mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

Buslogic: remove ISA support 

The ISA support in Buslogic has been broken for a long time, as all
the I/O path expects a struct device for DMA mapping that is derived from
the PCI device, which would simply crash for ISA adapters.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: Khalid Aziz <khalid@gonehiking.org>
Link: https://lore.kernel.org/r/20210331073001.46776-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-03-31 09:29:55 +02:00 committed by Jens Axboe
parent 2f2fef022c
commit 8cad3b66bf
4 changed files with 7 additions and 215 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
Documentation/scsi/BusLogic.rst
View File

@ -251,8 +251,6 @@ BT-445C VLB Fast SCSI-2
BT-747C EISA Fast SCSI-2
BT-757C EISA Wide Fast SCSI-2
BT-757CD EISA Wide Differential Fast SCSI-2
BT-545C ISA Fast SCSI-2
BT-540CF ISA Fast SCSI-2
======== ==== ==============================
MultiMaster "S" Series Host Adapters:
@ -263,17 +261,13 @@ BT-747S EISA Fast SCSI-2
BT-747D EISA Differential Fast SCSI-2
BT-757S EISA Wide Fast SCSI-2
BT-757D EISA Wide Differential Fast SCSI-2
BT-545S ISA Fast SCSI-2
BT-542D ISA Differential Fast SCSI-2
BT-742A EISA SCSI-2 (742A revision H)
BT-542B ISA SCSI-2 (542B revision H)
======= ==== ==============================
MultiMaster "A" Series Host Adapters:
======= ==== ==============================
BT-742A EISA SCSI-2 (742A revisions A - G)
BT-542B ISA SCSI-2 (542B revisions A - G)
======= ==== ==============================
AMI FastDisk Host Adapters that are true BusLogic MultiMaster clones are also
@ -400,26 +394,11 @@ selected host adapter.
The BusLogic Driver Probing Options comprise the following:
IO:<integer>
The "IO:" option specifies an ISA I/O Address to be probed for a non-PCI
MultiMaster Host Adapter. If neither "IO:" nor "NoProbeISA" options are
specified, then the standard list of BusLogic MultiMaster ISA I/O Addresses
will be probed (0x330, 0x334, 0x230, 0x234, 0x130, and 0x134). Multiple
"IO:" options may be specified to precisely determine the I/O Addresses to
be probed, but the probe order will always follow the standard list.
NoProbe
The "NoProbe" option disables all probing and therefore no BusLogic Host
Adapters will be detected.
NoProbeISA
The "NoProbeISA" option disables probing of the standard BusLogic ISA I/O
Addresses and therefore only PCI MultiMaster and FlashPoint Host Adapters
will be detected.
NoProbePCI
The "NoProbePCI" options disables the interrogation of PCI Configuration
@ -464,10 +443,7 @@ QueueDepth:<integer>
Depth for devices that do not support Tagged Queuing. If no Queue Depth
option is provided, the Queue Depth will be determined automatically based
on the Host Adapter's Total Queue Depth and the number, type, speed, and
capabilities of the detected Target Devices. For Host Adapters that
require ISA Bounce Buffers, the Queue Depth is automatically set by default
to BusLogic_TaggedQueueDepthBB or BusLogic_UntaggedQueueDepthBB to avoid
excessive preallocation of DMA Bounce Buffer memory. Target Devices that
capabilities of the detected Target Devices. Target Devices that
do not support Tagged Queuing always have their Queue Depth set to
BusLogic_UntaggedQueueDepth or BusLogic_UntaggedQueueDepthBB, unless a
lower Queue Depth option is provided. A Queue Depth of 1 automatically

184
drivers/scsi/BusLogic.c
View File

@ -561,60 +561,6 @@ done:
}
/*
blogic_add_probeaddr_isa appends a single ISA I/O Address to the list
of I/O Address and Bus Probe Information to be checked for potential BusLogic
Host Adapters.
*/
static void __init blogic_add_probeaddr_isa(unsigned long io_addr)
{
struct blogic_probeinfo *probeinfo;
if (blogic_probeinfo_count >= BLOGIC_MAX_ADAPTERS)
return;
probeinfo = &blogic_probeinfo_list[blogic_probeinfo_count++];
probeinfo->adapter_type = BLOGIC_MULTIMASTER;
probeinfo->adapter_bus_type = BLOGIC_ISA_BUS;
probeinfo->io_addr = io_addr;
probeinfo->pci_device = NULL;
}
/*
blogic_init_probeinfo_isa initializes the list of I/O Address and
Bus Probe Information to be checked for potential BusLogic SCSI Host Adapters
only from the list of standard BusLogic MultiMaster ISA I/O Addresses.
*/
static void __init blogic_init_probeinfo_isa(struct blogic_adapter *adapter)
{
/*
If BusLogic Driver Options specifications requested that ISA
Bus Probes be inhibited, do not proceed further.
*/
if (blogic_probe_options.noprobe_isa)
return;
/*
Append the list of standard BusLogic MultiMaster ISA I/O Addresses.
*/
if (!blogic_probe_options.limited_isa || blogic_probe_options.probe330)
blogic_add_probeaddr_isa(0x330);
if (!blogic_probe_options.limited_isa || blogic_probe_options.probe334)
blogic_add_probeaddr_isa(0x334);
if (!blogic_probe_options.limited_isa || blogic_probe_options.probe230)
blogic_add_probeaddr_isa(0x230);
if (!blogic_probe_options.limited_isa || blogic_probe_options.probe234)
blogic_add_probeaddr_isa(0x234);
if (!blogic_probe_options.limited_isa || blogic_probe_options.probe130)
blogic_add_probeaddr_isa(0x130);
if (!blogic_probe_options.limited_isa || blogic_probe_options.probe134)
blogic_add_probeaddr_isa(0x134);
}
#ifdef CONFIG_PCI
/*
blogic_sort_probeinfo sorts a section of blogic_probeinfo_list in order
of increasing PCI Bus and Device Number.
@ -667,14 +613,11 @@ static int __init blogic_init_mm_probeinfo(struct blogic_adapter *adapter)
int nonpr_mmcount = 0, mmcount = 0;
bool force_scan_order = false;
bool force_scan_order_checked = false;
bool addr_seen[6];
struct pci_dev *pci_device = NULL;
int i;
if (blogic_probeinfo_count >= BLOGIC_MAX_ADAPTERS)
return 0;
blogic_probeinfo_count++;
for (i = 0; i < 6; i++)
addr_seen[i] = false;
/*
Iterate over the MultiMaster PCI Host Adapters. For each
enumerated host adapter, determine whether its ISA Compatible
@ -744,11 +687,8 @@ static int __init blogic_init_mm_probeinfo(struct blogic_adapter *adapter)
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)) {
if (adapter_info.isa_port < 6)
addr_seen[adapter_info.isa_port] = true;
} else
&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
@ -835,45 +775,6 @@ static int __init blogic_init_mm_probeinfo(struct blogic_adapter *adapter)
if (force_scan_order)
blogic_sort_probeinfo(&blogic_probeinfo_list[nonpr_mmindex],
nonpr_mmcount);
/*
If no PCI MultiMaster Host Adapter is assigned the Primary
I/O Address, then the Primary I/O Address must be probed
explicitly before any PCI host adapters are probed.
*/
if (!blogic_probe_options.noprobe_isa)
if (pr_probeinfo->io_addr == 0 &&
(!blogic_probe_options.limited_isa ||
blogic_probe_options.probe330)) {
pr_probeinfo->adapter_type = BLOGIC_MULTIMASTER;
pr_probeinfo->adapter_bus_type = BLOGIC_ISA_BUS;
pr_probeinfo->io_addr = 0x330;
}
/*
Append the list of standard BusLogic MultiMaster ISA I/O Addresses,
omitting the Primary I/O Address which has already been handled.
*/
if (!blogic_probe_options.noprobe_isa) {
if (!addr_seen[1] &&
(!blogic_probe_options.limited_isa ||
blogic_probe_options.probe334))
blogic_add_probeaddr_isa(0x334);
if (!addr_seen[2] &&
(!blogic_probe_options.limited_isa ||
blogic_probe_options.probe230))
blogic_add_probeaddr_isa(0x230);
if (!addr_seen[3] &&
(!blogic_probe_options.limited_isa ||
blogic_probe_options.probe234))
blogic_add_probeaddr_isa(0x234);
if (!addr_seen[4] &&
(!blogic_probe_options.limited_isa ||
blogic_probe_options.probe130))
blogic_add_probeaddr_isa(0x130);
if (!addr_seen[5] &&
(!blogic_probe_options.limited_isa ||
blogic_probe_options.probe134))
blogic_add_probeaddr_isa(0x134);
}
/*
Iterate over the older non-compliant MultiMaster PCI Host Adapters,
noting the PCI bus location and assigned IRQ Channel.
@ -1078,18 +979,10 @@ static void __init blogic_init_probeinfo_list(struct blogic_adapter *adapter)
}
}
}
} else {
blogic_init_probeinfo_isa(adapter);
}
}
#else
#define blogic_init_probeinfo_list(adapter) \
blogic_init_probeinfo_isa(adapter)
#endif /* CONFIG_PCI */
/*
blogic_failure prints a standardized error message, and then returns false.
*/
@ -1539,14 +1432,6 @@ static bool __init blogic_rdconfig(struct blogic_adapter *adapter)
else if (config.irq_ch15)
adapter->irq_ch = 15;
}
if (adapter->adapter_bus_type == BLOGIC_ISA_BUS) {
if (config.dma_ch5)
adapter->dma_ch = 5;
else if (config.dma_ch6)
adapter->dma_ch = 6;
else if (config.dma_ch7)
adapter->dma_ch = 7;
}
/*
Determine whether Extended Translation is enabled and save it in
the Host Adapter structure.
@ -1686,8 +1571,7 @@ static bool __init blogic_rdconfig(struct blogic_adapter *adapter)
if (adapter->fw_ver[0] == '5')
adapter->adapter_qdepth = 192;
else if (adapter->fw_ver[0] == '4')
adapter->adapter_qdepth = (adapter->adapter_bus_type !=
BLOGIC_ISA_BUS ? 100 : 50);
adapter->adapter_qdepth = 100;
else
adapter->adapter_qdepth = 30;
if (strcmp(adapter->fw_ver, "3.31") >= 0) {
@ -1727,13 +1611,6 @@ static bool __init blogic_rdconfig(struct blogic_adapter *adapter)
bios_addr is 0.
*/
adapter->bios_addr = ext_setupinfo.bios_addr << 12;
/*
ISA Host Adapters require Bounce Buffers if there is more than
16MB memory.
*/
if (adapter->adapter_bus_type == BLOGIC_ISA_BUS &&
(void *) high_memory > (void *) MAX_DMA_ADDRESS)
adapter->need_bouncebuf = true;
/*
BusLogic BT-445S Host Adapters prior to board revision E have a
hardware bug whereby when the BIOS is enabled, transfers to/from
@ -1839,11 +1716,7 @@ static bool __init blogic_reportconfig(struct blogic_adapter *adapter)
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: ", adapter);
if (adapter->dma_ch > 0)
blogic_info("%d, ", adapter, adapter->dma_ch);
else
blogic_info("None, ", adapter);
blogic_info(" DMA Channel: None, ", adapter);
if (adapter->bios_addr > 0)
blogic_info("BIOS Address: 0x%lX, ", adapter,
adapter->bios_addr);
@ -1995,18 +1868,6 @@ static bool __init blogic_getres(struct blogic_adapter *adapter)
return false;
}
adapter->irq_acquired = true;
/*
Acquire exclusive access to the DMA Channel.
*/
if (adapter->dma_ch > 0) {
if (request_dma(adapter->dma_ch, adapter->full_model) < 0) {
blogic_err("UNABLE TO ACQUIRE DMA CHANNEL %d - DETACHING\n", adapter, adapter->dma_ch);
return false;
}
set_dma_mode(adapter->dma_ch, DMA_MODE_CASCADE);
enable_dma(adapter->dma_ch);
adapter->dma_chan_acquired = true;
}
/*
Indicate the System Resource Acquisition completed successfully,
*/
@ -2026,11 +1887,6 @@ static void blogic_relres(struct blogic_adapter *adapter)
*/
if (adapter->irq_acquired)
free_irq(adapter->irq_ch, adapter);
/*
Release exclusive access to the DMA Channel.
*/
if (adapter->dma_chan_acquired)
free_dma(adapter->dma_ch);
/*
Release any allocated memory structs not released elsewhere
*/
@ -3666,37 +3522,7 @@ static int __init blogic_parseopts(char *options)
memset(drvr_opts, 0, sizeof(struct blogic_drvr_options));
while (*options != '\0' && *options != ';') {
/* Probing Options. */
if (blogic_parse(&options, "IO:")) {
unsigned long io_addr = simple_strtoul(options,
&options, 0);
blogic_probe_options.limited_isa = true;
switch (io_addr) {
case 0x330:
blogic_probe_options.probe330 = true;
break;
case 0x334:
blogic_probe_options.probe334 = true;
break;
case 0x230:
blogic_probe_options.probe230 = true;
break;
case 0x234:
blogic_probe_options.probe234 = true;
break;
case 0x130:
blogic_probe_options.probe130 = true;
break;
case 0x134:
blogic_probe_options.probe134 = true;
break;
default:
blogic_err("BusLogic: Invalid Driver Options (invalid I/O Address 0x%lX)\n", NULL, io_addr);
return 0;
}
} else if (blogic_parse(&options, "NoProbeISA"))
blogic_probe_options.noprobe_isa = true;
else if (blogic_parse(&options, "NoProbePCI"))
if (blogic_parse(&options, "NoProbePCI"))
blogic_probe_options.noprobe_pci = true;
else if (blogic_parse(&options, "NoProbe"))
blogic_probe_options.noprobe = true;

10
drivers/scsi/BusLogic.h
View File

@ -237,18 +237,10 @@ struct blogic_probeinfo {
struct blogic_probe_options {
bool noprobe:1; /* Bit 0 */
bool noprobe_isa:1; /* Bit 1 */
bool noprobe_pci:1; /* Bit 2 */
bool nosort_pci:1; /* Bit 3 */
bool multimaster_first:1; /* Bit 4 */
bool flashpoint_first:1; /* Bit 5 */
bool limited_isa:1; /* Bit 6 */
bool probe330:1; /* Bit 7 */
bool probe334:1; /* Bit 8 */
bool probe230:1; /* Bit 9 */
bool probe234:1; /* Bit 10 */
bool probe130:1; /* Bit 11 */
bool probe134:1; /* Bit 12 */
};
/*
@ -997,10 +989,8 @@ struct blogic_adapter {
unsigned char bus;
unsigned char dev;
unsigned char irq_ch;
unsigned char dma_ch;
unsigned char scsi_id;
bool irq_acquired:1;
bool dma_chan_acquired:1;
bool ext_trans_enable:1;
bool parity:1;
bool reset_enabled:1;

2
drivers/scsi/Kconfig
View File

@ -497,7 +497,7 @@ config SCSI_HPTIOP
config SCSI_BUSLOGIC
tristate "BusLogic SCSI support"
depends on (PCI || ISA) && SCSI && ISA_DMA_API && VIRT_TO_BUS
depends on PCI && SCSI && VIRT_TO_BUS
help
This is support for BusLogic MultiMaster and FlashPoint SCSI Host
Adapters. Consult the SCSI-HOWTO, available from