From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/ata/pata_ali.c | 652 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 652 insertions(+) create mode 100644 drivers/ata/pata_ali.c (limited to 'drivers/ata/pata_ali.c') diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c new file mode 100644 index 0000000000..bb790edd60 --- /dev/null +++ b/drivers/ata/pata_ali.c @@ -0,0 +1,652 @@ +/* + * pata_ali.c - ALI 15x3 PATA for new ATA layer + * (C) 2005 Red Hat Inc + * + * based in part upon + * linux/drivers/ide/pci/alim15x3.c Version 0.17 2003/01/02 + * + * Copyright (C) 1998-2000 Michel Aubry, Maintainer + * Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer + * Copyright (C) 1999-2000 CJ, cjtsai@ali.com.tw, Maintainer + * + * Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org) + * May be copied or modified under the terms of the GNU General Public License + * Copyright (C) 2002 Alan Cox + * ALi (now ULi M5228) support by Clear Zhang + * + * Documentation + * Chipset documentation available under NDA only + * + * TODO/CHECK + * Cannot have ATAPI on both master & slave for rev < c2 (???) but + * otherwise should do atapi DMA (For now for old we do PIO only for + * ATAPI) + * Review Sunblade workaround. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DRV_NAME "pata_ali" +#define DRV_VERSION "0.7.8" + +static int ali_atapi_dma; +module_param_named(atapi_dma, ali_atapi_dma, int, 0644); +MODULE_PARM_DESC(atapi_dma, "Enable ATAPI DMA (0=disable, 1=enable)"); + +static struct pci_dev *ali_isa_bridge; + +/* + * Cable special cases + */ + +static const struct dmi_system_id cable_dmi_table[] = { + { + .ident = "HP Pavilion N5430", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"), + }, + }, + { + .ident = "Toshiba Satellite S1800-814", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), + DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"), + }, + }, + { } +}; + +static int ali_cable_override(struct pci_dev *pdev) +{ + /* Fujitsu P2000 */ + if (pdev->subsystem_vendor == 0x10CF && pdev->subsystem_device == 0x10AF) + return 1; + /* Mitac 8317 (Winbook-A) and relatives */ + if (pdev->subsystem_vendor == 0x1071 && pdev->subsystem_device == 0x8317) + return 1; + /* Systems by DMI */ + if (dmi_check_system(cable_dmi_table)) + return 1; + return 0; +} + +/** + * ali_c2_cable_detect - cable detection + * @ap: ATA port + * + * Perform cable detection for C2 and later revisions + */ + +static int ali_c2_cable_detect(struct ata_port *ap) +{ + struct pci_dev *pdev = to_pci_dev(ap->host->dev); + u8 ata66; + + /* Certain laptops use short but suitable cables and don't + implement the detect logic */ + + if (ali_cable_override(pdev)) + return ATA_CBL_PATA40_SHORT; + + /* Host view cable detect 0x4A bit 0 primary bit 1 secondary + Bit set for 40 pin */ + pci_read_config_byte(pdev, 0x4A, &ata66); + if (ata66 & (1 << ap->port_no)) + return ATA_CBL_PATA40; + else + return ATA_CBL_PATA80; +} + +/** + * ali_20_filter - filter for earlier ALI DMA + * @adev: ATA device + * @mask: received mask to manipulate and pass back + * + * Ensure that we do not do DMA on CD devices. We may be able to + * fix that later on. Also ensure we do not do UDMA on WDC drives + */ + +static unsigned int ali_20_filter(struct ata_device *adev, unsigned int mask) +{ + char model_num[ATA_ID_PROD_LEN + 1]; + /* No DMA on anything but a disk for now */ + if (adev->class != ATA_DEV_ATA) + mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); + ata_id_c_string(adev->id, model_num, ATA_ID_PROD, sizeof(model_num)); + if (strstr(model_num, "WDC")) + mask &= ~ATA_MASK_UDMA; + return mask; +} + +/** + * ali_fifo_control - FIFO manager + * @ap: ALi channel to control + * @adev: device for FIFO control + * @on: 0 for off 1 for on + * + * Enable or disable the FIFO on a given device. Because of the way the + * ALi FIFO works it provides a boost on ATA disk but can be confused by + * ATAPI and we must therefore manage it. + */ + +static void ali_fifo_control(struct ata_port *ap, struct ata_device *adev, int on) +{ + struct pci_dev *pdev = to_pci_dev(ap->host->dev); + int pio_fifo = 0x54 + ap->port_no; + u8 fifo; + int shift = 4 * adev->devno; + + /* ATA - FIFO on set nibble to 0x05, ATAPI - FIFO off, set nibble to + 0x00. Not all the docs agree but the behaviour we now use is the + one stated in the BIOS Programming Guide */ + + pci_read_config_byte(pdev, pio_fifo, &fifo); + fifo &= ~(0x0F << shift); + fifo |= (on << shift); + pci_write_config_byte(pdev, pio_fifo, fifo); +} + +/** + * ali_program_modes - load mode registers + * @ap: ALi channel to load + * @adev: Device the timing is for + * @t: timing data + * @ultra: UDMA timing or zero for off + * + * Loads the timing registers for cmd/data and disable UDMA if + * ultra is zero. If ultra is set then load and enable the UDMA + * timing but do not touch the command/data timing. + */ + +static void ali_program_modes(struct ata_port *ap, struct ata_device *adev, struct ata_timing *t, u8 ultra) +{ + struct pci_dev *pdev = to_pci_dev(ap->host->dev); + int cas = 0x58 + 4 * ap->port_no; /* Command timing */ + int cbt = 0x59 + 4 * ap->port_no; /* Command timing */ + int drwt = 0x5A + 4 * ap->port_no + adev->devno; /* R/W timing */ + int udmat = 0x56 + ap->port_no; /* UDMA timing */ + int shift = 4 * adev->devno; + u8 udma; + + if (t != NULL) { + t->setup = clamp_val(t->setup, 1, 8) & 7; + t->act8b = clamp_val(t->act8b, 1, 8) & 7; + t->rec8b = clamp_val(t->rec8b, 1, 16) & 15; + t->active = clamp_val(t->active, 1, 8) & 7; + t->recover = clamp_val(t->recover, 1, 16) & 15; + + pci_write_config_byte(pdev, cas, t->setup); + pci_write_config_byte(pdev, cbt, (t->act8b << 4) | t->rec8b); + pci_write_config_byte(pdev, drwt, (t->active << 4) | t->recover); + } + + /* Set up the UDMA enable */ + pci_read_config_byte(pdev, udmat, &udma); + udma &= ~(0x0F << shift); + udma |= ultra << shift; + pci_write_config_byte(pdev, udmat, udma); +} + +/** + * ali_set_piomode - set initial PIO mode data + * @ap: ATA interface + * @adev: ATA device + * + * Program the ALi registers for PIO mode. + */ + +static void ali_set_piomode(struct ata_port *ap, struct ata_device *adev) +{ + struct ata_device *pair = ata_dev_pair(adev); + struct ata_timing t; + unsigned long T = 1000000000 / 33333; /* PCI clock based */ + + ata_timing_compute(adev, adev->pio_mode, &t, T, 1); + if (pair) { + struct ata_timing p; + ata_timing_compute(pair, pair->pio_mode, &p, T, 1); + ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); + if (ata_dma_enabled(pair)) { + ata_timing_compute(pair, pair->dma_mode, &p, T, 1); + ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); + } + } + + /* PIO FIFO is only permitted on ATA disk */ + if (adev->class != ATA_DEV_ATA) + ali_fifo_control(ap, adev, 0x00); + ali_program_modes(ap, adev, &t, 0); + if (adev->class == ATA_DEV_ATA) + ali_fifo_control(ap, adev, 0x05); + +} + +/** + * ali_set_dmamode - set initial DMA mode data + * @ap: ATA interface + * @adev: ATA device + * + * Program the ALi registers for DMA mode. + */ + +static void ali_set_dmamode(struct ata_port *ap, struct ata_device *adev) +{ + static u8 udma_timing[7] = { 0xC, 0xB, 0xA, 0x9, 0x8, 0xF, 0xD }; + struct ata_device *pair = ata_dev_pair(adev); + struct ata_timing t; + unsigned long T = 1000000000 / 33333; /* PCI clock based */ + struct pci_dev *pdev = to_pci_dev(ap->host->dev); + + + if (adev->class == ATA_DEV_ATA) + ali_fifo_control(ap, adev, 0x08); + + if (adev->dma_mode >= XFER_UDMA_0) { + ali_program_modes(ap, adev, NULL, udma_timing[adev->dma_mode - XFER_UDMA_0]); + if (adev->dma_mode >= XFER_UDMA_3) { + u8 reg4b; + pci_read_config_byte(pdev, 0x4B, ®4b); + reg4b |= 1; + pci_write_config_byte(pdev, 0x4B, reg4b); + } + } else { + ata_timing_compute(adev, adev->dma_mode, &t, T, 1); + if (pair) { + struct ata_timing p; + ata_timing_compute(pair, pair->pio_mode, &p, T, 1); + ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); + if (ata_dma_enabled(pair)) { + ata_timing_compute(pair, pair->dma_mode, &p, T, 1); + ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); + } + } + ali_program_modes(ap, adev, &t, 0); + } +} + +/** + * ali_warn_atapi_dma - Warn about ATAPI DMA disablement + * @adev: Device + * + * Whine about ATAPI DMA disablement if @adev is an ATAPI device. + * Can be used as ->dev_config. + */ + +static void ali_warn_atapi_dma(struct ata_device *adev) +{ + struct ata_eh_context *ehc = &adev->link->eh_context; + int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; + + if (print_info && adev->class == ATA_DEV_ATAPI && !ali_atapi_dma) { + ata_dev_warn(adev, + "WARNING: ATAPI DMA disabled for reliability issues. It can be enabled\n"); + ata_dev_warn(adev, + "WARNING: via pata_ali.atapi_dma modparam or corresponding sysfs node.\n"); + } +} + +/** + * ali_lock_sectors - Keep older devices to 255 sector mode + * @adev: Device + * + * Called during the bus probe for each device that is found. We use + * this call to lock the sector count of the device to 255 or less on + * older ALi controllers. If we didn't do this then large I/O's would + * require LBA48 commands which the older ALi requires are issued by + * slower PIO methods + */ + +static void ali_lock_sectors(struct ata_device *adev) +{ + adev->max_sectors = 255; + ali_warn_atapi_dma(adev); +} + +/** + * ali_check_atapi_dma - DMA check for most ALi controllers + * @qc: Command to complete + * + * Called to decide whether commands should be sent by DMA or PIO + */ + +static int ali_check_atapi_dma(struct ata_queued_cmd *qc) +{ + if (!ali_atapi_dma) { + /* FIXME: pata_ali can't do ATAPI DMA reliably but the + * IDE alim15x3 driver can. I tried lots of things + * but couldn't find what the actual difference was. + * If you got an idea, please write it to + * linux-ide@vger.kernel.org and cc htejun@gmail.com. + * + * Disable ATAPI DMA for now. + */ + return -EOPNOTSUPP; + } + + /* If its not a media command, its not worth it */ + if (atapi_cmd_type(qc->cdb[0]) == ATAPI_MISC) + return -EOPNOTSUPP; + return 0; +} + +static void ali_c2_c3_postreset(struct ata_link *link, unsigned int *classes) +{ + u8 r; + int port_bit = 4 << link->ap->port_no; + + /* If our bridge is an ALI 1533 then do the extra work */ + if (ali_isa_bridge) { + /* Tristate and re-enable the bus signals */ + pci_read_config_byte(ali_isa_bridge, 0x58, &r); + r &= ~port_bit; + pci_write_config_byte(ali_isa_bridge, 0x58, r); + r |= port_bit; + pci_write_config_byte(ali_isa_bridge, 0x58, r); + } + ata_sff_postreset(link, classes); +} + +static const struct scsi_host_template ali_sht = { + ATA_BMDMA_SHT(DRV_NAME), +}; + +/* + * Port operations for PIO only ALi + */ + +static struct ata_port_operations ali_early_port_ops = { + .inherits = &ata_sff_port_ops, + .cable_detect = ata_cable_40wire, + .set_piomode = ali_set_piomode, + .sff_data_xfer = ata_sff_data_xfer32, +}; + +static const struct ata_port_operations ali_dma_base_ops = { + .inherits = &ata_bmdma32_port_ops, + .set_piomode = ali_set_piomode, + .set_dmamode = ali_set_dmamode, +}; + +/* + * Port operations for DMA capable ALi without cable + * detect + */ +static struct ata_port_operations ali_20_port_ops = { + .inherits = &ali_dma_base_ops, + .cable_detect = ata_cable_40wire, + .mode_filter = ali_20_filter, + .check_atapi_dma = ali_check_atapi_dma, + .dev_config = ali_lock_sectors, +}; + +/* + * Port operations for DMA capable ALi with cable detect + */ +static struct ata_port_operations ali_c2_port_ops = { + .inherits = &ali_dma_base_ops, + .check_atapi_dma = ali_check_atapi_dma, + .cable_detect = ali_c2_cable_detect, + .dev_config = ali_lock_sectors, + .postreset = ali_c2_c3_postreset, +}; + +/* + * Port operations for DMA capable ALi with cable detect + */ +static struct ata_port_operations ali_c4_port_ops = { + .inherits = &ali_dma_base_ops, + .check_atapi_dma = ali_check_atapi_dma, + .cable_detect = ali_c2_cable_detect, + .dev_config = ali_lock_sectors, +}; + +/* + * Port operations for DMA capable ALi with cable detect and LBA48 + */ +static struct ata_port_operations ali_c5_port_ops = { + .inherits = &ali_dma_base_ops, + .check_atapi_dma = ali_check_atapi_dma, + .dev_config = ali_warn_atapi_dma, + .cable_detect = ali_c2_cable_detect, +}; + + +/** + * ali_init_chipset - chip setup function + * @pdev: PCI device of ATA controller + * + * Perform the setup on the device that must be done both at boot + * and at resume time. + */ + +static void ali_init_chipset(struct pci_dev *pdev) +{ + u8 tmp; + struct pci_dev *north; + + /* + * The chipset revision selects the driver operations and + * mode data. + */ + + if (pdev->revision <= 0x20) { + pci_read_config_byte(pdev, 0x53, &tmp); + tmp |= 0x03; + pci_write_config_byte(pdev, 0x53, tmp); + } else { + pci_read_config_byte(pdev, 0x4a, &tmp); + pci_write_config_byte(pdev, 0x4a, tmp | 0x20); + pci_read_config_byte(pdev, 0x4B, &tmp); + if (pdev->revision < 0xC2) + /* 1543-E/F, 1543C-C, 1543C-D, 1543C-E */ + /* Clear CD-ROM DMA write bit */ + tmp &= 0x7F; + /* Cable and UDMA */ + if (pdev->revision >= 0xc2) + tmp |= 0x01; + pci_write_config_byte(pdev, 0x4B, tmp | 0x08); + /* + * CD_ROM DMA on (0x53 bit 0). Enable this even if we want + * to use PIO. 0x53 bit 1 (rev 20 only) - enable FIFO control + * via 0x54/55. + */ + pci_read_config_byte(pdev, 0x53, &tmp); + if (pdev->revision >= 0xc7) + tmp |= 0x03; + else + tmp |= 0x01; /* CD_ROM enable for DMA */ + pci_write_config_byte(pdev, 0x53, tmp); + } + north = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus), 0, + PCI_DEVFN(0, 0)); + if (north && north->vendor == PCI_VENDOR_ID_AL && ali_isa_bridge) { + /* Configure the ALi bridge logic. For non ALi rely on BIOS. + Set the south bridge enable bit */ + pci_read_config_byte(ali_isa_bridge, 0x79, &tmp); + if (pdev->revision == 0xC2) + pci_write_config_byte(ali_isa_bridge, 0x79, tmp | 0x04); + else if (pdev->revision > 0xC2 && pdev->revision < 0xC5) + pci_write_config_byte(ali_isa_bridge, 0x79, tmp | 0x02); + } + pci_dev_put(north); + ata_pci_bmdma_clear_simplex(pdev); +} +/** + * ali_init_one - discovery callback + * @pdev: PCI device ID + * @id: PCI table info + * + * An ALi IDE interface has been discovered. Figure out what revision + * and perform configuration work before handing it to the ATA layer + */ + +static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id) +{ + static const struct ata_port_info info_early = { + .flags = ATA_FLAG_SLAVE_POSS, + .pio_mask = ATA_PIO4, + .port_ops = &ali_early_port_ops + }; + /* Revision 0x20 added DMA */ + static const struct ata_port_info info_20 = { + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 | + ATA_FLAG_IGN_SIMPLEX, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .port_ops = &ali_20_port_ops + }; + /* Revision 0x20 with support logic added UDMA */ + static const struct ata_port_info info_20_udma = { + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 | + ATA_FLAG_IGN_SIMPLEX, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA2, + .port_ops = &ali_20_port_ops + }; + /* Revision 0xC2 adds UDMA66 */ + static const struct ata_port_info info_c2 = { + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 | + ATA_FLAG_IGN_SIMPLEX, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA4, + .port_ops = &ali_c2_port_ops + }; + /* Revision 0xC3 is UDMA66 for now */ + static const struct ata_port_info info_c3 = { + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 | + ATA_FLAG_IGN_SIMPLEX, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA4, + .port_ops = &ali_c2_port_ops + }; + /* Revision 0xC4 is UDMA100 */ + static const struct ata_port_info info_c4 = { + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 | + ATA_FLAG_IGN_SIMPLEX, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA5, + .port_ops = &ali_c4_port_ops + }; + /* Revision 0xC5 is UDMA133 with LBA48 DMA */ + static const struct ata_port_info info_c5 = { + .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_IGN_SIMPLEX, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA6, + .port_ops = &ali_c5_port_ops + }; + + const struct ata_port_info *ppi[] = { NULL, NULL }; + u8 tmp; + int rc; + + rc = pcim_enable_device(pdev); + if (rc) + return rc; + + /* + * The chipset revision selects the driver operations and + * mode data. + */ + + if (pdev->revision < 0x20) { + ppi[0] = &info_early; + } else if (pdev->revision < 0xC2) { + ppi[0] = &info_20; + } else if (pdev->revision == 0xC2) { + ppi[0] = &info_c2; + } else if (pdev->revision == 0xC3) { + ppi[0] = &info_c3; + } else if (pdev->revision == 0xC4) { + ppi[0] = &info_c4; + } else + ppi[0] = &info_c5; + + ali_init_chipset(pdev); + + if (ali_isa_bridge && pdev->revision >= 0x20 && pdev->revision < 0xC2) { + /* Are we paired with a UDMA capable chip */ + pci_read_config_byte(ali_isa_bridge, 0x5E, &tmp); + if ((tmp & 0x1E) == 0x12) + ppi[0] = &info_20_udma; + } + + if (!ppi[0]->mwdma_mask && !ppi[0]->udma_mask) + return ata_pci_sff_init_one(pdev, ppi, &ali_sht, NULL, 0); + else + return ata_pci_bmdma_init_one(pdev, ppi, &ali_sht, NULL, 0); +} + +#ifdef CONFIG_PM_SLEEP +static int ali_reinit_one(struct pci_dev *pdev) +{ + struct ata_host *host = pci_get_drvdata(pdev); + int rc; + + rc = ata_pci_device_do_resume(pdev); + if (rc) + return rc; + ali_init_chipset(pdev); + ata_host_resume(host); + return 0; +} +#endif + +static const struct pci_device_id ali[] = { + { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), }, + { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), }, + + { }, +}; + +static struct pci_driver ali_pci_driver = { + .name = DRV_NAME, + .id_table = ali, + .probe = ali_init_one, + .remove = ata_pci_remove_one, +#ifdef CONFIG_PM_SLEEP + .suspend = ata_pci_device_suspend, + .resume = ali_reinit_one, +#endif +}; + +static int __init ali_init(void) +{ + int ret; + ali_isa_bridge = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL); + + ret = pci_register_driver(&ali_pci_driver); + if (ret < 0) + pci_dev_put(ali_isa_bridge); + return ret; +} + + +static void __exit ali_exit(void) +{ + pci_unregister_driver(&ali_pci_driver); + pci_dev_put(ali_isa_bridge); +} + + +MODULE_AUTHOR("Alan Cox"); +MODULE_DESCRIPTION("low-level driver for ALi PATA"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, ali); +MODULE_VERSION(DRV_VERSION); + +module_init(ali_init); +module_exit(ali_exit); -- cgit v1.2.3