| Message ID | 20210326055822.1437471-3-hch@lst.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/8] aha1542: use a local bounce buffer | expand |
On 3/26/21 6:58 AM, Christoph Hellwig wrote: > 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> > --- > drivers/scsi/BusLogic.c | 156 ++-------------------------------------- > drivers/scsi/BusLogic.h | 3 - > drivers/scsi/Kconfig | 2 +- > 3 files changed, 6 insertions(+), 155 deletions(-) > Reviewed-by: Hannes Reinecke <hare@suse.de> Cheers, Hannes
On 3/25/21 11:58 PM, Christoph Hellwig wrote: > 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> > --- > drivers/scsi/BusLogic.c | 156 ++-------------------------------------- > drivers/scsi/BusLogic.h | 3 - > drivers/scsi/Kconfig | 2 +- > 3 files changed, 6 insertions(+), 155 deletions(-) > Hi Chris, This looks good. There is more code that can be removed, for instance all of the code that supports "IO:" driver option to specify ISA port addresses. enum blogic_adapter_bus_type can shrink. "limited_isa" and "probe*" members of struct blogic_probe_options can go away. You could add those to this patch, or if you would like, I can create a follow-on patch to remove that code. Thanks, Khalid > diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c > index ccb061ab0a0ad2..c3ed03c4b3f5cb 100644 > --- a/drivers/scsi/BusLogic.c > +++ b/drivers/scsi/BusLogic.c > @@ -561,60 +561,6 @@ static int blogic_cmd(struct blogic_adapter *adapter, enum blogic_opcode opcode, > } > > > -/* > - 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 > */ > @@ -3694,9 +3550,7 @@ static int __init blogic_parseopts(char *options) > 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")) > + } else if (blogic_parse(&options, "NoProbePCI")) > blogic_probe_options.noprobe_pci = true; > else if (blogic_parse(&options, "NoProbe")) > blogic_probe_options.noprobe = true; > diff --git a/drivers/scsi/BusLogic.h b/drivers/scsi/BusLogic.h > index 6182cc8a0344a8..6eaddc009b5c55 100644 > --- a/drivers/scsi/BusLogic.h > +++ b/drivers/scsi/BusLogic.h > @@ -237,7 +237,6 @@ 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 */ > @@ -997,10 +996,8 @@ 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; > diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig > index 06b87c7f6babd3..3d114be5b662df 100644 > --- a/drivers/scsi/Kconfig > +++ b/drivers/scsi/Kconfig > @@ -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 >
On Mon, Mar 29, 2021 at 02:29:21PM -0600, Khalid Aziz wrote: > On 3/25/21 11:58 PM, Christoph Hellwig wrote: > > 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> > > --- > > drivers/scsi/BusLogic.c | 156 ++-------------------------------------- > > drivers/scsi/BusLogic.h | 3 - > > drivers/scsi/Kconfig | 2 +- > > 3 files changed, 6 insertions(+), 155 deletions(-) > > > > Hi Chris, > > This looks good. There is more code that can be removed, for instance > all of the code that supports "IO:" driver option to specify ISA port > addresses. enum blogic_adapter_bus_type can shrink. "limited_isa" and > "probe*" members of struct blogic_probe_options can go away. You could > add those to this patch, or if you would like, I can create a follow-on > patch to remove that code. I've added the above suggestions. If there is anything more you can easily think of let me know.
On 3/30/21 11:03 AM, Christoph Hellwig wrote: > On Mon, Mar 29, 2021 at 02:29:21PM -0600, Khalid Aziz wrote: >> On 3/25/21 11:58 PM, Christoph Hellwig wrote: >>> 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> >>> --- >>> drivers/scsi/BusLogic.c | 156 ++-------------------------------------- >>> drivers/scsi/BusLogic.h | 3 - >>> drivers/scsi/Kconfig | 2 +- >>> 3 files changed, 6 insertions(+), 155 deletions(-) >>> >> >> Hi Chris, >> >> This looks good. There is more code that can be removed, for instance >> all of the code that supports "IO:" driver option to specify ISA port >> addresses. enum blogic_adapter_bus_type can shrink. "limited_isa" and >> "probe*" members of struct blogic_probe_options can go away. You could >> add those to this patch, or if you would like, I can create a follow-on >> patch to remove that code. > > I've added the above suggestions. If there is anything more you > can easily think of let me know. > Awesome! Thanks. Updates to Documentation/scsi/BusLogic.rst to match these changes would be great. Doc currently lists "IO:" and "NoProbeISA" which can go away. "Supported Host Adapters: section lists ISA and EISA adapters that can go away as well. There is reference to ISA in "QueueDepth:<integer>" - "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." which is irrelevant now. Thanks, Khalid
On Tue, Mar 30, 2021 at 11:15:22AM -0600, Khalid Aziz wrote: > Awesome! Thanks. Updates to Documentation/scsi/BusLogic.rst to match > these changes would be great. Doc currently lists "IO:" and "NoProbeISA" > which can go away. "Supported Host Adapters: section lists ISA and EISA > adapters that can go away as well. There is reference to ISA in > "QueueDepth:<integer>" - "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." which is > irrelevant now. Thanks, I've added these changes as well.
diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c index ccb061ab0a0ad2..c3ed03c4b3f5cb 100644 --- a/drivers/scsi/BusLogic.c +++ b/drivers/scsi/BusLogic.c @@ -561,60 +561,6 @@ static int blogic_cmd(struct blogic_adapter *adapter, enum blogic_opcode opcode, } -/* - 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 */ @@ -3694,9 +3550,7 @@ static int __init blogic_parseopts(char *options) 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")) + } else if (blogic_parse(&options, "NoProbePCI")) blogic_probe_options.noprobe_pci = true; else if (blogic_parse(&options, "NoProbe")) blogic_probe_options.noprobe = true; diff --git a/drivers/scsi/BusLogic.h b/drivers/scsi/BusLogic.h index 6182cc8a0344a8..6eaddc009b5c55 100644 --- a/drivers/scsi/BusLogic.h +++ b/drivers/scsi/BusLogic.h @@ -237,7 +237,6 @@ 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 */ @@ -997,10 +996,8 @@ 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; diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 06b87c7f6babd3..3d114be5b662df 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -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
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> --- drivers/scsi/BusLogic.c | 156 ++-------------------------------------- drivers/scsi/BusLogic.h | 3 - drivers/scsi/Kconfig | 2 +- 3 files changed, 6 insertions(+), 155 deletions(-)