Linux Driver for BusLogic MultiMaster and FlashPoint SCSI Host Adapters
Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>
The author respectfully requests that any modifications to this software be sent directly to him for evaluation and testing.
Special thanks to Wayne Yen, Jin-Lon Hon, and Alex Win of BusLogic, whose advice has been invaluable, to David Gentzel, for writing the original Linux BusLogic driver, and to Paul Gortmaker, for being such a dedicated test site.
Finally, special thanks to Mylex/BusLogic for making the FlashPoint SCCB Manager available as freely redistributable source code.
*/
#define blogic_drvr_version "2.1.17" #define blogic_drvr_date "12 September 2013"
/* blogic_drvr_options_count is a count of the number of BusLogic Driver Options specifications provided via the Linux Kernel Command Line or via the Loadable Kernel Module Installation Facility.
*/
staticint blogic_drvr_options_count;
/* blogic_drvr_options is an array of Driver Options structures representing BusLogic Driver Options specifications provided via the Linux Kernel Command Line or via the Loadable Kernel Module Installation Facility.
*/
/* blogic_probeinfo_count is the number of entries in blogic_probeinfo_list.
*/
staticint blogic_probeinfo_count;
/* blogic_probeinfo_list is the list of I/O Addresses and Bus Probe Information to be checked for potential BusLogic Host Adapters. It is initialized by interrogating the PCI Configuration Space on PCI machines as well as from the list of standard BusLogic I/O Addresses.
*/
/* blogic_cmd_failure_reason holds a string identifying the reason why a call to blogic_cmd failed. It is only non-NULL when blogic_cmd returns a failure code.
*/
staticchar *blogic_cmd_failure_reason;
/* blogic_announce_drvr announces the Driver Version and Date, Author's Name, Copyright Notice, and Electronic Mail Address.
*/
staticvoid blogic_announce_drvr(struct blogic_adapter *adapter)
{
blogic_announce("***** BusLogic SCSI Driver Version " blogic_drvr_version " of " blogic_drvr_date " *****\n", adapter);
blogic_announce("Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>\n", adapter);
}
/* blogic_drvr_info returns the Host Adapter Name to identify this SCSI Driver and Host Adapter.
*/
/* blogic_init_ccbs initializes a group of Command Control Blocks (CCBs) for Host Adapter from the blk_size bytes located at blk_pointer. The newly created CCBs are added to Host Adapter's free list.
*/
/* blogic_create_addlccbs allocates Additional CCBs for Host Adapter. If allocation fails and there are no remaining CCBs available, the Driver Queue Depth is decreased to a known safe value to avoid potential deadlocks when multiple host adapters share the same IRQ Channel.
*/
staticvoid blogic_create_addlccbs(struct blogic_adapter *adapter, int addl_ccbs, bool print_success)
{ int blk_size = BLOGIC_CCB_GRP_ALLOCSIZE * sizeof(struct blogic_ccb); int prev_alloc = adapter->alloc_ccbs; void *blk_pointer;
dma_addr_t blkp; if (addl_ccbs <= 0) return; while (adapter->alloc_ccbs - prev_alloc < addl_ccbs) {
blk_pointer = dma_alloc_coherent(&adapter->pci_device->dev,
blk_size, &blkp, GFP_KERNEL); if (blk_pointer == NULL) break;
blogic_init_ccbs(adapter, blk_pointer, blk_size, blkp);
} if (adapter->alloc_ccbs > prev_alloc) { if (print_success)
blogic_notice("Allocated %d additional CCBs (total now %d)\n", adapter, adapter->alloc_ccbs - prev_alloc, adapter->alloc_ccbs); return;
}
blogic_notice("Failed to allocate additional CCBs\n", adapter); if (adapter->drvr_qdepth > adapter->alloc_ccbs - adapter->tgt_count) {
adapter->drvr_qdepth = adapter->alloc_ccbs - adapter->tgt_count;
adapter->scsi_host->can_queue = adapter->drvr_qdepth;
}
}
/* blogic_alloc_ccb allocates a CCB from Host Adapter's free list, allocating more memory from the Kernel if necessary. The Host Adapter's Lock should already have been acquired by the caller.
*/
/* blogic_dealloc_ccb deallocates a CCB, returning it to the Host Adapter's free list. The Host Adapter's Lock should already have been acquired by the caller.
*/
/* blogic_cmd sends the command opcode to adapter, optionally providing paramlen bytes of param and receiving at most replylen bytes of reply; any excess reply data is received but discarded.
On success, this function returns the number of reply bytes read from the Host Adapter (including any discarded data); on failure, it returns -1 if the command was invalid, or -2 if a timeout occurred.
blogic_cmd is called exclusively during host adapter detection and initialization, so performance and latency are not critical, and exclusive access to the Host Adapter hardware is assumed. Once the host adapter and driver are initialized, the only Host Adapter command that is issued is the single byte Execute Mailbox Command operation code, which does not require waiting for the Host Adapter Ready bit to be set in the Status Register.
*/
staticint blogic_cmd(struct blogic_adapter *adapter, enum blogic_opcode opcode, void *param, int paramlen, void *reply, int replylen)
{ unsignedchar *param_p = (unsignedchar *) param; unsignedchar *reply_p = (unsignedchar *) reply; union blogic_stat_reg statusreg; union blogic_int_reg intreg; unsignedlong processor_flag = 0; int reply_b = 0, result; long timeout; /* Clear out the Reply Data if provided.
*/ if (replylen > 0)
memset(reply, 0, replylen); /* If the IRQ Channel has not yet been acquired, then interrupts must be disabled while issuing host adapter commands since a Command Complete interrupt could occur if the IRQ Channel was previously enabled by another BusLogic Host Adapter or another driver sharing the same IRQ Channel.
*/ if (!adapter->irq_acquired)
local_irq_save(processor_flag); /* Wait for the Host Adapter Ready bit to be set and the Command/Parameter Register Busy bit to be reset in the Status Register.
*/
timeout = 10000; while (--timeout >= 0) {
statusreg.all = blogic_rdstatus(adapter); if (statusreg.sr.adapter_ready && !statusreg.sr.cmd_param_busy) break;
udelay(100);
} if (timeout < 0) {
blogic_cmd_failure_reason = "Timeout waiting for Host Adapter Ready";
result = -2; goto done;
} /* Write the opcode to the Command/Parameter Register.
*/
adapter->adapter_cmd_complete = false;
blogic_setcmdparam(adapter, opcode); /* Write any additional Parameter Bytes.
*/
timeout = 10000; while (paramlen > 0 && --timeout >= 0) { /* Wait 100 microseconds to give the Host Adapter enough time to determine whether the last value written to the Command/Parameter Register was valid or not. If the Command Complete bit is set in the Interrupt Register, then the Command Invalid bit in the Status Register will be reset if the Operation Code or Parameter was valid and the command has completed, or set if the Operation Code or Parameter was invalid. If the Data In Register Ready bit is set in the Status Register, then the Operation Code was valid, and data is waiting to be read back from the Host Adapter. Otherwise, wait for the Command/Parameter Register Busy bit in the Status Register to be reset.
*/
udelay(100);
intreg.all = blogic_rdint(adapter);
statusreg.all = blogic_rdstatus(adapter); if (intreg.ir.cmd_complete) break; if (adapter->adapter_cmd_complete) break; if (statusreg.sr.datain_ready) break; if (statusreg.sr.cmd_param_busy) continue;
blogic_setcmdparam(adapter, *param_p++);
paramlen--;
} if (timeout < 0) {
blogic_cmd_failure_reason = "Timeout waiting for Parameter Acceptance";
result = -2; goto done;
} /* The Modify I/O Address command does not cause a Command Complete Interrupt.
*/ if (opcode == BLOGIC_MOD_IOADDR) {
statusreg.all = blogic_rdstatus(adapter); if (statusreg.sr.cmd_invalid) {
blogic_cmd_failure_reason = "Modify I/O Address Invalid";
result = -1; goto done;
} if (blogic_global_options.trace_config)
blogic_notice("blogic_cmd(%02X) Status = %02X: (Modify I/O Address)\n", adapter, opcode, statusreg.all);
result = 0; goto done;
} /* Select an appropriate timeout value for awaiting command completion.
*/ switch (opcode) { case BLOGIC_INQ_DEV0TO7: case BLOGIC_INQ_DEV8TO15: case BLOGIC_INQ_DEV: /* Approximately 60 seconds. */
timeout = 60 * 10000; break; default: /* Approximately 1 second. */
timeout = 10000; break;
} /* Receive any Reply Bytes, waiting for either the Command Complete bit to be set in the Interrupt Register, or for the Interrupt Handler to set the Host Adapter Command Completed bit in the Host Adapter structure.
*/ while (--timeout >= 0) {
intreg.all = blogic_rdint(adapter);
statusreg.all = blogic_rdstatus(adapter); if (intreg.ir.cmd_complete) break; if (adapter->adapter_cmd_complete) break; if (statusreg.sr.datain_ready) { if (++reply_b <= replylen)
*reply_p++ = blogic_rddatain(adapter); else
blogic_rddatain(adapter);
} if (opcode == BLOGIC_FETCH_LOCALRAM &&
statusreg.sr.adapter_ready) break;
udelay(100);
} if (timeout < 0) {
blogic_cmd_failure_reason = "Timeout waiting for Command Complete";
result = -2; goto done;
} /* Clear any pending Command Complete Interrupt.
*/
blogic_intreset(adapter); /* Provide tracing information if requested.
*/ if (blogic_global_options.trace_config) { int i;
blogic_notice("blogic_cmd(%02X) Status = %02X: %2d ==> %2d:",
adapter, opcode, statusreg.all, replylen,
reply_b); if (replylen > reply_b)
replylen = reply_b; for (i = 0; i < replylen; i++)
blogic_notice(" %02X", adapter,
((unsignedchar *) reply)[i]);
blogic_notice("\n", adapter);
} /* Process Command Invalid conditions.
*/ if (statusreg.sr.cmd_invalid) { /* Some early BusLogic Host Adapters may not recover properly from a Command Invalid condition, so if this appears to be the case, a Soft Reset is issued to the Host Adapter. Potentially invalid commands are never attempted after Mailbox Initialization is performed, so there should be no Host Adapter state lost by a Soft Reset in response to a Command Invalid condition.
*/
udelay(1000);
statusreg.all = blogic_rdstatus(adapter); if (statusreg.sr.cmd_invalid || statusreg.sr.rsvd ||
statusreg.sr.datain_ready ||
statusreg.sr.cmd_param_busy ||
!statusreg.sr.adapter_ready ||
!statusreg.sr.init_reqd ||
statusreg.sr.diag_active ||
statusreg.sr.diag_failed) {
blogic_softreset(adapter);
udelay(1000);
}
blogic_cmd_failure_reason = "Command Invalid";
result = -1; goto done;
} /* Handle Excess Parameters Supplied conditions.
*/ if (paramlen > 0) {
blogic_cmd_failure_reason = "Excess Parameters Supplied";
result = -1; goto done;
} /* Indicate the command completed successfully.
*/
blogic_cmd_failure_reason = NULL;
result = reply_b; /* Restore the interrupt status if necessary and return.
*/
done: if (!adapter->irq_acquired)
local_irq_restore(processor_flag); return result;
}
/* blogic_sort_probeinfo sorts a section of blogic_probeinfo_list in order of increasing PCI Bus and Device Number.
*/
staticvoid __init blogic_sort_probeinfo(struct blogic_probeinfo
*probeinfo_list, int probeinfo_cnt)
{ int last_exchange = probeinfo_cnt - 1, bound, j;
/* blogic_init_mm_probeinfo initializes the list of I/O Address and Bus Probe Information to be checked for potential BusLogic MultiMaster SCSI Host Adapters by interrogating the PCI Configuration Space on PCI machines as well as from the list of standard BusLogic MultiMaster ISA I/O Addresses. It returns the number of PCI MultiMaster Host Adapters found.
*/
staticint __init blogic_init_mm_probeinfo(struct blogic_adapter *adapter)
{ struct blogic_probeinfo *pr_probeinfo =
&blogic_probeinfo_list[blogic_probeinfo_count]; int nonpr_mmindex = blogic_probeinfo_count + 1; int nonpr_mmcount = 0, mmcount = 0; bool force_scan_order = false; bool force_scan_order_checked = false; struct pci_dev *pci_device = NULL; int i; if (blogic_probeinfo_count >= BLOGIC_MAX_ADAPTERS) return 0;
blogic_probeinfo_count++; /* Iterate over the MultiMaster PCI Host Adapters. For each enumerated host adapter, determine whether its ISA Compatible I/O Port is enabled and if so, whether it is assigned the Primary I/O Address. A host adapter that is assigned the Primary I/O Address will always be the preferred boot device. The MultiMaster BIOS will first recognize a host adapter at the Primary I/O Address, then any other PCI host adapters, and finally any host adapters located at the remaining standard ISA I/O Addresses. When a PCI host adapter is found with its ISA Compatible I/O Port enabled, a command is issued to disable the ISA Compatible I/O Port, and it is noted that the particular standard ISA I/O Address need not be probed.
*/
pr_probeinfo->io_addr = 0; while ((pci_device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC,
PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER,
pci_device)) != NULL) { struct blogic_adapter *host_adapter = adapter; struct blogic_adapter_info adapter_info; enum blogic_isa_ioport mod_ioaddr_req; unsignedchar bus; unsignedchar device; unsignedint irq_ch; unsignedlong base_addr0; unsignedlong base_addr1; unsignedlong io_addr; unsignedlong pci_addr;
if (pci_enable_device(pci_device)) continue;
if (dma_set_mask(&pci_device->dev, DMA_BIT_MASK(32))) continue;
if (pci_resource_flags(pci_device, 0) & IORESOURCE_MEM) {
blogic_err("BusLogic: Base Address0 0x%lX not I/O for MultiMaster Host Adapter\n", NULL, base_addr0);
blogic_err("at PCI Bus %d Device %d I/O Address 0x%lX\n", NULL, bus, device, io_addr); continue;
} if (pci_resource_flags(pci_device, 1) & IORESOURCE_IO) {
blogic_err("BusLogic: Base Address1 0x%lX not Memory for MultiMaster Host Adapter\n", NULL, base_addr1);
blogic_err("at PCI Bus %d Device %d PCI Address 0x%lX\n", NULL, bus, device, pci_addr); continue;
} if (irq_ch == 0) {
blogic_err("BusLogic: IRQ Channel %d invalid for MultiMaster Host Adapter\n", NULL, irq_ch);
blogic_err("at PCI Bus %d Device %d I/O Address 0x%lX\n", NULL, bus, device, io_addr); continue;
} if (blogic_global_options.trace_probe) {
blogic_notice("BusLogic: PCI MultiMaster Host Adapter detected at\n", NULL);
blogic_notice("BusLogic: PCI Bus %d Device %d I/O Address 0x%lX PCI Address 0x%lX\n", NULL, bus, device, io_addr, pci_addr);
} /* Issue the Inquire PCI Host Adapter Information command to determine the ISA Compatible I/O Port. If the ISA Compatible I/O Port is known and enabled, note that the particular Standard ISA I/O Address should not be probed.
*/
host_adapter->io_addr = io_addr;
blogic_intreset(host_adapter); if (blogic_cmd(host_adapter, BLOGIC_INQ_PCI_INFO, NULL, 0,
&adapter_info, sizeof(adapter_info)) != sizeof(adapter_info))
adapter_info.isa_port = BLOGIC_IO_DISABLE; /* Issue the Modify I/O Address command to disable the ISA Compatible I/O Port. On PCI Host Adapters, the Modify I/O Address command allows modification of the ISA compatible I/O Address that the Host Adapter responds to; it does not affect the PCI compliant I/O Address assigned at system initialization.
*/
mod_ioaddr_req = BLOGIC_IO_DISABLE;
blogic_cmd(host_adapter, BLOGIC_MOD_IOADDR, &mod_ioaddr_req, sizeof(mod_ioaddr_req), NULL, 0); /* For the first MultiMaster Host Adapter enumerated, issue the Fetch Host Adapter Local RAM command to read byte 45 of the AutoSCSI area, for the setting of the "Use Bus And Device # For PCI Scanning Seq." option. Issue the Inquire Board ID command since this option is only valid for the BT-948/958/958D.
*/ if (!force_scan_order_checked) { struct blogic_fetch_localram fetch_localram; struct blogic_autoscsi_byte45 autoscsi_byte45; struct blogic_board_id id;
fetch_localram.offset = BLOGIC_AUTOSCSI_BASE + 45;
fetch_localram.count = sizeof(autoscsi_byte45);
blogic_cmd(host_adapter, BLOGIC_FETCH_LOCALRAM,
&fetch_localram, sizeof(fetch_localram),
&autoscsi_byte45, sizeof(autoscsi_byte45));
blogic_cmd(host_adapter, BLOGIC_GET_BOARD_ID, NULL, 0,
&id, sizeof(id)); if (id.fw_ver_digit1 == '5')
force_scan_order =
autoscsi_byte45.force_scan_order;
force_scan_order_checked = true;
} /* Determine whether this MultiMaster Host Adapter has its ISA Compatible I/O Port enabled and is assigned the Primary I/O Address. If it does, then it is the Primary MultiMaster Host Adapter and must be recognized first. If it does not, then it is added to the list for probing after any Primary MultiMaster Host Adapter is probed.
*/ if (adapter_info.isa_port == BLOGIC_IO_330) {
pr_probeinfo->adapter_type = BLOGIC_MULTIMASTER;
pr_probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
pr_probeinfo->io_addr = io_addr;
pr_probeinfo->pci_addr = pci_addr;
pr_probeinfo->bus = bus;
pr_probeinfo->dev = device;
pr_probeinfo->irq_ch = irq_ch;
pr_probeinfo->pci_device = pci_dev_get(pci_device);
mmcount++;
} elseif (blogic_probeinfo_count < BLOGIC_MAX_ADAPTERS) { struct blogic_probeinfo *probeinfo =
&blogic_probeinfo_list[blogic_probeinfo_count++];
probeinfo->adapter_type = BLOGIC_MULTIMASTER;
probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
probeinfo->io_addr = io_addr;
probeinfo->pci_addr = pci_addr;
probeinfo->bus = bus;
probeinfo->dev = device;
probeinfo->irq_ch = irq_ch;
probeinfo->pci_device = pci_dev_get(pci_device);
nonpr_mmcount++;
mmcount++;
} else
blogic_warn("BusLogic: Too many Host Adapters detected\n", NULL);
} /* If the AutoSCSI "Use Bus And Device # For PCI Scanning Seq." option is ON for the first enumerated MultiMaster Host Adapter, and if that host adapter is a BT-948/958/958D, then the MultiMaster BIOS will recognize MultiMaster Host Adapters in the order of increasing PCI Bus and Device Number. In that case, sort the probe information into the same order the BIOS uses. If this option is OFF, then the MultiMaster BIOS will recognize MultiMaster Host Adapters in the order they are enumerated by the PCI BIOS, and hence no sorting is necessary.
*/ if (force_scan_order)
blogic_sort_probeinfo(&blogic_probeinfo_list[nonpr_mmindex],
nonpr_mmcount); /* Iterate over the older non-compliant MultiMaster PCI Host Adapters, noting the PCI bus location and assigned IRQ Channel.
*/
pci_device = NULL; while ((pci_device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC,
PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC,
pci_device)) != NULL) { unsignedchar bus; unsignedchar device; unsignedint irq_ch; unsignedlong io_addr;
if (pci_enable_device(pci_device)) continue;
if (dma_set_mask(&pci_device->dev, DMA_BIT_MASK(32))) continue;
/* blogic_init_fp_probeinfo initializes the list of I/O Address and Bus Probe Information to be checked for potential BusLogic FlashPoint Host Adapters by interrogating the PCI Configuration Space. It returns the number of FlashPoint Host Adapters found.
*/
if (dma_set_mask(&pci_device->dev, DMA_BIT_MASK(32))) continue;
bus = pci_device->bus->number;
device = pci_device->devfn >> 3;
irq_ch = pci_device->irq;
io_addr = base_addr0 = pci_resource_start(pci_device, 0);
pci_addr = base_addr1 = pci_resource_start(pci_device, 1); #ifdef CONFIG_SCSI_FLASHPOINT if (pci_resource_flags(pci_device, 0) & IORESOURCE_MEM) {
blogic_err("BusLogic: Base Address0 0x%lX not I/O for FlashPoint Host Adapter\n", NULL, base_addr0);
blogic_err("at PCI Bus %d Device %d I/O Address 0x%lX\n", NULL, bus, device, io_addr); continue;
} if (pci_resource_flags(pci_device, 1) & IORESOURCE_IO) {
blogic_err("BusLogic: Base Address1 0x%lX not Memory for FlashPoint Host Adapter\n", NULL, base_addr1);
blogic_err("at PCI Bus %d Device %d PCI Address 0x%lX\n", NULL, bus, device, pci_addr); continue;
} if (irq_ch == 0) {
blogic_err("BusLogic: IRQ Channel %d invalid for FlashPoint Host Adapter\n", NULL, irq_ch);
blogic_err("at PCI Bus %d Device %d I/O Address 0x%lX\n", NULL, bus, device, io_addr); continue;
} if (blogic_global_options.trace_probe) {
blogic_notice("BusLogic: FlashPoint Host Adapter detected at\n", NULL);
blogic_notice("BusLogic: PCI Bus %d Device %d I/O Address 0x%lX PCI Address 0x%lX\n", NULL, bus, device, io_addr, pci_addr);
} if (blogic_probeinfo_count < BLOGIC_MAX_ADAPTERS) { struct blogic_probeinfo *probeinfo =
&blogic_probeinfo_list[blogic_probeinfo_count++];
probeinfo->adapter_type = BLOGIC_FLASHPOINT;
probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
probeinfo->io_addr = io_addr;
probeinfo->pci_addr = pci_addr;
probeinfo->bus = bus;
probeinfo->dev = device;
probeinfo->irq_ch = irq_ch;
probeinfo->pci_device = pci_dev_get(pci_device);
fpcount++;
} else
blogic_warn("BusLogic: Too many Host Adapters detected\n", NULL); #else
blogic_err("BusLogic: FlashPoint Host Adapter detected at PCI Bus %d Device %d\n", NULL, bus, device);
blogic_err("BusLogic: I/O Address 0x%lX PCI Address 0x%lX, irq %d, but FlashPoint\n", NULL, io_addr, pci_addr, irq_ch);
blogic_err("BusLogic: support was omitted in this kernel configuration.\n", NULL); #endif
} /* The FlashPoint BIOS will scan for FlashPoint Host Adapters in the order of increasing PCI Bus and Device Number, so sort the probe information into the same order the BIOS uses.
*/
blogic_sort_probeinfo(&blogic_probeinfo_list[fpindex], fpcount); return fpcount;
}
/* blogic_init_probeinfo_list initializes the list of I/O Address and Bus Probe Information to be checked for potential BusLogic SCSI Host Adapters by interrogating the PCI Configuration Space on PCI machines as well as from the list of standard BusLogic MultiMaster ISA I/O Addresses. By default, if both FlashPoint and PCI MultiMaster Host Adapters are present, this driver will probe for FlashPoint Host Adapters first unless the BIOS primary disk is controlled by the first PCI MultiMaster Host Adapter, in which case MultiMaster Host Adapters will be probed first. The BusLogic Driver Options specifications "MultiMasterFirst" and "FlashPointFirst" can be used to force a particular probe order.
*/
staticvoid __init blogic_init_probeinfo_list(struct blogic_adapter *adapter)
{ /* If a PCI BIOS is present, interrogate it for MultiMaster and FlashPoint Host Adapters; otherwise, default to the standard ISA MultiMaster probe.
*/ if (!blogic_probe_options.noprobe_pci) { if (blogic_probe_options.multimaster_first) {
blogic_init_mm_probeinfo(adapter);
blogic_init_fp_probeinfo(adapter);
} elseif (blogic_probe_options.flashpoint_first) {
blogic_init_fp_probeinfo(adapter);
blogic_init_mm_probeinfo(adapter);
} else { int fpcount = blogic_init_fp_probeinfo(adapter); int mmcount = blogic_init_mm_probeinfo(adapter); if (fpcount > 0 && mmcount > 0) { struct blogic_probeinfo *probeinfo =
&blogic_probeinfo_list[fpcount]; struct blogic_adapter *myadapter = adapter; struct blogic_fetch_localram fetch_localram; struct blogic_bios_drvmap d0_mapbyte;
while (probeinfo->adapter_bus_type !=
BLOGIC_PCI_BUS)
probeinfo++;
myadapter->io_addr = probeinfo->io_addr;
fetch_localram.offset =
BLOGIC_BIOS_BASE + BLOGIC_BIOS_DRVMAP;
fetch_localram.count = sizeof(d0_mapbyte);
blogic_cmd(myadapter, BLOGIC_FETCH_LOCALRAM,
&fetch_localram, sizeof(fetch_localram),
&d0_mapbyte, sizeof(d0_mapbyte)); /* If the Map Byte for BIOS Drive 0 indicates that BIOS Drive 0 is controlled by this PCI MultiMaster Host Adapter, then reverse the probe order so that MultiMaster Host Adapters are probed before FlashPoint Host Adapters.
*/ if (d0_mapbyte.diskgeom != BLOGIC_BIOS_NODISK) { struct blogic_probeinfo saved_probeinfo[BLOGIC_MAX_ADAPTERS]; int mmcount = blogic_probeinfo_count - fpcount;
/* blogic_probe probes for a BusLogic Host Adapter.
*/
staticbool __init blogic_probe(struct blogic_adapter *adapter)
{ union blogic_stat_reg statusreg; union blogic_int_reg intreg; union blogic_geo_reg georeg; /* FlashPoint Host Adapters are Probed by the FlashPoint SCCB Manager.
*/ if (blogic_flashpoint_type(adapter)) { struct fpoint_info *fpinfo = &adapter->fpinfo;
fpinfo->base_addr = (u32) adapter->io_addr;
fpinfo->irq_ch = adapter->irq_ch;
fpinfo->present = false; if (!(FlashPoint_ProbeHostAdapter(fpinfo) == 0 &&
fpinfo->present)) {
blogic_err("BusLogic: FlashPoint Host Adapter detected at PCI Bus %d Device %d\n", adapter, adapter->bus, adapter->dev);
blogic_err("BusLogic: I/O Address 0x%lX PCI Address 0x%lX, but FlashPoint\n", adapter, adapter->io_addr, adapter->pci_addr);
blogic_err("BusLogic: Probe Function failed to validate it.\n", adapter); returnfalse;
} if (blogic_global_options.trace_probe)
blogic_notice("BusLogic_Probe(0x%lX): FlashPoint Found\n", adapter, adapter->io_addr); /* Indicate the Host Adapter Probe completed successfully.
*/ returntrue;
} /* Read the Status, Interrupt, and Geometry Registers to test if there are I/O ports that respond, and to check the values to determine if they are from a BusLogic Host Adapter. A nonexistent I/O port will return 0xFF, in which case there is definitely no BusLogic Host Adapter at this base I/O Address. The test here is a subset of that used by the BusLogic Host Adapter BIOS.
*/
statusreg.all = blogic_rdstatus(adapter);
intreg.all = blogic_rdint(adapter);
georeg.all = blogic_rdgeom(adapter); if (blogic_global_options.trace_probe)
blogic_notice("BusLogic_Probe(0x%lX): Status 0x%02X, Interrupt 0x%02X, Geometry 0x%02X\n", adapter, adapter->io_addr, statusreg.all, intreg.all, georeg.all); if (statusreg.all == 0 || statusreg.sr.diag_active ||
statusreg.sr.cmd_param_busy || statusreg.sr.rsvd ||
statusreg.sr.cmd_invalid || intreg.ir.rsvd != 0) returnfalse; /* Check the undocumented Geometry Register to test if there is an I/O port that responded. Adaptec Host Adapters do not implement the Geometry Register, so this test helps serve to avoid incorrectly recognizing an Adaptec 1542A or 1542B as a BusLogic. Unfortunately, the Adaptec 1542C series does respond to the Geometry Register I/O port, but it will be rejected later when the Inquire Extended Setup Information command is issued in blogic_checkadapter. The AMI FastDisk Host Adapter is a BusLogic clone that implements the same interface as earlier BusLogic Host Adapters, including the undocumented commands, and is therefore supported by this driver. However, the AMI FastDisk always returns 0x00 upon reading the Geometry Register, so the extended translation option should always be left disabled on the AMI FastDisk.
*/ if (georeg.all == 0xFF) returnfalse; /* Indicate the Host Adapter Probe completed successfully.
*/ returntrue;
}
/* blogic_hwreset issues a Hardware Reset to the Host Adapter and waits for Host Adapter Diagnostics to complete. If hard_reset is true, a Hard Reset is performed which also initiates a SCSI Bus Reset. Otherwise, a Soft Reset is performed which only resets the Host Adapter without forcing a SCSI Bus Reset.
*/
staticbool blogic_hwreset(struct blogic_adapter *adapter, bool hard_reset)
{ union blogic_stat_reg statusreg; int timeout; /* FlashPoint Host Adapters are Hard Reset by the FlashPoint SCCB Manager.
*/ if (blogic_flashpoint_type(adapter)) { struct fpoint_info *fpinfo = &adapter->fpinfo;
fpinfo->softreset = !hard_reset;
fpinfo->report_underrun = true;
adapter->cardhandle =
FlashPoint_HardwareResetHostAdapter(fpinfo); if (adapter->cardhandle == (void *)FPOINT_BADCARD_HANDLE) returnfalse; /* Indicate the Host Adapter Hard Reset completed successfully.
*/ returntrue;
} /* Issue a Hard Reset or Soft Reset Command to the Host Adapter. The Host Adapter should respond by setting Diagnostic Active in the Status Register.
*/ if (hard_reset)
blogic_hardreset(adapter); else
blogic_softreset(adapter); /* Wait until Diagnostic Active is set in the Status Register.
*/
timeout = 5 * 10000; while (--timeout >= 0) {
statusreg.all = blogic_rdstatus(adapter); if (statusreg.sr.diag_active) break;
udelay(100);
} if (blogic_global_options.trace_hw_reset)
blogic_notice("BusLogic_HardwareReset(0x%lX): Diagnostic Active, Status 0x%02X\n", adapter, adapter->io_addr, statusreg.all); if (timeout < 0) returnfalse; /* Wait 100 microseconds to allow completion of any initial diagnostic activity which might leave the contents of the Status Register unpredictable.
*/
udelay(100); /* Wait until Diagnostic Active is reset in the Status Register.
*/
timeout = 10 * 10000; while (--timeout >= 0) {
statusreg.all = blogic_rdstatus(adapter); if (!statusreg.sr.diag_active) break;
udelay(100);
} if (blogic_global_options.trace_hw_reset)
blogic_notice("BusLogic_HardwareReset(0x%lX): Diagnostic Completed, Status 0x%02X\n", adapter, adapter->io_addr, statusreg.all); if (timeout < 0) returnfalse; /* Wait until at least one of the Diagnostic Failure, Host Adapter Ready, or Data In Register Ready bits is set in the Status Register.
*/
timeout = 10000; while (--timeout >= 0) {
statusreg.all = blogic_rdstatus(adapter); if (statusreg.sr.diag_failed || statusreg.sr.adapter_ready ||
statusreg.sr.datain_ready) break;
udelay(100);
} if (blogic_global_options.trace_hw_reset)
blogic_notice("BusLogic_HardwareReset(0x%lX): Host Adapter Ready, Status 0x%02X\n", adapter, adapter->io_addr, statusreg.all); if (timeout < 0) returnfalse; /* If Diagnostic Failure is set or Host Adapter Ready is reset, then an error occurred during the Host Adapter diagnostics. If Data In Register Ready is set, then there is an Error Code available.
*/ if (statusreg.sr.diag_failed || !statusreg.sr.adapter_ready) {
blogic_cmd_failure_reason = NULL;
blogic_failure(adapter, "HARD RESET DIAGNOSTICS");
blogic_err("HOST ADAPTER STATUS REGISTER = %02X\n", adapter,
statusreg.all); if (statusreg.sr.datain_ready)
blogic_err("HOST ADAPTER ERROR CODE = %d\n", adapter,
blogic_rddatain(adapter)); returnfalse;
} /* Indicate the Host Adapter Hard Reset completed successfully.
*/ returntrue;
}
/* blogic_checkadapter checks to be sure this really is a BusLogic Host Adapter.
*/
staticbool __init blogic_checkadapter(struct blogic_adapter *adapter)
{ struct blogic_ext_setup ext_setupinfo; unsignedchar req_replylen; bool result = true; /* FlashPoint Host Adapters do not require this protection.
*/ if (blogic_flashpoint_type(adapter)) returntrue; /* Issue the Inquire Extended Setup Information command. Only genuine BusLogic Host Adapters and true clones support this command. Adaptec 1542C series Host Adapters that respond to the Geometry Register I/O port will fail this command.
*/
req_replylen = sizeof(ext_setupinfo); if (blogic_cmd(adapter, BLOGIC_INQ_EXTSETUP, &req_replylen, sizeof(req_replylen), &ext_setupinfo, sizeof(ext_setupinfo)) != sizeof(ext_setupinfo))
result = false; /* Provide tracing information if requested and return.
*/ if (blogic_global_options.trace_probe)
blogic_notice("BusLogic_Check(0x%lX): MultiMaster %s\n", adapter,
adapter->io_addr,
(result ? "Found" : "Not Found")); return result;
}
/* blogic_rdconfig reads the Configuration Information from Host Adapter and initializes the Host Adapter structure.
*/
staticbool __init blogic_rdconfig(struct blogic_adapter *adapter)
{ struct blogic_board_id id; struct blogic_config config; struct blogic_setup_info setupinfo; struct blogic_ext_setup ext_setupinfo; unsignedchar model[5]; unsignedchar fw_ver_digit3; unsignedchar fw_ver_letter; struct blogic_adapter_info adapter_info; struct blogic_fetch_localram fetch_localram; struct blogic_autoscsi autoscsi; union blogic_geo_reg georeg; unsignedchar req_replylen; unsignedchar *tgt, ch; int tgt_id, i; /* Configuration Information for FlashPoint Host Adapters is provided in the fpoint_info structure by the FlashPoint SCCB Manager's Probe Function. Initialize fields in the Host Adapter structure from the fpoint_info structure.
*/ if (blogic_flashpoint_type(adapter)) { struct fpoint_info *fpinfo = &adapter->fpinfo;
tgt = adapter->model;
*tgt++ = 'B';
*tgt++ = 'T';
*tgt++ = '-'; for (i = 0; i < sizeof(fpinfo->model); i++)
*tgt++ = fpinfo->model[i];
*tgt++ = '\0';
strcpy(adapter->fw_ver, FLASHPOINT_FW_VER);
adapter->scsi_id = fpinfo->scsi_id;
adapter->ext_trans_enable = fpinfo->ext_trans_enable;
adapter->parity = fpinfo->parity;
adapter->reset_enabled = !fpinfo->softreset;
adapter->level_int = true;
adapter->wide = fpinfo->wide;
adapter->differential = false;
adapter->scam = true;
adapter->ultra = true;
adapter->ext_lun = true;
adapter->terminfo_valid = true;
adapter->low_term = fpinfo->low_term;
adapter->high_term = fpinfo->high_term;
adapter->scam_enabled = fpinfo->scam_enabled;
adapter->scam_lev2 = fpinfo->scam_lev2;
adapter->drvr_sglimit = BLOGIC_SG_LIMIT;
adapter->maxdev = (adapter->wide ? 16 : 8);
adapter->maxlun = 32;
adapter->initccbs = 4 * BLOGIC_CCB_GRP_ALLOCSIZE;
adapter->inc_ccbs = BLOGIC_CCB_GRP_ALLOCSIZE;
adapter->drvr_qdepth = 255;
adapter->adapter_qdepth = adapter->drvr_qdepth;
adapter->sync_ok = fpinfo->sync_ok;
adapter->fast_ok = fpinfo->fast_ok;
adapter->ultra_ok = fpinfo->ultra_ok;
adapter->wide_ok = fpinfo->wide_ok;
adapter->discon_ok = fpinfo->discon_ok;
adapter->tagq_ok = 0xFFFF; goto common;
} /* Issue the Inquire Board ID command.
*/ if (blogic_cmd(adapter, BLOGIC_GET_BOARD_ID, NULL, 0, &id, sizeof(id)) != sizeof(id)) return blogic_failure(adapter, "INQUIRE BOARD ID"); /* Issue the Inquire Configuration command.
*/ if (blogic_cmd(adapter, BLOGIC_INQ_CONFIG, NULL, 0, &config, sizeof(config))
!= sizeof(config)) return blogic_failure(adapter, "INQUIRE CONFIGURATION"); /* Issue the Inquire Setup Information command.
*/
req_replylen = sizeof(setupinfo); if (blogic_cmd(adapter, BLOGIC_INQ_SETUPINFO, &req_replylen, sizeof(req_replylen), &setupinfo, sizeof(setupinfo)) != sizeof(setupinfo)) return blogic_failure(adapter, "INQUIRE SETUP INFORMATION"); /* Issue the Inquire Extended Setup Information command.
*/
req_replylen = sizeof(ext_setupinfo); if (blogic_cmd(adapter, BLOGIC_INQ_EXTSETUP, &req_replylen, sizeof(req_replylen), &ext_setupinfo, sizeof(ext_setupinfo)) != sizeof(ext_setupinfo)) return blogic_failure(adapter, "INQUIRE EXTENDED SETUP INFORMATION"); /* Issue the Inquire Firmware Version 3rd Digit command.
*/
fw_ver_digit3 = '\0'; if (id.fw_ver_digit1 > '0') if (blogic_cmd(adapter, BLOGIC_INQ_FWVER_D3, NULL, 0,
&fw_ver_digit3, sizeof(fw_ver_digit3)) != sizeof(fw_ver_digit3)) return blogic_failure(adapter, "INQUIRE FIRMWARE 3RD DIGIT"); /* Issue the Inquire Host Adapter Model Number command.
*/ if (ext_setupinfo.bus_type == 'A' && id.fw_ver_digit1 == '2') /* BusLogic BT-542B ISA 2.xx */
strcpy(model, "542B"); elseif (ext_setupinfo.bus_type == 'E' && id.fw_ver_digit1 == '2' &&
(id.fw_ver_digit2 <= '1' || (id.fw_ver_digit2 == '2' &&
fw_ver_digit3 == '0'))) /* BusLogic BT-742A EISA 2.1x or 2.20 */
strcpy(model, "742A"); elseif (ext_setupinfo.bus_type == 'E' && id.fw_ver_digit1 == '0') /* AMI FastDisk EISA Series 441 0.x */
strcpy(model, "747A"); else {
req_replylen = sizeof(model); if (blogic_cmd(adapter, BLOGIC_INQ_MODELNO, &req_replylen, sizeof(req_replylen), &model, sizeof(model)) != sizeof(model)) return blogic_failure(adapter, "INQUIRE HOST ADAPTER MODEL NUMBER");
} /* BusLogic MultiMaster Host Adapters can be identified by their model number and the major version number of their firmware as follows:
5.xx BusLogic "W" Series Host Adapters: BT-948/958/958D 4.xx BusLogic "C" Series Host Adapters: BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF 3.xx BusLogic "S" Series Host Adapters: BT-747S/747D/757S/757D/445S/545S/542D BT-542B/742A (revision H) 2.xx BusLogic "A" Series Host Adapters: BT-542B/742A (revision G and below) 0.xx AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
*/ /* Save the Model Name and Host Adapter Name in the Host Adapter structure.
*/
tgt = adapter->model;
*tgt++ = 'B';
*tgt++ = 'T';
*tgt++ = '-'; for (i = 0; i < sizeof(model); i++) {
ch = model[i]; if (ch == ' ' || ch == '\0') break;
*tgt++ = ch;
}
*tgt++ = '\0'; /* Save the Firmware Version in the Host Adapter structure.
*/
tgt = adapter->fw_ver;
*tgt++ = id.fw_ver_digit1;
*tgt++ = '.';
*tgt++ = id.fw_ver_digit2; if (fw_ver_digit3 != ' ' && fw_ver_digit3 != '\0')
*tgt++ = fw_ver_digit3;
*tgt = '\0'; /* Issue the Inquire Firmware Version Letter command.
*/ if (strcmp(adapter->fw_ver, "3.3") >= 0) { if (blogic_cmd(adapter, BLOGIC_INQ_FWVER_LETTER, NULL, 0,
&fw_ver_letter, sizeof(fw_ver_letter)) != sizeof(fw_ver_letter)) return blogic_failure(adapter, "INQUIRE FIRMWARE VERSION LETTER"); if (fw_ver_letter != ' ' && fw_ver_letter != '\0')
*tgt++ = fw_ver_letter;
*tgt = '\0';
} /* Save the Host Adapter SCSI ID in the Host Adapter structure.
*/
adapter->scsi_id = config.id; /* Determine the Bus Type and save it in the Host Adapter structure, determine and save the IRQ Channel if necessary, and determine and save the DMA Channel for ISA Host Adapters.
*/
adapter->adapter_bus_type =
blogic_adater_bus_types[adapter->model[3] - '4']; if (adapter->irq_ch == 0) { if (config.irq_ch9)
adapter->irq_ch = 9; elseif (config.irq_ch10)
adapter->irq_ch = 10; elseif (config.irq_ch11)
adapter->irq_ch = 11; elseif (config.irq_ch12)
adapter->irq_ch = 12; elseif (config.irq_ch14)
adapter->irq_ch = 14; elseif (config.irq_ch15)
adapter->irq_ch = 15;
} /* Determine whether Extended Translation is enabled and save it in the Host Adapter structure.
*/
georeg.all = blogic_rdgeom(adapter);
adapter->ext_trans_enable = georeg.gr.ext_trans_enable; /* Save the Scatter Gather Limits, Level Sensitive Interrupt flag, Wide SCSI flag, Differential SCSI flag, SCAM Supported flag, and Ultra SCSI flag in the Host Adapter structure.
*/
adapter->adapter_sglimit = ext_setupinfo.sg_limit;
adapter->drvr_sglimit = adapter->adapter_sglimit; if (adapter->adapter_sglimit > BLOGIC_SG_LIMIT)
adapter->drvr_sglimit = BLOGIC_SG_LIMIT; if (ext_setupinfo.misc.level_int)
adapter->level_int = true;
adapter->wide = ext_setupinfo.wide;
adapter->differential = ext_setupinfo.differential;
adapter->scam = ext_setupinfo.scam;
adapter->ultra = ext_setupinfo.ultra; /* Determine whether Extended LUN Format CCBs are supported and save the information in the Host Adapter structure.
*/ if (adapter->fw_ver[0] == '5' || (adapter->fw_ver[0] == '4' &&
adapter->wide))
adapter->ext_lun = true; /* Issue the Inquire PCI Host Adapter Information command to read the Termination Information from "W" series MultiMaster Host Adapters.
*/ if (adapter->fw_ver[0] == '5') { if (blogic_cmd(adapter, BLOGIC_INQ_PCI_INFO, NULL, 0,
&adapter_info, sizeof(adapter_info)) != sizeof(adapter_info)) return blogic_failure(adapter, "INQUIRE PCI HOST ADAPTER INFORMATION"); /* Save the Termination Information in the Host Adapter structure.
*/ if (adapter_info.genericinfo_valid) {
adapter->terminfo_valid = true;
adapter->low_term = adapter_info.low_term;
adapter->high_term = adapter_info.high_term;
}
} /* Issue the Fetch Host Adapter Local RAM command to read the AutoSCSI data from "W" and "C" series MultiMaster Host Adapters.
*/ if (adapter->fw_ver[0] >= '4') {
fetch_localram.offset = BLOGIC_AUTOSCSI_BASE;
fetch_localram.count = sizeof(autoscsi); if (blogic_cmd(adapter, BLOGIC_FETCH_LOCALRAM, &fetch_localram, sizeof(fetch_localram), &autoscsi, sizeof(autoscsi)) != sizeof(autoscsi)) return blogic_failure(adapter, "FETCH HOST ADAPTER LOCAL RAM"); /* Save the Parity Checking Enabled, Bus Reset Enabled, and Termination Information in the Host Adapter structure.
*/
adapter->parity = autoscsi.parity;
adapter->reset_enabled = autoscsi.reset_enabled; if (adapter->fw_ver[0] == '4') {
adapter->terminfo_valid = true;
adapter->low_term = autoscsi.low_term;
adapter->high_term = autoscsi.high_term;
} /* Save the Wide Permitted, Fast Permitted, Synchronous Permitted, Disconnect Permitted, Ultra Permitted, and SCAM Information in the Host Adapter structure.
*/
adapter->wide_ok = autoscsi.wide_ok;
adapter->fast_ok = autoscsi.fast_ok;
adapter->sync_ok = autoscsi.sync_ok;
adapter->discon_ok = autoscsi.discon_ok; if (adapter->ultra)
adapter->ultra_ok = autoscsi.ultra_ok; if (adapter->scam) {
adapter->scam_enabled = autoscsi.scam_enabled;
adapter->scam_lev2 = autoscsi.scam_lev2;
}
} /* Initialize fields in the Host Adapter structure for "S" and "A" series MultiMaster Host Adapters.
*/ if (adapter->fw_ver[0] < '4') { if (setupinfo.sync) {
adapter->sync_ok = 0xFF; if (adapter->adapter_bus_type == BLOGIC_EISA_BUS) { if (ext_setupinfo.misc.fast_on_eisa)
adapter->fast_ok = 0xFF; if (strcmp(adapter->model, "BT-757") == 0)
adapter->wide_ok = 0xFF;
}
}
adapter->discon_ok = 0xFF;
adapter->parity = setupinfo.parity;
adapter->reset_enabled = true;
} /* Determine the maximum number of Target IDs and Logical Units supported by this driver for Wide and Narrow Host Adapters.
*/
adapter->maxdev = (adapter->wide ? 16 : 8);
adapter->maxlun = (adapter->ext_lun ? 32 : 8); /* Select appropriate values for the Mailbox Count, Driver Queue Depth, Initial CCBs, and Incremental CCBs variables based on whether or not Strict Round Robin Mode is supported. If Strict Round Robin Mode is supported, then there is no performance degradation in using the maximum possible number of Outgoing and Incoming Mailboxes and allowing the Tagged and Untagged Queue Depths to determine the actual utilization. If Strict Round Robin Mode is not supported, then the Host Adapter must scan all the Outgoing Mailboxes whenever an Outgoing Mailbox entry is made, which can cause a substantial performance penalty. The host adapters actually have room to store the following number of CCBs internally; that is, they can internally queue and manage this many active commands on the SCSI bus simultaneously. Performance measurements demonstrate that the Driver Queue Depth should be set to the Mailbox Count, rather than the Host Adapter Queue Depth (internal CCB capacity), as it is more efficient to have the queued commands waiting in Outgoing Mailboxes if necessary than to block the process in the higher levels of the SCSI Subsystem.
192 BT-948/958/958D 100 BT-946C/956C/956CD/747C/757C/757CD/445C 50 BT-545C/540CF 30 BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
*/ if (adapter->fw_ver[0] == '5')
adapter->adapter_qdepth = 192; elseif (adapter->fw_ver[0] == '4')
adapter->adapter_qdepth = 100; else
adapter->adapter_qdepth = 30; if (strcmp(adapter->fw_ver, "3.31") >= 0) {
adapter->strict_rr = true;
adapter->mbox_count = BLOGIC_MAX_MAILBOX;
} else {
adapter->strict_rr = false;
adapter->mbox_count = 32;
}
adapter->drvr_qdepth = adapter->mbox_count;
adapter->initccbs = 4 * BLOGIC_CCB_GRP_ALLOCSIZE;
adapter->inc_ccbs = BLOGIC_CCB_GRP_ALLOCSIZE; /* Tagged Queuing support is available and operates properly on all "W" series MultiMaster Host Adapters, on "C" series MultiMaster Host Adapters with firmware version 4.22 and above, and on "S" series MultiMaster Host Adapters with firmware version 3.35 and above.
*/
adapter->tagq_ok = 0; switch (adapter->fw_ver[0]) { case'5':
adapter->tagq_ok = 0xFFFF; break; case'4': if (strcmp(adapter->fw_ver, "4.22") >= 0)
adapter->tagq_ok = 0xFFFF; break; case'3': if (strcmp(adapter->fw_ver, "3.35") >= 0)
adapter->tagq_ok = 0xFFFF; break;
} /* Determine the Host Adapter BIOS Address if the BIOS is enabled and save it in the Host Adapter structure. The BIOS is disabled if the bios_addr is 0.
*/
adapter->bios_addr = ext_setupinfo.bios_addr << 12; /* BusLogic BT-445S Host Adapters prior to board revision E have a hardware bug whereby when the BIOS is enabled, transfers to/from the same address range the BIOS occupies modulo 16MB are handled incorrectly. Only properly functioning BT-445S Host Adapters have firmware version 3.37.
*/ if (adapter->bios_addr > 0 &&
strcmp(adapter->model, "BT-445S") == 0 &&
strcmp(adapter->fw_ver, "3.37") < 0) return blogic_failure(adapter, "Too old firmware"); /* Initialize parameters common to MultiMaster and FlashPoint Host Adapters.
*/
common: /* Initialize the Host Adapter Full Model Name from the Model Name.
*/
strcpy(adapter->full_model, "BusLogic ");
strcat(adapter->full_model, adapter->model); /* Select an appropriate value for the Tagged Queue Depth either from a BusLogic Driver Options specification, or based on whether this Host Adapter requires that ISA Bounce Buffers be used. The Tagged Queue Depth is left at 0 for automatic determination in BusLogic_SelectQueueDepths. Initialize the Untagged Queue Depth.
*/ for (tgt_id = 0; tgt_id < BLOGIC_MAXDEV; tgt_id++) { unsignedchar qdepth = 0; if (adapter->drvr_opts != NULL &&
adapter->drvr_opts->qdepth[tgt_id] > 0)
qdepth = adapter->drvr_opts->qdepth[tgt_id];
adapter->qdepth[tgt_id] = qdepth;
}
adapter->untag_qdepth = BLOGIC_UNTAG_DEPTH; if (adapter->drvr_opts != NULL)
adapter->common_qdepth = adapter->drvr_opts->common_qdepth; if (adapter->common_qdepth > 0 &&
adapter->common_qdepth < adapter->untag_qdepth)
adapter->untag_qdepth = adapter->common_qdepth; /* Tagged Queuing is only allowed if Disconnect/Reconnect is permitted. Therefore, mask the Tagged Queuing Permitted Default bits with the Disconnect/Reconnect Permitted bits.
*/
adapter->tagq_ok &= adapter->discon_ok; /* Combine the default Tagged Queuing Permitted bits with any BusLogic Driver Options Tagged Queuing specification.
*/ if (adapter->drvr_opts != NULL)
adapter->tagq_ok = (adapter->drvr_opts->tagq_ok &
adapter->drvr_opts->tagq_ok_mask) |
(adapter->tagq_ok & ~adapter->drvr_opts->tagq_ok_mask);
/* Select an appropriate value for Bus Settle Time either from a BusLogic Driver Options specification, or from BLOGIC_BUS_SETTLE_TIME.
*/ if (adapter->drvr_opts != NULL &&
adapter->drvr_opts->bus_settle_time > 0)
adapter->bus_settle_time = adapter->drvr_opts->bus_settle_time; else
adapter->bus_settle_time = BLOGIC_BUS_SETTLE_TIME; /* Indicate reading the Host Adapter Configuration completed successfully.
*/ returntrue;
}
/* blogic_reportconfig reports the configuration of Host Adapter.
*/
/* blogic_getres acquires the system resources necessary to use Host Adapter.
*/
staticbool __init blogic_getres(struct blogic_adapter *adapter)
{ if (adapter->irq_ch == 0) {
blogic_err("NO LEGAL INTERRUPT CHANNEL ASSIGNED - DETACHING\n",
adapter); returnfalse;
} /* Acquire shared access to the IRQ Channel.
*/ if (request_irq(adapter->irq_ch, blogic_inthandler, IRQF_SHARED,
adapter->full_model, adapter) < 0) {
blogic_err("UNABLE TO ACQUIRE IRQ CHANNEL %d - DETACHING\n",
adapter, adapter->irq_ch); returnfalse;
}
adapter->irq_acquired = true; /* Indicate the System Resource Acquisition completed successfully,
*/ returntrue;
}
/* blogic_relres releases any system resources previously acquired by blogic_getres.
*/
staticvoid blogic_relres(struct blogic_adapter *adapter)
{ /* Release shared access to the IRQ Channel.
*/ if (adapter->irq_acquired)
free_irq(adapter->irq_ch, adapter); /* Release any allocated memory structs not released elsewhere
*/ if (adapter->mbox_space)
dma_free_coherent(&adapter->pci_device->dev, adapter->mbox_sz,
adapter->mbox_space, adapter->mbox_space_handle);
pci_dev_put(adapter->pci_device);
adapter->mbox_space = NULL;
adapter->mbox_space_handle = 0;
adapter->mbox_sz = 0;
}
/* blogic_initadapter initializes Host Adapter. This is the only function called during SCSI Host Adapter detection which modifies the state of the Host Adapter from its initial power on or hard reset state.
*/
/* Initialize the Host Adapter's Pointer to the Outgoing/Incoming Mailboxes.
*/
extmbox_req.mbox_count = adapter->mbox_count;
extmbox_req.base_mbox_addr = (u32) adapter->mbox_space_handle; if (blogic_cmd(adapter, BLOGIC_INIT_EXT_MBOX, &extmbox_req, sizeof(extmbox_req), NULL, 0) < 0) return blogic_failure(adapter, "MAILBOX INITIALIZATION"); /* Enable Strict Round Robin Mode if supported by the Host Adapter. In Strict Round Robin Mode, the Host Adapter only looks at the next Outgoing Mailbox for each new command, rather than scanning through all the Outgoing Mailboxes to find any that have new commands in them. Strict Round Robin Mode is significantly more efficient.
*/ if (adapter->strict_rr) {
rr_req = BLOGIC_STRICT_RR_MODE; if (blogic_cmd(adapter, BLOGIC_STRICT_RR, &rr_req, sizeof(rr_req), NULL, 0) < 0) return blogic_failure(adapter, "ENABLE STRICT ROUND ROBIN MODE");
}
/* For Host Adapters that support Extended LUN Format CCBs, issue the Set CCB Format command to allow 32 Logical Units per Target Device.
*/ if (adapter->ext_lun) {
setccb_fmt = BLOGIC_EXT_LUN_CCB; if (blogic_cmd(adapter, BLOGIC_SETCCB_FMT, &setccb_fmt, sizeof(setccb_fmt), NULL, 0) < 0) return blogic_failure(adapter, "SET CCB FORMAT");
}
/* Wait a few seconds between the Host Adapter Hard Reset which initiates a SCSI Bus Reset and issuing any SCSI Commands. Some SCSI devices get confused if they receive SCSI Commands too soon after a SCSI Bus Reset.
*/
blogic_delay(adapter->bus_settle_time); /* FlashPoint Host Adapters do not provide for Target Device Inquiry.
*/ if (blogic_flashpoint_type(adapter)) returntrue; /* Inhibit the Target Device Inquiry if requested.
*/ if (adapter->drvr_opts != NULL && adapter->drvr_opts->stop_tgt_inquiry) returntrue; /* Issue the Inquire Target Devices command for host adapters with firmware version 4.25 or later, or the Inquire Installed Devices ID 0 to 7 command for older host adapters. This is necessary to force Synchronous Transfer Negotiation so that the Inquire Setup Information and Inquire Synchronous Period commands will return valid data. The Inquire Target Devices command is preferable to Inquire Installed Devices ID 0 to 7 since it only probes Logical Unit 0 of each Target Device.
*/ if (strcmp(adapter->fw_ver, "4.25") >= 0) {
/* Issue a Inquire Target Devices command. Inquire Target Devices only tests Logical Unit 0 of each Target Device unlike the Inquire Installed Devices commands which test Logical Units 0 - 7. Two bytes are returned, where byte 0 bit 0 set indicates that Target Device 0 exists, and so on.
*/
/* Issue an Inquire Installed Devices command. For each Target Device, a byte is returned where bit 0 set indicates that Logical Unit 0 * exists, bit 1 set indicates that Logical Unit 1 exists, and so on.
*/
if (blogic_cmd(adapter, BLOGIC_INQ_DEV0TO7, NULL, 0,
&installed_devs0to7, sizeof(installed_devs0to7))
!= sizeof(installed_devs0to7)) return blogic_failure(adapter, "INQUIRE INSTALLED DEVICES ID 0 TO 7"); for (tgt_id = 0; tgt_id < 8; tgt_id++)
adapter->tgt_flags[tgt_id].tgt_exists =
installed_devs0to7[tgt_id] != 0;
} /* Issue the Inquire Setup Information command.
*/
req_replylen = sizeof(setupinfo); if (blogic_cmd(adapter, BLOGIC_INQ_SETUPINFO, &req_replylen, sizeof(req_replylen), &setupinfo, sizeof(setupinfo))
!= sizeof(setupinfo)) return blogic_failure(adapter, "INQUIRE SETUP INFORMATION"); for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
adapter->sync_offset[tgt_id] = (tgt_id < 8 ? setupinfo.sync0to7[tgt_id].offset : setupinfo.sync8to15[tgt_id - 8].offset); if (strcmp(adapter->fw_ver, "5.06L") >= 0) for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
adapter->tgt_flags[tgt_id].wide_active = (tgt_id < 8 ? (setupinfo.wide_tx_active0to7 & (1 << tgt_id) ? true : false) : (setupinfo.wide_tx_active8to15 & (1 << (tgt_id - 8)) ? true : false)); /* Issue the Inquire Synchronous Period command.
*/ if (adapter->fw_ver[0] >= '3') {
/* Issue a Inquire Synchronous Period command. For each Target Device, a byte is returned which represents the Synchronous Transfer Period in units of 10 nanoseconds.
*/
/* blogic_inithoststruct initializes the fields in the SCSI Host structure. The base, io_port, n_io_ports, irq, and dma_channel fields in the SCSI Host structure are intentionally left uninitialized, as this driver handles acquisition and release of these resources explicitly, as well as ensuring exclusive access to the Host Adapter hardware and data structures through explicit acquisition and release of the Host Adapter's Lock.
*/
/* blogic_sdev_configure will actually set the queue depth on individual scsi devices as they are permanently added to the device chain. We shamelessly rip off the SelectQueueDepths code to make this work mostly like it used to. Since we don't get called once at the end of the scan but instead get called for each device, we have to do things a bit differently.
*/ staticint blogic_sdev_configure(struct scsi_device *dev, struct queue_limits *lim)
{ struct blogic_adapter *adapter =
(struct blogic_adapter *) dev->host->hostdata; int tgt_id = dev->id; int qdepth = adapter->qdepth[tgt_id];
/* blogic_init probes for BusLogic Host Adapters at the standard I/O Addresses where they may be located, initializing, registering, and reporting the configuration of each BusLogic Host Adapter it finds. It returns the number of BusLogic Host Adapters successfully initialized and registered.
*/
staticint __init blogic_init(void)
{ int drvr_optindex = 0, probeindex; struct blogic_adapter *adapter; int ret = 0;
#ifdef MODULE if (BusLogic)
blogic_setup(BusLogic); #endif
if (blogic_probe_options.noprobe) return -ENODEV;
blogic_probeinfo_list =
kcalloc(BLOGIC_MAX_ADAPTERS, sizeof(struct blogic_probeinfo),
GFP_KERNEL); if (blogic_probeinfo_list == NULL) {
blogic_err("BusLogic: Unable to allocate Probe Info List\n",
NULL); return -ENOMEM;
}
/* Make sure region is free prior to probing.
*/ if (!request_region(myadapter->io_addr, myadapter->addr_count, "BusLogic")) continue; /* Probe the Host Adapter. If unsuccessful, abort further initialization.
*/ if (!blogic_probe(myadapter)) {
release_region(myadapter->io_addr,
myadapter->addr_count); continue;
} /* Hard Reset the Host Adapter. If unsuccessful, abort further initialization.
*/ if (!blogic_hwreset(myadapter, true)) {
release_region(myadapter->io_addr,
myadapter->addr_count); continue;
} /* Check the Host Adapter. If unsuccessful, abort further initialization.
*/ if (!blogic_checkadapter(myadapter)) {
release_region(myadapter->io_addr,
myadapter->addr_count); continue;
} /* Initialize the Driver Options field if provided.
*/ if (drvr_optindex < blogic_drvr_options_count)
myadapter->drvr_opts =
&blogic_drvr_options[drvr_optindex++]; /* Announce the Driver Version and Date, Author's Name, Copyright Notice, and Electronic Mail Address.
*/
blogic_announce_drvr(myadapter); /* Register the SCSI Host structure.
*/
host = scsi_host_alloc(&blogic_template, sizeof(struct blogic_adapter)); if (host == NULL) {
release_region(myadapter->io_addr,
myadapter->addr_count); continue;
}
myadapter = (struct blogic_adapter *) host->hostdata;
memcpy(myadapter, adapter, sizeof(struct blogic_adapter));
myadapter->scsi_host = host;
myadapter->host_no = host->host_no; /* Add Host Adapter to the end of the list of registered BusLogic Host Adapters.
*/
list_add_tail(&myadapter->host_list, &blogic_host_list);
/* Read the Host Adapter Configuration, Configure the Host Adapter, Acquire the System Resources necessary to use the Host Adapter, then Create the Initial CCBs, Initialize the Host Adapter, and finally perform Target Device Inquiry. From this point onward, any failure will be assumed to be due to a problem with the Host Adapter, rather than due to having mistakenly identified this port as belonging to a BusLogic Host Adapter. The I/O Address range will not be released, thereby preventing it from being incorrectly identified as any other type of Host Adapter.
*/ if (blogic_rdconfig(myadapter) &&
blogic_reportconfig(myadapter) &&
blogic_getres(myadapter) &&
blogic_create_initccbs(myadapter) &&
blogic_initadapter(myadapter) &&
blogic_inquiry(myadapter)) { /* Initialization has been completed successfully. Release and re-register usage of the I/O Address range so that the Model Name of the Host Adapter will appear, and initialize the SCSI Host structure.
*/
release_region(myadapter->io_addr,
myadapter->addr_count); if (!request_region(myadapter->io_addr,
myadapter->addr_count,
myadapter->full_model)) {
printk(KERN_WARNING "BusLogic: Release and re-register of " "port 0x%04lx failed \n",
(unsignedlong)myadapter->io_addr);
blogic_destroy_ccbs(myadapter);
blogic_relres(myadapter);
list_del(&myadapter->host_list);
scsi_host_put(host);
ret = -ENOMEM;
} else {
blogic_inithoststruct(myadapter,
host); if (scsi_add_host(host, myadapter->pci_device
? &myadapter->pci_device->dev
: NULL)) {
printk(KERN_WARNING "BusLogic: scsi_add_host()" "failed!\n");
blogic_destroy_ccbs(myadapter);
blogic_relres(myadapter);
list_del(&myadapter->host_list);
scsi_host_put(host);
ret = -ENODEV;
} else
scsi_scan_host(host);
}
} else { /* An error occurred during Host Adapter Configuration Querying, Host Adapter Configuration, Resource Acquisition, CCB Creation, Host Adapter Initialization, or Target Device Inquiry, so remove Host Adapter from the list of registered BusLogic Host Adapters, destroy the CCBs, Release the System Resources, and Unregister the SCSI Host.
*/
blogic_destroy_ccbs(myadapter);
blogic_relres(myadapter);
list_del(&myadapter->host_list);
scsi_host_put(host);
ret = -ENODEV;
}
}
kfree(adapter);
kfree(blogic_probeinfo_list);
blogic_probeinfo_list = NULL; return ret;
}
/* blogic_deladapter releases all resources previously acquired to support a specific Host Adapter, including the I/O Address range, and unregisters the BusLogic Host Adapter.
*/
/* FlashPoint Host Adapters must first be released by the FlashPoint SCCB Manager.
*/ if (blogic_flashpoint_type(adapter))
FlashPoint_ReleaseHostAdapter(adapter->cardhandle); /* Destroy the CCBs and release any system resources acquired to support Host Adapter.
*/
blogic_destroy_ccbs(adapter);
blogic_relres(adapter); /* Release usage of the I/O Address range.
*/
release_region(adapter->io_addr, adapter->addr_count); /* Remove Host Adapter from the list of registered BusLogic Host Adapters.
*/
list_del(&adapter->host_list);
scsi_host_put(host); return 0;
}
/* blogic_qcompleted_ccb queues CCB for completion processing.
*/
switch (adapter_status) { case BLOGIC_CMD_CMPLT_NORMAL: case BLOGIC_LINK_CMD_CMPLT: case BLOGIC_LINK_CMD_CMPLT_FLAG:
hoststatus = DID_OK; break; case BLOGIC_SELECT_TIMEOUT:
hoststatus = DID_TIME_OUT; break; case BLOGIC_INVALID_OUTBOX_CODE: case BLOGIC_INVALID_CMD_CODE: case BLOGIC_BAD_CMD_PARAM:
blogic_warn("BusLogic Driver Protocol Error 0x%02X\n",
adapter, adapter_status);
fallthrough; case BLOGIC_DATA_UNDERRUN: case BLOGIC_DATA_OVERRUN: case BLOGIC_NOEXPECT_BUSFREE: case BLOGIC_LINKCCB_BADLUN: case BLOGIC_AUTOREQSENSE_FAIL: case BLOGIC_TAGQUEUE_REJECT: case BLOGIC_BAD_MSG_RCVD: case BLOGIC_HW_FAIL: case BLOGIC_BAD_RECONNECT: case BLOGIC_ABRT_QUEUE: case BLOGIC_ADAPTER_SW_ERROR: case BLOGIC_HW_TIMEOUT: case BLOGIC_PARITY_ERR:
hoststatus = DID_ERROR; break; case BLOGIC_INVALID_BUSPHASE: case BLOGIC_NORESPONSE_TO_ATN: case BLOGIC_HW_RESET: case BLOGIC_RST_FROM_OTHERDEV: case BLOGIC_HW_BDR:
hoststatus = DID_RESET; break; default:
blogic_warn("Unknown Host Adapter Status 0x%02X\n", adapter,
adapter_status);
hoststatus = DID_ERROR; break;
} return (hoststatus << 16) | tgt_status;
}
/* * turn the dma address from an inbox into a ccb pointer * This is rather inefficient.
*/ staticstruct blogic_ccb *
blogic_inbox_to_ccb(struct blogic_adapter *adapter, struct blogic_inbox *inbox)
{ struct blogic_ccb *ccb;
for (ccb = adapter->all_ccbs; ccb; ccb = ccb->next_all) if (inbox->ccb == ccb->dma_handle) break;
return ccb;
}
/* blogic_scan_inbox scans the Incoming Mailboxes saving any Incoming Mailbox entries for completion processing.
*/ staticvoid blogic_scan_inbox(struct blogic_adapter *adapter)
{ /* Scan through the Incoming Mailboxes in Strict Round Robin fashion, saving any completed CCBs for further processing. It is essential that for each CCB and SCSI Command issued, command completion processing is performed exactly once. Therefore, only Incoming Mailboxes with completion code Command Completed Without Error, Command Completed With Error, or Command Aborted At Host Request are saved for completion processing. When an Incoming Mailbox has a completion code of Aborted Command Not Found, the CCB had already completed or been aborted before the current Abort request was processed, and so completion processing has already occurred and no further action should be taken.
*/ struct blogic_inbox *next_inbox = adapter->next_inbox; enum blogic_cmplt_code comp_code;
while ((comp_code = next_inbox->comp_code) != BLOGIC_INBOX_FREE) { struct blogic_ccb *ccb = blogic_inbox_to_ccb(adapter, next_inbox); if (!ccb) { /* * This should never happen, unless the CCB list is * corrupted in memory.
*/
blogic_warn("Could not find CCB for dma address %x\n", adapter, next_inbox->ccb);
} elseif (comp_code != BLOGIC_CMD_NOTFOUND) { if (ccb->status == BLOGIC_CCB_ACTIVE ||
ccb->status == BLOGIC_CCB_RESET) { /* Save the Completion Code for this CCB and queue the CCB for completion processing.
*/
ccb->comp_code = comp_code;
blogic_qcompleted_ccb(ccb);
} else { /* If a CCB ever appears in an Incoming Mailbox and is not marked as status Active or Reset, then there is most likely a bug in the Host Adapter firmware.
*/
blogic_warn("Illegal CCB #%ld status %d in Incoming Mailbox\n", adapter, ccb->serial, ccb->status);
}
}
next_inbox->comp_code = BLOGIC_INBOX_FREE; if (++next_inbox > adapter->last_inbox)
next_inbox = adapter->first_inbox;
}
adapter->next_inbox = next_inbox;
}
/* blogic_process_ccbs iterates over the completed CCBs for Host Adapter setting the SCSI Command Result Codes, deallocating the CCBs, and calling the SCSI Subsystem Completion Routines. The Host Adapter's Lock should already have been acquired by the caller.
*/
staticvoid blogic_process_ccbs(struct blogic_adapter *adapter)
{ if (adapter->processing_ccbs) return;
adapter->processing_ccbs = true; while (adapter->firstccb != NULL) { struct blogic_ccb *ccb = adapter->firstccb; struct scsi_cmnd *command = ccb->command;
adapter->firstccb = ccb->next; if (adapter->firstccb == NULL)
adapter->lastccb = NULL; /* Process the Completed CCB.
*/ if (ccb->opcode == BLOGIC_BDR) { int tgt_id = ccb->tgt_id;
blogic_warn("Bus Device Reset CCB #%ld to Target %d Completed\n", adapter, ccb->serial, tgt_id);
blogic_inc_count(&adapter->tgt_stats[tgt_id].bdr_done);
adapter->tgt_flags[tgt_id].tagq_active = false;
adapter->cmds_since_rst[tgt_id] = 0;
adapter->last_resetdone[tgt_id] = jiffies; /* Place CCB back on the Host Adapter's free list.
*/
blogic_dealloc_ccb(ccb, 1); #if 0 /* this needs to be redone different for new EH */ /* Bus Device Reset CCBs have the command field non-NULL only when a Bus Device Reset was requested for a command that did not have a currently active CCB in the Host Adapter (i.e., a Synchronous Bus Device Reset), and hence would not have its Completion Routine called otherwise.
*/ while (command != NULL) { struct scsi_cmnd *nxt_cmd =
command->reset_chain;
command->reset_chain = NULL;
command->result = DID_RESET << 16;
scsi_done(command);
command = nxt_cmd;
} #endif /* Iterate over the CCBs for this Host Adapter performing completion processing for any CCBs marked as Reset for this Target.
*/ for (ccb = adapter->all_ccbs; ccb != NULL;
ccb = ccb->next_all) if (ccb->status == BLOGIC_CCB_RESET &&
ccb->tgt_id == tgt_id) {
command = ccb->command;
blogic_dealloc_ccb(ccb, 1);
adapter->active_cmds[tgt_id]--;
command->result = DID_RESET << 16;
scsi_done(command);
}
adapter->bdr_pend[tgt_id] = NULL;
} else { /* Translate the Completion Code, Host Adapter Status, and Target Device Status into a SCSI Subsystem Result Code.
*/ switch (ccb->comp_code) { case BLOGIC_INBOX_FREE: case BLOGIC_CMD_NOTFOUND: case BLOGIC_INVALID_CCB:
blogic_warn("CCB #%ld to Target %d Impossible State\n", adapter, ccb->serial, ccb->tgt_id); break; case BLOGIC_CMD_COMPLETE_GOOD:
adapter->tgt_stats[ccb->tgt_id]
.cmds_complete++;
adapter->tgt_flags[ccb->tgt_id]
.cmd_good = true;
command->result = DID_OK << 16; break; case BLOGIC_CMD_ABORT_BY_HOST:
blogic_warn("CCB #%ld to Target %d Aborted\n",
adapter, ccb->serial, ccb->tgt_id);
blogic_inc_count(&adapter->tgt_stats[ccb->tgt_id].aborts_done);
command->result = DID_ABORT << 16; break; case BLOGIC_CMD_COMPLETE_ERROR:
command->result = blogic_resultcode(adapter,
ccb->adapter_status, ccb->tgt_status); if (ccb->adapter_status != BLOGIC_SELECT_TIMEOUT) {
adapter->tgt_stats[ccb->tgt_id]
.cmds_complete++; if (blogic_global_options.trace_err) { int i;
blogic_notice("CCB #%ld Target %d: Result %X Host " "Adapter Status %02X Target Status %02X\n", adapter, ccb->serial, ccb->tgt_id, command->result, ccb->adapter_status, ccb->tgt_status);
blogic_notice("CDB ", adapter); for (i = 0; i < ccb->cdblen; i++)
blogic_notice(" %02X", adapter, ccb->cdb[i]);
blogic_notice("\n", adapter);
blogic_notice("Sense ", adapter); for (i = 0; i < ccb->sense_datalen; i++)
blogic_notice(" %02X", adapter, command->sense_buffer[i]);
blogic_notice("\n", adapter);
}
} break;
} /* When an INQUIRY command completes normally, save the CmdQue (Tagged Queuing Supported) and WBus16 (16 Bit Wide Data Transfers Supported) bits.
*/ if (ccb->cdb[0] == INQUIRY && ccb->cdb[1] == 0 &&
ccb->adapter_status == BLOGIC_CMD_CMPLT_NORMAL) { struct blogic_tgt_flags *tgt_flags =
&adapter->tgt_flags[ccb->tgt_id]; struct scsi_inquiry *inquiry =
(struct scsi_inquiry *) scsi_sglist(command);
tgt_flags->tgt_exists = true;
tgt_flags->tagq_ok = inquiry->CmdQue;
tgt_flags->wide_ok = inquiry->WBus16;
} /* Place CCB back on the Host Adapter's free list.
*/
blogic_dealloc_ccb(ccb, 1); /* Call the SCSI Command Completion Routine.
*/
scsi_done(command);
}
}
adapter->processing_ccbs = false;
}
/* blogic_inthandler handles hardware interrupts from BusLogic Host Adapters.
*/
static irqreturn_t blogic_inthandler(int irq_ch, void *devid)
{ struct blogic_adapter *adapter = (struct blogic_adapter *) devid; unsignedlong processor_flag; /* Acquire exclusive access to Host Adapter.
*/
spin_lock_irqsave(adapter->scsi_host->host_lock, processor_flag); /* Handle Interrupts appropriately for each Host Adapter type.
*/ if (blogic_multimaster_type(adapter)) { union blogic_int_reg intreg; /* Read the Host Adapter Interrupt Register.
*/
intreg.all = blogic_rdint(adapter); if (intreg.ir.int_valid) { /* Acknowledge the interrupt and reset the Host Adapter Interrupt Register.
*/
blogic_intreset(adapter); /* Process valid External SCSI Bus Reset and Incoming Mailbox Loaded Interrupts. Command Complete Interrupts are noted, and Outgoing Mailbox Available Interrupts are ignored, as they are never enabled.
*/ if (intreg.ir.ext_busreset)
adapter->adapter_extreset = true; elseif (intreg.ir.mailin_loaded)
blogic_scan_inbox(adapter); elseif (intreg.ir.cmd_complete)
adapter->adapter_cmd_complete = true;
}
} else { /* Check if there is a pending interrupt for this Host Adapter.
*/ if (FlashPoint_InterruptPending(adapter->cardhandle)) switch (FlashPoint_HandleInterrupt(adapter->cardhandle)) { case FPOINT_NORMAL_INT: break; case FPOINT_EXT_RESET:
adapter->adapter_extreset = true; break; case FPOINT_INTERN_ERR:
blogic_warn("Internal FlashPoint Error detected - Resetting Host Adapter\n", adapter);
adapter->adapter_intern_err = true; break;
}
} /* Process any completed CCBs.
*/ if (adapter->firstccb != NULL)
blogic_process_ccbs(adapter); /* Reset the Host Adapter if requested.
*/ if (adapter->adapter_extreset) {
blogic_warn("Resetting %s due to External SCSI Bus Reset\n", adapter, adapter->full_model);
blogic_inc_count(&adapter->ext_resets);
blogic_resetadapter(adapter, false);
adapter->adapter_extreset = false;
} elseif (adapter->adapter_intern_err) {
blogic_warn("Resetting %s due to Host Adapter Internal Error\n", adapter, adapter->full_model);
blogic_inc_count(&adapter->adapter_intern_errors);
blogic_resetadapter(adapter, true);
adapter->adapter_intern_err = false;
} /* Release exclusive access to Host Adapter.
*/
spin_unlock_irqrestore(adapter->scsi_host->host_lock, processor_flag); return IRQ_HANDLED;
}
/* blogic_write_outbox places CCB and Action Code into an Outgoing Mailbox for execution by Host Adapter. The Host Adapter's Lock should already have been acquired by the caller.
*/
next_outbox = adapter->next_outbox; if (next_outbox->action == BLOGIC_OUTBOX_FREE) {
ccb->status = BLOGIC_CCB_ACTIVE; /* The CCB field must be written before the Action Code field since the Host Adapter is operating asynchronously and the locking code does not protect against simultaneous access by the Host Adapter.
*/
next_outbox->ccb = ccb->dma_handle;
next_outbox->action = action;
blogic_execmbox(adapter); if (++next_outbox > adapter->last_outbox)
next_outbox = adapter->first_outbox;
adapter->next_outbox = next_outbox; if (action == BLOGIC_MBOX_START) {
adapter->active_cmds[ccb->tgt_id]++; if (ccb->opcode != BLOGIC_BDR)
adapter->tgt_stats[ccb->tgt_id].cmds_tried++;
} returntrue;
} returnfalse;
}
/* SCSI REQUEST_SENSE commands will be executed automatically by the Host Adapter for any errors, so they should not be executed explicitly unless the Sense Data is zero indicating that no error occurred.
*/ if (cdb[0] == REQUEST_SENSE && command->sense_buffer[0] != 0) {
command->result = DID_OK << 16;
comp_cb(command); return 0;
} /* Allocate a CCB from the Host Adapter's free list. In the unlikely event that there are none available and memory allocation fails, wait 1 second and try again. If that fails, the Host Adapter is probably hung so signal an error as a Host Adapter Hard Reset should be initiated soon.
*/
ccb = blogic_alloc_ccb(adapter); if (ccb == NULL) {
spin_unlock_irq(adapter->scsi_host->host_lock);
blogic_delay(1);
spin_lock_irq(adapter->scsi_host->host_lock);
ccb = blogic_alloc_ccb(adapter); if (ccb == NULL) {
command->result = DID_ERROR << 16;
comp_cb(command); return 0;
}
}
/* Initialize the fields in the BusLogic Command Control Block (CCB).
*/
count = scsi_dma_map(command);
BUG_ON(count < 0); if (count) { struct scatterlist *sg; int i;
switch (cdb[0]) { case READ_6: case READ_10:
ccb->datadir = BLOGIC_DATAIN_CHECKED;
tgt_stats[tgt_id].read_cmds++;
blogic_addcount(&tgt_stats[tgt_id].bytesread, buflen);
blogic_incszbucket(tgt_stats[tgt_id].read_sz_buckets, buflen); break; case WRITE_6: case WRITE_10:
ccb->datadir = BLOGIC_DATAOUT_CHECKED;
tgt_stats[tgt_id].write_cmds++;
blogic_addcount(&tgt_stats[tgt_id].byteswritten, buflen);
blogic_incszbucket(tgt_stats[tgt_id].write_sz_buckets, buflen); break; default:
ccb->datadir = BLOGIC_UNCHECKED_TX; break;
}
ccb->cdblen = cdblen;
ccb->adapter_status = 0;
ccb->tgt_status = 0;
ccb->tgt_id = tgt_id;
ccb->lun = lun;
ccb->tag_enable = false;
ccb->legacytag_enable = false; /* BusLogic recommends that after a Reset the first couple of commands that are sent to a Target Device be sent in a non Tagged Queue fashion so that the Host Adapter and Target Device can establish Synchronous and Wide Transfer before Queue Tag messages can interfere with the Synchronous and Wide Negotiation messages. By waiting to enable Tagged Queuing until after the first BLOGIC_MAX_TAG_DEPTH commands have been queued, it is assured that after a Reset any pending commands are requeued before Tagged Queuing is enabled and that the Tagged Queuing message will not occur while the partition table is being printed. In addition, some devices do not properly handle the transition from non-tagged to tagged commands, so it is necessary to wait until there are no pending commands for a target device before queuing tagged commands.
*/ if (adapter->cmds_since_rst[tgt_id]++ >= BLOGIC_MAX_TAG_DEPTH &&
!tgt_flags->tagq_active &&
adapter->active_cmds[tgt_id] == 0
&& tgt_flags->tagq_ok &&
(adapter->tagq_ok & (1 << tgt_id))) {
tgt_flags->tagq_active = true;
blogic_notice("Tagged Queuing now active for Target %d\n",
adapter, tgt_id);
} if (tgt_flags->tagq_active) { enum blogic_queuetag queuetag = BLOGIC_SIMPLETAG; /* When using Tagged Queuing with Simple Queue Tags, it appears that disk drive controllers do not guarantee that a queued command will not remain in a disconnected state indefinitely if commands that read or write nearer the head position continue to arrive without interruption. Therefore, for each Target Device this driver keeps track of the last time either the queue was empty or an Ordered Queue Tag was issued. If more than 4 seconds (one fifth of the 20 second disk timeout) have elapsed since this last sequence point, this command will be issued with an Ordered Queue Tag rather than a Simple Queue Tag, which forces the Target Device to complete all previously queued commands before this command may be executed.
*/ if (adapter->active_cmds[tgt_id] == 0)
adapter->last_seqpoint[tgt_id] = jiffies; elseif (time_after(jiffies,
adapter->last_seqpoint[tgt_id] + 4 * HZ)) {
adapter->last_seqpoint[tgt_id] = jiffies;
queuetag = BLOGIC_ORDEREDTAG;
} if (adapter->ext_lun) {
ccb->tag_enable = true;
ccb->queuetag = queuetag;
} else {
ccb->legacytag_enable = true;
ccb->legacy_tag = queuetag;
}
}
memcpy(ccb->cdb, cdb, cdblen);
ccb->sense_datalen = SCSI_SENSE_BUFFERSIZE;
ccb->command = command;
sense_buf = dma_map_single(&adapter->pci_device->dev,
command->sense_buffer, ccb->sense_datalen,
DMA_FROM_DEVICE); if (dma_mapping_error(&adapter->pci_device->dev, sense_buf)) {
blogic_err("DMA mapping for sense data buffer failed\n",
adapter);
blogic_dealloc_ccb(ccb, 0); return SCSI_MLQUEUE_HOST_BUSY;
}
ccb->sensedata = sense_buf; if (blogic_multimaster_type(adapter)) { /* Place the CCB in an Outgoing Mailbox. The higher levels of the SCSI Subsystem should not attempt to queue more commands than can be placed in Outgoing Mailboxes, so there should always be one free. In the unlikely event that there are none available, wait 1 second and try again. If that fails, the Host Adapter is probably hung so signal an error as a Host Adapter Hard Reset should be initiated soon.
*/ if (!blogic_write_outbox(adapter, BLOGIC_MBOX_START, ccb)) {
spin_unlock_irq(adapter->scsi_host->host_lock);
blogic_warn("Unable to write Outgoing Mailbox - Pausing for 1 second\n", adapter);
blogic_delay(1);
spin_lock_irq(adapter->scsi_host->host_lock); if (!blogic_write_outbox(adapter, BLOGIC_MBOX_START,
ccb)) {
blogic_warn("Still unable to write Outgoing Mailbox - Host Adapter Dead?\n", adapter);
blogic_dealloc_ccb(ccb, 1);
command->result = DID_ERROR << 16;
scsi_done(command);
}
}
} else { /* Call the FlashPoint SCCB Manager to start execution of the CCB.
*/
ccb->status = BLOGIC_CCB_ACTIVE;
adapter->active_cmds[tgt_id]++;
tgt_stats[tgt_id].cmds_tried++;
FlashPoint_StartCCB(adapter->cardhandle, ccb); /* The Command may have already completed and blogic_qcompleted_ccb been called, or it may still be pending.
*/ if (ccb->status == BLOGIC_CCB_COMPLETE)
blogic_process_ccbs(adapter);
} return 0;
}
static DEF_SCSI_QCMD(blogic_qcmd)
#if 0 /* blogic_abort aborts Command if possible.
*/
int tgt_id = command->device->id; struct blogic_ccb *ccb;
blogic_inc_count(&adapter->tgt_stats[tgt_id].aborts_request);
/* Attempt to find an Active CCB for this Command. If no Active CCB for this Command is found, then no Abort is necessary.
*/ for (ccb = adapter->all_ccbs; ccb != NULL; ccb = ccb->next_all) if (ccb->command == command) break; if (ccb == NULL) {
blogic_warn("Unable to Abort Command to Target %d - No CCB Found\n", adapter, tgt_id); return SUCCESS;
} elseif (ccb->status == BLOGIC_CCB_COMPLETE) {
blogic_warn("Unable to Abort Command to Target %d - CCB Completed\n", adapter, tgt_id); return SUCCESS;
} elseif (ccb->status == BLOGIC_CCB_RESET) {
blogic_warn("Unable to Abort Command to Target %d - CCB Reset\n", adapter, tgt_id); return SUCCESS;
} if (blogic_multimaster_type(adapter)) { /* Attempt to Abort this CCB. MultiMaster Firmware versions prior to 5.xx do not generate Abort Tag messages, but only generate the non-tagged Abort message. Since non-tagged commands are not sent by the Host Adapter until the queue of outstanding tagged commands has completed, and the Abort message is treated as a non-tagged command, it is effectively impossible to abort commands when Tagged Queuing is active. Firmware version 5.xx does generate Abort Tag messages, so it is possible to abort commands when Tagged Queuing is active.
*/ if (adapter->tgt_flags[tgt_id].tagq_active &&
adapter->fw_ver[0] < '5') {
blogic_warn("Unable to Abort CCB #%ld to Target %d - Abort Tag Not Supported\n", adapter, ccb->serial, tgt_id); return FAILURE;
} elseif (blogic_write_outbox(adapter, BLOGIC_MBOX_ABORT,
ccb)) {
blogic_warn("Aborting CCB #%ld to Target %d\n",
adapter, ccb->serial, tgt_id);
blogic_inc_count(&adapter->tgt_stats[tgt_id].aborts_tried); return SUCCESS;
} else {
blogic_warn("Unable to Abort CCB #%ld to Target %d - No Outgoing Mailboxes\n", adapter, ccb->serial, tgt_id); return FAILURE;
}
} else { /* Call the FlashPoint SCCB Manager to abort execution of the CCB.
*/
blogic_warn("Aborting CCB #%ld to Target %d\n", adapter,
ccb->serial, tgt_id);
blogic_inc_count(&adapter->tgt_stats[tgt_id].aborts_tried);
FlashPoint_AbortCCB(adapter->cardhandle, ccb); /* The Abort may have already been completed and blogic_qcompleted_ccb been called, or it may still be pending.
*/ if (ccb->status == BLOGIC_CCB_COMPLETE)
blogic_process_ccbs(adapter); return SUCCESS;
} return SUCCESS;
}
#endif /* blogic_resetadapter resets Host Adapter if possible, marking all currently executing SCSI Commands as having been Reset.
*/
for (ccb = adapter->all_ccbs; ccb != NULL; ccb = ccb->next_all) if (ccb->status == BLOGIC_CCB_ACTIVE)
blogic_dealloc_ccb(ccb, 1); /* * Wait a few seconds between the Host Adapter Hard Reset which * initiates a SCSI Bus Reset and issuing any SCSI Commands. Some * SCSI devices get confused if they receive SCSI Commands too soon * after a SCSI Bus Reset.
*/
if (hard_reset) {
spin_unlock_irq(adapter->scsi_host->host_lock);
blogic_delay(adapter->bus_settle_time);
spin_lock_irq(adapter->scsi_host->host_lock);
}
/* blogic_diskparam returns the Heads/Sectors/Cylinders BIOS Disk Parameters for Disk. The default disk geometry is 64 heads, 32 sectors, and the appropriate number of cylinders so as not to exceed drive capacity. In order for disks equal to or larger than 1 GB to be addressable by the BIOS without exceeding the BIOS limitation of 1024 cylinders, Extended Translation may be enabled in AutoSCSI on FlashPoint Host Adapters and on "W" and "C" series MultiMaster Host Adapters, or by a dip switch setting on "S" and "A" series MultiMaster Host Adapters. With Extended Translation enabled, drives between 1 GB inclusive and 2 GB exclusive are given a disk geometry of 128 heads and 32 sectors, and drives above 2 GB inclusive are given a disk geometry of 255 heads and 63 sectors. However, if the BIOS detects that the Extended Translation setting does not match the geometry in the partition table, then the translation inferred from the partition table will be used by the BIOS, and a warning may be displayed.
*/
/* blogic_parseopts handles processing of BusLogic Driver Options specifications.
BusLogic Driver Options may be specified either via the Linux Kernel Command Line or via the Loadable Kernel Module Installation Facility. Driver Options for multiple host adapters may be specified either by separating the option strings by a semicolon, or by specifying multiple "BusLogic=" strings on the command line. Individual option specifications for a single host adapter are separated by commas. The Probing and Debugging Options apply to all host adapters whereas the remaining options apply individually only to the selected host adapter.
The BusLogic Driver Probing Options are described in <file:Documentation/scsi/BusLogic.rst>.
*/
staticint __init blogic_parseopts(char *options)
{ while (true) { struct blogic_drvr_options *drvr_opts =
&blogic_drvr_options[blogic_drvr_options_count++]; int tgt_id;
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