[PATCH] sym53c500_cs PCMCIA SCSI driver (round 6)
From: Bob Tracy
Date: Mon May 10 2004 - 09:18:33 EST
Christoph Hellwig wrote:
> On Tue, May 04, 2004 at 01:04:51AM -0500, Bob Tracy wrote:
> > Support for additional sysfs class device attributes has been added:
> > two are read-only (irq, ioport),
>
> sorry to bother you again, but I don't think these belong into a scsi
> LLDD. it's attributes for the underlying bus. For pci you get these
> information already, but the pcmcia infrastructure isn't quite ready
> yet.
I saw the need :-), but agree that those attributes aren't a good fit
where they were placed. That code has been removed.
> > one is read-write (fast_pio). The
> > read-write attribute is a per-instance flag indicating the PIO speed
> > of the particular HBA: valid values are 1 (enabled -- default) and 0
> > (disabled).
>
> this one is nice.
Thanks. "Round 6" attached: the patch set applies cleanly to 2.6.5, and
possibly 2.6.6 (haven't tried it). If there's nothing else to be done,
let's push this upstream for 2.6.7.
--
-----------------------------------------------------------------------
Bob Tracy WTO + WIPO = DMCA? http://www.anti-dmca.org
rct@xxxxxxxx
-----------------------------------------------------------------------
--- linux/drivers/scsi/pcmcia/Kconfig.orig Fri Apr 16 16:00:41 2004
+++ linux/drivers/scsi/pcmcia/Kconfig Mon May 3 21:08:26 2004
@@ -69,4 +69,14 @@
To compile this driver as a module, choose M here: the
module will be called qlogic_cs.
+config PCMCIA_SYM53C500
+ tristate "Symbios 53c500 PCMCIA support"
+ depends on m
+ help
+ Say Y here if you have a New Media Bus Toaster or other PCMCIA
+ SCSI adapter based on the Symbios 53c500 controller.
+
+ To compile this driver as a module, choose M here: the
+ module will be called sym53c500_cs.
+
endmenu
--- linux/drivers/scsi/pcmcia/Makefile.orig Fri Apr 16 16:00:41 2004
+++ linux/drivers/scsi/pcmcia/Makefile Mon May 3 21:08:26 2004
@@ -6,6 +6,7 @@
obj-$(CONFIG_PCMCIA_FDOMAIN) += fdomain_cs.o
obj-$(CONFIG_PCMCIA_AHA152X) += aha152x_cs.o
obj-$(CONFIG_PCMCIA_NINJA_SCSI) += nsp_cs.o
+obj-$(CONFIG_PCMCIA_SYM53C500) += sym53c500_cs.o
aha152x_cs-objs := aha152x_stub.o aha152x_core.o
fdomain_cs-objs := fdomain_stub.o fdomain_core.o
--- linux/drivers/scsi/pcmcia/sym53c500_cs.c.orig Fri Apr 16 16:05:19 2004
+++ linux/drivers/scsi/pcmcia/sym53c500_cs.c Mon May 10 08:55:30 2004
@@ -0,0 +1,1042 @@
+/*
+* sym53c500_cs.c Bob Tracy (rct@xxxxxxxx)
+*
+* A rewrite of the pcmcia-cs add-on driver for newer (circa 1997)
+* New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic
+* 53c500 controller: intended for use with 2.6 and later kernels.
+* The pcmcia-cs add-on version of this driver is not supported
+* beyond 2.4. It consisted of three files with history/copyright
+* information as follows:
+*
+* SYM53C500.h
+* Bob Tracy (rct@xxxxxxxx)
+* Original by Tom Corner (tcorner@xxxxxx).
+* Adapted from NCR53c406a.h which is Copyrighted (C) 1994
+* Normunds Saumanis (normunds@xxxxxxxxxxxxxx)
+*
+* SYM53C500.c
+* Bob Tracy (rct@xxxxxxxx)
+* Original driver by Tom Corner (tcorner@xxxxxx) was adapted
+* from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996
+* Normunds Saumanis (normunds@xxxxxxxxxx)
+*
+* sym53c500.c
+* Bob Tracy (rct@xxxxxxxx)
+* Original by Tom Corner (tcorner@xxxxxx) was adapted from a
+* driver for the Qlogic SCSI card written by
+* David Hinds (dhinds@xxxxxxxxxxxxxxxxxxxx).
+*
+* This program is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License as published by the
+* Free Software Foundation; either version 2, or (at your option) any
+* later version.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* General Public License for more details.
+*/
+
+#define SYM53C500_DEBUG 0
+#define VERBOSE_SYM53C500_DEBUG 0
+
+/*
+* Set this to 0 if you encounter kernel lockups while transferring
+* data in PIO mode. Note this can be changed via "sysfs".
+*/
+#define USE_FAST_PIO 1
+
+/* =============== End of user configurable parameters ============== */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/blkdev.h>
+#include <linux/spinlock.h>
+#include <linux/bitops.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/irq.h>
+
+#include <scsi/scsi_ioctl.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/ciscode.h>
+
+/* ================================================================== */
+
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version =
+"sym53c500_cs.c 0.9b 2004/05/10 (Bob Tracy)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/* ================================================================== */
+
+/* Parameters that can be set with 'insmod' */
+
+/* Bit map of interrupts to choose from */
+static unsigned int irq_mask = 0xdeb8; /* 3, 6, 7, 9-12, 14, 15 */
+static int irq_list[4] = { -1 };
+static int num_irqs = 1;
+
+module_param(irq_mask, int, 0);
+MODULE_PARM_DESC(irq_mask, "IRQ mask bits (default: 0xdeb8)");
+module_param_array(irq_list, int, num_irqs, 0);
+MODULE_PARM_DESC(irq_list, "Comma-separated list of up to 4 IRQs to try (default: auto select).");
+
+/* ================================================================== */
+
+#define SYNC_MODE 0 /* Synchronous transfer mode */
+
+/* Default configuration */
+#define C1_IMG 0x07 /* ID=7 */
+#define C2_IMG 0x48 /* FE SCSI2 */
+#define C3_IMG 0x20 /* CDB */
+#define C4_IMG 0x04 /* ANE */
+#define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
+#define C7_IMG 0x80 /* added for SYM53C500 t. corner */
+
+/* Hardware Registers: offsets from io_port (base) */
+
+/* Control Register Set 0 */
+#define TC_LSB 0x00 /* transfer counter lsb */
+#define TC_MSB 0x01 /* transfer counter msb */
+#define SCSI_FIFO 0x02 /* scsi fifo register */
+#define CMD_REG 0x03 /* command register */
+#define STAT_REG 0x04 /* status register */
+#define DEST_ID 0x04 /* selection/reselection bus id */
+#define INT_REG 0x05 /* interrupt status register */
+#define SRTIMOUT 0x05 /* select/reselect timeout reg */
+#define SEQ_REG 0x06 /* sequence step register */
+#define SYNCPRD 0x06 /* synchronous transfer period */
+#define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
+#define SYNCOFF 0x07 /* synchronous offset register */
+#define CONFIG1 0x08 /* configuration register */
+#define CLKCONV 0x09 /* clock conversion register */
+/* #define TESTREG 0x0A */ /* test mode register */
+#define CONFIG2 0x0B /* configuration 2 register */
+#define CONFIG3 0x0C /* configuration 3 register */
+#define CONFIG4 0x0D /* configuration 4 register */
+#define TC_HIGH 0x0E /* transfer counter high */
+/* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
+
+/* Control Register Set 1 */
+/* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
+/* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
+/* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
+#define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
+/* #define PIO_FIFO1 0x05 */ /* */
+/* #define PIO_FIFO2 0x06 */ /* */
+/* #define PIO_FIFO3 0x07 */ /* */
+#define PIO_STATUS 0x08 /* PIO status (r/w) */
+/* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
+/* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
+#define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
+#define CONFIG5 0x09 /* configuration 5 register */
+/* #define SIGNATURE 0x0E */ /* signature register (r) */
+/* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
+#define CONFIG7 0x0d
+
+/* select register set 0 */
+#define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
+/* select register set 1 */
+#define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
+
+#if SYM53C500_DEBUG
+#define DEB(x) x
+#else
+#define DEB(x)
+#endif
+
+#if VERBOSE_SYM53C500_DEBUG
+#define VDEB(x) x
+#else
+#define VDEB(x)
+#endif
+
+#define LOAD_DMA_COUNT(x, count) \
+ outb(count & 0xff, (x) + TC_LSB); \
+ outb((count >> 8) & 0xff, (x) + TC_MSB); \
+ outb((count >> 16) & 0xff, (x) + TC_HIGH);
+
+/* Chip commands */
+#define DMA_OP 0x80
+
+#define SCSI_NOP 0x00
+#define FLUSH_FIFO 0x01
+#define CHIP_RESET 0x02
+#define SCSI_RESET 0x03
+#define RESELECT 0x40
+#define SELECT_NO_ATN 0x41
+#define SELECT_ATN 0x42
+#define SELECT_ATN_STOP 0x43
+#define ENABLE_SEL 0x44
+#define DISABLE_SEL 0x45
+#define SELECT_ATN3 0x46
+#define RESELECT3 0x47
+#define TRANSFER_INFO 0x10
+#define INIT_CMD_COMPLETE 0x11
+#define MSG_ACCEPT 0x12
+#define TRANSFER_PAD 0x18
+#define SET_ATN 0x1a
+#define RESET_ATN 0x1b
+#define SEND_MSG 0x20
+#define SEND_STATUS 0x21
+#define SEND_DATA 0x22
+#define DISCONN_SEQ 0x23
+#define TERMINATE_SEQ 0x24
+#define TARG_CMD_COMPLETE 0x25
+#define DISCONN 0x27
+#define RECV_MSG 0x28
+#define RECV_CMD 0x29
+#define RECV_DATA 0x2a
+#define RECV_CMD_SEQ 0x2b
+#define TARGET_ABORT_DMA 0x04
+
+/* ================================================================== */
+
+struct scsi_info_t {
+ dev_link_t link;
+ dev_node_t node;
+ struct Scsi_Host *host;
+ unsigned short manf_id;
+};
+
+/*
+* Repository for per-instance host data.
+*/
+struct sym53c500_data {
+ struct scsi_cmnd *current_SC;
+ int fast_pio;
+};
+
+enum Phase {
+ idle,
+ data_out,
+ data_in,
+ command_ph,
+ status_ph,
+ message_out,
+ message_in
+};
+
+/* ================================================================== */
+
+/*
+* Global (within this module) variables other than
+* sym53c500_driver_template (the scsi_host_template).
+*/
+static dev_link_t *dev_list;
+static dev_info_t dev_info = "sym53c500_cs";
+
+/* ================================================================== */
+
+static void
+chip_init(int io_port)
+{
+ REG1(io_port);
+ outb(0x01, io_port + PIO_STATUS);
+ outb(0x00, io_port + PIO_FLAG);
+
+ outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
+ outb(C3_IMG, io_port + CONFIG3);
+ outb(C2_IMG, io_port + CONFIG2);
+ outb(C1_IMG, io_port + CONFIG1);
+
+ outb(0x05, io_port + CLKCONV); /* clock conversion factor */
+ outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
+ outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
+ outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
+}
+
+static void
+SYM53C500_int_host_reset(int io_port)
+{
+ outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
+ outb(CHIP_RESET, io_port + CMD_REG);
+ outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
+ outb(SCSI_RESET, io_port + CMD_REG);
+ chip_init(io_port);
+}
+
+static __inline__ int
+SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
+{
+ int i;
+ int len; /* current scsi fifo size */
+
+ REG1(base);
+ while (reqlen) {
+ i = inb(base + PIO_STATUS);
+ /* VDEB(printk("pio_status=%x\n", i)); */
+ if (i & 0x80)
+ return 0;
+
+ switch (i & 0x1e) {
+ default:
+ case 0x10: /* fifo empty */
+ len = 0;
+ break;
+ case 0x0:
+ len = 1;
+ break;
+ case 0x8: /* fifo 1/3 full */
+ len = 42;
+ break;
+ case 0xc: /* fifo 2/3 full */
+ len = 84;
+ break;
+ case 0xe: /* fifo full */
+ len = 128;
+ break;
+ }
+
+ if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
+ return 0;
+ }
+
+ if (len) {
+ if (len > reqlen)
+ len = reqlen;
+
+ if (fast_pio && len > 3) {
+ insl(base + PIO_FIFO, request, len >> 2);
+ request += len & 0xfc;
+ reqlen -= len & 0xfc;
+ } else {
+ while (len--) {
+ *request++ = inb(base + PIO_FIFO);
+ reqlen--;
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+static __inline__ int
+SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
+{
+ int i = 0;
+ int len; /* current scsi fifo size */
+
+ REG1(base);
+ while (reqlen && !(i & 0x40)) {
+ i = inb(base + PIO_STATUS);
+ /* VDEB(printk("pio_status=%x\n", i)); */
+ if (i & 0x80) /* error */
+ return 0;
+
+ switch (i & 0x1e) {
+ case 0x10:
+ len = 128;
+ break;
+ case 0x0:
+ len = 84;
+ break;
+ case 0x8:
+ len = 42;
+ break;
+ case 0xc:
+ len = 1;
+ break;
+ default:
+ case 0xe:
+ len = 0;
+ break;
+ }
+
+ if (len) {
+ if (len > reqlen)
+ len = reqlen;
+
+ if (fast_pio && len > 3) {
+ outsl(base + PIO_FIFO, request, len >> 2);
+ request += len & 0xfc;
+ reqlen -= len & 0xfc;
+ } else {
+ while (len--) {
+ outb(*request++, base + PIO_FIFO);
+ reqlen--;
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+static irqreturn_t
+SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs)
+{
+ unsigned long flags;
+ struct Scsi_Host *dev = dev_id;
+ DEB(unsigned char fifo_size;)
+ DEB(unsigned char seq_reg;)
+ unsigned char status, int_reg;
+ unsigned char pio_status;
+ struct scatterlist *sglist;
+ unsigned int sgcount;
+ int port_base = dev->io_port;
+ struct sym53c500_data *data =
+ (struct sym53c500_data *)dev->hostdata;
+ struct scsi_cmnd *curSC = data->current_SC;
+ int fast_pio = data->fast_pio;
+
+ spin_lock_irqsave(dev->host_lock, flags);
+
+ VDEB(printk("SYM53C500_intr called\n"));
+
+ REG1(port_base);
+ pio_status = inb(port_base + PIO_STATUS);
+ REG0(port_base);
+ status = inb(port_base + STAT_REG);
+ DEB(seq_reg = inb(port_base + SEQ_REG));
+ int_reg = inb(port_base + INT_REG);
+ DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
+
+#if SYM53C500_DEBUG
+ printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
+ status, seq_reg, int_reg, fifo_size);
+ printk(", pio=%02x\n", pio_status);
+#endif /* SYM53C500_DEBUG */
+
+ if (int_reg & 0x80) { /* SCSI reset intr */
+ DEB(printk("SYM53C500: reset intr received\n"));
+ curSC->result = DID_RESET << 16;
+ goto idle_out;
+ }
+
+ if (pio_status & 0x80) {
+ printk("SYM53C500: Warning: PIO error!\n");
+ curSC->result = DID_ERROR << 16;
+ goto idle_out;
+ }
+
+ if (status & 0x20) { /* Parity error */
+ printk("SYM53C500: Warning: parity error!\n");
+ curSC->result = DID_PARITY << 16;
+ goto idle_out;
+ }
+
+ if (status & 0x40) { /* Gross error */
+ printk("SYM53C500: Warning: gross error!\n");
+ curSC->result = DID_ERROR << 16;
+ goto idle_out;
+ }
+
+ if (int_reg & 0x20) { /* Disconnect */
+ DEB(printk("SYM53C500: disconnect intr received\n"));
+ if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
+ curSC->result = DID_NO_CONNECT << 16;
+ } else { /* Command complete, return status and message */
+ curSC->result = (curSC->SCp.Status & 0xff)
+ | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
+ }
+ goto idle_out;
+ }
+
+ switch (status & 0x07) { /* scsi phase */
+ case 0x00: /* DATA-OUT */
+ if (int_reg & 0x10) { /* Target requesting info transfer */
+ curSC->SCp.phase = data_out;
+ VDEB(printk("SYM53C500: Data-Out phase\n"));
+ outb(FLUSH_FIFO, port_base + CMD_REG);
+ LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
+ outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
+ if (!curSC->use_sg) /* Don't use scatter-gather */
+ SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
+ else { /* use scatter-gather */
+ sgcount = curSC->use_sg;
+ sglist = curSC->request_buffer;
+ while (sgcount--) {
+ SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
+ sglist++;
+ }
+ }
+ REG0(port_base);
+ }
+ break;
+
+ case 0x01: /* DATA-IN */
+ if (int_reg & 0x10) { /* Target requesting info transfer */
+ curSC->SCp.phase = data_in;
+ VDEB(printk("SYM53C500: Data-In phase\n"));
+ outb(FLUSH_FIFO, port_base + CMD_REG);
+ LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
+ outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
+ if (!curSC->use_sg) /* Don't use scatter-gather */
+ SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
+ else { /* Use scatter-gather */
+ sgcount = curSC->use_sg;
+ sglist = curSC->request_buffer;
+ while (sgcount--) {
+ SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
+ sglist++;
+ }
+ }
+ REG0(port_base);
+ }
+ break;
+
+ case 0x02: /* COMMAND */
+ curSC->SCp.phase = command_ph;
+ printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
+ break;
+
+ case 0x03: /* STATUS */
+ curSC->SCp.phase = status_ph;
+ VDEB(printk("SYM53C500: Status phase\n"));
+ outb(FLUSH_FIFO, port_base + CMD_REG);
+ outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
+ break;
+
+ case 0x04: /* Reserved */
+ case 0x05: /* Reserved */
+ printk("SYM53C500: WARNING: Reserved phase!!!\n");
+ break;
+
+ case 0x06: /* MESSAGE-OUT */
+ DEB(printk("SYM53C500: Message-Out phase\n"));
+ curSC->SCp.phase = message_out;
+ outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
+ outb(MSG_ACCEPT, port_base + CMD_REG);
+ break;
+
+ case 0x07: /* MESSAGE-IN */
+ VDEB(printk("SYM53C500: Message-In phase\n"));
+ curSC->SCp.phase = message_in;
+
+ curSC->SCp.Status = inb(port_base + SCSI_FIFO);
+ curSC->SCp.Message = inb(port_base + SCSI_FIFO);
+
+ VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
+ DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
+
+ if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
+ outb(SET_ATN, port_base + CMD_REG); /* Reject message */
+ DEB(printk("Discarding SAVE_POINTERS message\n"));
+ }
+ outb(MSG_ACCEPT, port_base + CMD_REG);
+ break;
+ }
+out:
+ spin_unlock_irqrestore(dev->host_lock, flags);
+ return IRQ_HANDLED;
+
+idle_out:
+ curSC->SCp.phase = idle;
+ curSC->scsi_done(curSC);
+ goto out;
+}
+
+static void
+SYM53C500_release(dev_link_t *link)
+{
+ struct scsi_info_t *info = link->priv;
+ struct Scsi_Host *shost = info->host;
+
+ DEBUG(0, "SYM53C500_release(0x%p)\n", link);
+
+ /*
+ * Do this before releasing/freeing resources.
+ */
+ scsi_remove_host(shost);
+
+ /*
+ * Interrupts getting hosed on card removal. Try
+ * the following code, mostly from qlogicfas.c.
+ */
+ if (shost->irq)
+ free_irq(shost->irq, shost);
+ if (shost->dma_channel != 0xff)
+ free_dma(shost->dma_channel);
+ if (shost->io_port && shost->n_io_port)
+ release_region(shost->io_port, shost->n_io_port);
+
+ link->dev = NULL;
+
+ pcmcia_release_configuration(link->handle);
+ pcmcia_release_io(link->handle, &link->io);
+ pcmcia_release_irq(link->handle, &link->irq);
+
+ link->state &= ~DEV_CONFIG;
+
+ scsi_host_put(shost);
+} /* SYM53C500_release */
+
+static const char*
+SYM53C500_info(struct Scsi_Host *SChost)
+{
+ static char info_msg[256];
+ struct sym53c500_data *data =
+ (struct sym53c500_data *)SChost->hostdata;
+
+ DEB(printk("SYM53C500_info called\n"));
+ (void)snprintf(info_msg, sizeof(info_msg),
+ "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
+ SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
+ return (info_msg);
+}
+
+static int
+SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
+{
+ int i;
+ int port_base = SCpnt->device->host->io_port;
+ struct sym53c500_data *data =
+ (struct sym53c500_data *)SCpnt->device->host->hostdata;
+
+ VDEB(printk("SYM53C500_queue called\n"));
+
+ DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
+ SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
+ SCpnt->device->lun, SCpnt->request_bufflen));
+
+ VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
+ printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
+ VDEB(printk("\n"));
+
+ data->current_SC = SCpnt;
+ data->current_SC->scsi_done = done;
+ data->current_SC->SCp.phase = command_ph;
+ data->current_SC->SCp.Status = 0;
+ data->current_SC->SCp.Message = 0;
+
+ /* We are locked here already by the mid layer */
+ REG0(port_base);
+ outb(SCpnt->device->id, port_base + DEST_ID); /* set destination */
+ outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
+
+ for (i = 0; i < SCpnt->cmd_len; i++) {
+ outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
+ }
+ outb(SELECT_NO_ATN, port_base + CMD_REG);
+
+ return 0;
+}
+
+static int
+SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
+{
+ int port_base = SCpnt->device->host->io_port;
+
+ DEB(printk("SYM53C500_host_reset called\n"));
+ SYM53C500_int_host_reset(port_base);
+
+ return SUCCESS;
+}
+
+static int
+SYM53C500_biosparm(struct scsi_device *disk,
+ struct block_device *dev,
+ sector_t capacity, int *info_array)
+{
+ int size;
+
+ DEB(printk("SYM53C500_biosparm called\n"));
+
+ size = capacity;
+ info_array[0] = 64; /* heads */
+ info_array[1] = 32; /* sectors */
+ info_array[2] = size >> 11; /* cylinders */
+ if (info_array[2] > 1024) { /* big disk */
+ info_array[0] = 255;
+ info_array[1] = 63;
+ info_array[2] = size / (255 * 63);
+ }
+ return 0;
+}
+
+static ssize_t
+SYM53C500_show_pio(struct class_device *cdev, char *buf)
+{
+ struct Scsi_Host *SHp = class_to_shost(cdev);
+ struct sym53c500_data *data =
+ (struct sym53c500_data *)SHp->hostdata;
+
+ return snprintf(buf, 4, "%d\n", data->fast_pio);
+}
+
+static ssize_t
+SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count)
+{
+ int pio;
+ struct Scsi_Host *SHp = class_to_shost(cdev);
+ struct sym53c500_data *data =
+ (struct sym53c500_data *)SHp->hostdata;
+
+ pio = simple_strtoul(buf, NULL, 0);
+ if (pio == 0 || pio == 1) {
+ data->fast_pio = pio;
+ return count;
+ }
+ else
+ return -EINVAL;
+}
+
+/*
+* SCSI HBA device attributes we want to
+* make available via sysfs.
+*/
+static struct class_device_attribute SYM53C500_pio_attr = {
+ .attr = {
+ .name = "fast_pio",
+ .mode = (S_IRUGO | S_IWUSR),
+ },
+ .show = SYM53C500_show_pio,
+ .store = SYM53C500_store_pio,
+};
+
+static struct class_device_attribute *SYM53C500_shost_attrs[] = {
+ &SYM53C500_pio_attr,
+ NULL,
+};
+
+/*
+* scsi_host_template initializer
+*/
+static struct scsi_host_template sym53c500_driver_template = {
+ .module = THIS_MODULE,
+ .name = "SYM53C500",
+ .info = SYM53C500_info,
+ .queuecommand = SYM53C500_queue,
+ .eh_host_reset_handler = SYM53C500_host_reset,
+ .bios_param = SYM53C500_biosparm,
+ .proc_name = "SYM53C500",
+ .can_queue = 1,
+ .this_id = 7,
+ .sg_tablesize = 32,
+ .cmd_per_lun = 1,
+ .use_clustering = ENABLE_CLUSTERING,
+ .shost_attrs = SYM53C500_shost_attrs
+};
+
+#define CS_CHECK(fn, ret) \
+do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+
+static void
+SYM53C500_config(dev_link_t *link)
+{
+ client_handle_t handle = link->handle;
+ struct scsi_info_t *info = link->priv;
+ tuple_t tuple;
+ cisparse_t parse;
+ int i, last_ret, last_fn;
+ int irq_level, port_base;
+ unsigned short tuple_data[32];
+ struct Scsi_Host *host;
+ struct scsi_host_template *tpnt = &sym53c500_driver_template;
+ struct sym53c500_data *data;
+
+ DEBUG(0, "SYM53C500_config(0x%p)\n", link);
+
+ tuple.TupleData = (cisdata_t *)tuple_data;
+ tuple.TupleDataMax = 64;
+ tuple.TupleOffset = 0;
+ tuple.DesiredTuple = CISTPL_CONFIG;
+ CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+ CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+ CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+ link->conf.ConfigBase = parse.config.base;
+
+ tuple.DesiredTuple = CISTPL_MANFID;
+ if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
+ (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS))
+ info->manf_id = le16_to_cpu(tuple.TupleData[0]);
+
+ /* Configure card */
+ link->state |= DEV_CONFIG;
+
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+ while (1) {
+ if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
+ pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
+ goto next_entry;
+ link->conf.ConfigIndex = parse.cftable_entry.index;
+ link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
+ link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
+
+ if (link->io.BasePort1 != 0) {
+ i = pcmcia_request_io(handle, &link->io);
+ if (i == CS_SUCCESS)
+ break;
+ }
+next_entry:
+ CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
+ }
+
+ CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
+ CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
+
+ /*
+ * That's the trouble with copying liberally from another driver.
+ * Some things probably aren't relevant, and I suspect this entire
+ * section dealing with manufacturer IDs can be scrapped. --rct
+ */
+ if ((info->manf_id == MANFID_MACNICA) ||
+ (info->manf_id == MANFID_PIONEER) ||
+ (info->manf_id == 0x0098)) {
+ /* set ATAcmd */
+ outb(0xb4, link->io.BasePort1 + 0xd);
+ outb(0x24, link->io.BasePort1 + 0x9);
+ outb(0x04, link->io.BasePort1 + 0xd);
+ }
+
+ /*
+ * irq_level == 0 implies tpnt->can_queue == 0, which
+ * is not supported in 2.6. Thus, only irq_level > 0
+ * will be allowed.
+ *
+ * Possible port_base values are as follows:
+ *
+ * 0x130, 0x230, 0x280, 0x290,
+ * 0x320, 0x330, 0x340, 0x350
+ */
+ port_base = link->io.BasePort1;
+ irq_level = link->irq.AssignedIRQ;
+
+ DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
+ port_base, irq_level, USE_FAST_PIO);)
+
+ chip_init(port_base);
+
+ host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
+ if (!host) {
+ printk("SYM53C500: Unable to register host, giving up.\n");
+ goto err_release;
+ }
+
+ data = (struct sym53c500_data *)host->hostdata;
+
+ if (irq_level > 0) {
+ if (request_irq(irq_level, SYM53C500_intr, 0, "SYM53C500", host)) {
+ printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
+ goto err_free_scsi;
+ }
+ DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
+ } else if (irq_level == 0) {
+ DEB(printk("SYM53C500: No interrupts detected\n"));
+ goto err_free_scsi;
+ } else {
+ DEB(printk("SYM53C500: Shouldn't get here!\n"));
+ goto err_free_scsi;
+ }
+
+ host->unique_id = port_base;
+ host->irq = irq_level;
+ host->io_port = port_base;
+ host->n_io_port = 0x10;
+ host->dma_channel = -1;
+
+ /*
+ * Note fast_pio is set to USE_FAST_PIO by
+ * default, but can be changed via "sysfs".
+ */
+ data->fast_pio = USE_FAST_PIO;
+
+ sprintf(info->node.dev_name, "scsi%d", host->host_no);
+ link->dev = &info->node;
+ info->host = host;
+
+ if (scsi_add_host(host, NULL))
+ goto err_free_irq;
+
+ scsi_scan_host(host);
+
+ goto out; /* SUCCESS */
+
+err_free_irq:
+ free_irq(irq_level, host);
+err_free_scsi:
+ scsi_host_put(host);
+err_release:
+ release_region(port_base, 0x10);
+ printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
+
+out:
+ link->state &= ~DEV_CONFIG_PENDING;
+ return;
+
+cs_failed:
+ cs_error(link->handle, last_fn, last_ret);
+ SYM53C500_release(link);
+ return;
+} /* SYM53C500_config */
+
+static int
+SYM53C500_event(event_t event, int priority, event_callback_args_t *args)
+{
+ dev_link_t *link = args->client_data;
+ struct scsi_info_t *info = link->priv;
+
+ DEBUG(1, "SYM53C500_event(0x%06x)\n", event);
+
+ switch (event) {
+ case CS_EVENT_CARD_REMOVAL:
+ link->state &= ~DEV_PRESENT;
+ if (link->state & DEV_CONFIG)
+ SYM53C500_release(link);
+ break;
+ case CS_EVENT_CARD_INSERTION:
+ link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+ SYM53C500_config(link);
+ break;
+ case CS_EVENT_PM_SUSPEND:
+ link->state |= DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_RESET_PHYSICAL:
+ if (link->state & DEV_CONFIG)
+ pcmcia_release_configuration(link->handle);
+ break;
+ case CS_EVENT_PM_RESUME:
+ link->state &= ~DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_CARD_RESET:
+ if (link->state & DEV_CONFIG) {
+ pcmcia_request_configuration(link->handle, &link->conf);
+ /* See earlier comment about manufacturer IDs. */
+ if ((info->manf_id == MANFID_MACNICA) ||
+ (info->manf_id == MANFID_PIONEER) ||
+ (info->manf_id == 0x0098)) {
+ outb(0x80, link->io.BasePort1 + 0xd);
+ outb(0x24, link->io.BasePort1 + 0x9);
+ outb(0x04, link->io.BasePort1 + 0xd);
+ }
+ /*
+ * If things don't work after a "resume",
+ * this is a good place to start looking.
+ */
+ SYM53C500_int_host_reset(link->io.BasePort1);
+ }
+ break;
+ }
+ return 0;
+} /* SYM53C500_event */
+
+static void
+SYM53C500_detach(dev_link_t *link)
+{
+ dev_link_t **linkp;
+
+ DEBUG(0, "SYM53C500_detach(0x%p)\n", link);
+
+ /* Locate device structure */
+ for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+ if (*linkp == link)
+ break;
+ if (*linkp == NULL)
+ return;
+
+ if (link->state & DEV_CONFIG)
+ SYM53C500_release(link);
+
+ if (link->handle)
+ pcmcia_deregister_client(link->handle);
+
+ /* Unlink device structure, free bits. */
+ *linkp = link->next;
+ kfree(link->priv);
+ link->priv = NULL;
+} /* SYM53C500_detach */
+
+static dev_link_t *
+SYM53C500_attach(void)
+{
+ struct scsi_info_t *info;
+ client_reg_t client_reg;
+ dev_link_t *link;
+ int i, ret;
+
+ DEBUG(0, "SYM53C500_attach()\n");
+
+ /* Create new SCSI device */
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return NULL;
+ memset(info, 0, sizeof(*info));
+ link = &info->link;
+ link->priv = info;
+ link->io.NumPorts1 = 16;
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+ link->io.IOAddrLines = 10;
+ link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+ link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
+ if (irq_list[0] == -1)
+ link->irq.IRQInfo2 = irq_mask;
+ else
+ for (i = 0; i < 4; i++)
+ link->irq.IRQInfo2 |= 1 << irq_list[i];
+ link->conf.Attributes = CONF_ENABLE_IRQ;
+ link->conf.Vcc = 50;
+ link->conf.IntType = INT_MEMORY_AND_IO;
+ link->conf.Present = PRESENT_OPTION;
+
+ /* Register with Card Services */
+ link->next = dev_list;
+ dev_list = link;
+ client_reg.dev_info = &dev_info;
+ client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
+ client_reg.event_handler = &SYM53C500_event;
+ client_reg.EventMask = CS_EVENT_RESET_REQUEST | CS_EVENT_CARD_RESET |
+ CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+ CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+ client_reg.Version = 0x0210;
+ client_reg.event_callback_args.client_data = link;
+ ret = pcmcia_register_client(&link->handle, &client_reg);
+ if (ret != 0) {
+ cs_error(link->handle, RegisterClient, ret);
+ SYM53C500_detach(link);
+ return NULL;
+ }
+
+ return link;
+} /* SYM53C500_attach */
+
+MODULE_AUTHOR("Bob Tracy <rct@xxxxxxxx>");
+MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
+MODULE_LICENSE("GPL");
+
+static struct pcmcia_driver sym53c500_cs_driver = {
+ .owner = THIS_MODULE,
+ .drv = {
+ .name = "sym53c500_cs",
+ },
+ .attach = SYM53C500_attach,
+ .detach = SYM53C500_detach,
+};
+
+static int __init
+init_sym53c500_cs(void)
+{
+ return pcmcia_register_driver(&sym53c500_cs_driver);
+}
+
+static void __exit
+exit_sym53c500_cs(void)
+{
+ pcmcia_unregister_driver(&sym53c500_cs_driver);
+}
+
+module_init(init_sym53c500_cs);
+module_exit(exit_sym53c500_cs);
--- linux/Documentation/scsi/sym53c500_cs.txt.orig Fri Apr 16 16:06:19 2004
+++ linux/Documentation/scsi/sym53c500_cs.txt Mon May 3 21:08:26 2004
@@ -0,0 +1,23 @@
+The sym53c500_cs driver originated as an add-on to David Hinds' pcmcia-cs
+package, and was written by Tom Corner (tcorner@xxxxxx). A rewrite was
+long overdue, and the current version addresses the following concerns:
+
+ (1) extensive kernel changes between 2.4 and 2.6.
+ (2) deprecated PCMCIA support outside the kernel.
+
+All the USE_BIOS code has been ripped out. It was never used, and could
+not have worked anyway. The USE_DMA code is likewise gone. Many thanks
+to YOKOTA Hiroshi (nsp_cs driver) and David Hinds (qlogic_cs driver) for
+the code fragments I shamelessly adapted for this work. Thanks also to
+Christoph Hellwig for his patient tutelage while I stumbled about.
+
+The Symbios Logic 53c500 chip was used in the "newer" (circa 1997) version
+of the New Media Bus Toaster PCMCIA SCSI controller. Presumably there are
+other products using this chip, but I've never laid eyes (much less hands)
+on one.
+
+Through the years, there have been a number of downloads of the pcmcia-cs
+version of this driver, and I guess it worked for those users. It worked
+for Tom Corner, and it works for me. Your mileage will probably vary.
+
+--Bob Tracy (rct@xxxxxxxx)
--- linux/Documentation/scsi/00-INDEX.orig Fri Apr 16 16:07:11 2004
+++ linux/Documentation/scsi/00-INDEX Mon May 3 21:08:26 2004
@@ -62,6 +62,8 @@
- info on API between SCSI layer and low level drivers
st.txt
- info on scsi tape driver
+sym53c500_cs.txt
+ - info on PCMCIA driver for Symbios Logic 53c500 based adapters
sym53c8xx_2.txt
- info on second generation driver for sym53c8xx based adapters
tmscsim.txt