_USB_WHCI_HCD) += whci/ ++ ++obj-$(CONFIG_PCI) += pci-quirks.o ++ ++obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o ++obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o ++obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o ++obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o ++obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o ++obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o ++obj-$(CONFIG_USB_FHCI_HCD) += fhci.o ++obj-$(CONFIG_USB_XHCI_HCD) += xhci.o ++obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o ++obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o ++obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o ++obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o ++obj-$(CONFIG_USB_ISP1760_HCD) += isp1760.o ++obj-$(CONFIG_USB_HWA_HCD) += hwa-hc.o +diff -Nur linux-2.6.32.orig/drivers/usb/Makefile linux-2.6.32/drivers/usb/Makefile +--- linux-2.6.32.orig/drivers/usb/Makefile 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/drivers/usb/Makefile 2010-01-10 13:41:59.326309689 +0100 +@@ -21,6 +21,7 @@ obj-$(CONFIG_USB_R8A66597_HCD) += host/ obj-$(CONFIG_USB_HWA_HCD) += host/ obj-$(CONFIG_USB_ISP1760_HCD) += host/ @@ -5736,9 +12112,59 @@ diff -Nur linux-2.6.31.5.orig/drivers/usb/Makefile linux-2.6.31.5/drivers/usb/Ma obj-$(CONFIG_USB_C67X00_HCD) += c67x00/ -diff -Nur linux-2.6.31.5.orig/lib/klist.c linux-2.6.31.5/lib/klist.c ---- linux-2.6.31.5.orig/lib/klist.c 2009-10-23 00:57:56.000000000 +0200 -+++ linux-2.6.31.5/lib/klist.c 2009-11-09 21:10:53.142378957 +0100 +diff -Nur linux-2.6.32.orig/drivers/usb/Makefile.orig linux-2.6.32/drivers/usb/Makefile.orig +--- linux-2.6.32.orig/drivers/usb/Makefile.orig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.32/drivers/usb/Makefile.orig 2009-12-03 04:51:21.000000000 +0100 +@@ -0,0 +1,46 @@ ++# ++# Makefile for the kernel USB device drivers. ++# ++ ++# Object files in subdirectories ++ ++obj-$(CONFIG_USB) += core/ ++ ++obj-$(CONFIG_USB_MON) += mon/ ++ ++obj-$(CONFIG_PCI) += host/ ++obj-$(CONFIG_USB_EHCI_HCD) += host/ ++obj-$(CONFIG_USB_ISP116X_HCD) += host/ ++obj-$(CONFIG_USB_OHCI_HCD) += host/ ++obj-$(CONFIG_USB_UHCI_HCD) += host/ ++obj-$(CONFIG_USB_FHCI_HCD) += host/ ++obj-$(CONFIG_USB_XHCI_HCD) += host/ ++obj-$(CONFIG_USB_SL811_HCD) += host/ ++obj-$(CONFIG_USB_ISP1362_HCD) += host/ ++obj-$(CONFIG_USB_U132_HCD) += host/ ++obj-$(CONFIG_USB_R8A66597_HCD) += host/ ++obj-$(CONFIG_USB_HWA_HCD) += host/ ++obj-$(CONFIG_USB_ISP1760_HCD) += host/ ++ ++obj-$(CONFIG_USB_C67X00_HCD) += c67x00/ ++ ++obj-$(CONFIG_USB_WUSB) += wusbcore/ ++ ++obj-$(CONFIG_USB_ACM) += class/ ++obj-$(CONFIG_USB_PRINTER) += class/ ++obj-$(CONFIG_USB_WDM) += class/ ++obj-$(CONFIG_USB_TMC) += class/ ++ ++obj-$(CONFIG_USB_STORAGE) += storage/ ++obj-$(CONFIG_USB) += storage/ ++ ++obj-$(CONFIG_USB_MDC800) += image/ ++obj-$(CONFIG_USB_MICROTEK) += image/ ++ ++obj-$(CONFIG_USB_SERIAL) += serial/ ++ ++obj-$(CONFIG_USB) += misc/ ++obj-y += early/ ++ ++obj-$(CONFIG_USB_ATM) += atm/ ++obj-$(CONFIG_USB_SPEEDTOUCH) += atm/ +diff -Nur linux-2.6.32.orig/lib/klist.c linux-2.6.32/lib/klist.c +--- linux-2.6.32.orig/lib/klist.c 2009-12-03 04:51:21.000000000 +0100 ++++ linux-2.6.32/lib/klist.c 2010-01-10 13:41:59.326309689 +0100 @@ -60,7 +60,7 @@ { knode->n_klist = klist; |