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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/scsi/sym53c8xx_2/sym_glue.c
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/scsi/sym53c8xx_2/sym_glue.c')
-rw-r--r--drivers/scsi/sym53c8xx_2/sym_glue.c2196
1 files changed, 2196 insertions, 0 deletions
diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c
new file mode 100644
index 00000000000..a1dff6d437b
--- /dev/null
+++ b/drivers/scsi/sym53c8xx_2/sym_glue.c
@@ -0,0 +1,2196 @@
+/*
+ * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
+ * of PCI-SCSI IO processors.
+ *
+ * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
+ * Copyright (c) 2003-2005 Matthew Wilcox <matthew@wil.cx>
+ *
+ * This driver is derived from the Linux sym53c8xx driver.
+ * Copyright (C) 1998-2000 Gerard Roudier
+ *
+ * The sym53c8xx driver is derived from the ncr53c8xx driver that had been
+ * a port of the FreeBSD ncr driver to Linux-1.2.13.
+ *
+ * The original ncr driver has been written for 386bsd and FreeBSD by
+ * Wolfgang Stanglmeier <wolf@cologne.de>
+ * Stefan Esser <se@mi.Uni-Koeln.de>
+ * Copyright (C) 1994 Wolfgang Stanglmeier
+ *
+ * Other major contributions:
+ *
+ * NVRAM detection and reading.
+ * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
+ *
+ *-----------------------------------------------------------------------------
+ *
+ * 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 of the License, 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/ctype.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/spinlock.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_transport.h>
+
+#include "sym_glue.h"
+#include "sym_nvram.h"
+
+#define NAME53C "sym53c"
+#define NAME53C8XX "sym53c8xx"
+
+/* SPARC just has to be different ... */
+#ifdef __sparc__
+#define IRQ_FMT "%s"
+#define IRQ_PRM(x) __irq_itoa(x)
+#else
+#define IRQ_FMT "%d"
+#define IRQ_PRM(x) (x)
+#endif
+
+struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP;
+unsigned int sym_debug_flags = 0;
+
+static char *excl_string;
+static char *safe_string;
+module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0);
+module_param_string(tag_ctrl, sym_driver_setup.tag_ctrl, 100, 0);
+module_param_named(burst, sym_driver_setup.burst_order, byte, 0);
+module_param_named(led, sym_driver_setup.scsi_led, byte, 0);
+module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0);
+module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0);
+module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0);
+module_param_named(hostid, sym_driver_setup.host_id, byte, 0);
+module_param_named(verb, sym_driver_setup.verbose, byte, 0);
+module_param_named(debug, sym_debug_flags, uint, 0);
+module_param_named(settle, sym_driver_setup.settle_delay, byte, 0);
+module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0);
+module_param_named(excl, excl_string, charp, 0);
+module_param_named(safe, safe_string, charp, 0);
+
+MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default");
+MODULE_PARM_DESC(tag_ctrl, "More detailed control over tags per LUN");
+MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers");
+MODULE_PARM_DESC(led, "Set to 1 to enable LED support");
+MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3");
+MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole");
+MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error");
+MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters");
+MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive");
+MODULE_PARM_DESC(debug, "Set bits to enable debugging");
+MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3");
+MODULE_PARM_DESC(nvram, "Option currently not used");
+MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached");
+MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\"");
+
+MODULE_LICENSE("GPL");
+MODULE_VERSION(SYM_VERSION);
+MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>");
+MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters");
+
+static void sym2_setup_params(void)
+{
+ char *p = excl_string;
+ int xi = 0;
+
+ while (p && (xi < 8)) {
+ char *next_p;
+ int val = (int) simple_strtoul(p, &next_p, 0);
+ sym_driver_setup.excludes[xi++] = val;
+ p = next_p;
+ }
+
+ if (safe_string) {
+ if (*safe_string == 'y') {
+ sym_driver_setup.max_tag = 0;
+ sym_driver_setup.burst_order = 0;
+ sym_driver_setup.scsi_led = 0;
+ sym_driver_setup.scsi_diff = 1;
+ sym_driver_setup.irq_mode = 0;
+ sym_driver_setup.scsi_bus_check = 2;
+ sym_driver_setup.host_id = 7;
+ sym_driver_setup.verbose = 2;
+ sym_driver_setup.settle_delay = 10;
+ sym_driver_setup.use_nvram = 1;
+ } else if (*safe_string != 'n') {
+ printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s"
+ " passed to safe option", safe_string);
+ }
+ }
+}
+
+/*
+ * We used to try to deal with 64-bit BARs here, but don't any more.
+ * There are many parts of this driver which would need to be modified
+ * to handle a 64-bit base address, including scripts. I'm uncomfortable
+ * with making those changes when I have no way of testing it, so I'm
+ * just going to disable it.
+ *
+ * Note that some machines (eg HP rx8620 and Superdome) have bus addresses
+ * below 4GB and physical addresses above 4GB. These will continue to work.
+ */
+static int __devinit
+pci_get_base_address(struct pci_dev *pdev, int index, unsigned long *basep)
+{
+ u32 tmp;
+ unsigned long base;
+#define PCI_BAR_OFFSET(index) (PCI_BASE_ADDRESS_0 + (index<<2))
+
+ pci_read_config_dword(pdev, PCI_BAR_OFFSET(index++), &tmp);
+ base = tmp;
+ if ((tmp & 0x7) == PCI_BASE_ADDRESS_MEM_TYPE_64) {
+ pci_read_config_dword(pdev, PCI_BAR_OFFSET(index++), &tmp);
+ if (tmp > 0)
+ dev_err(&pdev->dev,
+ "BAR %d is 64-bit, disabling\n", index - 1);
+ base = 0;
+ }
+
+ if ((base & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO) {
+ base &= PCI_BASE_ADDRESS_IO_MASK;
+ } else {
+ base &= PCI_BASE_ADDRESS_MEM_MASK;
+ }
+
+ *basep = base;
+ return index;
+#undef PCI_BAR_OFFSET
+}
+
+static struct scsi_transport_template *sym2_transport_template = NULL;
+
+/*
+ * Used by the eh thread to wait for command completion.
+ * It is allocated on the eh thread stack.
+ */
+struct sym_eh_wait {
+ struct completion done;
+ struct timer_list timer;
+ void (*old_done)(struct scsi_cmnd *);
+ int to_do;
+ int timed_out;
+};
+
+/*
+ * Driver private area in the SCSI command structure.
+ */
+struct sym_ucmd { /* Override the SCSI pointer structure */
+ dma_addr_t data_mapping;
+ u_char data_mapped;
+ struct sym_eh_wait *eh_wait;
+};
+
+#define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
+#define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
+
+static void __unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
+{
+ int dma_dir = cmd->sc_data_direction;
+
+ switch(SYM_UCMD_PTR(cmd)->data_mapped) {
+ case 2:
+ pci_unmap_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
+ break;
+ case 1:
+ pci_unmap_single(pdev, SYM_UCMD_PTR(cmd)->data_mapping,
+ cmd->request_bufflen, dma_dir);
+ break;
+ }
+ SYM_UCMD_PTR(cmd)->data_mapped = 0;
+}
+
+static dma_addr_t __map_scsi_single_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
+{
+ dma_addr_t mapping;
+ int dma_dir = cmd->sc_data_direction;
+
+ mapping = pci_map_single(pdev, cmd->request_buffer,
+ cmd->request_bufflen, dma_dir);
+ if (mapping) {
+ SYM_UCMD_PTR(cmd)->data_mapped = 1;
+ SYM_UCMD_PTR(cmd)->data_mapping = mapping;
+ }
+
+ return mapping;
+}
+
+static int __map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
+{
+ int use_sg;
+ int dma_dir = cmd->sc_data_direction;
+
+ use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
+ if (use_sg > 0) {
+ SYM_UCMD_PTR(cmd)->data_mapped = 2;
+ SYM_UCMD_PTR(cmd)->data_mapping = use_sg;
+ }
+
+ return use_sg;
+}
+
+#define unmap_scsi_data(np, cmd) \
+ __unmap_scsi_data(np->s.device, cmd)
+#define map_scsi_single_data(np, cmd) \
+ __map_scsi_single_data(np->s.device, cmd)
+#define map_scsi_sg_data(np, cmd) \
+ __map_scsi_sg_data(np->s.device, cmd)
+/*
+ * Complete a pending CAM CCB.
+ */
+void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd)
+{
+ unmap_scsi_data(np, cmd);
+ cmd->scsi_done(cmd);
+}
+
+static void sym_xpt_done2(struct sym_hcb *np, struct scsi_cmnd *cmd, int cam_status)
+{
+ sym_set_cam_status(cmd, cam_status);
+ sym_xpt_done(np, cmd);
+}
+
+
+/*
+ * Tell the SCSI layer about a BUS RESET.
+ */
+void sym_xpt_async_bus_reset(struct sym_hcb *np)
+{
+ printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np));
+ np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ;
+ np->s.settle_time_valid = 1;
+ if (sym_verbose >= 2)
+ printf_info("%s: command processing suspended for %d seconds\n",
+ sym_name(np), sym_driver_setup.settle_delay);
+}
+
+/*
+ * Tell the SCSI layer about a BUS DEVICE RESET message sent.
+ */
+void sym_xpt_async_sent_bdr(struct sym_hcb *np, int target)
+{
+ printf_notice("%s: TARGET %d has been reset.\n", sym_name(np), target);
+}
+
+/*
+ * Choose the more appropriate CAM status if
+ * the IO encountered an extended error.
+ */
+static int sym_xerr_cam_status(int cam_status, int x_status)
+{
+ if (x_status) {
+ if (x_status & XE_PARITY_ERR)
+ cam_status = DID_PARITY;
+ else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN))
+ cam_status = DID_ERROR;
+ else if (x_status & XE_BAD_PHASE)
+ cam_status = DID_ERROR;
+ else
+ cam_status = DID_ERROR;
+ }
+ return cam_status;
+}
+
+/*
+ * Build CAM result for a failed or auto-sensed IO.
+ */
+void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid)
+{
+ struct scsi_cmnd *cmd = cp->cmd;
+ u_int cam_status, scsi_status, drv_status;
+
+ drv_status = 0;
+ cam_status = DID_OK;
+ scsi_status = cp->ssss_status;
+
+ if (cp->host_flags & HF_SENSE) {
+ scsi_status = cp->sv_scsi_status;
+ resid = cp->sv_resid;
+ if (sym_verbose && cp->sv_xerr_status)
+ sym_print_xerr(cmd, cp->sv_xerr_status);
+ if (cp->host_status == HS_COMPLETE &&
+ cp->ssss_status == S_GOOD &&
+ cp->xerr_status == 0) {
+ cam_status = sym_xerr_cam_status(DID_OK,
+ cp->sv_xerr_status);
+ drv_status = DRIVER_SENSE;
+ /*
+ * Bounce back the sense data to user.
+ */
+ memset(&cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
+ memcpy(cmd->sense_buffer, cp->sns_bbuf,
+ min(sizeof(cmd->sense_buffer),
+ (size_t)SYM_SNS_BBUF_LEN));
+#if 0
+ /*
+ * If the device reports a UNIT ATTENTION condition
+ * due to a RESET condition, we should consider all
+ * disconnect CCBs for this unit as aborted.
+ */
+ if (1) {
+ u_char *p;
+ p = (u_char *) cmd->sense_data;
+ if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29)
+ sym_clear_tasks(np, DID_ABORT,
+ cp->target,cp->lun, -1);
+ }
+#endif
+ } else {
+ /*
+ * Error return from our internal request sense. This
+ * is bad: we must clear the contingent allegiance
+ * condition otherwise the device will always return
+ * BUSY. Use a big stick.
+ */
+ sym_reset_scsi_target(np, cmd->device->id);
+ cam_status = DID_ERROR;
+ }
+ } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */
+ cam_status = DID_OK;
+ else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */
+ cam_status = DID_NO_CONNECT;
+ else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/
+ cam_status = DID_ERROR;
+ else { /* Extended error */
+ if (sym_verbose) {
+ sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n",
+ cp->host_status, cp->ssss_status,
+ cp->xerr_status);
+ }
+ /*
+ * Set the most appropriate value for CAM status.
+ */
+ cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status);
+ }
+ cmd->resid = resid;
+ cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status;
+}
+
+
+/*
+ * Build the scatter/gather array for an I/O.
+ */
+
+static int sym_scatter_no_sglist(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd)
+{
+ struct sym_tblmove *data = &cp->phys.data[SYM_CONF_MAX_SG-1];
+ int segment;
+
+ cp->data_len = cmd->request_bufflen;
+
+ if (cmd->request_bufflen) {
+ dma_addr_t baddr = map_scsi_single_data(np, cmd);
+ if (baddr) {
+ sym_build_sge(np, data, baddr, cmd->request_bufflen);
+ segment = 1;
+ } else {
+ segment = -2;
+ }
+ } else {
+ segment = 0;
+ }
+
+ return segment;
+}
+
+static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd)
+{
+ int segment;
+ int use_sg = (int) cmd->use_sg;
+
+ cp->data_len = 0;
+
+ if (!use_sg)
+ segment = sym_scatter_no_sglist(np, cp, cmd);
+ else if ((use_sg = map_scsi_sg_data(np, cmd)) > 0) {
+ struct scatterlist *scatter = (struct scatterlist *)cmd->buffer;
+ struct sym_tblmove *data;
+
+ if (use_sg > SYM_CONF_MAX_SG) {
+ unmap_scsi_data(np, cmd);
+ return -1;
+ }
+
+ data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg];
+
+ for (segment = 0; segment < use_sg; segment++) {
+ dma_addr_t baddr = sg_dma_address(&scatter[segment]);
+ unsigned int len = sg_dma_len(&scatter[segment]);
+
+ sym_build_sge(np, &data[segment], baddr, len);
+ cp->data_len += len;
+ }
+ } else {
+ segment = -2;
+ }
+
+ return segment;
+}
+
+/*
+ * Queue a SCSI command.
+ */
+static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd)
+{
+ struct scsi_device *sdev = cmd->device;
+ struct sym_tcb *tp;
+ struct sym_lcb *lp;
+ struct sym_ccb *cp;
+ int order;
+
+ /*
+ * Minimal checkings, so that we will not
+ * go outside our tables.
+ */
+ if (sdev->id == np->myaddr ||
+ sdev->id >= SYM_CONF_MAX_TARGET ||
+ sdev->lun >= SYM_CONF_MAX_LUN) {
+ sym_xpt_done2(np, cmd, CAM_DEV_NOT_THERE);
+ return 0;
+ }
+
+ /*
+ * Retrieve the target descriptor.
+ */
+ tp = &np->target[sdev->id];
+
+ /*
+ * Complete the 1st INQUIRY command with error
+ * condition if the device is flagged NOSCAN
+ * at BOOT in the NVRAM. This may speed up
+ * the boot and maintain coherency with BIOS
+ * device numbering. Clearing the flag allows
+ * user to rescan skipped devices later.
+ * We also return error for devices not flagged
+ * for SCAN LUNS in the NVRAM since some mono-lun
+ * devices behave badly when asked for some non
+ * zero LUN. Btw, this is an absolute hack.:-)
+ */
+ if (cmd->cmnd[0] == 0x12 || cmd->cmnd[0] == 0x0) {
+ if ((tp->usrflags & SYM_SCAN_BOOT_DISABLED) ||
+ ((tp->usrflags & SYM_SCAN_LUNS_DISABLED) &&
+ sdev->lun != 0)) {
+ tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED;
+ sym_xpt_done2(np, cmd, CAM_DEV_NOT_THERE);
+ return 0;
+ }
+ }
+
+ /*
+ * Select tagged/untagged.
+ */
+ lp = sym_lp(tp, sdev->lun);
+ order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0;
+
+ /*
+ * Queue the SCSI IO.
+ */
+ cp = sym_get_ccb(np, cmd, order);
+ if (!cp)
+ return 1; /* Means resource shortage */
+ sym_queue_scsiio(np, cmd, cp);
+ return 0;
+}
+
+/*
+ * Setup buffers and pointers that address the CDB.
+ */
+static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
+{
+ u32 cmd_ba;
+ int cmd_len;
+
+ /*
+ * CDB is 16 bytes max.
+ */
+ if (cmd->cmd_len > sizeof(cp->cdb_buf)) {
+ sym_set_cam_status(cp->cmd, CAM_REQ_INVALID);
+ return -1;
+ }
+
+ memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len);
+ cmd_ba = CCB_BA (cp, cdb_buf[0]);
+ cmd_len = cmd->cmd_len;
+
+ cp->phys.cmd.addr = cpu_to_scr(cmd_ba);
+ cp->phys.cmd.size = cpu_to_scr(cmd_len);
+
+ return 0;
+}
+
+/*
+ * Setup pointers that address the data and start the I/O.
+ */
+int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
+{
+ int dir;
+ struct sym_tcb *tp = &np->target[cp->target];
+ struct sym_lcb *lp = sym_lp(tp, cp->lun);
+
+ /*
+ * Build the CDB.
+ */
+ if (sym_setup_cdb(np, cmd, cp))
+ goto out_abort;
+
+ /*
+ * No direction means no data.
+ */
+ dir = cmd->sc_data_direction;
+ if (dir != DMA_NONE) {
+ cp->segments = sym_scatter(np, cp, cmd);
+ if (cp->segments < 0) {
+ if (cp->segments == -2)
+ sym_set_cam_status(cmd, CAM_RESRC_UNAVAIL);
+ else
+ sym_set_cam_status(cmd, CAM_REQ_TOO_BIG);
+ goto out_abort;
+ }
+ } else {
+ cp->data_len = 0;
+ cp->segments = 0;
+ }
+
+ /*
+ * Set data pointers.
+ */
+ sym_setup_data_pointers(np, cp, dir);
+
+ /*
+ * When `#ifed 1', the code below makes the driver
+ * panic on the first attempt to write to a SCSI device.
+ * It is the first test we want to do after a driver
+ * change that does not seem obviously safe. :)
+ */
+#if 0
+ switch (cp->cdb_buf[0]) {
+ case 0x0A: case 0x2A: case 0xAA:
+ panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
+ break;
+ default:
+ break;
+ }
+#endif
+
+ /*
+ * activate this job.
+ */
+ if (lp)
+ sym_start_next_ccbs(np, lp, 2);
+ else
+ sym_put_start_queue(np, cp);
+ return 0;
+
+out_abort:
+ sym_free_ccb(np, cp);
+ sym_xpt_done(np, cmd);
+ return 0;
+}
+
+
+/*
+ * timer daemon.
+ *
+ * Misused to keep the driver running when
+ * interrupts are not configured correctly.
+ */
+static void sym_timer(struct sym_hcb *np)
+{
+ unsigned long thistime = jiffies;
+
+ /*
+ * Restart the timer.
+ */
+ np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL;
+ add_timer(&np->s.timer);
+
+ /*
+ * If we are resetting the ncr, wait for settle_time before
+ * clearing it. Then command processing will be resumed.
+ */
+ if (np->s.settle_time_valid) {
+ if (time_before_eq(np->s.settle_time, thistime)) {
+ if (sym_verbose >= 2 )
+ printk("%s: command processing resumed\n",
+ sym_name(np));
+ np->s.settle_time_valid = 0;
+ }
+ return;
+ }
+
+ /*
+ * Nothing to do for now, but that may come.
+ */
+ if (np->s.lasttime + 4*HZ < thistime) {
+ np->s.lasttime = thistime;
+ }
+
+#ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
+ /*
+ * Some way-broken PCI bridges may lead to
+ * completions being lost when the clearing
+ * of the INTFLY flag by the CPU occurs
+ * concurrently with the chip raising this flag.
+ * If this ever happen, lost completions will
+ * be reaped here.
+ */
+ sym_wakeup_done(np);
+#endif
+}
+
+
+/*
+ * PCI BUS error handler.
+ */
+void sym_log_bus_error(struct sym_hcb *np)
+{
+ u_short pci_sts;
+ pci_read_config_word(np->s.device, PCI_STATUS, &pci_sts);
+ if (pci_sts & 0xf900) {
+ pci_write_config_word(np->s.device, PCI_STATUS, pci_sts);
+ printf("%s: PCI STATUS = 0x%04x\n",
+ sym_name(np), pci_sts & 0xf900);
+ }
+}
+
+/*
+ * queuecommand method. Entered with the host adapter lock held and
+ * interrupts disabled.
+ */
+static int sym53c8xx_queue_command(struct scsi_cmnd *cmd,
+ void (*done)(struct scsi_cmnd *))
+{
+ struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
+ struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd);
+ int sts = 0;
+
+ cmd->scsi_done = done;
+ memset(ucp, 0, sizeof(*ucp));
+
+ /*
+ * Shorten our settle_time if needed for
+ * this command not to time out.
+ */
+ if (np->s.settle_time_valid && cmd->timeout_per_command) {
+ unsigned long tlimit = jiffies + cmd->timeout_per_command;
+ tlimit -= SYM_CONF_TIMER_INTERVAL*2;
+ if (time_after(np->s.settle_time, tlimit)) {
+ np->s.settle_time = tlimit;
+ }
+ }
+
+ if (np->s.settle_time_valid)
+ return SCSI_MLQUEUE_HOST_BUSY;
+
+ sts = sym_queue_command(np, cmd);
+ if (sts)
+ return SCSI_MLQUEUE_HOST_BUSY;
+ return 0;
+}
+
+/*
+ * Linux entry point of the interrupt handler.
+ */
+static irqreturn_t sym53c8xx_intr(int irq, void *dev_id, struct pt_regs * regs)
+{
+ unsigned long flags;
+ struct sym_hcb *np = (struct sym_hcb *)dev_id;
+
+ if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("[");
+
+ spin_lock_irqsave(np->s.host->host_lock, flags);
+ sym_interrupt(np);
+ spin_unlock_irqrestore(np->s.host->host_lock, flags);
+
+ if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n");
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * Linux entry point of the timer handler
+ */
+static void sym53c8xx_timer(unsigned long npref)
+{
+ struct sym_hcb *np = (struct sym_hcb *)npref;
+ unsigned long flags;
+
+ spin_lock_irqsave(np->s.host->host_lock, flags);
+ sym_timer(np);
+ spin_unlock_irqrestore(np->s.host->host_lock, flags);
+}
+
+
+/*
+ * What the eh thread wants us to perform.
+ */
+#define SYM_EH_ABORT 0
+#define SYM_EH_DEVICE_RESET 1
+#define SYM_EH_BUS_RESET 2
+#define SYM_EH_HOST_RESET 3
+
+/*
+ * What we will do regarding the involved SCSI command.
+ */
+#define SYM_EH_DO_IGNORE 0
+#define SYM_EH_DO_COMPLETE 1
+#define SYM_EH_DO_WAIT 2
+
+/*
+ * Our general completion handler.
+ */
+static void __sym_eh_done(struct scsi_cmnd *cmd, int timed_out)
+{
+ struct sym_eh_wait *ep = SYM_UCMD_PTR(cmd)->eh_wait;
+ if (!ep)
+ return;
+
+ /* Try to avoid a race here (not 100% safe) */
+ if (!timed_out) {
+ ep->timed_out = 0;
+ if (ep->to_do == SYM_EH_DO_WAIT && !del_timer(&ep->timer))
+ return;
+ }
+
+ /* Revert everything */
+ SYM_UCMD_PTR(cmd)->eh_wait = NULL;
+ cmd->scsi_done = ep->old_done;
+
+ /* Wake up the eh thread if it wants to sleep */
+ if (ep->to_do == SYM_EH_DO_WAIT)
+ complete(&ep->done);
+}
+
+/*
+ * scsi_done() alias when error recovery is in progress.
+ */
+static void sym_eh_done(struct scsi_cmnd *cmd) { __sym_eh_done(cmd, 0); }
+
+/*
+ * Some timeout handler to avoid waiting too long.
+ */
+static void sym_eh_timeout(u_long p) { __sym_eh_done((struct scsi_cmnd *)p, 1); }
+
+/*
+ * Generic method for our eh processing.
+ * The 'op' argument tells what we have to do.
+ */
+static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd)
+{
+ struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
+ SYM_QUEHEAD *qp;
+ int to_do = SYM_EH_DO_IGNORE;
+ int sts = -1;
+ struct sym_eh_wait eh, *ep = &eh;
+
+ dev_warn(&cmd->device->sdev_gendev, "%s operation started.\n", opname);
+
+#if 0
+ /* This one should be the result of some race, thus to ignore */
+ if (cmd->serial_number != cmd->serial_number_at_timeout)
+ goto prepare;
+#endif
+
+ /* This one is queued in some place -> to wait for completion */
+ FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) {
+ struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq);
+ if (cp->cmd == cmd) {
+ to_do = SYM_EH_DO_WAIT;
+ goto prepare;
+ }
+ }
+
+prepare:
+ /* Prepare stuff to either ignore, complete or wait for completion */
+ switch(to_do) {
+ default:
+ case SYM_EH_DO_IGNORE:
+ break;
+ case SYM_EH_DO_WAIT:
+ init_completion(&ep->done);
+ /* fall through */
+ case SYM_EH_DO_COMPLETE:
+ ep->old_done = cmd->scsi_done;
+ cmd->scsi_done = sym_eh_done;
+ SYM_UCMD_PTR(cmd)->eh_wait = ep;
+ }
+
+ /* Try to proceed the operation we have been asked for */
+ sts = -1;
+ switch(op) {
+ case SYM_EH_ABORT:
+ sts = sym_abort_scsiio(np, cmd, 1);
+ break;
+ case SYM_EH_DEVICE_RESET:
+ sts = sym_reset_scsi_target(np, cmd->device->id);
+ break;
+ case SYM_EH_BUS_RESET:
+ sym_reset_scsi_bus(np, 1);
+ sts = 0;
+ break;
+ case SYM_EH_HOST_RESET:
+ sym_reset_scsi_bus(np, 0);
+ sym_start_up (np, 1);
+ sts = 0;
+ break;
+ default:
+ break;
+ }
+
+ /* On error, restore everything and cross fingers :) */
+ if (sts) {
+ SYM_UCMD_PTR(cmd)->eh_wait = NULL;
+ cmd->scsi_done = ep->old_done;
+ to_do = SYM_EH_DO_IGNORE;
+ }
+
+ ep->to_do = to_do;
+ /* Complete the command with locks held as required by the driver */
+ if (to_do == SYM_EH_DO_COMPLETE)
+ sym_xpt_done2(np, cmd, CAM_REQ_ABORTED);
+
+ /* Wait for completion with locks released, as required by kernel */
+ if (to_do == SYM_EH_DO_WAIT) {
+ init_timer(&ep->timer);
+ ep->timer.expires = jiffies + (5*HZ);
+ ep->timer.function = sym_eh_timeout;
+ ep->timer.data = (u_long)cmd;
+ ep->timed_out = 1; /* Be pessimistic for once :) */
+ add_timer(&ep->timer);
+ spin_unlock_irq(np->s.host->host_lock);
+ wait_for_completion(&ep->done);
+ spin_lock_irq(np->s.host->host_lock);
+ if (ep->timed_out)
+ sts = -2;
+ }
+ dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname,
+ sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed");
+ return sts ? SCSI_FAILED : SCSI_SUCCESS;
+}
+
+
+/*
+ * Error handlers called from the eh thread (one thread per HBA).
+ */
+static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd)
+{
+ return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd);
+}
+
+static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd)
+{
+ return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd);
+}
+
+static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd)
+{
+ return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd);
+}
+
+static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd)
+{
+ return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd);
+}
+
+/*
+ * Tune device queuing depth, according to various limits.
+ */
+static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags)
+{
+ struct sym_lcb *lp = sym_lp(tp, lun);
+ u_short oldtags;
+
+ if (!lp)
+ return;
+
+ oldtags = lp->s.reqtags;
+
+ if (reqtags > lp->s.scdev_depth)
+ reqtags = lp->s.scdev_depth;
+
+ lp->started_limit = reqtags ? reqtags : 2;
+ lp->started_max = 1;
+ lp->s.reqtags = reqtags;
+
+ if (reqtags != oldtags) {
+ dev_info(&tp->sdev->sdev_target->dev,
+ "tagged command queuing %s, command queue depth %d.\n",
+ lp->s.reqtags ? "enabled" : "disabled",
+ lp->started_limit);
+ }
+}
+
+/*
+ * Linux select queue depths function
+ */
+#define DEF_DEPTH (sym_driver_setup.max_tag)
+#define ALL_TARGETS -2
+#define NO_TARGET -1
+#define ALL_LUNS -2
+#define NO_LUN -1
+
+static int device_queue_depth(struct sym_hcb *np, int target, int lun)
+{
+ int c, h, t, u, v;
+ char *p = sym_driver_setup.tag_ctrl;
+ char *ep;
+
+ h = -1;
+ t = NO_TARGET;
+ u = NO_LUN;
+ while ((c = *p++) != 0) {
+ v = simple_strtoul(p, &ep, 0);
+ switch(c) {
+ case '/':
+ ++h;
+ t = ALL_TARGETS;
+ u = ALL_LUNS;
+ break;
+ case 't':
+ if (t != target)
+ t = (target == v) ? v : NO_TARGET;
+ u = ALL_LUNS;
+ break;
+ case 'u':
+ if (u != lun)
+ u = (lun == v) ? v : NO_LUN;
+ break;
+ case 'q':
+ if (h == np->s.unit &&
+ (t == ALL_TARGETS || t == target) &&
+ (u == ALL_LUNS || u == lun))
+ return v;
+ break;
+ case '-':
+ t = ALL_TARGETS;
+ u = ALL_LUNS;
+ break;
+ default:
+ break;
+ }
+ p = ep;
+ }
+ return DEF_DEPTH;
+}
+
+static int sym53c8xx_slave_alloc(struct scsi_device *device)
+{
+ struct sym_hcb *np = sym_get_hcb(device->host);
+ struct sym_tcb *tp = &np->target[device->id];
+ if (!tp->sdev)
+ tp->sdev = device;
+
+ return 0;
+}
+
+static void sym53c8xx_slave_destroy(struct scsi_device *device)
+{
+ struct sym_hcb *np = sym_get_hcb(device->host);
+ struct sym_tcb *tp = &np->target[device->id];
+ if (tp->sdev == device)
+ tp->sdev = NULL;
+}
+
+/*
+ * Linux entry point for device queue sizing.
+ */
+static int sym53c8xx_slave_configure(struct scsi_device *device)
+{
+ struct sym_hcb *np = sym_get_hcb(device->host);
+ struct sym_tcb *tp = &np->target[device->id];
+ struct sym_lcb *lp;
+ int reqtags, depth_to_use;
+
+ /*
+ * Allocate the LCB if not yet.
+ * If it fail, we may well be in the sh*t. :)
+ */
+ lp = sym_alloc_lcb(np, device->id, device->lun);
+ if (!lp)
+ return -ENOMEM;
+
+ /*
+ * Get user flags.
+ */
+ lp->curr_flags = lp->user_flags;
+
+ /*
+ * Select queue depth from driver setup.
+ * Donnot use more than configured by user.
+ * Use at least 2.
+ * Donnot use more than our maximum.
+ */
+ reqtags = device_queue_depth(np, device->id, device->lun);
+ if (reqtags > tp->usrtags)
+ reqtags = tp->usrtags;
+ if (!device->tagged_supported)
+ reqtags = 0;
+#if 1 /* Avoid to locally queue commands for no good reasons */
+ if (reqtags > SYM_CONF_MAX_TAG)
+ reqtags = SYM_CONF_MAX_TAG;
+ depth_to_use = (reqtags ? reqtags : 2);
+#else
+ depth_to_use = (reqtags ? SYM_CONF_MAX_TAG : 2);
+#endif
+ scsi_adjust_queue_depth(device,
+ (device->tagged_supported ?
+ MSG_SIMPLE_TAG : 0),
+ depth_to_use);
+ lp->s.scdev_depth = depth_to_use;
+ sym_tune_dev_queuing(tp, device->lun, reqtags);
+
+ if (!spi_initial_dv(device->sdev_target))
+ spi_dv_device(device);
+
+ return 0;
+}
+
+/*
+ * Linux entry point for info() function
+ */
+static const char *sym53c8xx_info (struct Scsi_Host *host)
+{
+ return SYM_DRIVER_NAME;
+}
+
+
+#ifdef SYM_LINUX_PROC_INFO_SUPPORT
+/*
+ * Proc file system stuff
+ *
+ * A read operation returns adapter information.
+ * A write operation is a control command.
+ * The string is parsed in the driver code and the command is passed
+ * to the sym_usercmd() function.
+ */
+
+#ifdef SYM_LINUX_USER_COMMAND_SUPPORT
+
+struct sym_usrcmd {
+ u_long target;
+ u_long lun;
+ u_long data;
+ u_long cmd;
+};
+
+#define UC_SETSYNC 10
+#define UC_SETTAGS 11
+#define UC_SETDEBUG 12
+#define UC_SETWIDE 14
+#define UC_SETFLAG 15
+#define UC_SETVERBOSE 17
+#define UC_RESETDEV 18
+#define UC_CLEARDEV 19
+
+static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc)
+{
+ struct sym_tcb *tp;
+ int t, l;
+
+ switch (uc->cmd) {
+ case 0: return;
+
+#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
+ case UC_SETDEBUG:
+ sym_debug_flags = uc->data;
+ break;
+#endif
+ case UC_SETVERBOSE:
+ np->verbose = uc->data;
+ break;
+ default:
+ /*
+ * We assume that other commands apply to targets.
+ * This should always be the case and avoid the below
+ * 4 lines to be repeated 6 times.
+ */
+ for (t = 0; t < SYM_CONF_MAX_TARGET; t++) {
+ if (!((uc->target >> t) & 1))
+ continue;
+ tp = &np->target[t];
+
+ switch (uc->cmd) {
+
+ case UC_SETSYNC:
+ if (!uc->data || uc->data >= 255) {
+ tp->tgoal.iu = tp->tgoal.dt =
+ tp->tgoal.qas = 0;
+ tp->tgoal.offset = 0;
+ } else if (uc->data <= 9 && np->minsync_dt) {
+ if (uc->data < np->minsync_dt)
+ uc->data = np->minsync_dt;
+ tp->tgoal.iu = tp->tgoal.dt =
+ tp->tgoal.qas = 1;
+ tp->tgoal.width = 1;
+ tp->tgoal.period = uc->data;
+ tp->tgoal.offset = np->maxoffs_dt;
+ } else {
+ if (uc->data < np->minsync)
+ uc->data = np->minsync;
+ tp->tgoal.iu = tp->tgoal.dt =
+ tp->tgoal.qas = 0;
+ tp->tgoal.period = uc->data;
+ tp->tgoal.offset = np->maxoffs;
+ }
+ tp->tgoal.check_nego = 1;
+ break;
+ case UC_SETWIDE:
+ tp->tgoal.width = uc->data ? 1 : 0;
+ tp->tgoal.check_nego = 1;
+ break;
+ case UC_SETTAGS:
+ for (l = 0; l < SYM_CONF_MAX_LUN; l++)
+ sym_tune_dev_queuing(tp, l, uc->data);
+ break;
+ case UC_RESETDEV:
+ tp->to_reset = 1;
+ np->istat_sem = SEM;
+ OUTB(np, nc_istat, SIGP|SEM);
+ break;
+ case UC_CLEARDEV:
+ for (l = 0; l < SYM_CONF_MAX_LUN; l++) {
+ struct sym_lcb *lp = sym_lp(tp, l);
+ if (lp) lp->to_clear = 1;
+ }
+ np->istat_sem = SEM;
+ OUTB(np, nc_istat, SIGP|SEM);
+ break;
+ case UC_SETFLAG:
+ tp->usrflags = uc->data;
+ break;
+ }
+ }
+ break;
+ }
+}
+
+static int skip_spaces(char *ptr, int len)
+{
+ int cnt, c;
+
+ for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--);
+
+ return (len - cnt);
+}
+
+static int get_int_arg(char *ptr, int len, u_long *pv)
+{
+ char *end;
+
+ *pv = simple_strtoul(ptr, &end, 10);
+ return (end - ptr);
+}
+
+static int is_keyword(char *ptr, int len, char *verb)
+{
+ int verb_len = strlen(verb);
+
+ if (len >= verb_len && !memcmp(verb, ptr, verb_len))
+ return verb_len;
+ else
+ return 0;
+}
+
+#define SKIP_SPACES(ptr, len) \
+ if ((arg_len = skip_spaces(ptr, len)) < 1) \
+ return -EINVAL; \
+ ptr += arg_len; len -= arg_len;
+
+#define GET_INT_ARG(ptr, len, v) \
+ if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
+ return -EINVAL; \
+ ptr += arg_len; len -= arg_len;
+
+
+/*
+ * Parse a control command
+ */
+
+static int sym_user_command(struct sym_hcb *np, char *buffer, int length)
+{
+ char *ptr = buffer;
+ int len = length;
+ struct sym_usrcmd cmd, *uc = &cmd;
+ int arg_len;
+ u_long target;
+
+ memset(uc, 0, sizeof(*uc));
+
+ if (len > 0 && ptr[len-1] == '\n')
+ --len;
+
+ if ((arg_len = is_keyword(ptr, len, "setsync")) != 0)
+ uc->cmd = UC_SETSYNC;
+ else if ((arg_len = is_keyword(ptr, len, "settags")) != 0)
+ uc->cmd = UC_SETTAGS;
+ else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0)
+ uc->cmd = UC_SETVERBOSE;
+ else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0)
+ uc->cmd = UC_SETWIDE;
+#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
+ else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0)
+ uc->cmd = UC_SETDEBUG;
+#endif
+ else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0)
+ uc->cmd = UC_SETFLAG;
+ else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0)
+ uc->cmd = UC_RESETDEV;
+ else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0)
+ uc->cmd = UC_CLEARDEV;
+ else
+ arg_len = 0;
+
+#ifdef DEBUG_PROC_INFO
+printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd);
+#endif
+
+ if (!arg_len)
+ return -EINVAL;
+ ptr += arg_len; len -= arg_len;
+
+ switch(uc->cmd) {
+ case UC_SETSYNC:
+ case UC_SETTAGS:
+ case UC_SETWIDE:
+ case UC_SETFLAG:
+ case UC_RESETDEV:
+ case UC_CLEARDEV:
+ SKIP_SPACES(ptr, len);
+ if ((arg_len = is_keyword(ptr, len, "all")) != 0) {
+ ptr += arg_len; len -= arg_len;
+ uc->target = ~0;
+ } else {
+ GET_INT_ARG(ptr, len, target);
+ uc->target = (1<<target);
+#ifdef DEBUG_PROC_INFO
+printk("sym_user_command: target=%ld\n", target);
+#endif
+ }
+ break;
+ }
+
+ switch(uc->cmd) {
+ case UC_SETVERBOSE:
+ case UC_SETSYNC:
+ case UC_SETTAGS:
+ case UC_SETWIDE:
+ SKIP_SPACES(ptr, len);
+ GET_INT_ARG(ptr, len, uc->data);
+#ifdef DEBUG_PROC_INFO
+printk("sym_user_command: data=%ld\n", uc->data);
+#endif
+ break;
+#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
+ case UC_SETDEBUG:
+ while (len > 0) {
+ SKIP_SPACES(ptr, len);
+ if ((arg_len = is_keyword(ptr, len, "alloc")))
+ uc->data |= DEBUG_ALLOC;
+ else if ((arg_len = is_keyword(ptr, len, "phase")))
+ uc->data |= DEBUG_PHASE;
+ else if ((arg_len = is_keyword(ptr, len, "queue")))
+ uc->data |= DEBUG_QUEUE;
+ else if ((arg_len = is_keyword(ptr, len, "result")))
+ uc->data |= DEBUG_RESULT;
+ else if ((arg_len = is_keyword(ptr, len, "scatter")))
+ uc->data |= DEBUG_SCATTER;
+ else if ((arg_len = is_keyword(ptr, len, "script")))
+ uc->data |= DEBUG_SCRIPT;
+ else if ((arg_len = is_keyword(ptr, len, "tiny")))
+ uc->data |= DEBUG_TINY;
+ else if ((arg_len = is_keyword(ptr, len, "timing")))
+ uc->data |= DEBUG_TIMING;
+ else if ((arg_len = is_keyword(ptr, len, "nego")))
+ uc->data |= DEBUG_NEGO;
+ else if ((arg_len = is_keyword(ptr, len, "tags")))
+ uc->data |= DEBUG_TAGS;
+ else if ((arg_len = is_keyword(ptr, len, "pointer")))
+ uc->data |= DEBUG_POINTER;
+ else
+ return -EINVAL;
+ ptr += arg_len; len -= arg_len;
+ }
+#ifdef DEBUG_PROC_INFO
+printk("sym_user_command: data=%ld\n", uc->data);
+#endif
+ break;
+#endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
+ case UC_SETFLAG:
+ while (len > 0) {
+ SKIP_SPACES(ptr, len);
+ if ((arg_len = is_keyword(ptr, len, "no_disc")))
+ uc->data &= ~SYM_DISC_ENABLED;
+ else
+ return -EINVAL;
+ ptr += arg_len; len -= arg_len;
+ }
+ break;
+ default:
+ break;
+ }
+
+ if (len)
+ return -EINVAL;
+ else {
+ unsigned long flags;
+
+ spin_lock_irqsave(np->s.host->host_lock, flags);
+ sym_exec_user_command (np, uc);
+ spin_unlock_irqrestore(np->s.host->host_lock, flags);
+ }
+ return length;
+}
+
+#endif /* SYM_LINUX_USER_COMMAND_SUPPORT */
+
+
+#ifdef SYM_LINUX_USER_INFO_SUPPORT
+/*
+ * Informations through the proc file system.
+ */
+struct info_str {
+ char *buffer;
+ int length;
+ int offset;
+ int pos;
+};
+
+static void copy_mem_info(struct info_str *info, char *data, int len)
+{
+ if (info->pos + len > info->length)
+ len = info->length - info->pos;
+
+ if (info->pos + len < info->offset) {
+ info->pos += len;
+ return;
+ }
+ if (info->pos < info->offset) {
+ data += (info->offset - info->pos);
+ len -= (info->offset - info->pos);
+ }
+
+ if (len > 0) {
+ memcpy(info->buffer + info->pos, data, len);
+ info->pos += len;
+ }
+}
+
+static int copy_info(struct info_str *info, char *fmt, ...)
+{
+ va_list args;
+ char buf[81];
+ int len;
+
+ va_start(args, fmt);
+ len = vsprintf(buf, fmt, args);
+ va_end(args);
+
+ copy_mem_info(info, buf, len);
+ return len;
+}
+
+/*
+ * Copy formatted information into the input buffer.
+ */
+static int sym_host_info(struct sym_hcb *np, char *ptr, off_t offset, int len)
+{
+ struct info_str info;
+
+ info.buffer = ptr;
+ info.length = len;
+ info.offset = offset;
+ info.pos = 0;
+
+ copy_info(&info, "Chip " NAME53C "%s, device id 0x%x, "
+ "revision id 0x%x\n",
+ np->s.chip_name, np->device_id, np->revision_id);
+ copy_info(&info, "At PCI address %s, IRQ " IRQ_FMT "\n",
+ pci_name(np->s.device), IRQ_PRM(np->s.irq));
+ copy_info(&info, "Min. period factor %d, %s SCSI BUS%s\n",
+ (int) (np->minsync_dt ? np->minsync_dt : np->minsync),
+ np->maxwide ? "Wide" : "Narrow",
+ np->minsync_dt ? ", DT capable" : "");
+
+ copy_info(&info, "Max. started commands %d, "
+ "max. commands per LUN %d\n",
+ SYM_CONF_MAX_START, SYM_CONF_MAX_TAG);
+
+ return info.pos > info.offset? info.pos - info.offset : 0;
+}
+#endif /* SYM_LINUX_USER_INFO_SUPPORT */
+
+/*
+ * Entry point of the scsi proc fs of the driver.
+ * - func = 0 means read (returns adapter infos)
+ * - func = 1 means write (not yet merget from sym53c8xx)
+ */
+static int sym53c8xx_proc_info(struct Scsi_Host *host, char *buffer,
+ char **start, off_t offset, int length, int func)
+{
+ struct sym_hcb *np = sym_get_hcb(host);
+ int retv;
+
+ if (func) {
+#ifdef SYM_LINUX_USER_COMMAND_SUPPORT
+ retv = sym_user_command(np, buffer, length);
+#else
+ retv = -EINVAL;
+#endif
+ } else {
+ if (start)
+ *start = buffer;
+#ifdef SYM_LINUX_USER_INFO_SUPPORT
+ retv = sym_host_info(np, buffer, offset, length);
+#else
+ retv = -EINVAL;
+#endif
+ }
+
+ return retv;
+}
+#endif /* SYM_LINUX_PROC_INFO_SUPPORT */
+
+/*
+ * Free controller resources.
+ */
+static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev)
+{
+ /*
+ * Free O/S specific resources.
+ */
+ if (np->s.irq)
+ free_irq(np->s.irq, np);
+ if (np->s.ioaddr)
+ pci_iounmap(pdev, np->s.ioaddr);
+ if (np->s.ramaddr)
+ pci_iounmap(pdev, np->s.ramaddr);
+ /*
+ * Free O/S independent resources.
+ */
+ sym_hcb_free(np);
+
+ sym_mfree_dma(np, sizeof(*np), "HCB");
+}
+
+/*
+ * Ask/tell the system about DMA addressing.
+ */
+static int sym_setup_bus_dma_mask(struct sym_hcb *np)
+{
+#if SYM_CONF_DMA_ADDRESSING_MODE > 0
+#if SYM_CONF_DMA_ADDRESSING_MODE == 1
+#define DMA_DAC_MASK 0x000000ffffffffffULL /* 40-bit */
+#elif SYM_CONF_DMA_ADDRESSING_MODE == 2
+#define DMA_DAC_MASK DMA_64BIT_MASK
+#endif
+ if ((np->features & FE_DAC) &&
+ !pci_set_dma_mask(np->s.device, DMA_DAC_MASK)) {
+ np->use_dac = 1;
+ return 0;
+ }
+#endif
+
+ if (!pci_set_dma_mask(np->s.device, DMA_32BIT_MASK))
+ return 0;
+
+ printf_warning("%s: No suitable DMA available\n", sym_name(np));
+ return -1;
+}
+
+/*
+ * Host attach and initialisations.
+ *
+ * Allocate host data and ncb structure.
+ * Remap MMIO region.
+ * Do chip initialization.
+ * If all is OK, install interrupt handling and
+ * start the timer daemon.
+ */
+static struct Scsi_Host * __devinit sym_attach(struct scsi_host_template *tpnt,
+ int unit, struct sym_device *dev)
+{
+ struct host_data *host_data;
+ struct sym_hcb *np = NULL;
+ struct Scsi_Host *instance = NULL;
+ struct pci_dev *pdev = dev->pdev;
+ unsigned long flags;
+ struct sym_fw *fw;
+
+ printk(KERN_INFO
+ "sym%d: <%s> rev 0x%x at pci %s irq " IRQ_FMT "\n",
+ unit, dev->chip.name, dev->chip.revision_id,
+ pci_name(pdev), IRQ_PRM(pdev->irq));
+
+ /*
+ * Get the firmware for this chip.
+ */
+ fw = sym_find_firmware(&dev->chip);
+ if (!fw)
+ goto attach_failed;
+
+ /*
+ * Allocate host_data structure
+ */
+ instance = scsi_host_alloc(tpnt, sizeof(*host_data));
+ if (!instance)
+ goto attach_failed;
+ host_data = (struct host_data *) instance->hostdata;
+
+ /*
+ * Allocate immediately the host control block,
+ * since we are only expecting to succeed. :)
+ * We keep track in the HCB of all the resources that
+ * are to be released on error.
+ */
+ np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB");
+ if (!np)
+ goto attach_failed;
+ np->s.device = pdev;
+ np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */
+ host_data->ncb = np;
+ np->s.host = instance;
+
+ pci_set_drvdata(pdev, np);
+
+ /*
+ * Copy some useful infos to the HCB.
+ */
+ np->hcb_ba = vtobus(np);
+ np->verbose = sym_driver_setup.verbose;
+ np->s.device = pdev;
+ np->s.unit = unit;
+ np->device_id = dev->chip.device_id;
+ np->revision_id = dev->chip.revision_id;
+ np->features = dev->chip.features;
+ np->clock_divn = dev->chip.nr_divisor;
+ np->maxoffs = dev->chip.offset_max;
+ np->maxburst = dev->chip.burst_max;
+ np->myaddr = dev->host_id;
+
+ /*
+ * Edit its name.
+ */
+ strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name));
+ sprintf(np->s.inst_name, "sym%d", np->s.unit);
+
+ if (sym_setup_bus_dma_mask(np))
+ goto attach_failed;
+
+ /*
+ * Try to map the controller chip to
+ * virtual and physical memory.
+ */
+ np->mmio_ba = (u32)dev->mmio_base;
+ np->s.ioaddr = dev->s.ioaddr;
+ np->s.ramaddr = dev->s.ramaddr;
+ np->s.io_ws = (np->features & FE_IO256) ? 256 : 128;
+
+ /*
+ * Map on-chip RAM if present and supported.
+ */
+ if (!(np->features & FE_RAM))
+ dev->ram_base = 0;
+ if (dev->ram_base) {
+ np->ram_ba = (u32)dev->ram_base;
+ np->ram_ws = (np->features & FE_RAM8K) ? 8192 : 4096;
+ }
+
+ if (sym_hcb_attach(instance, fw, dev->nvram))
+ goto attach_failed;
+
+ /*
+ * Install the interrupt handler.
+ * If we synchonize the C code with SCRIPTS on interrupt,
+ * we do not want to share the INTR line at all.
+ */
+ if (request_irq(pdev->irq, sym53c8xx_intr, SA_SHIRQ, NAME53C8XX, np)) {
+ printf_err("%s: request irq %d failure\n",
+ sym_name(np), pdev->irq);
+ goto attach_failed;
+ }
+ np->s.irq = pdev->irq;
+
+ /*
+ * After SCSI devices have been opened, we cannot
+ * reset the bus safely, so we do it here.
+ */
+ spin_lock_irqsave(instance->host_lock, flags);
+ if (sym_reset_scsi_bus(np, 0))
+ goto reset_failed;
+
+ /*
+ * Start the SCRIPTS.
+ */
+ sym_start_up (np, 1);
+
+ /*
+ * Start the timer daemon
+ */
+ init_timer(&np->s.timer);
+ np->s.timer.data = (unsigned long) np;
+ np->s.timer.function = sym53c8xx_timer;
+ np->s.lasttime=0;
+ sym_timer (np);
+
+ /*
+ * Fill Linux host instance structure
+ * and return success.
+ */
+ instance->max_channel = 0;
+ instance->this_id = np->myaddr;
+ instance->max_id = np->maxwide ? 16 : 8;
+ instance->max_lun = SYM_CONF_MAX_LUN;
+ instance->unique_id = pci_resource_start(pdev, 0);
+ instance->cmd_per_lun = SYM_CONF_MAX_TAG;
+ instance->can_queue = (SYM_CONF_MAX_START-2);
+ instance->sg_tablesize = SYM_CONF_MAX_SG;
+ instance->max_cmd_len = 16;
+ BUG_ON(sym2_transport_template == NULL);
+ instance->transportt = sym2_transport_template;
+
+ spin_unlock_irqrestore(instance->host_lock, flags);
+
+ return instance;
+
+ reset_failed:
+ printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
+ "TERMINATION, DEVICE POWER etc.!\n", sym_name(np));
+ spin_unlock_irqrestore(instance->host_lock, flags);
+ attach_failed:
+ if (!instance)
+ return NULL;
+ printf_info("%s: giving up ...\n", sym_name(np));
+ if (np)
+ sym_free_resources(np, pdev);
+ scsi_host_put(instance);
+
+ return NULL;
+ }
+
+
+/*
+ * Detect and try to read SYMBIOS and TEKRAM NVRAM.
+ */
+#if SYM_CONF_NVRAM_SUPPORT
+static void __devinit sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
+{
+ devp->nvram = nvp;
+ devp->device_id = devp->chip.device_id;
+ nvp->type = 0;
+
+ sym_read_nvram(devp, nvp);
+}
+#else
+static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
+{
+}
+#endif /* SYM_CONF_NVRAM_SUPPORT */
+
+static int __devinit sym_check_supported(struct sym_device *device)
+{
+ struct sym_chip *chip;
+ struct pci_dev *pdev = device->pdev;
+ u_char revision;
+ unsigned long io_port = pci_resource_start(pdev, 0);
+ int i;
+
+ /*
+ * If user excluded this chip, do not initialize it.
+ * I hate this code so much. Must kill it.
+ */
+ if (io_port) {
+ for (i = 0 ; i < 8 ; i++) {
+ if (sym_driver_setup.excludes[i] == io_port)
+ return -ENODEV;
+ }
+ }
+
+ /*
+ * Check if the chip is supported. Then copy the chip description
+ * to our device structure so we can make it match the actual device
+ * and options.
+ */
+ pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
+ chip = sym_lookup_chip_table(pdev->device, revision);
+ if (!chip) {
+ dev_info(&pdev->dev, "device not supported\n");
+ return -ENODEV;
+ }
+ memcpy(&device->chip, chip, sizeof(device->chip));
+ device->chip.revision_id = revision;
+
+ return 0;
+}
+
+/*
+ * Ignore Symbios chips controlled by various RAID controllers.
+ * These controllers set value 0x52414944 at RAM end - 16.
+ */
+static int __devinit sym_check_raid(struct sym_device *device)
+{
+ unsigned int ram_size, ram_val;
+
+ if (!device->s.ramaddr)
+ return 0;
+
+ if (device->chip.features & FE_RAM8K)
+ ram_size = 8192;
+ else
+ ram_size = 4096;
+
+ ram_val = readl(device->s.ramaddr + ram_size - 16);
+ if (ram_val != 0x52414944)
+ return 0;
+
+ dev_info(&device->pdev->dev,
+ "not initializing, driven by RAID controller.\n");
+ return -ENODEV;
+}
+
+static int __devinit sym_set_workarounds(struct sym_device *device)
+{
+ struct sym_chip *chip = &device->chip;
+ struct pci_dev *pdev = device->pdev;
+ u_short status_reg;
+
+ /*
+ * (ITEM 12 of a DEL about the 896 I haven't yet).
+ * We must ensure the chip will use WRITE AND INVALIDATE.
+ * The revision number limit is for now arbitrary.
+ */
+ if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && chip->revision_id < 0x4) {
+ chip->features |= (FE_WRIE | FE_CLSE);
+ }
+
+ /* If the chip can do Memory Write Invalidate, enable it */
+ if (chip->features & FE_WRIE) {
+ if (pci_set_mwi(pdev))
+ return -ENODEV;
+ }
+
+ /*
+ * Work around for errant bit in 895A. The 66Mhz
+ * capable bit is set erroneously. Clear this bit.
+ * (Item 1 DEL 533)
+ *
+ * Make sure Config space and Features agree.
+ *
+ * Recall: writes are not normal to status register -
+ * write a 1 to clear and a 0 to leave unchanged.
+ * Can only reset bits.
+ */
+ pci_read_config_word(pdev, PCI_STATUS, &status_reg);
+ if (chip->features & FE_66MHZ) {
+ if (!(status_reg & PCI_STATUS_66MHZ))
+ chip->features &= ~FE_66MHZ;
+ } else {
+ if (status_reg & PCI_STATUS_66MHZ) {
+ status_reg = PCI_STATUS_66MHZ;
+ pci_write_config_word(pdev, PCI_STATUS, status_reg);
+ pci_read_config_word(pdev, PCI_STATUS, &status_reg);
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Read and check the PCI configuration for any detected NCR
+ * boards and save data for attaching after all boards have
+ * been detected.
+ */
+static void __devinit
+sym_init_device(struct pci_dev *pdev, struct sym_device *device)
+{
+ int i;
+
+ device->host_id = SYM_SETUP_HOST_ID;
+ device->pdev = pdev;
+
+ i = pci_get_base_address(pdev, 1, &device->mmio_base);
+ pci_get_base_address(pdev, i, &device->ram_base);
+
+#ifndef CONFIG_SCSI_SYM53C8XX_IOMAPPED
+ if (device->mmio_base)
+ device->s.ioaddr = pci_iomap(pdev, 1,
+ pci_resource_len(pdev, 1));
+#endif
+ if (!device->s.ioaddr)
+ device->s.ioaddr = pci_iomap(pdev, 0,
+ pci_resource_len(pdev, 0));
+ if (device->ram_base)
+ device->s.ramaddr = pci_iomap(pdev, i,
+ pci_resource_len(pdev, i));
+}
+
+/*
+ * The NCR PQS and PDS cards are constructed as a DEC bridge
+ * behind which sits a proprietary NCR memory controller and
+ * either four or two 53c875s as separate devices. We can tell
+ * if an 875 is part of a PQS/PDS or not since if it is, it will
+ * be on the same bus as the memory controller. In its usual
+ * mode of operation, the 875s are slaved to the memory
+ * controller for all transfers. To operate with the Linux
+ * driver, the memory controller is disabled and the 875s
+ * freed to function independently. The only wrinkle is that
+ * the preset SCSI ID (which may be zero) must be read in from
+ * a special configuration space register of the 875.
+ */
+static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev)
+{
+ int slot;
+ u8 tmp;
+
+ for (slot = 0; slot < 256; slot++) {
+ struct pci_dev *memc = pci_get_slot(pdev->bus, slot);
+
+ if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) {
+ pci_dev_put(memc);
+ continue;
+ }
+
+ /* bit 1: allow individual 875 configuration */
+ pci_read_config_byte(memc, 0x44, &tmp);
+ if ((tmp & 0x2) == 0) {
+ tmp |= 0x2;
+ pci_write_config_byte(memc, 0x44, tmp);
+ }
+
+ /* bit 2: drive individual 875 interrupts to the bus */
+ pci_read_config_byte(memc, 0x45, &tmp);
+ if ((tmp & 0x4) == 0) {
+ tmp |= 0x4;
+ pci_write_config_byte(memc, 0x45, tmp);
+ }
+
+ pci_dev_put(memc);
+ break;
+ }
+
+ pci_read_config_byte(pdev, 0x84, &tmp);
+ sym_dev->host_id = tmp;
+}
+
+/*
+ * Called before unloading the module.
+ * Detach the host.
+ * We have to free resources and halt the NCR chip.
+ */
+static int sym_detach(struct sym_hcb *np, struct pci_dev *pdev)
+{
+ printk("%s: detaching ...\n", sym_name(np));
+
+ del_timer_sync(&np->s.timer);
+
+ /*
+ * Reset NCR chip.
+ * We should use sym_soft_reset(), but we don't want to do
+ * so, since we may not be safe if interrupts occur.
+ */
+ printk("%s: resetting chip\n", sym_name(np));
+ OUTB(np, nc_istat, SRST);
+ udelay(10);
+ OUTB(np, nc_istat, 0);
+
+ sym_free_resources(np, pdev);
+
+ return 1;
+}
+
+/*
+ * Driver host template.
+ */
+static struct scsi_host_template sym2_template = {
+ .module = THIS_MODULE,
+ .name = "sym53c8xx",
+ .info = sym53c8xx_info,
+ .queuecommand = sym53c8xx_queue_command,
+ .slave_alloc = sym53c8xx_slave_alloc,
+ .slave_configure = sym53c8xx_slave_configure,
+ .slave_destroy = sym53c8xx_slave_destroy,
+ .eh_abort_handler = sym53c8xx_eh_abort_handler,
+ .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler,
+ .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler,
+ .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler,
+ .this_id = 7,
+ .use_clustering = DISABLE_CLUSTERING,
+#ifdef SYM_LINUX_PROC_INFO_SUPPORT
+ .proc_info = sym53c8xx_proc_info,
+ .proc_name = NAME53C8XX,
+#endif
+};
+
+static int attach_count;
+
+static int __devinit sym2_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct sym_device sym_dev;
+ struct sym_nvram nvram;
+ struct Scsi_Host *instance;
+
+ memset(&sym_dev, 0, sizeof(sym_dev));
+ memset(&nvram, 0, sizeof(nvram));
+
+ if (pci_enable_device(pdev))
+ goto leave;
+
+ pci_set_master(pdev);
+
+ if (pci_request_regions(pdev, NAME53C8XX))
+ goto disable;
+
+ sym_init_device(pdev, &sym_dev);
+ if (sym_check_supported(&sym_dev))
+ goto free;
+
+ if (sym_check_raid(&sym_dev))
+ goto leave; /* Don't disable the device */
+
+ if (sym_set_workarounds(&sym_dev))
+ goto free;
+
+ sym_config_pqs(pdev, &sym_dev);
+
+ sym_get_nvram(&sym_dev, &nvram);
+
+ instance = sym_attach(&sym2_template, attach_count, &sym_dev);
+ if (!instance)
+ goto free;
+
+ if (scsi_add_host(instance, &pdev->dev))
+ goto detach;
+ scsi_scan_host(instance);
+
+ attach_count++;
+
+ return 0;
+
+ detach:
+ sym_detach(pci_get_drvdata(pdev), pdev);
+ free:
+ pci_release_regions(pdev);
+ disable:
+ pci_disable_device(pdev);
+ leave:
+ return -ENODEV;
+}
+
+static void __devexit sym2_remove(struct pci_dev *pdev)
+{
+ struct sym_hcb *np = pci_get_drvdata(pdev);
+ struct Scsi_Host *host = np->s.host;
+
+ scsi_remove_host(host);
+ scsi_host_put(host);
+
+ sym_detach(np, pdev);
+
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+
+ attach_count--;
+}
+
+static void sym2_get_signalling(struct Scsi_Host *shost)
+{
+ struct sym_hcb *np = sym_get_hcb(shost);
+ enum spi_signal_type type;
+
+ switch (np->scsi_mode) {
+ case SMODE_SE:
+ type = SPI_SIGNAL_SE;
+ break;
+ case SMODE_LVD:
+ type = SPI_SIGNAL_LVD;
+ break;
+ case SMODE_HVD:
+ type = SPI_SIGNAL_HVD;
+ break;
+ default:
+ type = SPI_SIGNAL_UNKNOWN;
+ break;
+ }
+ spi_signalling(shost) = type;
+}
+
+static void sym2_set_offset(struct scsi_target *starget, int offset)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct sym_hcb *np = sym_get_hcb(shost);
+ struct sym_tcb *tp = &np->target[starget->id];
+
+ tp->tgoal.offset = offset;
+ tp->tgoal.check_nego = 1;
+}
+
+static void sym2_set_period(struct scsi_target *starget, int period)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct sym_hcb *np = sym_get_hcb(shost);
+ struct sym_tcb *tp = &np->target[starget->id];
+
+ /* have to have DT for these transfers */
+ if (period <= np->minsync)
+ tp->tgoal.dt = 1;
+
+ tp->tgoal.period = period;
+ tp->tgoal.check_nego = 1;
+}
+
+static void sym2_set_width(struct scsi_target *starget, int width)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct sym_hcb *np = sym_get_hcb(shost);
+ struct sym_tcb *tp = &np->target[starget->id];
+
+ /* It is illegal to have DT set on narrow transfers. If DT is
+ * clear, we must also clear IU and QAS. */
+ if (width == 0)
+ tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
+
+ tp->tgoal.width = width;
+ tp->tgoal.check_nego = 1;
+}
+
+static void sym2_set_dt(struct scsi_target *starget, int dt)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct sym_hcb *np = sym_get_hcb(shost);
+ struct sym_tcb *tp = &np->target[starget->id];
+
+ /* We must clear QAS and IU if DT is clear */
+ if (dt)
+ tp->tgoal.dt = 1;
+ else
+ tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
+ tp->tgoal.check_nego = 1;
+}
+
+static void sym2_set_iu(struct scsi_target *starget, int iu)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct sym_hcb *np = sym_get_hcb(shost);
+ struct sym_tcb *tp = &np->target[starget->id];
+
+ if (iu)
+ tp->tgoal.iu = tp->tgoal.dt = 1;
+ else
+ tp->tgoal.iu = 0;
+ tp->tgoal.check_nego = 1;
+}
+
+static void sym2_set_qas(struct scsi_target *starget, int qas)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct sym_hcb *np = sym_get_hcb(shost);
+ struct sym_tcb *tp = &np->target[starget->id];
+
+ if (qas)
+ tp->tgoal.dt = tp->tgoal.qas = 1;
+ else
+ tp->tgoal.qas = 0;
+ tp->tgoal.check_nego = 1;
+}
+
+
+static struct spi_function_template sym2_transport_functions = {
+ .set_offset = sym2_set_offset,
+ .show_offset = 1,
+ .set_period = sym2_set_period,
+ .show_period = 1,
+ .set_width = sym2_set_width,
+ .show_width = 1,
+ .set_dt = sym2_set_dt,
+ .show_dt = 1,
+ .set_iu = sym2_set_iu,
+ .show_iu = 1,
+ .set_qas = sym2_set_qas,
+ .show_qas = 1,
+ .get_signalling = sym2_get_signalling,
+};
+
+static struct pci_device_id sym2_id_table[] __devinitdata = {
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, sym2_id_table);
+
+static struct pci_driver sym2_driver = {
+ .name = NAME53C8XX,
+ .id_table = sym2_id_table,
+ .probe = sym2_probe,
+ .remove = __devexit_p(sym2_remove),
+};
+
+static int __init sym2_init(void)
+{
+ int error;
+
+ sym2_setup_params();
+ sym2_transport_template = spi_attach_transport(&sym2_transport_functions);
+ if (!sym2_transport_template)
+ return -ENODEV;
+
+ error = pci_register_driver(&sym2_driver);
+ if (error)
+ spi_release_transport(sym2_transport_template);
+ return error;
+}
+
+static void __exit sym2_exit(void)
+{
+ pci_unregister_driver(&sym2_driver);
+ spi_release_transport(sym2_transport_template);
+}
+
+module_init(sym2_init);
+module_exit(sym2_exit);