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BusLogic.c
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BusLogic.c
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// 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)