| // SPDX-License-Identifier: GPL-2.0-only |
| |
| /* |
| |
| 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" |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/interrupt.h> |
| #include <linux/types.h> |
| #include <linux/blkdev.h> |
| #include <linux/delay.h> |
| #include <linux/ioport.h> |
| #include <linux/mm.h> |
| #include <linux/stat.h> |
| #include <linux/pci.h> |
| #include <linux/spinlock.h> |
| #include <linux/jiffies.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/slab.h> |
| #include <linux/msdos_partition.h> |
| #include <scsi/scsicam.h> |
| |
| #include <asm/dma.h> |
| #include <asm/io.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi_tcq.h> |
| #include "BusLogic.h" |
| #include "FlashPoint.c" |
| |
| #ifndef FAILURE |
| #define FAILURE (-1) |
| #endif |
| |
| static struct scsi_host_template blogic_template; |
| |
| /* |
| 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. |
| */ |
| |
| static int 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. |
| */ |
| |
| static struct blogic_drvr_options blogic_drvr_options[BLOGIC_MAX_ADAPTERS]; |
| |
| |
| /* |
| BusLogic can be assigned a string by insmod. |
| */ |
| |
| MODULE_LICENSE("GPL"); |
| #ifdef MODULE |
| static char *BusLogic; |
| module_param(BusLogic, charp, 0); |
| #endif |
| |
| |
| /* |
| blogic_probe_options is a set of Probe Options to be applied across |
| all BusLogic Host Adapters. |
| */ |
| |
| static struct blogic_probe_options blogic_probe_options; |
| |
| |
| /* |
| blogic_global_options is a set of Global Options to be applied across |
| all BusLogic Host Adapters. |
| */ |
| |
| static struct blogic_global_options blogic_global_options; |
| |
| static LIST_HEAD(blogic_host_list); |
| |
| /* |
| blogic_probeinfo_count is the number of entries in blogic_probeinfo_list. |
| */ |
| |
| static int 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. |
| */ |
| |
| static struct blogic_probeinfo *blogic_probeinfo_list; |
| |
| |
| /* |
| 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. |
| */ |
| |
| static char *blogic_cmd_failure_reason; |
| |
| /* |
| blogic_announce_drvr announces the Driver Version and Date, Author's |
| Name, Copyright Notice, and Electronic Mail Address. |
| */ |
| |
| static void 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. |
| */ |
| |
| static const char *blogic_drvr_info(struct Scsi_Host *host) |
| { |
| struct blogic_adapter *adapter = |
| (struct blogic_adapter *) host->hostdata; |
| return adapter->full_model; |
| } |
| |
| /* |
| 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. |
| */ |
| |
| static void blogic_init_ccbs(struct blogic_adapter *adapter, void *blk_pointer, |
| int blk_size, dma_addr_t blkp) |
| { |
| struct blogic_ccb *ccb = (struct blogic_ccb *) blk_pointer; |
| unsigned int offset = 0; |
| memset(blk_pointer, 0, blk_size); |
| ccb->allocgrp_head = blkp; |
| ccb->allocgrp_size = blk_size; |
| while ((blk_size -= sizeof(struct blogic_ccb)) >= 0) { |
| ccb->status = BLOGIC_CCB_FREE; |
| ccb->adapter = adapter; |
| ccb->dma_handle = (u32) blkp + offset; |
| if (blogic_flashpoint_type(adapter)) { |
| ccb->callback = blogic_qcompleted_ccb; |
| ccb->base_addr = adapter->fpinfo.base_addr; |
| } |
| ccb->next = adapter->free_ccbs; |
| ccb->next_all = adapter->all_ccbs; |
| adapter->free_ccbs = ccb; |
| adapter->all_ccbs = ccb; |
| adapter->alloc_ccbs++; |
| ccb++; |
| offset += sizeof(struct blogic_ccb); |
| } |
| } |
| |
| |
| /* |
| blogic_create_initccbs allocates the initial CCBs for Host Adapter. |
| */ |
| |
| static bool __init blogic_create_initccbs(struct blogic_adapter *adapter) |
| { |
| int blk_size = BLOGIC_CCB_GRP_ALLOCSIZE * sizeof(struct blogic_ccb); |
| void *blk_pointer; |
| dma_addr_t blkp; |
| |
| while (adapter->alloc_ccbs < adapter->initccbs) { |
| blk_pointer = dma_alloc_coherent(&adapter->pci_device->dev, |
| blk_size, &blkp, GFP_KERNEL); |
| if (blk_pointer == NULL) { |
| blogic_err("UNABLE TO ALLOCATE CCB GROUP - DETACHING\n", |
| adapter); |
| return false; |
| } |
| blogic_init_ccbs(adapter, blk_pointer, blk_size, blkp); |
| } |
| return true; |
| } |
| |
| |
| /* |
| blogic_destroy_ccbs deallocates the CCBs for Host Adapter. |
| */ |
| |
| static void blogic_destroy_ccbs(struct blogic_adapter *adapter) |
| { |
| struct blogic_ccb *next_ccb = adapter->all_ccbs, *ccb, *lastccb = NULL; |
| adapter->all_ccbs = NULL; |
| adapter->free_ccbs = NULL; |
| while ((ccb = next_ccb) != NULL) { |
| next_ccb = ccb->next_all; |
| if (ccb->allocgrp_head) { |
| if (lastccb) |
| dma_free_coherent(&adapter->pci_device->dev, |
| lastccb->allocgrp_size, lastccb, |
| lastccb->allocgrp_head); |
| lastccb = ccb; |
| } |
| } |
| if (lastccb) |
| dma_free_coherent(&adapter->pci_device->dev, |
| lastccb->allocgrp_size, lastccb, |
| lastccb->allocgrp_head); |
| } |
| |
| |
| /* |
| 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. |
| */ |
| |
| static void 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. |
| */ |
| |
| static struct blogic_ccb *blogic_alloc_ccb(struct blogic_adapter *adapter) |
| { |
| static unsigned long serial; |
| struct blogic_ccb *ccb; |
| ccb = adapter->free_ccbs; |
| if (ccb != NULL) { |
| ccb->serial = ++serial; |
| adapter->free_ccbs = ccb->next; |
| ccb->next = NULL; |
| if (adapter->free_ccbs == NULL) |
| blogic_create_addlccbs(adapter, adapter->inc_ccbs, |
| true); |
| return ccb; |
| } |
| blogic_create_addlccbs(adapter, adapter->inc_ccbs, true); |
| ccb = adapter->free_ccbs; |
| if (ccb == NULL) |
| return NULL; |
| ccb->serial = ++serial; |
| adapter->free_ccbs = ccb->next; |
| ccb->next = NULL; |
| return ccb; |
| } |
| |
| |
| /* |
| 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. |
| */ |
| |
| static void blogic_dealloc_ccb(struct blogic_ccb *ccb, int dma_unmap) |
| { |
| struct blogic_adapter *adapter = ccb->adapter; |
| |
| if (ccb->command != NULL) |
| scsi_dma_unmap(ccb->command); |
| if (dma_unmap) |
| dma_unmap_single(&adapter->pci_device->dev, ccb->sensedata, |
| ccb->sense_datalen, DMA_FROM_DEVICE); |
| |
| ccb->command = NULL; |
| ccb->status = BLOGIC_CCB_FREE; |
| ccb->next = adapter->free_ccbs; |
| adapter->free_ccbs = ccb; |
| } |
| |
| |
| /* |
| 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. |
| */ |
| |
| static int blogic_cmd(struct blogic_adapter *adapter, enum blogic_opcode opcode, |
| void *param, int paramlen, void *reply, int replylen) |
| { |
| unsigned char *param_p = (unsigned char *) param; |
| unsigned char *reply_p = (unsigned char *) reply; |
| union blogic_stat_reg statusreg; |
| union blogic_int_reg intreg; |
| unsigned long 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, |
| ((unsigned char *) 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. |
| */ |
| |
| static void __init blogic_sort_probeinfo(struct blogic_probeinfo |
| *probeinfo_list, int probeinfo_cnt) |
| { |
| int last_exchange = probeinfo_cnt - 1, bound, j; |
| |
| while (last_exchange > 0) { |
| bound = last_exchange; |
| last_exchange = 0; |
| for (j = 0; j < bound; j++) { |
| struct blogic_probeinfo *probeinfo1 = |
| &probeinfo_list[j]; |
| struct blogic_probeinfo *probeinfo2 = |
| &probeinfo_list[j + 1]; |
| if (probeinfo1->bus > probeinfo2->bus || |
| (probeinfo1->bus == probeinfo2->bus && |
| (probeinfo1->dev > probeinfo2->dev))) { |
| struct blogic_probeinfo tmp_probeinfo; |
| |
| memcpy(&tmp_probeinfo, probeinfo1, |
| sizeof(struct blogic_probeinfo)); |
| memcpy(probeinfo1, probeinfo2, |
| sizeof(struct blogic_probeinfo)); |
| memcpy(probeinfo2, &tmp_probeinfo, |
| sizeof(struct blogic_probeinfo)); |
| last_exchange = 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. |
| */ |
| |
| static int __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; |
| unsigned char bus; |
| unsigned char device; |
| unsigned int irq_ch; |
| unsigned long base_addr0; |
| unsigned long base_addr1; |
| unsigned long io_addr; |
| unsigned long pci_addr; |
| |
| if (pci_enable_device(pci_device)) |
| continue; |
| |
| 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); |
| |
| 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++; |
| } else if (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) { |
| unsigned char bus; |
| unsigned char device; |
| unsigned int irq_ch; |
| unsigned long io_addr; |
| |
| if (pci_enable_device(pci_device)) |
| continue; |
| |
| 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 = pci_resource_start(pci_device, 0); |
| |
| if (io_addr == 0 || irq_ch == 0) |
| continue; |
| for (i = 0; i < blogic_probeinfo_count; i++) { |
| struct blogic_probeinfo *probeinfo = |
| &blogic_probeinfo_list[i]; |
| if (probeinfo->io_addr == io_addr && |
| probeinfo->adapter_type == BLOGIC_MULTIMASTER) { |
| probeinfo->adapter_bus_type = BLOGIC_PCI_BUS; |
| probeinfo->pci_addr = 0; |
| probeinfo->bus = bus; |
| probeinfo->dev = device; |
| probeinfo->irq_ch = irq_ch; |
| probeinfo->pci_device = pci_dev_get(pci_device); |
| break; |
| } |
| } |
| } |
| return mmcount; |
| } |
| |
| |
| /* |
| 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. |
| */ |
| |
| static int __init blogic_init_fp_probeinfo(struct blogic_adapter *adapter) |
| { |
| int fpindex = blogic_probeinfo_count, fpcount = 0; |
| struct pci_dev *pci_device = NULL; |
| /* |
| Interrogate PCI Configuration Space for any FlashPoint Host Adapters. |
| */ |
| while ((pci_device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, |
| PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT, |
| pci_device)) != NULL) { |
| unsigned char bus; |
| unsigned char device; |
| unsigned int irq_ch; |
| unsigned long base_addr0; |
| unsigned long base_addr1; |
| unsigned long io_addr; |
| unsigned long pci_addr; |
| |
| if (pci_enable_device(pci_device)) |
| continue; |
| |
| 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. |
| */ |
| |
| static void __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); |
| } else if (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; |
| |
| memcpy(saved_probeinfo, |
| blogic_probeinfo_list, |
| blogic_probeinfo_count * sizeof(struct blogic_probeinfo)); |
| memcpy(&blogic_probeinfo_list[0], |
| &saved_probeinfo[fpcount], |
| mmcount * sizeof(struct blogic_probeinfo)); |
| memcpy(&blogic_probeinfo_list[mmcount], |
| &saved_probeinfo[0], |
| fpcount * sizeof(struct blogic_probeinfo)); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| /* |
| blogic_failure prints a standardized error message, and then returns false. |
| */ |
| |
| static bool blogic_failure(struct blogic_adapter *adapter, char *msg) |
| { |
| blogic_announce_drvr(adapter); |
| if (adapter->adapter_bus_type == BLOGIC_PCI_BUS) { |
| blogic_err("While configuring BusLogic PCI Host Adapter at\n", |
| adapter); |
| blogic_err("Bus %d Device %d I/O Address 0x%lX PCI Address 0x%lX:\n", adapter, adapter->bus, adapter->dev, adapter->io_addr, adapter->pci_addr); |
| } else |
| blogic_err("While configuring BusLogic Host Adapter at I/O Address 0x%lX:\n", adapter, adapter->io_addr); |
| blogic_err("%s FAILED - DETACHING\n", adapter, msg); |
| if (blogic_cmd_failure_reason != NULL) |
| blogic_err("ADDITIONAL FAILURE INFO - %s\n", adapter, |
| blogic_cmd_failure_reason); |
| return false; |
| } |
| |
| |
| /* |
| blogic_probe probes for a BusLogic Host Adapter. |
| */ |
| |
| static bool __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); |
| return false; |
| } |
| 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. |
| */ |
| return true; |
| } |
| /* |
| 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) |
| return false; |
| /* |
| 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) |
| return false; |
| /* |
| Indicate the Host Adapter Probe completed successfully. |
| */ |
| return true; |
| } |
| |
| |
| /* |
| 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. |
| */ |
| |
| static bool 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) |
| return false; |
| /* |
| Indicate the Host Adapter Hard Reset completed successfully. |
| */ |
| return true; |
| } |
| /* |
| 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) |
| return false; |
| /* |
| 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) |
| return false; |
| /* |
| 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) |
| return false; |
| /* |
| 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)); |
| return false; |
| } |
| /* |
| Indicate the Host Adapter Hard Reset completed successfully. |
| */ |
| return true; |
| } |
| |
| |
| /* |
| blogic_checkadapter checks to be sure this really is a BusLogic |
| Host Adapter. |
| */ |
| |
| static bool __init blogic_checkadapter(struct blogic_adapter *adapter) |
| { |
| struct blogic_ext_setup ext_setupinfo; |
| unsigned char req_replylen; |
| bool result = true; |
| /* |
| FlashPoint Host Adapters do not require this protection. |
| */ |
| if (blogic_flashpoint_type(adapter)) |
| return true; |
| /* |
| 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. |
| */ |
| |
| static bool __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; |
| unsigned char model[5]; |
| unsigned char fw_ver_digit3; |
| unsigned char fw_ver_letter; |
| struct blogic_adapter_info adapter_info; |
| struct blogic_fetch_localram fetch_localram; |
| struct blogic_autoscsi autoscsi; |
| union blogic_geo_reg georeg; |
| unsigned char req_replylen; |
| unsigned char *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"); |
| else if (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"); |
| else if (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; |
| else if (config.irq_ch10) |
| adapter->irq_ch = 10; |
| else if (config.irq_ch11) |
| adapter->irq_ch = 11; |
| else if (config.irq_ch12) |
| adapter->irq_ch = 12; |
| else if (config.irq_ch14) |
| adapter->irq_ch = 14; |
| else if (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; |
| else if (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++) { |
| unsigned char 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. |
| */ |
| return true; |
| } |
| |
| |
| /* |
| blogic_reportconfig reports the configuration of Host Adapter. |
| */ |
| |
| static bool __init blogic_reportconfig(struct blogic_adapter *adapter) |
| { |
| unsigned short alltgt_mask = (1 << adapter->maxdev) - 1; |
| unsigned short sync_ok, fast_ok; |
| unsigned short ultra_ok, wide_ok; |
| unsigned short discon_ok, tagq_ok; |
| bool common_syncneg, common_tagq_depth; |
| char syncstr[BLOGIC_MAXDEV + 1]; |
| char widestr[BLOGIC_MAXDEV + 1]; |
| char discon_str[BLOGIC_MAXDEV + 1]; |
| char tagq_str[BLOGIC_MAXDEV + 1]; |
| char *syncmsg = syncstr; |
| char *widemsg = widestr; |
| char *discon_msg = discon_str; |
| char *tagq_msg = tagq_str; |
| int tgt_id; |
| |
| blogic_info("Configuring BusLogic Model %s %s%s%s%s SCSI Host Adapter\n", adapter, adapter->model, blogic_adapter_busnames[adapter->adapter_bus_type], (adapter->wide ? " Wide" : ""), (adapter->differential ? " Differential" : ""), (adapter->ultra ? " Ultra" : "")); |
| blogic_info(" Firmware Version: %s, I/O Address: 0x%lX, IRQ Channel: %d/%s\n", adapter, adapter->fw_ver, adapter->io_addr, adapter->irq_ch, (adapter->level_int ? "Level" : "Edge")); |
| if (adapter->adapter_bus_type != BLOGIC_PCI_BUS) { |
| blogic_info(" DMA Channel: None, ", adapter); |
| if (adapter->bios_addr > 0) |
| blogic_info("BIOS Address: 0x%X, ", adapter, |
| adapter->bios_addr); |
| else |
| blogic_info("BIOS Address: None, ", adapter); |
| } else { |
| blogic_info(" PCI Bus: %d, Device: %d, Address: ", adapter, |
| adapter->bus, adapter->dev); |
| if (adapter->pci_addr > 0) |
| blogic_info("0x%lX, ", adapter, adapter->pci_addr); |
| else |
| blogic_info("Unassigned, ", adapter); |
| } |
| blogic_info("Host Adapter SCSI ID: %d\n", adapter, adapter->scsi_id); |
| blogic_info(" Parity Checking: %s, Extended Translation: %s\n", |
| adapter, (adapter->parity ? "Enabled" : "Disabled"), |
| (adapter->ext_trans_enable ? "Enabled" : "Disabled")); |
| alltgt_mask &= ~(1 << adapter->scsi_id); |
| sync_ok = adapter->sync_ok & alltgt_mask; |
| fast_ok = adapter->fast_ok & alltgt_mask; |
| ultra_ok = adapter->ultra_ok & alltgt_mask; |
| if ((blogic_multimaster_type(adapter) && |
| (adapter->fw_ver[0] >= '4' || |
| adapter->adapter_bus_type == BLOGIC_EISA_BUS)) || |
| blogic_flashpoint_type(adapter)) { |
| common_syncneg = false; |
| if (sync_ok == 0) { |
| syncmsg = "Disabled"; |
| common_syncneg = true; |
| } else if (sync_ok == alltgt_mask) { |
| if (fast_ok == 0) { |
| syncmsg = "Slow"; |
| common_syncneg = true; |
| } else if (fast_ok == alltgt_mask) { |
| if (ultra_ok == 0) { |
| syncmsg = "Fast"; |
| common_syncneg = true; |
| } else if (ultra_ok == alltgt_mask) { |
| syncmsg = "Ultra"; |
| common_syncneg = true; |
| } |
| } |
| } |
| if (!common_syncneg) { |
| for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) |
| syncstr[tgt_id] = ((!(sync_ok & (1 << tgt_id))) ? 'N' : (!(fast_ok & (1 << tgt_id)) ? 'S' : (!(ultra_ok & (1 << tgt_id)) ? 'F' : 'U'))); |
| syncstr[adapter->scsi_id] = '#'; |
| syncstr[adapter->maxdev] = '\0'; |
| } |
| } else |
| syncmsg = (sync_ok == 0 ? "Disabled" : "Enabled"); |
| wide_ok = adapter->wide_ok & alltgt_mask; |
| if (wide_ok == 0) |
| widemsg = "Disabled"; |
| else if (wide_ok == alltgt_mask) |
| widemsg = "Enabled"; |
| else { |
| for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) |
| widestr[tgt_id] = ((wide_ok & (1 << tgt_id)) ? 'Y' : 'N'); |
| widestr[adapter->scsi_id] = '#'; |
| widestr[adapter->maxdev] = '\0'; |
| } |
| discon_ok = adapter->discon_ok & alltgt_mask; |
| if (discon_ok == 0) |
| discon_msg = "Disabled"; |
| else if (discon_ok == alltgt_mask) |
| discon_msg = "Enabled"; |
| else { |
| for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) |
| discon_str[tgt_id] = ((discon_ok & (1 << tgt_id)) ? 'Y' : 'N'); |
| discon_str[adapter->scsi_id] = '#'; |
| discon_str[adapter->maxdev] = '\0'; |
| } |
| tagq_ok = adapter->tagq_ok & alltgt_mask; |
| if (tagq_ok == 0) |
| tagq_msg = "Disabled"; |
| else if (tagq_ok == alltgt_mask) |
| tagq_msg = "Enabled"; |
| else { |
| for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) |
| tagq_str[tgt_id] = ((tagq_ok & (1 << tgt_id)) ? 'Y' : 'N'); |
| tagq_str[adapter->scsi_id] = '#'; |
| tagq_str[adapter->maxdev] = '\0'; |
| } |
| blogic_info(" Synchronous Negotiation: %s, Wide Negotiation: %s\n", |
| adapter, syncmsg, widemsg); |
| blogic_info(" Disconnect/Reconnect: %s, Tagged Queuing: %s\n", adapter, |
| discon_msg, tagq_msg); |
| if (blogic_multimaster_type(adapter)) { |
| blogic_info(" Scatter/Gather Limit: %d of %d segments, Mailboxes: %d\n", adapter, adapter->drvr_sglimit, adapter->adapter_sglimit, adapter->mbox_count); |
| blogic_info(" Driver Queue Depth: %d, Host Adapter Queue Depth: %d\n", adapter, adapter->drvr_qdepth, adapter->adapter_qdepth); |
| } else |
| blogic_info(" Driver Queue Depth: %d, Scatter/Gather Limit: %d segments\n", adapter, adapter->drvr_qdepth, adapter->drvr_sglimit); |
| blogic_info(" Tagged Queue Depth: ", adapter); |
| common_tagq_depth = true; |
| for (tgt_id = 1; tgt_id < adapter->maxdev; tgt_id++) |
| if (adapter->qdepth[tgt_id] != adapter->qdepth[0]) { |
| common_tagq_depth = false; |
| break; |
| } |
| if (common_tagq_depth) { |
| if (adapter->qdepth[0] > 0) |
| blogic_info("%d", adapter, adapter->qdepth[0]); |
| else |
| blogic_info("Automatic", adapter); |
| } else |
| blogic_info("Individual", adapter); |
| blogic_info(", Untagged Queue Depth: %d\n", adapter, |
| adapter->untag_qdepth); |
| if (adapter->terminfo_valid) { |
| if (adapter->wide) |
| blogic_info(" SCSI Bus Termination: %s", adapter, |
| (adapter->low_term ? (adapter->high_term ? "Both Enabled" : "Low Enabled") : (adapter->high_term ? "High Enabled" : "Both Disabled"))); |
| else |
| blogic_info(" SCSI Bus Termination: %s", adapter, |
| (adapter->low_term ? "Enabled" : "Disabled")); |
| if (adapter->scam) |
| blogic_info(", SCAM: %s", adapter, |
| (adapter->scam_enabled ? (adapter->scam_lev2 ? "Enabled, Level 2" : "Enabled, Level 1") : "Disabled")); |
| blogic_info("\n", adapter); |
| } |
| /* |
| Indicate reporting the Host Adapter configuration completed |
| successfully. |
| */ |
| return true; |
| } |
| |
| |
| /* |
| blogic_getres acquires the system resources necessary to use |
| Host Adapter. |
| */ |
| |
| static bool __init blogic_getres(struct blogic_adapter *adapter) |
| { |
| if (adapter->irq_ch == 0) { |
| blogic_err("NO LEGAL INTERRUPT CHANNEL ASSIGNED - DETACHING\n", |
| adapter); |
| return false; |
| } |
| /* |
| 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); |
| return false; |
| } |
| adapter->irq_acquired = true; |
| /* |
| Indicate the System Resource Acquisition completed successfully, |
| */ |
| return true; |
| } |
| |
| |
| /* |
| blogic_relres releases any system resources previously acquired |
| by blogic_getres. |
| */ |
| |
| static void 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. |
| */ |
| |
| static bool blogic_initadapter(struct blogic_adapter *adapter) |
| { |
| struct blogic_extmbox_req extmbox_req; |
| enum blogic_rr_req rr_req; |
| enum blogic_setccb_fmt setccb_fmt; |
| int tgt_id; |
| |
| /* |
| Initialize the pointers to the first and last CCBs that are |
| queued for completion processing. |
| */ |
| adapter->firstccb = NULL; |
| adapter->lastccb = NULL; |
| |
| /* |
| Initialize the Bus Device Reset Pending CCB, Tagged Queuing Active, |
| Command Successful Flag, Active Commands, and Commands Since Reset |
| for each Target Device. |
| */ |
| for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) { |
| adapter->bdr_pend[tgt_id] = NULL; |
| adapter->tgt_flags[tgt_id].tagq_active = false; |
| adapter->tgt_flags[tgt_id].cmd_good = false; |
| adapter->active_cmds[tgt_id] = 0; |
| adapter->cmds_since_rst[tgt_id] = 0; |
| } |
| |
| /* |
| FlashPoint Host Adapters do not use Outgoing and Incoming Mailboxes. |
| */ |
| if (blogic_flashpoint_type(adapter)) |
| goto done; |
| |
| /* |
| Initialize the Outgoing and Incoming Mailbox pointers. |
| */ |
| adapter->mbox_sz = adapter->mbox_count * (sizeof(struct blogic_outbox) + sizeof(struct blogic_inbox)); |
| adapter->mbox_space = dma_alloc_coherent(&adapter->pci_device->dev, |
| adapter->mbox_sz, &adapter->mbox_space_handle, |
| GFP_KERNEL); |
| if (adapter->mbox_space == NULL) |
| return blogic_failure(adapter, "MAILBOX ALLOCATION"); |
| adapter->first_outbox = (struct blogic_outbox *) adapter->mbox_space; |
| adapter->last_outbox = adapter->first_outbox + adapter->mbox_count - 1; |
| adapter->next_outbox = adapter->first_outbox; |
| adapter->first_inbox = (struct blogic_inbox *) (adapter->last_outbox + 1); |
| adapter->last_inbox = adapter->first_inbox + adapter->mbox_count - 1; |
| adapter->next_inbox = adapter->first_inbox; |
| |
| /* |
| Initialize the Outgoing and Incoming Mailbox structures. |
| */ |
| memset(adapter->first_outbox, 0, |
| adapter->mbox_count * sizeof(struct blogic_outbox)); |
| memset(adapter->first_inbox, 0, |
| adapter->mbox_count * sizeof(struct blogic_inbox)); |
| |
| /* |
| 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"); |
| } |
| |
| /* |
| Announce Successful Initialization. |
| */ |
| done: |
| if (!adapter->adapter_initd) { |
| blogic_info("*** %s Initialized Successfully ***\n", adapter, |
| adapter->full_model); |
| blogic_info("\n", adapter); |
| } else |
| blogic_warn("*** %s Initialized Successfully ***\n", adapter, |
| adapter->full_model); |
| adapter->adapter_initd = true; |
| |
| /* |
| Indicate the Host Adapter Initialization completed successfully. |
| */ |
| return true; |
| } |
| |
| |
| /* |
| blogic_inquiry inquires about the Target Devices accessible |
| through Host Adapter. |
| */ |
| |
| static bool __init blogic_inquiry(struct blogic_adapter *adapter) |
| { |
| u16 installed_devs; |
| u8 installed_devs0to7[8]; |
| struct blogic_setup_info setupinfo; |
| u8 sync_period[BLOGIC_MAXDEV]; |
| unsigned char req_replylen; |
| int tgt_id; |
| |
| /* |
| 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)) |
| return true; |
| /* |
| Inhibit the Target Device Inquiry if requested. |
| */ |
| if (adapter->drvr_opts != NULL && adapter->drvr_opts->stop_tgt_inquiry) |
| return true; |
| /* |
| 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. |
| */ |
| |
| if (blogic_cmd(adapter, BLOGIC_INQ_DEV, NULL, 0, |
| &installed_devs, sizeof(installed_devs)) |
| != sizeof(installed_devs)) |
| return blogic_failure(adapter, "INQUIRE TARGET DEVICES"); |
| for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) |
| adapter->tgt_flags[tgt_id].tgt_exists = |
| (installed_devs & (1 << tgt_id) ? true : false); |
| } else { |
| |
| /* |
| 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. |
| */ |
| |
| req_replylen = sizeof(sync_period); |
| if (blogic_cmd(adapter, BLOGIC_INQ_SYNC_PERIOD, &req_replylen, |
| sizeof(req_replylen), &sync_period, |
| sizeof(sync_period)) != sizeof(sync_period)) |
| return blogic_failure(adapter, |
| "INQUIRE SYNCHRONOUS PERIOD"); |
| for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) |
| adapter->sync_period[tgt_id] = sync_period[tgt_id]; |
| } else |
| for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) |
| if (setupinfo.sync0to7[tgt_id].offset > 0) |
| adapter->sync_period[tgt_id] = 20 + 5 * setupinfo.sync0to7[tgt_id].tx_period; |
| /* |
| Indicate the Target Device Inquiry completed successfully. |
| */ |
| return true; |
| } |
| |
| /* |
| 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. |
| */ |
| |
| static void __init blogic_inithoststruct(struct blogic_adapter *adapter, |
| struct Scsi_Host *host) |
| { |
| host->max_id = adapter->maxdev; |
| host->max_lun = adapter->maxlun; |
| host->max_channel = 0; |
| host->unique_id = adapter->io_addr; |
| host->this_id = adapter->scsi_id; |
| host->can_queue = adapter->drvr_qdepth; |
| host->sg_tablesize = adapter->drvr_sglimit; |
| host->cmd_per_lun = adapter->untag_qdepth; |
| } |
| |
| /* |
| blogic_slaveconfig 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. |
| */ |
| static int blogic_slaveconfig(struct scsi_device *dev) |
| { |
| struct blogic_adapter *adapter = |
| (struct blogic_adapter *) dev->host->hostdata; |
| int tgt_id = dev->id; |
| int qdepth = adapter->qdepth[tgt_id]; |
| |
| if (adapter->tgt_flags[tgt_id].tagq_ok && |
| (adapter->tagq_ok & (1 << tgt_id))) { |
| if (qdepth == 0) |
| qdepth = BLOGIC_MAX_AUTO_TAG_DEPTH; |
| adapter->qdepth[tgt_id] = qdepth; |
| scsi_change_queue_depth(dev, qdepth); |
| } else { |
| adapter->tagq_ok &= ~(1 << tgt_id); |
| qdepth = adapter->untag_qdepth; |
| adapter->qdepth[tgt_id] = qdepth; |
| scsi_change_queue_depth(dev, qdepth); |
| } |
| qdepth = 0; |
| for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) |
| if (adapter->tgt_flags[tgt_id].tgt_exists) |
| qdepth += adapter->qdepth[tgt_id]; |
| if (qdepth > adapter->alloc_ccbs) |
| blogic_create_addlccbs(adapter, qdepth - adapter->alloc_ccbs, |
| false); |
| return 0; |
| } |
| |
| /* |
| 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. |
| */ |
| |
| static int __init blogic_init(void) |
| { |
| int adapter_count = 0, 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; |
| } |
| |
| adapter = kzalloc(sizeof(struct blogic_adapter), GFP_KERNEL); |
| if (adapter == NULL) { |
| kfree(blogic_probeinfo_list); |
| blogic_err("BusLogic: Unable to allocate Prototype Host Adapter\n", NULL); |
| return -ENOMEM; |
| } |
| |
| #ifdef MODULE |
| if (BusLogic != NULL) |
| blogic_setup(BusLogic); |
| #endif |
| blogic_init_probeinfo_list(adapter); |
| for (probeindex = 0; probeindex < blogic_probeinfo_count; probeindex++) { |
| struct blogic_probeinfo *probeinfo = |
| &blogic_probeinfo_list[probeindex]; |
| struct blogic_adapter *myadapter = adapter; |
| struct Scsi_Host *host; |
| |
| if (probeinfo->io_addr == 0) |
| continue; |
| memset(myadapter, 0, sizeof(struct blogic_adapter)); |
| myadapter->adapter_type = probeinfo->adapter_type; |
| myadapter->adapter_bus_type = probeinfo->adapter_bus_type; |
| myadapter->io_addr = probeinfo->io_addr; |
| myadapter->pci_addr = probeinfo->pci_addr; |
| myadapter->bus = probeinfo->bus; |
| myadapter->dev = probeinfo->dev; |
| myadapter->pci_device = probeinfo->pci_device; |
| myadapter->irq_ch = probeinfo->irq_ch; |
| myadapter->addr_count = |
| blogic_adapter_addr_count[myadapter->adapter_type]; |
| |
| /* |
| 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", |
| (unsigned long)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); |
| adapter_count++; |
| } |
| } |
| } 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. |
| */ |
| |
| static int __exit blogic_deladapter(struct blogic_adapter *adapter) |
| { |
| struct Scsi_Host *host = adapter->scsi_host; |
| |
| scsi_remove_host(host); |
| |
| /* |
| 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. |
| */ |
| |
| static void blogic_qcompleted_ccb(struct blogic_ccb *ccb) |
| { |
| struct blogic_adapter *adapter = ccb->adapter; |
| |
| ccb->status = BLOGIC_CCB_COMPLETE; |
| ccb->next = NULL; |
| if (adapter->firstccb == NULL) { |
| adapter->firstccb = ccb; |
| adapter->lastccb = ccb; |
| } else { |
| adapter->lastccb->next = ccb; |
| adapter->lastccb = ccb; |
| } |
| adapter->active_cmds[ccb->tgt_id]--; |
| } |
| |
| |
| /* |
| blogic_resultcode computes a SCSI Subsystem Result Code from |
| the Host Adapter Status and Target Device Status. |
| */ |
| |
| static int blogic_resultcode(struct blogic_adapter *adapter, |
| enum blogic_adapter_status adapter_status, |
| enum blogic_tgt_status tgt_status) |
| { |
| int hoststatus; |
| |
| 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; |
| } |
| |
| |
| /* |
| blogic_scan_inbox scans the Incoming Mailboxes saving any |
| Incoming Mailbox entries for completion processing. |
| */ |
| |
| static void 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) { |
| /* |
| We are only allowed to do this because we limit our |
| architectures we run on to machines where bus_to_virt( |
| actually works. There *needs* to be a dma_addr_to_virt() |
| in the new PCI DMA mapping interface to replace |
| bus_to_virt() or else this code is going to become very |
| innefficient. |
| */ |
| struct blogic_ccb *ccb = |
| (struct blogic_ccb *) bus_to_virt(next_inbox->ccb); |
| if (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. |
| */ |
| |
| static void 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; |
| unsigned long 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; |
| else if (intreg.ir.mailin_loaded) |
| blogic_scan_inbox(adapter); |
| else if (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; |
| } else if (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. |
| */ |
| |
| static bool blogic_write_outbox(struct blogic_adapter *adapter, |
| enum blogic_action action, struct blogic_ccb *ccb) |
| { |
| struct blogic_outbox *next_outbox; |
| |
| 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++; |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| /* Error Handling (EH) support */ |
| |
| static int blogic_hostreset(struct scsi_cmnd *SCpnt) |
| { |
| struct blogic_adapter *adapter = |
| (struct blogic_adapter *) SCpnt->device->host->hostdata; |
| |
| unsigned int id = SCpnt->device->id; |
| struct blogic_tgt_stats *stats = &adapter->tgt_stats[id]; |
| int rc; |
| |
| spin_lock_irq(SCpnt->device->host->host_lock); |
| |
| blogic_inc_count(&stats->adapter_reset_req); |
| |
| rc = blogic_resetadapter(adapter, false); |
| spin_unlock_irq(SCpnt->device->host->host_lock); |
| return rc; |
| } |
| |
| /* |
| blogic_qcmd creates a CCB for Command and places it into an |
| Outgoing Mailbox for execution by the associated Host Adapter. |
| */ |
| |
| static int blogic_qcmd_lck(struct scsi_cmnd *command) |
| { |
| void (*comp_cb)(struct scsi_cmnd *) = scsi_done; |
| struct blogic_adapter *adapter = |
| (struct blogic_adapter *) command->device->host->hostdata; |
| struct blogic_tgt_flags *tgt_flags = |
| &adapter->tgt_flags[command->device->id]; |
| struct blogic_tgt_stats *tgt_stats = adapter->tgt_stats; |
| unsigned char *cdb = command->cmnd; |
| int cdblen = command->cmd_len; |
| int tgt_id = command->device->id; |
| int lun = command->device->lun; |
| int buflen = scsi_bufflen(command); |
| int count; |
| struct blogic_ccb *ccb; |
| dma_addr_t sense_buf; |
| |
| /* |
| 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; |
| |
| ccb->opcode = BLOGIC_INITIATOR_CCB_SG; |
| ccb->datalen = count * sizeof(struct blogic_sg_seg); |
| if (blogic_multimaster_type(adapter)) |
| ccb->data = (unsigned int) ccb->dma_handle + |
| ((unsigned long) &ccb->sglist - |
| (unsigned long) ccb); |
| else |
| ccb->data = virt_to_32bit_virt(ccb->sglist); |
| |
| scsi_for_each_sg(command, sg, count, i) { |
| ccb->sglist[i].segbytes = sg_dma_len(sg); |
| ccb->sglist[i].segdata = sg_dma_address(sg); |
| } |
| } else if (!count) { |
| ccb->opcode = BLOGIC_INITIATOR_CCB; |
| ccb->datalen = buflen; |
| ccb->data = 0; |
| } |
| |
| 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; |
| else if (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); |
|