sym_glue.c
上传用户:jlfgdled
上传日期:2013-04-10
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文件大小:72k
- /*
- * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
- * of PCI-SCSI IO processors.
- *
- * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
- *
- * 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>
- *
- *-----------------------------------------------------------------------------
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * Where this Software is combined with software released under the terms of
- * the GNU Public License ("GPL") and the terms of the GPL would require the
- * combined work to also be released under the terms of the GPL, the terms
- * and conditions of this License will apply in addition to those of the
- * GPL with the exception of any terms or conditions of this License that
- * conflict with, or are expressly prohibited by, the GPL.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #define SYM_GLUE_C
- #include <linux/module.h>
- #include "sym_glue.h"
- #define NAME53C "sym53c"
- #define NAME53C8XX "sym53c8xx"
- /*
- * Simple Wrapper to kernel PCI bus interface.
- */
- typedef struct pci_dev *pcidev_t;
- #define PCIDEV_NULL (0)
- #define PciBusNumber(d) (d)->bus->number
- #define PciDeviceFn(d) (d)->devfn
- #define PciVendorId(d) (d)->vendor
- #define PciDeviceId(d) (d)->device
- #define PciIrqLine(d) (d)->irq
- static u_long __init
- pci_get_base_cookie(struct pci_dev *pdev, int index)
- {
- u_long base;
- #if LINUX_VERSION_CODE > LinuxVersionCode(2,3,12)
- base = pdev->resource[index].start;
- #else
- base = pdev->base_address[index];
- #if BITS_PER_LONG > 32
- if ((base & 0x7) == 0x4)
- base |= (((u_long)pdev->base_address[++index]) << 32);
- #endif
- #endif
- return (base & ~0x7ul);
- }
- static int __init
- pci_get_base_address(struct pci_dev *pdev, int index, u_long *base)
- {
- u32 tmp;
- #define PCI_BAR_OFFSET(index) (PCI_BASE_ADDRESS_0 + (index<<2))
- pci_read_config_dword(pdev, PCI_BAR_OFFSET(index), &tmp);
- *base = tmp;
- ++index;
- if ((tmp & 0x7) == 0x4) {
- #if BITS_PER_LONG > 32
- pci_read_config_dword(pdev, PCI_BAR_OFFSET(index), &tmp);
- *base |= (((u_long)tmp) << 32);
- #endif
- ++index;
- }
- return index;
- #undef PCI_BAR_OFFSET
- }
- #if LINUX_VERSION_CODE < LinuxVersionCode(2,4,0)
- #define pci_enable_device(pdev) (0)
- #endif
- #if LINUX_VERSION_CODE < LinuxVersionCode(2,4,4)
- #define scsi_set_pci_device(inst, pdev) do { ;} while (0)
- #endif
- /*
- * Insert a delay in micro-seconds and milli-seconds.
- */
- void sym_udelay(int us) { udelay(us); }
- void sym_mdelay(int ms) { mdelay(ms); }
- /*
- * SMP threading.
- *
- * The whole SCSI sub-system under Linux is basically single-threaded.
- * Everything, including low-level driver interrupt routine, happens
- * with the `io_request_lock' held.
- * The sym53c8xx-1.x drivers series ran their interrupt code using a
- * spin mutex per controller. This added complexity without improving
- * scalability significantly. the sym-2 driver still use a spinlock
- * per controller for safety, but basically runs with the damned
- * io_request_lock held.
- */
- spinlock_t sym53c8xx_lock = SPIN_LOCK_UNLOCKED;
- #define SYM_LOCK_DRIVER(flags) spin_lock_irqsave(&sym53c8xx_lock, flags)
- #define SYM_UNLOCK_DRIVER(flags) spin_unlock_irqrestore(&sym53c8xx_lock,flags)
- #define SYM_INIT_LOCK_HCB(np) spin_lock_init(&np->s.smp_lock);
- #define SYM_LOCK_HCB(np, flags) spin_lock_irqsave(&np->s.smp_lock, flags)
- #define SYM_UNLOCK_HCB(np, flags) spin_unlock_irqrestore(&np->s.smp_lock, flags)
- #define SYM_LOCK_SCSI(np, flags)
- spin_lock_irqsave(&io_request_lock, flags)
- #define SYM_UNLOCK_SCSI(np, flags)
- spin_unlock_irqrestore(&io_request_lock, flags)
- /* Ugly, but will make things easier if this locking will ever disappear */
- #define SYM_LOCK_SCSI_NOSAVE(np) spin_lock_irq(&io_request_lock)
- #define SYM_UNLOCK_SCSI_NORESTORE(np) spin_unlock_irq(&io_request_lock)
- /*
- * These simple macros limit expression involving
- * kernel time values (jiffies) to some that have
- * chance not to be too much incorrect. :-)
- */
- #define ktime_get(o) (jiffies + (u_long) o)
- #define ktime_exp(b) ((long)(jiffies) - (long)(b) >= 0)
- #define ktime_dif(a, b) ((long)(a) - (long)(b))
- #define ktime_add(a, o) ((a) + (u_long)(o))
- #define ktime_sub(a, o) ((a) - (u_long)(o))
- /*
- * Wrappers to the generic memory allocator.
- */
- void *sym_calloc(int size, char *name)
- {
- u_long flags;
- void *m;
- SYM_LOCK_DRIVER(flags);
- m = sym_calloc_unlocked(size, name);
- SYM_UNLOCK_DRIVER(flags);
- return m;
- }
- void sym_mfree(void *m, int size, char *name)
- {
- u_long flags;
- SYM_LOCK_DRIVER(flags);
- sym_mfree_unlocked(m, size, name);
- SYM_UNLOCK_DRIVER(flags);
- }
- #ifdef SYM_LINUX_DYNAMIC_DMA_MAPPING
- void *__sym_calloc_dma(m_pool_ident_t dev_dmat, int size, char *name)
- {
- u_long flags;
- void *m;
- SYM_LOCK_DRIVER(flags);
- m = __sym_calloc_dma_unlocked(dev_dmat, size, name);
- SYM_UNLOCK_DRIVER(flags);
- return m;
- }
- void __sym_mfree_dma(m_pool_ident_t dev_dmat, void *m, int size, char *name)
- {
- u_long flags;
- SYM_LOCK_DRIVER(flags);
- __sym_mfree_dma_unlocked(dev_dmat, m, size, name);
- SYM_UNLOCK_DRIVER(flags);
- }
- m_addr_t __vtobus(m_pool_ident_t dev_dmat, void *m)
- {
- u_long flags;
- m_addr_t b;
- SYM_LOCK_DRIVER(flags);
- b = __vtobus_unlocked(dev_dmat, m);
- SYM_UNLOCK_DRIVER(flags);
- return b;
- }
- #endif /* SYM_LINUX_DYNAMIC_DMA_MAPPING */
- /*
- * Map/unmap a PCI memory window.
- */
- #ifndef SYM_OPT_NO_BUS_MEMORY_MAPPING
- static u_long __init pci_map_mem(u_long base, u_long size)
- {
- u_long page_base = ((u_long) base) & PAGE_MASK;
- u_long page_offs = ((u_long) base) - page_base;
- u_long page_remapped = (u_long) ioremap(page_base, page_offs+size);
- return page_remapped? (page_remapped + page_offs) : 0UL;
- }
- static void __init pci_unmap_mem(u_long vaddr, u_long size)
- {
- if (vaddr)
- iounmap((void *) (vaddr & PAGE_MASK));
- }
- #endif
- /*
- * Used to retrieve the host structure when the
- * driver is called from the proc FS.
- */
- static struct Scsi_Host *first_host = NULL;
- /*
- * /proc directory entry and proc_info.
- */
- #if LINUX_VERSION_CODE < LinuxVersionCode(2,3,27)
- static struct proc_dir_entry proc_scsi_sym53c8xx = {
- PROC_SCSI_SYM53C8XX, 9, NAME53C8XX,
- S_IFDIR | S_IRUGO | S_IXUGO, 2
- };
- #endif
- /*
- * Transfer direction
- *
- * Until some linux kernel version near 2.3.40, low-level scsi
- * drivers were not told about data transfer direction.
- */
- #if LINUX_VERSION_CODE > LinuxVersionCode(2, 3, 40)
- #define scsi_data_direction(cmd) (cmd->sc_data_direction)
- #else
- static __inline__ int scsi_data_direction(Scsi_Cmnd *cmd)
- {
- int direction;
- switch((int) cmd->cmnd[0]) {
- case 0x08: /* READ(6) 08 */
- case 0x28: /* READ(10) 28 */
- case 0xA8: /* READ(12) A8 */
- direction = SCSI_DATA_READ;
- break;
- case 0x0A: /* WRITE(6) 0A */
- case 0x2A: /* WRITE(10) 2A */
- case 0xAA: /* WRITE(12) AA */
- direction = SCSI_DATA_WRITE;
- break;
- default:
- direction = SCSI_DATA_UNKNOWN;
- break;
- }
- return direction;
- }
- #endif
- /*
- * Driver host data structure.
- */
- struct host_data {
- hcb_p ncb;
- };
- /*
- * Some type that fit DMA addresses as seen from BUS.
- */
- #ifndef SYM_LINUX_DYNAMIC_DMA_MAPPING
- typedef u_long bus_addr_t;
- #else
- #if SYM_CONF_DMA_ADDRESSING_MODE > 0
- typedef dma64_addr_t bus_addr_t;
- #else
- typedef dma_addr_t bus_addr_t;
- #endif
- #endif
- /*
- * Used by the eh thread to wait for command completion.
- * It is allocated on the eh thread stack.
- */
- struct sym_eh_wait {
- struct semaphore sem;
- struct timer_list timer;
- void (*old_done)(Scsi_Cmnd *);
- int to_do;
- int timed_out;
- };
- /*
- * Driver private area in the SCSI command structure.
- */
- struct sym_ucmd { /* Override the SCSI pointer structure */
- SYM_QUEHEAD link_cmdq; /* Must stay at offset ZERO */
- #ifdef SYM_LINUX_DYNAMIC_DMA_MAPPING
- bus_addr_t data_mapping;
- u_char data_mapped;
- #endif
- struct sym_eh_wait *eh_wait;
- };
- typedef struct sym_ucmd *ucmd_p;
- #define SYM_UCMD_PTR(cmd) ((ucmd_p)(&(cmd)->SCp))
- #define SYM_SCMD_PTR(ucmd) sym_que_entry(ucmd, Scsi_Cmnd, SCp)
- #define SYM_SOFTC_PTR(cmd) (((struct host_data *)cmd->host->hostdata)->ncb)
- /*
- * Deal with DMA mapping/unmapping.
- */
- #ifndef SYM_LINUX_DYNAMIC_DMA_MAPPING
- /* Linux versions prior to pci bus iommu kernel interface */
- #define __unmap_scsi_data(pdev, cmd) do {; } while (0)
- #define __map_scsi_single_data(pdev, cmd) (__vtobus(pdev,(cmd)->request_buffer))
- #define __map_scsi_sg_data(pdev, cmd) ((cmd)->use_sg)
- #define __sync_scsi_data(pdev, cmd) do {; } while (0)
- #define bus_sg_dma_address(sc) vtobus((sc)->address)
- #define bus_sg_dma_len(sc) ((sc)->length)
- #else /* Linux version with pci bus iommu kernel interface */
- #define bus_unmap_sg(pdev, sgptr, sgcnt, dir)
- pci_unmap_sg(pdev, sgptr, sgcnt, dir)
- #define bus_unmap_single(pdev, mapping, bufptr, dir)
- pci_unmap_single(pdev, mapping, bufptr, dir)
- #define bus_map_single(pdev, bufptr, bufsiz, dir)
- pci_map_single(pdev, bufptr, bufsiz, dir)
-
- #define bus_map_sg(pdev, sgptr, sgcnt, dir)
- pci_map_sg(pdev, sgptr, sgcnt, dir)
- #define bus_dma_sync_sg(pdev, sgptr, sgcnt, dir)
- pci_dma_sync_sg(pdev, sgptr, sgcnt, dir)
- #define bus_dma_sync_single(pdev, mapping, bufsiz, dir)
- pci_dma_sync_single(pdev, mapping, bufsiz, dir)
- #define bus_sg_dma_address(sc) sg_dma_address(sc)
- #define bus_sg_dma_len(sc) sg_dma_len(sc)
- static void __unmap_scsi_data(pcidev_t pdev, Scsi_Cmnd *cmd)
- {
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- switch(SYM_UCMD_PTR(cmd)->data_mapped) {
- case 2:
- bus_unmap_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
- break;
- case 1:
- bus_unmap_single(pdev, SYM_UCMD_PTR(cmd)->data_mapping,
- cmd->request_bufflen, dma_dir);
- break;
- }
- SYM_UCMD_PTR(cmd)->data_mapped = 0;
- }
- static bus_addr_t __map_scsi_single_data(pcidev_t pdev, Scsi_Cmnd *cmd)
- {
- bus_addr_t mapping;
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- mapping = bus_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(pcidev_t pdev, Scsi_Cmnd *cmd)
- {
- int use_sg;
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- use_sg = bus_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;
- }
- static void __sync_scsi_data(pcidev_t pdev, Scsi_Cmnd *cmd)
- {
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- switch(SYM_UCMD_PTR(cmd)->data_mapped) {
- case 2:
- bus_dma_sync_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
- break;
- case 1:
- bus_dma_sync_single(pdev, SYM_UCMD_PTR(cmd)->data_mapping,
- cmd->request_bufflen, dma_dir);
- break;
- }
- }
- #endif /* SYM_LINUX_DYNAMIC_DMA_MAPPING */
- #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)
- #define sync_scsi_data(np, cmd)
- __sync_scsi_data(np->s.device, cmd)
- /*
- * Complete a pending CAM CCB.
- */
- void sym_xpt_done(hcb_p np, Scsi_Cmnd *ccb)
- {
- sym_remque(&SYM_UCMD_PTR(ccb)->link_cmdq);
- unmap_scsi_data(np, ccb);
- ccb->scsi_done(ccb);
- }
- void sym_xpt_done2(hcb_p np, Scsi_Cmnd *ccb, int cam_status)
- {
- sym_set_cam_status(ccb, cam_status);
- sym_xpt_done(np, ccb);
- }
- /*
- * Print something that identifies the IO.
- */
- void sym_print_addr (ccb_p cp)
- {
- Scsi_Cmnd *cmd = cp->cam_ccb;
- if (cmd)
- printf("%s:%d:%d:", sym_name(SYM_SOFTC_PTR(cmd)),
- cmd->target,cmd->lun);
- }
- /*
- * Tell the SCSI layer about a BUS RESET.
- */
- void sym_xpt_async_bus_reset(hcb_p np)
- {
- printf_notice("%s: SCSI BUS has been reset.n", sym_name(np));
- np->s.settle_time = ktime_get(sym_driver_setup.settle_delay * HZ);
- np->s.settle_time_valid = 1;
- if (sym_verbose >= 2)
- printf_info("%s: command processing suspended for %d secondsn",
- 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(hcb_p np, int target)
- {
- printf_notice("%s: TARGET %d has been reset.n", sym_name(np), target);
- }
- /*
- * Tell the SCSI layer about the new transfer parameters.
- */
- void sym_xpt_async_nego_wide(hcb_p np, int target)
- {
- if (sym_verbose < 3)
- return;
- sym_announce_transfer_rate(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(hcb_p np, ccb_p cp, int resid)
- {
- Scsi_Cmnd *csio = cp->cam_ccb;
- 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(cp, 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.
- */
- bzero(&csio->sense_buffer, sizeof(csio->sense_buffer));
- bcopy(cp->sns_bbuf, csio->sense_buffer,
- MIN(sizeof(csio->sense_buffer),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 *) csio->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
- 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) {
- PRINT_ADDR(cp);
- printf ("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);
- }
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,3,99)
- csio->resid = resid;
- #endif
- csio->result = (drv_status << 24) + (cam_status << 16) + scsi_status;
- }
- /*
- * Called on successfull INQUIRY response.
- */
- void sym_sniff_inquiry(hcb_p np, Scsi_Cmnd *cmd, int resid)
- {
- int retv;
- if (!cmd || cmd->use_sg)
- return;
- sync_scsi_data(np, cmd);
- retv = __sym_sniff_inquiry(np, cmd->target, cmd->lun,
- (u_char *) cmd->request_buffer,
- cmd->request_bufflen - resid);
- if (retv < 0)
- return;
- else if (retv)
- sym_update_trans_settings(np, &np->target[cmd->target]);
- }
- /*
- * Build the scatter/gather array for an I/O.
- */
- static int sym_scatter_no_sglist(hcb_p np, ccb_p cp, 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) {
- bus_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(hcb_p np, ccb_p cp, 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 > SYM_CONF_MAX_SG)
- segment = -1;
- else if ((use_sg = map_scsi_sg_data(np, cmd)) > 0) {
- struct scatterlist *scatter = (struct scatterlist *)cmd->buffer;
- struct sym_tblmove *data;
- data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg];
- for (segment = 0; segment < use_sg; segment++) {
- bus_addr_t baddr = bus_sg_dma_address(&scatter[segment]);
- unsigned int len = bus_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(hcb_p np, Scsi_Cmnd *ccb)
- {
- /* Scsi_Device *device = ccb->device; */
- tcb_p tp;
- lcb_p lp;
- ccb_p cp;
- int order;
- /*
- * Minimal checkings, so that we will not
- * go outside our tables.
- */
- if (ccb->target == np->myaddr ||
- ccb->target >= SYM_CONF_MAX_TARGET ||
- ccb->lun >= SYM_CONF_MAX_LUN) {
- sym_xpt_done2(np, ccb, CAM_DEV_NOT_THERE);
- return 0;
- }
- /*
- * Retreive the target descriptor.
- */
- tp = &np->target[ccb->target];
- /*
- * 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 (ccb->cmnd[0] == 0x12 || ccb->cmnd[0] == 0x0) {
- if ((tp->usrflags & SYM_SCAN_BOOT_DISABLED) ||
- ((tp->usrflags & SYM_SCAN_LUNS_DISABLED) &&
- ccb->lun != 0)) {
- tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED;
- sym_xpt_done2(np, ccb, CAM_DEV_NOT_THERE);
- return 0;
- }
- }
- /*
- * Select tagged/untagged.
- */
- lp = sym_lp(np, tp, ccb->lun);
- order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0;
- /*
- * Queue the SCSI IO.
- */
- cp = sym_get_ccb(np, ccb->target, ccb->lun, order);
- if (!cp)
- return 1; /* Means resource shortage */
- (void) sym_queue_scsiio(np, ccb, cp);
- return 0;
- }
- /*
- * Setup buffers and pointers that address the CDB.
- */
- static int __inline sym_setup_cdb(hcb_p np, Scsi_Cmnd *ccb, ccb_p cp)
- {
- u32 cmd_ba;
- int cmd_len;
- /*
- * CDB is 16 bytes max.
- */
- if (ccb->cmd_len > sizeof(cp->cdb_buf)) {
- sym_set_cam_status(cp->cam_ccb, CAM_REQ_INVALID);
- return -1;
- }
- bcopy(ccb->cmnd, cp->cdb_buf, ccb->cmd_len);
- cmd_ba = CCB_BA (cp, cdb_buf[0]);
- cmd_len = ccb->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(hcb_p np, Scsi_Cmnd *csio, ccb_p cp)
- {
- int dir;
- tcb_p tp = &np->target[cp->target];
- lcb_p lp = sym_lp(np, tp, cp->lun);
- /*
- * Build the CDB.
- */
- if (sym_setup_cdb(np, csio, cp))
- goto out_abort;
- /*
- * No direction means no data.
- */
- dir = scsi_data_direction(csio);
- if (dir != SCSI_DATA_NONE) {
- cp->segments = sym_scatter (np, cp, csio);
- if (cp->segments < 0) {
- if (cp->segments == -2)
- sym_set_cam_status(csio, CAM_RESRC_UNAVAIL);
- else
- sym_set_cam_status(csio, 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 XXXXXXXXXXXXXXn");
- MDELAY(10000);
- 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, csio);
- return 0;
- }
- /*
- * timer daemon.
- *
- * Misused to keep the driver running when
- * interrupts are not configured correctly.
- */
- static void sym_timer (hcb_p np)
- {
- u_long thistime = ktime_get(0);
- #if LINUX_VERSION_CODE < LinuxVersionCode(2, 4, 0)
- /*
- * If release process in progress, let's go
- * Set the release stage from 1 to 2 to synchronize
- * with the release process.
- */
- if (np->s.release_stage) {
- if (np->s.release_stage == 1)
- np->s.release_stage = 2;
- return;
- }
- #endif
- /*
- * Restart the timer.
- */
- #ifdef SYM_CONF_PCIQ_BROKEN_INTR
- np->s.timer.expires = ktime_get((HZ+99)/100);
- #else
- np->s.timer.expires = ktime_get(SYM_CONF_TIMER_INTERVAL);
- #endif
- 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 (ktime_dif(np->s.settle_time, thistime) <= 0){
- if (sym_verbose >= 2 )
- printk("%s: command processing resumedn",
- 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
- #ifdef SYM_CONF_PCIQ_BROKEN_INTR
- if (INB(nc_istat) & (INTF|SIP|DIP)) {
- /*
- ** Process pending interrupts.
- */
- if (DEBUG_FLAGS & DEBUG_TINY) printk ("{");
- sym_interrupt(np);
- if (DEBUG_FLAGS & DEBUG_TINY) printk ("}");
- }
- #endif /* SYM_CONF_PCIQ_BROKEN_INTR */
- }
- /*
- * PCI BUS error handler.
- */
- void sym_log_bus_error(hcb_p 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%04xn",
- sym_name(np), pci_sts & 0xf900);
- }
- }
- /*
- * Requeue awaiting commands.
- */
- static void sym_requeue_awaiting_cmds(hcb_p np)
- {
- Scsi_Cmnd *cmd;
- ucmd_p ucp = SYM_UCMD_PTR(cmd);
- SYM_QUEHEAD tmp_cmdq;
- int sts;
- sym_que_move(&np->s.wait_cmdq, &tmp_cmdq);
- while ((ucp = (ucmd_p) sym_remque_head(&tmp_cmdq)) != 0) {
- sym_insque_tail(&ucp->link_cmdq, &np->s.busy_cmdq);
- cmd = SYM_SCMD_PTR(ucp);
- sts = sym_queue_command(np, cmd);
- if (sts) {
- sym_remque(&ucp->link_cmdq);
- sym_insque_head(&ucp->link_cmdq, &np->s.wait_cmdq);
- }
- }
- }
- /*
- * Linux entry point of the queuecommand() function
- */
- int sym53c8xx_queue_command (Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *))
- {
- hcb_p np = SYM_SOFTC_PTR(cmd);
- ucmd_p ucp = SYM_UCMD_PTR(cmd);
- u_long flags;
- int sts = 0;
- cmd->scsi_done = done;
- cmd->host_scribble = NULL;
- memset(ucp, 0, sizeof(*ucp));
- SYM_LOCK_HCB(np, flags);
- /*
- * Shorten our settle_time if needed for
- * this command not to time out.
- */
- if (np->s.settle_time_valid && cmd->timeout_per_command) {
- u_long tlimit = ktime_get(cmd->timeout_per_command);
- tlimit = ktime_sub(tlimit, SYM_CONF_TIMER_INTERVAL*2);
- if (ktime_dif(np->s.settle_time, tlimit) > 0) {
- np->s.settle_time = tlimit;
- }
- }
- if (np->s.settle_time_valid || !sym_que_empty(&np->s.wait_cmdq)) {
- sym_insque_tail(&ucp->link_cmdq, &np->s.wait_cmdq);
- goto out;
- }
- sym_insque_tail(&ucp->link_cmdq, &np->s.busy_cmdq);
- sts = sym_queue_command(np, cmd);
- if (sts) {
- sym_remque(&ucp->link_cmdq);
- sym_insque_tail(&ucp->link_cmdq, &np->s.wait_cmdq);
- }
- out:
- SYM_UNLOCK_HCB(np, flags);
- return 0;
- }
- /*
- * Linux entry point of the interrupt handler.
- */
- static void sym53c8xx_intr(int irq, void *dev_id, struct pt_regs * regs)
- {
- unsigned long flags;
- unsigned long flags1;
- hcb_p np = (hcb_p) dev_id;
- if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("[");
- SYM_LOCK_SCSI(np, flags1);
- SYM_LOCK_HCB(np, flags);
- sym_interrupt(np);
- if (!sym_que_empty(&np->s.wait_cmdq) && !np->s.settle_time_valid)
- sym_requeue_awaiting_cmds(np);
- SYM_UNLOCK_HCB(np, flags);
- SYM_UNLOCK_SCSI(np, flags1);
- if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]n");
- }
- /*
- * Linux entry point of the timer handler
- */
- static void sym53c8xx_timer(unsigned long npref)
- {
- hcb_p np = (hcb_p) npref;
- unsigned long flags;
- unsigned long flags1;
- SYM_LOCK_SCSI(np, flags1);
- SYM_LOCK_HCB(np, flags);
- sym_timer(np);
- if (!sym_que_empty(&np->s.wait_cmdq) && !np->s.settle_time_valid)
- sym_requeue_awaiting_cmds(np);
- SYM_UNLOCK_HCB(np, flags);
- SYM_UNLOCK_SCSI(np, flags1);
- }
- /*
- * 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(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 = 0;
- cmd->scsi_done = ep->old_done;
- /* Wake up the eh thread if it wants to sleep */
- if (ep->to_do == SYM_EH_DO_WAIT)
- up(&ep->sem);
- }
- /*
- * scsi_done() alias when error recovery is in progress.
- */
- static void sym_eh_done(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((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, Scsi_Cmnd *cmd)
- {
- hcb_p np = SYM_SOFTC_PTR(cmd);
- unsigned long flags;
- SYM_QUEHEAD *qp;
- int to_do = SYM_EH_DO_IGNORE;
- int sts = -1;
- struct sym_eh_wait eh, *ep = &eh;
- char devname[20];
- sprintf(devname, "%s:%d:%d", sym_name(np), cmd->target, cmd->lun);
- printf_warning("%s: %s operation started.n", devname, opname);
- SYM_LOCK_HCB(np, flags);
- #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 not queued to the core driver -> to complete here */
- FOR_EACH_QUEUED_ELEMENT(&np->s.wait_cmdq, qp) {
- if (SYM_SCMD_PTR(qp) == cmd) {
- to_do = SYM_EH_DO_COMPLETE;
- goto prepare;
- }
- }
- /* This one is queued in some place -> to wait for completion */
- FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) {
- ccb_p cp = sym_que_entry(qp, struct sym_ccb, link_ccbq);
- if (cp->cam_ccb == 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:
- goto finish;
- break;
- case SYM_EH_DO_WAIT:
- #if LINUX_VERSION_CODE > LinuxVersionCode(2,3,0)
- init_MUTEX_LOCKED(&ep->sem);
- #else
- ep->sem = MUTEX_LOCKED;
- #endif
- /* 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->target);
- 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 = 0;
- cmd->scsi_done = ep->old_done;
- to_do = SYM_EH_DO_IGNORE;
- }
- finish:
- 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);
- SYM_UNLOCK_HCB(np, flags);
- /* 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);
- SYM_UNLOCK_SCSI_NORESTORE(np);
- down(&ep->sem);
- SYM_LOCK_SCSI_NOSAVE(np);
- if (ep->timed_out)
- sts = -2;
- }
- printf_warning("%s: %s operation %s.n", devname, 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).
- */
- int sym53c8xx_eh_abort_handler(Scsi_Cmnd *cmd)
- {
- return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd);
- }
- int sym53c8xx_eh_device_reset_handler(Scsi_Cmnd *cmd)
- {
- return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd);
- }
- int sym53c8xx_eh_bus_reset_handler(Scsi_Cmnd *cmd)
- {
- return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd);
- }
- int sym53c8xx_eh_host_reset_handler(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(hcb_p np, int target, int lun, u_short reqtags)
- {
- tcb_p tp = &np->target[target];
- lcb_p lp = sym_lp(np, 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) {
- printf_info("%s:%d:%d: "
- "tagged command queuing %s, command queue depth %d.n",
- sym_name(np), target, lun,
- lp->s.reqtags ? "enabled" : "disabled",
- lp->started_limit);
- }
- }
- #ifdef SYM_LINUX_BOOT_COMMAND_LINE_SUPPORT
- /*
- * 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(hcb_p 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;
- }
- #else
- #define device_queue_depth(np, t, l) (sym_driver_setup.max_tag)
- #endif /* SYM_LINUX_BOOT_COMMAND_LINE_SUPPORT */
- /*
- * Linux entry point for device queue sizing.
- */
- static void
- sym53c8xx_select_queue_depths(struct Scsi_Host *host,
- struct scsi_device *devlist)
- {
- struct scsi_device *device;
- for (device = devlist; device; device = device->next) {
- hcb_p np;
- tcb_p tp;
- lcb_p lp;
- int reqtags;
- if (device->host != host)
- continue;
- np = ((struct host_data *) host->hostdata)->ncb;
- tp = &np->target[device->id];
- /*
- * Get user settings for transfer parameters.
- */
- tp->inq_byte7_valid = (INQ7_SYNC|INQ7_WIDE16);
- sym_update_trans_settings(np, tp);
- /*
- * 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) {
- device->queue_depth = 1;
- continue;
- }
- /*
- * 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;
- device->queue_depth = reqtags ? reqtags : 2;
- #else
- device->queue_depth = reqtags ? SYM_CONF_MAX_TAG : 2;
- #endif
- lp->s.scdev_depth = device->queue_depth;
- sym_tune_dev_queuing(np, device->id, device->lun, reqtags);
- }
- }
- /*
- * Linux entry point for info() function
- */
- 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 (hcb_p np, struct sym_usrcmd *uc)
- {
- tcb_p 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->tinfo.goal.options = 0;
- tp->tinfo.goal.offset = 0;
- break;
- }
- if (uc->data <= 9 && np->minsync_dt) {
- if (uc->data < np->minsync_dt)
- uc->data = np->minsync_dt;
- tp->tinfo.goal.options = PPR_OPT_DT;
- tp->tinfo.goal.width = 1;
- tp->tinfo.goal.period = uc->data;
- tp->tinfo.goal.offset = np->maxoffs_dt;
- }
- else {
- if (uc->data < np->minsync)
- uc->data = np->minsync;
- tp->tinfo.goal.options = 0;
- tp->tinfo.goal.period = uc->data;
- tp->tinfo.goal.offset = np->maxoffs;
- }
- break;
- case UC_SETWIDE:
- tp->tinfo.goal.width = uc->data ? 1 : 0;
- break;
- case UC_SETTAGS:
- for (l = 0; l < SYM_CONF_MAX_LUN; l++)
- sym_tune_dev_queuing(np, t,l, uc->data);
- break;
- case UC_RESETDEV:
- tp->to_reset = 1;
- np->istat_sem = SEM;
- OUTB (nc_istat, SIGP|SEM);
- break;
- case UC_CLEARDEV:
- for (l = 0; l < SYM_CONF_MAX_LUN; l++) {
- lcb_p lp = sym_lp(np, tp, l);
- if (lp) lp->to_clear = 1;
- }
- np->istat_sem = SEM;
- OUTB (nc_istat, SIGP|SEM);
- break;
- case UC_SETFLAG:
- tp->usrflags = uc->data;
- break;
- }
- }
- break;
- }
- }
- #define is_digit(c) ((c) >= '0' && (c) <= '9')
- #define digit_to_bin(c) ((c) - '0')
- #define is_space(c) ((c) == ' ' || (c) == 't')
- static int skip_spaces(char *ptr, int len)
- {
- int cnt, c;
- for (cnt = len; cnt > 0 && (c = *ptr++) && is_space(c); cnt--);
- return (len - cnt);
- }
- static int get_int_arg(char *ptr, int len, u_long *pv)
- {
- int cnt, c;
- u_long v;
- for (v = 0, cnt = len; cnt > 0 && (c = *ptr++) && is_digit(c); cnt--) {
- v = (v * 10) + digit_to_bin(c);
- }
- if (pv)
- *pv = v;
- return (len - cnt);
- }
- static int is_keyword(char *ptr, int len, char *verb)
- {
- int verb_len = strlen(verb);
- if (len >= strlen(verb) && !memcmp(verb, ptr, verb_len))
- return verb_len;
- else
- return 0;
- }
- #define SKIP_SPACES(min_spaces)
- if ((arg_len = skip_spaces(ptr, len)) < (min_spaces))
- return -EINVAL;
- ptr += arg_len; len -= arg_len;
- #define GET_INT_ARG(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(hcb_p np, char *buffer, int length)
- {
- char *ptr = buffer;
- int len = length;
- struct sym_usrcmd cmd, *uc = &cmd;
- int arg_len;
- u_long target;
- bzero(uc, 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=%ldn", 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(1);
- if ((arg_len = is_keyword(ptr, len, "all")) != 0) {
- ptr += arg_len; len -= arg_len;
- uc->target = ~0;
- } else {
- GET_INT_ARG(target);
- uc->target = (1<<target);
- #ifdef DEBUG_PROC_INFO
- printk("sym_user_command: target=%ldn", target);
- #endif
- }
- break;
- }
- switch(uc->cmd) {
- case UC_SETVERBOSE:
- case UC_SETSYNC:
- case UC_SETTAGS:
- case UC_SETWIDE:
- SKIP_SPACES(1);
- GET_INT_ARG(uc->data);
- #ifdef DEBUG_PROC_INFO
- printk("sym_user_command: data=%ldn", uc->data);
- #endif
- break;
- #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
- case UC_SETDEBUG:
- while (len > 0) {
- SKIP_SPACES(1);
- 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=%ldn", uc->data);
- #endif
- break;
- #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
- case UC_SETFLAG:
- while (len > 0) {
- SKIP_SPACES(1);
- 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 {
- long flags;
- SYM_LOCK_HCB(np, flags);
- sym_exec_user_command (np, uc);
- SYM_UNLOCK_HCB(np, 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(hcb_p 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%xn",
- np->s.chip_name, np->device_id, np->revision_id);
- copy_info(&info, "On PCI bus %d, device %d, function %d, "
- #ifdef __sparc__
- "IRQ %sn",
- #else
- "IRQ %dn",
- #endif
- np->s.bus, (np->s.device_fn & 0xf8) >> 3, np->s.device_fn & 7,
- #ifdef __sparc__
- __irq_itoa(np->s.irq));
- #else
- (int) np->s.irq);
- #endif
- copy_info(&info, "Min. period factor %d, %s SCSI BUS%sn",
- (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 %dn",
- 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(char *buffer, char **start, off_t offset,
- int length, int hostno, int func)
- {
- struct Scsi_Host *host;
- struct host_data *host_data;
- hcb_p np = 0;
- int retv;
- for (host = first_host; host; host = host->next) {
- if (host->hostt != first_host->hostt)
- continue;
- if (host->host_no == hostno) {
- host_data = (struct host_data *) host->hostdata;
- np = host_data->ncb;
- break;
- }
- }
- if (!np)
- return -EINVAL;
- 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(hcb_p np)
- {
- /*
- * Free O/S specific resources.
- */
- if (np->s.irq)
- free_irq(np->s.irq, np);
- if (np->s.io_port)
- release_region(np->s.io_port, np->s.io_ws);
- #ifndef SYM_OPT_NO_BUS_MEMORY_MAPPING
- if (np->s.mmio_va)
- pci_unmap_mem(np->s.mmio_va, np->s.io_ws);
- if (np->s.ram_va)
- pci_unmap_mem(np->s.ram_va, np->ram_ws);
- #endif
- /*
- * Free O/S independant resources.
- */
- sym_hcb_free(np);
- sym_mfree_dma(np, sizeof(*np), "HCB");
- }
- /*
- * Ask/tell the system about DMA addressing.
- */
- #ifdef SYM_LINUX_DYNAMIC_DMA_MAPPING
- static int sym_setup_bus_dma_mask(hcb_p np)
- {
- #if LINUX_VERSION_CODE < LinuxVersionCode(2,4,3)
- if (!pci_dma_supported(np->s.device, 0xffffffffUL))
- goto out_err32;
- #else
- #if SYM_CONF_DMA_ADDRESSING_MODE == 0
- if (pci_set_dma_mask(np->s.device, 0xffffffffUL))
- goto out_err32;
- #else
- #if SYM_CONF_DMA_ADDRESSING_MODE == 1
- #define PciDmaMask 0xffffffffff
- #elif SYM_CONF_DMA_ADDRESSING_MODE == 2
- #define PciDmaMask 0xffffffffffffffff
- #endif
- if (np->features & FE_DAC) {
- if (!pci_set_dma_mask(np->s.device, PciDmaMask)) {
- np->use_dac = 1;
- printf_info("%s: using 64 bit DMA addressingn",
- sym_name(np));
- }
- else {
- if (pci_set_dma_mask(np->s.device, 0xffffffffUL))
- goto out_err32;
- }
- }
- #undef PciDmaMask
- #endif
- #endif
- return 0;
- out_err32:
- printf_warning("%s: 32 BIT DMA ADDRESSING NOT SUPPORTEDn",
- sym_name(np));
- return -1;
- }
- #endif /* SYM_LINUX_DYNAMIC_DMA_MAPPING */
- /*
- * Host attach and initialisations.
- *
- * Allocate host data and ncb structure.
- * Request IO region and remap MMIO region.
- * Do chip initialization.
- * If all is OK, install interrupt handling and
- * start the timer daemon.
- */
- static int __init
- sym_attach (Scsi_Host_Template *tpnt, int unit, sym_device *dev)
- {
- struct host_data *host_data;
- hcb_p np = 0;
- struct Scsi_Host *instance = 0;
- u_long flags = 0;
- sym_nvram *nvram = dev->nvram;
- struct sym_fw *fw;
- printk(KERN_INFO
- "sym%d: <%s> rev 0x%x on pci bus %d device %d function %d "
- #ifdef __sparc__
- "irq %sn",
- #else
- "irq %dn",
- #endif
- unit, dev->chip.name, dev->chip.revision_id,
- dev->s.bus, (dev->s.device_fn & 0xf8) >> 3,
- dev->s.device_fn & 7,
- #ifdef __sparc__
- __irq_itoa(dev->s.irq));
- #else
- dev->s.irq);
- #endif
- /*
- * Get the firmware for this chip.
- */
- fw = sym_find_firmware(&dev->chip);
- if (!fw)
- goto attach_failed;
- /*
- * Allocate host_data structure
- */
- if (!(instance = scsi_register(tpnt, sizeof(*host_data))))
- 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.
- */
- #ifdef SYM_LINUX_DYNAMIC_DMA_MAPPING
- np = __sym_calloc_dma(dev->pdev, sizeof(*np), "HCB");
- if (np) {
- np->s.device = dev->pdev;
- np->bus_dmat = dev->pdev; /* Result in 1 DMA pool per HBA */
- }
- else
- goto attach_failed;
- #else
- np = sym_calloc_dma(sizeof(*np), "HCB");
- if (!np)
- goto attach_failed;
- #endif
- host_data->ncb = np;
- SYM_INIT_LOCK_HCB(np);
- /*
- * Copy some useful infos to the HCB.
- */
- np->hcb_ba = vtobus(np);
- np->verbose = sym_driver_setup.verbose;
- np->s.device = dev->pdev;
- np->s.unit = unit;
- np->device_id = dev->chip.device_id;
- np->revision_id = dev->chip.revision_id;
- np->s.bus = dev->s.bus;
- np->s.device_fn = dev->s.device_fn;
- 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.
- */
- strncpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name)-1);
- sprintf(np->s.inst_name, "sym%d", np->s.unit);
- /*
- * Ask/tell the system about DMA addressing.
- */
- #ifdef SYM_LINUX_DYNAMIC_DMA_MAPPING
- if (sym_setup_bus_dma_mask(np))
- goto attach_failed;
- #endif
- /*
- * Try to map the controller chip to
- * virtual and physical memory.
- */
- np->mmio_ba = (u32)dev->s.base;
- np->s.io_ws = (np->features & FE_IO256)? 256 : 128;
- #ifndef SYM_CONF_IOMAPPED
- np->s.mmio_va = pci_map_mem(dev->s.base_c, np->s.io_ws);
- if (!np->s.mmio_va) {
- printf_err("%s: can't map PCI MMIO regionn", sym_name(np));
- goto attach_failed;
- }
- else if (sym_verbose > 1)
- printf_info("%s: using memory mapped IOn", sym_name(np));
- #endif /* !defined SYM_CONF_IOMAPPED */
- /*
- * Try to map the controller chip into iospace.
- */
- if (dev->s.io_port) {
- request_region(dev->s.io_port, np->s.io_ws, NAME53C8XX);
- np->s.io_port = dev->s.io_port;
- }
- /*
- * Map on-chip RAM if present and supported.
- */
- if (!(np->features & FE_RAM))
- dev->s.base_2 = 0;
- if (dev->s.base_2) {
- np->ram_ba = (u32)dev->s.base_2;
- if (np->features & FE_RAM8K)
- np->ram_ws = 8192;
- else
- np->ram_ws = 4096;
- #ifndef SYM_OPT_NO_BUS_MEMORY_MAPPING
- np->s.ram_va = pci_map_mem(dev->s.base_2_c, np->ram_ws);
- if (!np->s.ram_va) {
- printf_err("%s: can't map PCI MEMORY regionn",
- sym_name(np));
- goto attach_failed;
- }
- #endif
- }
- /*
- * Perform O/S independant stuff.
- */
- if (sym_hcb_attach(np, fw, nvram))
- goto attach_failed;
- /*
- * Install the interrupt handler.
- * If we synchonize the C code with SCRIPTS on interrupt,
- * we donnot want to share the INTR line at all.
- */
- if (request_irq(dev->s.irq, sym53c8xx_intr, SA_SHIRQ,
- NAME53C8XX, np)) {
- printf_err("%s: request irq %d failuren",
- sym_name(np), dev->s.irq);
- goto attach_failed;
- }
- np->s.irq = dev->s.irq;
- /*
- * After SCSI devices have been opened, we cannot
- * reset the bus safely, so we do it here.
- */
- SYM_LOCK_HCB(np, flags);
- if (sym_reset_scsi_bus(np, 0)) {
- printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
- "TERMINATION, DEVICE POWER etc.!n", sym_name(np));
- SYM_UNLOCK_HCB(np, flags);
- goto attach_failed;
- }
- /*
- * Initialize some queue headers.
- */
- sym_que_init(&np->s.wait_cmdq);
- sym_que_init(&np->s.busy_cmdq);
- /*
- * 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);
- /*
- * Done.
- */
- if (!first_host)
- first_host = instance;
- /*
- * 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;
- #ifndef SYM_CONF_IOMAPPED
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,3,29)
- instance->base = (unsigned long) np->s.mmio_va;
- #else
- instance->base = (char *) np->s.mmio_va;
- #endif
- #endif
- instance->irq = np->s.irq;
- instance->unique_id = np->s.io_port;
- instance->io_port = np->s.io_port;
- instance->n_io_port = np->s.io_ws;
- instance->dma_channel = 0;
- instance->cmd_per_lun = SYM_CONF_MAX_TAG;
- instance->can_queue = (SYM_CONF_MAX_START-2);
- instance->sg_tablesize = SYM_CONF_MAX_SG;
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,4,0)
- instance->max_cmd_len = 16;
- #endif
- instance->select_queue_depths = sym53c8xx_select_queue_depths;
- instance->highmem_io = 1;
- SYM_UNLOCK_HCB(np, flags);
- scsi_set_pci_device(instance, dev->pdev);
- /*
- * Now let the generic SCSI driver
- * look for the SCSI devices on the bus ..
- */
- return 0;
- attach_failed:
- if (!instance) return -1;
- printf_info("%s: giving up ...n", sym_name(np));
- if (np)
- sym_free_resources(np);
- scsi_unregister(instance);
- return -1;
- }
- /*
- * Detect and try to read SYMBIOS and TEKRAM NVRAM.
- */
- #if SYM_CONF_NVRAM_SUPPORT
- static void __init sym_get_nvram(sym_device *devp, sym_nvram *nvp)
- {
- if (!nvp)
- return;
- devp->nvram = nvp;
- devp->device_id = devp->chip.device_id;
- nvp->type = 0;
- /*
- * Get access to chip IO registers
- */
- #ifdef SYM_CONF_IOMAPPED
- request_region(devp->s.io_port, 128, NAME53C8XX);
- #else
- devp->s.mmio_va = pci_map_mem(devp->s.base_c, 128);
- if (!devp->s.mmio_va)
- return;
- #endif
- /*
- * Try to read SYMBIOS|TEKRAM nvram.
- */
- (void) sym_read_nvram(devp, nvp);
- /*
- * Release access to chip IO registers
- */
- #ifdef SYM_CONF_IOMAPPED
- release_region(devp->s.io_port, 128);
- #else
- pci_unmap_mem((u_long) devp->s.mmio_va, 128ul);
- #endif
- }
- #endif /* SYM_CONF_NVRAM_SUPPORT */
- /*
- * Driver setup from the boot command line
- */
- #ifdef SYM_LINUX_BOOT_COMMAND_LINE_SUPPORT
- static struct sym_driver_setup
- sym_driver_safe_setup __initdata = SYM_LINUX_DRIVER_SAFE_SETUP;
- #ifdef MODULE
- char *sym53c8xx = 0; /* command line passed by insmod */
- MODULE_PARM(sym53c8xx, "s");
- #endif
- static void __init sym53c8xx_print_driver_setup(void)
- {
- printf_info (NAME53C8XX ": setup="
- "mpar:%d,spar:%d,tags:%d,sync:%d,burst:%d,"
- "led:%d,wide:%d,diff:%d,irqm:%d, buschk:%dn",
- sym_driver_setup.pci_parity,
- sym_driver_setup.scsi_parity,
- sym_driver_setup.max_tag,
- sym_driver_setup.min_sync,
- sym_driver_setup.burst_order,
- sym_driver_setup.scsi_led,
- sym_driver_setup.max_wide,
- sym_driver_setup.scsi_diff,
- sym_driver_setup.irq_mode,
- sym_driver_setup.scsi_bus_check);
- printf_info (NAME53C8XX ": setup="
- "hostid:%d,offs:%d,luns:%d,pcifix:%d,revprob:%d,"
- "verb:%d,debug:0x%x,setlle_delay:%dn",
- sym_driver_setup.host_id,
- sym_driver_setup.max_offs,
- sym_driver_setup.max_lun,
- sym_driver_setup.pci_fix_up,
- sym_driver_setup.reverse_probe,
- sym_driver_setup.verbose,
- sym_driver_setup.debug,
- sym_driver_setup.settle_delay);
- #ifdef DEBUG_2_0_X
- MDELAY(5000);
- #endif
- };
- #define OPT_PCI_PARITY 1
- #define OPT_SCSI_PARITY 2
- #define OPT_MAX_TAG 3
- #define OPT_MIN_SYNC 4
- #define OPT_BURST_ORDER 5
- #define OPT_SCSI_LED 6
- #define OPT_MAX_WIDE 7
- #define OPT_SCSI_DIFF 8
- #define OPT_IRQ_MODE 9
- #define OPT_SCSI_BUS_CHECK 10
- #define OPT_HOST_ID 11
- #define OPT_MAX_OFFS 12
- #define OPT_MAX_LUN 13
- #define OPT_PCI_FIX_UP 14
- #define OPT_REVERSE_PROBE 15
- #define OPT_VERBOSE 16
- #define OPT_DEBUG 17
- #define OPT_SETTLE_DELAY 18
- #define OPT_USE_NVRAM 19
- #define OPT_EXCLUDE 20
- #define OPT_SAFE_SETUP 21
- static char setup_token[] __initdata =
- "mpar:" "spar:"
- "tags:" "sync:"
- "burst:" "led:"
- "wide:" "diff:"
- "irqm:" "buschk:"
- "hostid:" "offset:"
- "luns:" "pcifix:"
- "revprob:" "verb:"
- "debug:" "settle:"
- "nvram:" "excl:"
- "safe:"
- ;
- #ifdef MODULE
- #define ARG_SEP ' '
- #else
- #define ARG_SEP ','
- #endif
- static int __init get_setup_token(char *p)
- {
- char *cur = setup_token;
- char *pc;
- int i = 0;
- while (cur != NULL && (pc = strchr(cur, ':')) != NULL) {
- ++pc;
- ++i;
- if (!strncmp(p, cur, pc - cur))
- return i;
- cur = pc;
- }
- return 0;
- }
- #endif /* SYM_LINUX_BOOT_COMMAND_LINE_SUPPORT */
- int __init sym53c8xx_setup(char *str)
- {
- #ifdef SYM_LINUX_BOOT_COMMAND_LINE_SUPPORT
- char *cur = str;
- char *pc, *pv;
- unsigned long val;
- int i, c;
- int xi = 0;
- while (cur != NULL && (pc = strchr(cur, ':')) != NULL) {
- char *pe;
- val = 0;
- pv = pc;
- c = *++pv;
- if (c == 'n')
- val = 0;
- else if (c == 'y')
- val = 1;
- else
- val = (int) simple_strtoul(pv, &pe, 0);
- switch (get_setup_token(cur)) {
- case OPT_MAX_TAG:
- sym_driver_setup.max_tag = val;
- if (!(pe && *pe == '/'))
- break;
- i = 0;
- while (*pe && *pe != ARG_SEP &&
- i < sizeof(sym_driver_setup.tag_ctrl)-1) {
- sym_driver_setup.tag_ctrl[i++] = *pe++;
- }
- sym_driver_setup.tag_ctrl[i] = ' ';
- break;
- case OPT_SAFE_SETUP:
- memcpy(&sym_driver_setup, &sym_driver_safe_setup,
- sizeof(sym_driver_setup));
- break;
- case OPT_EXCLUDE:
- if (xi < 8)
- sym_driver_setup.excludes[xi++] = val;
- break;
- #define __SIMPLE_OPTION(NAME, name)
- case OPT_ ## NAME :
- sym_driver_setup.name = val;
- break;
- __SIMPLE_OPTION(PCI_PARITY, pci_parity)
- __SIMPLE_OPTION(SCSI_PARITY, scsi_parity)
- __SIMPLE_OPTION(MIN_SYNC, min_sync)
- __SIMPLE_OPTION(BURST_ORDER, burst_order)
- __SIMPLE_OPTION(SCSI_LED, scsi_led)
- __SIMPLE_OPTION(MAX_WIDE, max_wide)
- __SIMPLE_OPTION(SCSI_DIFF, scsi_diff)
- __SIMPLE_OPTION(IRQ_MODE, irq_mode)
- __SIMPLE_OPTION(SCSI_BUS_CHECK, scsi_bus_check)
- __SIMPLE_OPTION(HOST_ID, host_id)
- __SIMPLE_OPTION(MAX_OFFS, max_offs)
- __SIMPLE_OPTION(MAX_LUN, max_lun)
- __SIMPLE_OPTION(PCI_FIX_UP, pci_fix_up)
- __SIMPLE_OPTION(REVERSE_PROBE, reverse_probe)
- __SIMPLE_OPTION(VERBOSE, verbose)
- __SIMPLE_OPTION(DEBUG, debug)
- __SIMPLE_OPTION(SETTLE_DELAY, settle_delay)
- __SIMPLE_OPTION(USE_NVRAM, use_nvram)
- #undef __SIMPLE_OPTION
- default:
- printk("sym53c8xx_setup: unexpected boot option '%.*s' ignoredn", (int)(pc-cur+1), cur);
- break;
- }
- if ((cur = strchr(cur, ARG_SEP)) != NULL)
- ++cur;
- }
- #endif /* SYM_LINUX_BOOT_COMMAND_LINE_SUPPORT */
- return 1;
- }
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,3,13)
- #ifndef MODULE
- __setup("sym53c8xx=", sym53c8xx_setup);
- #endif
- #endif
- #ifdef SYM_CONF_PQS_PDS_SUPPORT
- /*
- * Detect all NCR PQS/PDS boards and keep track of their bus nr.
- *
- * The NCR PQS or PDS card is constructed as a DEC bridge
- * behind which sit a proprietary NCR memory controller and
- * four or two 53c875s as separate devices. In its usual mode
- * of operation, the 875s are slaved to the memory controller
- * for all transfers. 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. 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
- */
- #ifndef SYM_CONF_MAX_PQS_BUS
- #define SYM_CONF_MAX_PQS_BUS 16
- #endif
- static int pqs_bus[SYM_CONF_MAX_PQS_BUS] __initdata = { 0 };
- static void __init sym_detect_pqs_pds(void)
- {
- short index;
- pcidev_t dev = PCIDEV_NULL;
- for(index=0; index < SYM_CONF_MAX_PQS_BUS; index++) {
- u_char tmp;
- dev = pci_find_device(0x101a, 0x0009, dev);
- if (dev == PCIDEV_NULL) {
- pqs_bus[index] = -1;
- break;
- }
- printf_info(NAME53C8XX ": NCR PQS/PDS memory controller detected on bus %dn", PciBusNumber(dev));
- pci_read_config_byte(dev, 0x44, &tmp);
- /* bit 1: allow individual 875 configuration */
- tmp |= 0x2;
- pci_write_config_byte(dev, 0x44, tmp);
- pci_read_config_byte(dev, 0x45, &tmp);
- /* bit 2: drive individual 875 interrupts to the bus */
- tmp |= 0x4;
- pci_write_config_byte(dev, 0x45, tmp);
- pqs_bus[index] = PciBusNumber(dev);
- }
- }
- #endif /* SYM_CONF_PQS_PDS_SUPPORT */
- /*
- * Read and check the PCI configuration for any detected NCR
- * boards and save data for attaching after all boards have
- * been detected.
- */
- static int __init
- sym53c8xx_pci_init(Scsi_Host_Template *tpnt, pcidev_t pdev, sym_device *device)
- {
- u_short vendor_id, device_id, command, status_reg;
- u_char cache_line_size;
- u_char suggested_cache_line_size = 0;
- u_char pci_fix_up = SYM_SETUP_PCI_FIX_UP;
- u_char revision;
- u_int irq;
- u_long base, base_2, base_io;
- u_long base_c, base_2_c, io_port;
- int i;
- sym_chip *chip;
- /* Choose some short name for this device */
- sprintf(device->s.inst_name, "sym.%d.%d.%d",
- PciBusNumber(pdev),
- (int) (PciDeviceFn(pdev) & 0xf8) >> 3,
- (int) (PciDeviceFn(pdev) & 7));
- /*
- * Read needed minimal info from the PCI config space.
- */
- vendor_id = PciVendorId(pdev);
- device_id = PciDeviceId(pdev);
- irq = PciIrqLine(pdev);
- i = pci_get_base_address(pdev, 0, &base_io);
- io_port = pci_get_base_cookie(pdev, 0);
- base_c = pci_get_base_cookie(pdev, i);
- i = pci_get_base_address(pdev, i, &base);
- base_2_c = pci_get_base_cookie(pdev, i);
- (void) pci_get_base_address(pdev, i, &base_2);
- io_port &= PCI_BASE_ADDRESS_IO_MASK;
- base &= PCI_BASE_ADDRESS_MEM_MASK;
- base_2 &= PCI_BASE_ADDRESS_MEM_MASK;
- pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
- /*
- * If user excluded this chip, donnot initialize it.
- */
- if (base_io) {
- for (i = 0 ; i < 8 ; i++) {
- if (sym_driver_setup.excludes[i] == base_io)
- return -1;
- }
- }
- /*
- * Leave here if another driver attached the chip.
- */
- if (io_port && check_region (io_port, 128)) {
- printf_info("%s: IO region 0x%lx[0..127] is in usen",
- sym_name(device), (long) io_port);
- return -1;
- }
- /*
- * Check if the chip is supported.
- */
- chip = sym_lookup_pci_chip_table(device_id, revision);
- if (!chip) {
- printf_info("%s: device not supportedn", sym_name(device));
- return -1;
- }
- /*
- * Check if the chip has been assigned resources we need.
- */
- #ifdef SYM_CONF_IOMAPPED
- if (!io_port) {
- printf_info("%s: IO base address disabled.n",
- sym_name(device));
- return -1;
- }
- #else
- if (!base) {
- printf_info("%s: MMIO base address disabled.n",
- sym_name(device));
- return -1;
- }
- #endif
- /*
- * Ignore Symbios chips controlled by various RAID controllers.
- * These controllers set value 0x52414944 at RAM end - 16.
- */
- #if defined(__i386__) && !defined(SYM_OPT_NO_BUS_MEMORY_MAPPING)
- if (base_2_c) {
- unsigned int ram_size, ram_val;
- u_long ram_ptr;
- if (chip->features & FE_RAM8K)
- ram_size = 8192;
- else
- ram_size = 4096;
- ram_ptr = pci_map_mem(base_2_c, ram_size);
- if (ram_ptr) {
- ram_val = readl_raw(ram_ptr + ram_size - 16);
- pci_unmap_mem(ram_ptr, ram_size);
- if (ram_val == 0x52414944) {
- printf_info("%s: not initializing, "
- "driven by RAID controller.n",
- sym_name(device));
- return -1;
- }
- }
- }
- #endif /* i386 and PCI MEMORY accessible */
- /*
- * Copy the chip description to our device structure,
- * so we can make it match the actual device and options.
- */
- bcopy(chip, &device->chip, sizeof(device->chip));
- device->chip.revision_id = revision;
- /*
- * Read additionnal info from the configuration space.
- */
- pci_read_config_word(pdev, PCI_COMMAND, &command);
- pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line_size);
- /*
- * Enable missing capabilities in the PCI COMMAND register.
- */
- #ifdef SYM_CONF_IOMAPPED
- #define PCI_COMMAND_BITS_TO_ENABLE (PCI_COMMAND_IO |
- PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_PARITY)
- #else
- #define PCI_COMMAND_BITS_TO_ENABLE
- (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_PARITY)
- #endif
- if ((command & PCI_COMMAND_BITS_TO_ENABLE)
- != PCI_COMMAND_BITS_TO_ENABLE) {
- printf_info("%s: setting%s%s%s%s...n", sym_name(device),
- (command & PCI_COMMAND_IO) ? "" : " PCI_COMMAND_IO",
- (command & PCI_COMMAND_MEMORY) ? "" : " PCI_COMMAND_MEMORY",
- (command & PCI_COMMAND_MASTER) ? "" : " PCI_COMMAND_MASTER",
- (command & PCI_COMMAND_PARITY) ? "" : " PCI_COMMAND_PARITY");
- command |= PCI_COMMAND_BITS_TO_ENABLE;
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
- #undef PCI_COMMAND_BITS_TO_ENABLE
- /*
- * If cache line size is not configured, suggest
- * a value for well known CPUs.
- */
- #if defined(__i386__) && !defined(MODULE)
- if (!cache_line_size && boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) {
- switch(boot_cpu_data.x86) {
- case 4: suggested_cache_line_size = 4; break;
- case 6: if (boot_cpu_data.x86_model > 8) break;
- case 5: suggested_cache_line_size = 8; break;
- }
- }
- #endif /* __i386__ */
- /*
- * Some features are required to be enabled in order to
- * work around some chip problems. :) ;)
- * (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 (device_id == PCI_DEVICE_ID_NCR_53C896 && revision < 0x4) {
- chip->features |= (FE_WRIE | FE_CLSE);
- pci_fix_up |= 3; /* Force appropriate PCI fix-up */
- }
- #ifdef SYM_CONF_PCI_FIX_UP
- /*
- * Try to fix up PCI config according to wished features.
- */
- if ((pci_fix_up & 1) && (chip->features & FE_CLSE) &&
- !cache_line_size && suggested_cache_line_size) {
- cache_line_size = suggested_cache_line_size;
- pci_write_config_byte(pdev,
- PCI_CACHE_LINE_SIZE, cache_line_size);
- printf_info("%s: PCI_CACHE_LINE_SIZE set to %d.n",
- sym_name(device), cache_line_size);
- }
- if ((pci_fix_up & 2) && cache_line_size &&
- (chip->features & FE_WRIE) && !(command & PCI_COMMAND_INVALIDATE)) {
- printf_info("%s: setting PCI_COMMAND_INVALIDATE.n",
- sym_name(device));
- command |= PCI_COMMAND_INVALIDATE;
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
- #endif /* SYM_CONF_PCI_FIX_UP */
- /*
- * 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);
- }
- }
- /*
- * Initialise device structure with items required by sym_attach.
- */
- device->pdev = pdev;
- device->s.bus = PciBusNumber(pdev);
- device->s.device_fn = PciDeviceFn(pdev);
- device->s.base = base;
- device->s.base_2 = base_2;
- device->s.base_c = base_c;
- device->s.base_2_c = base_2_c;
- device->s.io_port = io_port;
- device->s.irq = irq;
- device->attach_done = 0;
- return 0;
- }
- /*
- * List of supported NCR chip ids
- */
- static u_short sym_chip_ids[] __initdata = {
- PCI_ID_SYM53C810,
- PCI_ID_SYM53C815,
- PCI_ID_SYM53C825,
- PCI_ID_SYM53C860,
- PCI_ID_SYM53C875,
- PCI_ID_SYM53C875_2,
- PCI_ID_SYM53C885,
- PCI_ID_SYM53C875A,
- PCI_ID_SYM53C895,
- PCI_ID_SYM53C896,
- PCI_ID_SYM53C895A,
- PCI_ID_LSI53C1510D,
- PCI_ID_LSI53C1010,
- PCI_ID_LSI53C1010_2
- };
- /*
- * Detect all 53c8xx hosts and then attach them.
- *
- * If we are using NVRAM, once all hosts are detected, we need to
- * check any NVRAM for boot order in case detect and boot order
- * differ and attach them using the order in the NVRAM.
- *
- * If no NVRAM is found or data appears invalid attach boards in
- * the order they are detected.
- */
- int __init sym53c8xx_detect(Scsi_Host_Template *tpnt)
- {
- pcidev_t pcidev;
- int i, j, chips, hosts, count;
- int attach_count = 0;
- sym_device *devtbl, *devp;
- sym_nvram nvram;
- #if SYM_CONF_NVRAM_SUPPORT
- sym_nvram nvram0, *nvp;
- #endif
- /*
- * PCI is required.
- */
- if (!pci_present())
- return 0;
- /*
- * Initialize driver general stuff.
- */
- #ifdef SYM_LINUX_PROC_INFO_SUPPORT
- #if LINUX_VERSION_CODE < LinuxVersionCode(2,3,27)
- tpnt->proc_dir = &proc_scsi_sym53c8xx;
- #else
- tpnt->proc_name = NAME53C8XX;
- #endif
- tpnt->proc_info = sym53c8xx_proc_info;
- #endif
- #ifdef SYM_LINUX_BOOT_COMMAND_LINE_SUPPORT
- #ifdef MODULE
- if (sym53c8xx)
- sym53c8xx_setup(sym53c8xx);
- #endif
- #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
- sym_debug_flags = sym_driver_setup.debug;
- #endif
- if (boot_verbose >= 2)
- sym53c8xx_print_driver_setup();
- #endif /* SYM_LINUX_BOOT_COMMAND_LINE_SUPPORT */
- /*
- * Allocate the device table since we donnot want to
- * overflow the kernel stack.
- * 1 x 4K PAGE is enough for more than 40 devices for i386.
- */
- devtbl = sym_calloc(PAGE_SIZE, "DEVTBL");
- if (!devtbl)
- return 0;
- /*
- * Detect all NCR PQS/PDS memory controllers.
- */
- #ifdef SYM_CONF_PQS_PDS_SUPPORT
- sym_detect_pqs_pds();
- #endif
- /*
- * Detect all 53c8xx hosts.
- * Save the first Symbios NVRAM content if any
- * for the boot order.
- */
- chips = sizeof(sym_chip_ids) / sizeof(sym_chip_ids[0]);
- hosts = PAGE_SIZE / sizeof(*devtbl);
- #if SYM_CONF_NVRAM_SUPPORT
- nvp = (sym_driver_setup.use_nvram & 0x1) ? &nvram0 : 0;
- #endif
- j = 0;
- count = 0;
- pcidev = PCIDEV_NULL;
- while (1) {
- char *msg = "";
- if (count >= hosts)
- break;
- if (j >= chips)
- break;
- i = sym_driver_setup.reverse_probe ? chips - 1 - j : j;
- pcidev = pci_find_device(PCI_VENDOR_ID_NCR, sym_chip_ids[i],
- pcidev);
- if (pcidev == PCIDEV_NULL) {
- ++j;
- continue;
- }
- /* This one is guaranteed by AC to do nothing :-) */
- if (pci_enable_device(pcidev))
- continue;
- /* Some HW as the HP LH4 may report twice PCI devices */
- for (i = 0; i < count ; i++) {
- if (devtbl[i].s.bus == PciBusNumber(pcidev) &&
- devtbl[i].s.device_fn == PciDeviceFn(pcidev))
- break;
- }
- if (i != count) /* Ignore this device if we already have it */
- continue;
- devp = &devtbl[count];
- devp->host_id = SYM_SETUP_HOST_ID;
- devp->attach_done = 0;
- if (sym53c8xx_pci_init(tpnt, pcidev, devp)) {
- continue;
- }
- ++count;
- #if SYM_CONF_NVRAM_SUPPORT
- if (nvp) {
- sym_get_nvram(devp, nvp);
- switch(nvp->type) {
- case SYM_SYMBIOS_NVRAM:
- /*
- * Switch to the other nvram buffer, so that
- * nvram0 will contain the first Symbios
- * format NVRAM content with boot order.
- */
- nvp = &nvram;
- msg = "with Symbios NVRAM";
- break;
- case SYM_TEKRAM_NVRAM:
- msg = "with Tekram NVRAM";
- break;
- }
- }
- #endif
- #ifdef SYM_CONF_PQS_PDS_SUPPORT
- /*
- * Match the BUS number for PQS/PDS devices.
- * Read the SCSI ID from a special register mapped
- * into the configuration space of the individual
- * 875s. This register is set up by the PQS bios
- */
- for(i = 0; i < SYM_CONF_MAX_PQS_BUS && pqs_bus[i] != -1; i++) {
- u_char tmp;
- if (pqs_bus[i] == PciBusNumber(pcidev)) {
- pci_read_config_byte(pcidev, 0x84, &tmp);
- devp->pqs_pds = 1;
- devp->host_id = tmp;
- break;
- }
- }
- if (devp->pqs_pds)
- msg = "(NCR PQS/PDS)";
- #endif
- if (boot_verbose)
- printf_info("%s: 53c%s detected %sn",
- sym_name(devp), devp->chip.name, msg);
- }
- /*
- * If we have found a SYMBIOS NVRAM, use first the NVRAM boot
- * sequence as device boot order.
- * check devices in the boot record against devices detected.
- * attach devices if we find a match. boot table records that
- * do not match any detected devices will be ignored.
- * devices that do not match any boot table will not be attached
- * here but will attempt to be attached during the device table
- * rescan.
- */
- #if SYM_CONF_NVRAM_SUPPORT
- if (!nvp || nvram0.type != SYM_SYMBIOS_NVRAM)
- goto next;
- for (i = 0; i < 4; i++) {
- Symbios_host *h = &nvram0.data.Symbios.host[i];
- for (j = 0 ; j < count ; j++) {
- devp = &devtbl[j];
- if (h->device_fn != devp->s.device_fn ||
- h->bus_nr != devp->s.bus ||
- h->device_id != devp->chip.device_id)
- continue;
- if (devp->attach_done)
- continue;
- if (h->flags & SYMBIOS_INIT_SCAN_AT_BOOT) {
- sym_get_nvram(devp, nvp);
- if (!sym_attach (tpnt, attach_count, devp))
- attach_count++;
- }
- else if (!(sym_driver_setup.use_nvram & 0x80))
- printf_info(
- "%s: 53c%s state OFF thus not attachedn",
- sym_name(devp), devp->chip.name);
- else
- continue;
- devp->attach_done = 1;
- break;
- }
- }
- next:
- #endif
- /*
- * Rescan device list to make sure all boards attached.
- * Devices without boot records will not be attached yet
- * so try to attach them here.
- */
- for (i= 0; i < count; i++) {
- devp = &devtbl[i];
- if (!devp->attach_done) {
- devp->nvram = &nvram;
- nvram.type = 0;
- #if SYM_CONF_NVRAM_SUPPORT
- sym_get_nvram(devp, nvp);
- #endif
- if (!sym_attach (tpnt, attach_count, devp))
- attach_count++;
- }
- }
- sym_mfree(devtbl, PAGE_SIZE, "DEVTBL");
- return attach_count;
- }
- #ifdef MODULE
- /*
- * Linux release module stuff.
- *
- * Called before unloading the module.
- * Detach the host.
- * We have to free resources and halt the NCR chip.
- *
- */
- static int sym_detach(hcb_p np)
- {
- printk("%s: detaching ...n", sym_name(np));
- /*
- * Try to delete the timer.
- * In the unlikely situation where this failed,
- * try to synchronize with the timer handler.
- */
- #if LINUX_VERSION_CODE < LinuxVersionCode(2, 4, 0)
- np->s.release_stage = 1;
- if (!del_timer(&np->s.timer)) {
- int i = 1000;
- int k = 1;
- while (1) {
- u_long flags;
- SYM_LOCK_HCB(np, flags);
- k = np->s.release_stage;
- SYM_UNLOCK_HCB(np, flags);
- if (k == 2 || !--i)
- break;
- MDELAY(5);
- }
- if (!i)
- printk("%s: failed to kill timer!n", sym_name(np));
- }
- np->s.release_stage = 2;
- #else
- (void)del_timer_sync(&np->s.timer);
- #endif
- /*
- * Reset NCR chip.
- * We should use sym_soft_reset(), but we donnot want to do
- * so, since we may not be safe if interrupts occur.
- */
- printk("%s: resetting chipn", sym_name(np));
- OUTB (nc_istat, SRST);
- UDELAY (10);
- OUTB (nc_istat, 0);
- /*
- * Free host resources
- */
- sym_free_resources(np);
- return 1;
- }
- int sym53c8xx_release(struct Scsi_Host *host)
- {
- sym_detach(((struct host_data *) host->hostdata)->ncb);
- return 0;
- }
- #endif /* MODULE */
- /*
- * For bigots to keep silent. :)
- */
- #ifdef MODULE_LICENSE
- MODULE_LICENSE("Dual BSD/GPL");
- #endif
- /*
- * Driver host template.
- */
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,4,0)
- static
- #endif
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,4,0) || defined(MODULE)
- Scsi_Host_Template driver_template = SYM53C8XX;
- #include "../scsi_module.c"
- #endif