/* * sata_sil.c - Silicon Image SATA * * Maintained by: Jeff Garzik <jgarzik@pobox.com> * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * * Copyright 2003-2005 Red Hat, Inc. * Copyright 2003 Benjamin Herrenschmidt * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * * libata documentation is available via 'make {ps|pdf}docs', * as Documentation/DocBook/libata.* * * Documentation for SiI 3112: * http://gkernel.sourceforge.net/specs/sii/3112A_SiI-DS-0095-B2.pdf.bz2 * * Other errata and documentation available under NDA. * */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/device.h> #include <scsi/scsi_host.h> #include <linux/libata.h> #define DRV_NAME "sata_sil" #define DRV_VERSION "0.9" enum { SIL_FLAG_MOD15WRITE = (1 << 30), sil_3112 = 0, sil_3112_m15w = 1, sil_3114 = 2, SIL_FIFO_R0 = 0x40, SIL_FIFO_W0 = 0x41, SIL_FIFO_R1 = 0x44, SIL_FIFO_W1 = 0x45, SIL_FIFO_R2 = 0x240, SIL_FIFO_W2 = 0x241, SIL_FIFO_R3 = 0x244, SIL_FIFO_W3 = 0x245, SIL_SYSCFG = 0x48, SIL_MASK_IDE0_INT = (1 << 22), SIL_MASK_IDE1_INT = (1 << 23), SIL_MASK_IDE2_INT = (1 << 24), SIL_MASK_IDE3_INT = (1 << 25), SIL_MASK_2PORT = SIL_MASK_IDE0_INT | SIL_MASK_IDE1_INT, SIL_MASK_4PORT = SIL_MASK_2PORT | SIL_MASK_IDE2_INT | SIL_MASK_IDE3_INT, SIL_IDE2_BMDMA = 0x200, SIL_INTR_STEERING = (1 << 1), SIL_QUIRK_MOD15WRITE = (1 << 0), SIL_QUIRK_UDMA5MAX = (1 << 1), }; static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); static void sil_dev_config(struct ata_port *ap, struct ata_device *dev); static u32 sil_scr_read (struct ata_port *ap, unsigned int sc_reg); static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val); static void sil_post_set_mode (struct ata_port *ap); static const struct pci_device_id sil_pci_tbl[] = { { 0x1095, 0x3112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w }, { 0x1095, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w }, { 0x1095, 0x3512, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 }, { 0x1095, 0x3114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3114 }, { 0x1002, 0x436e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w }, { 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w }, { 0x1002, 0x437a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w }, { } /* terminate list */ }; /* TODO firmware versions should be added - eric */ static const struct sil_drivelist { const char * product; unsigned int quirk; } sil_blacklist [] = { { "ST320012AS", SIL_QUIRK_MOD15WRITE }, { "ST330013AS", SIL_QUIRK_MOD15WRITE }, { "ST340017AS", SIL_QUIRK_MOD15WRITE }, { "ST360015AS", SIL_QUIRK_MOD15WRITE }, { "ST380013AS", SIL_QUIRK_MOD15WRITE }, { "ST380023AS", SIL_QUIRK_MOD15WRITE }, { "ST3120023AS", SIL_QUIRK_MOD15WRITE }, { "ST3160023AS", SIL_QUIRK_MOD15WRITE }, { "ST3120026AS", SIL_QUIRK_MOD15WRITE }, { "ST3200822AS", SIL_QUIRK_MOD15WRITE }, { "ST340014ASL", SIL_QUIRK_MOD15WRITE }, { "ST360014ASL", SIL_QUIRK_MOD15WRITE }, { "ST380011ASL", SIL_QUIRK_MOD15WRITE }, { "ST3120022ASL", SIL_QUIRK_MOD15WRITE }, { "ST3160021ASL", SIL_QUIRK_MOD15WRITE }, { "Maxtor 4D060H3", SIL_QUIRK_UDMA5MAX }, { } }; static struct pci_driver sil_pci_driver = { .name = DRV_NAME, .id_table = sil_pci_tbl, .probe = sil_init_one, .remove = ata_pci_remove_one, }; static struct scsi_host_template sil_sht = { .module = THIS_MODULE, .name = DRV_NAME, .ioctl = ata_scsi_ioctl, .queuecommand = ata_scsi_queuecmd, .eh_strategy_handler = ata_scsi_error, .can_queue = ATA_DEF_QUEUE, .this_id = ATA_SHT_THIS_ID, .sg_tablesize = LIBATA_MAX_PRD, .max_sectors = ATA_MAX_SECTORS, .cmd_per_lun = ATA_SHT_CMD_PER_LUN, .emulated = ATA_SHT_EMULATED, .use_clustering = ATA_SHT_USE_CLUSTERING, .proc_name = DRV_NAME, .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, }; static const struct ata_port_operations sil_ops = { .port_disable = ata_port_disable, .dev_config = sil_dev_config, .tf_load = ata_tf_load, .tf_read = ata_tf_read, .check_status = ata_check_status, .exec_command = ata_exec_command, .dev_select = ata_std_dev_select, .phy_reset = sata_phy_reset, .post_set_mode = sil_post_set_mode, .bmdma_setup = ata_bmdma_setup, .bmdma_start = ata_bmdma_start, .bmdma_stop = ata_bmdma_stop, .bmdma_status = ata_bmdma_status, .qc_prep = ata_qc_prep, .qc_issue = ata_qc_issue_prot, .eng_timeout = ata_eng_timeout, .irq_handler = ata_interrupt, .irq_clear = ata_bmdma_irq_clear, .scr_read = sil_scr_read, .scr_write = sil_scr_write, .port_start = ata_port_start, .port_stop = ata_port_stop, .host_stop = ata_pci_host_stop, }; static const struct ata_port_info sil_port_info[] = { /* sil_3112 */ { .sht = &sil_sht, .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST | ATA_FLAG_MMIO, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = 0x3f, /* udma0-5 */ .port_ops = &sil_ops, }, /* sil_3112_15w - keep it sync'd w/ sil_3112 */ { .sht = &sil_sht, .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST | ATA_FLAG_MMIO | SIL_FLAG_MOD15WRITE, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = 0x3f, /* udma0-5 */ .port_ops = &sil_ops, }, /* sil_3114 */ { .sht = &sil_sht, .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST | ATA_FLAG_MMIO, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = 0x3f, /* udma0-5 */ .port_ops = &sil_ops, }, }; /* per-port register offsets */ /* TODO: we can probably calculate rather than use a table */ static const struct { unsigned long tf; /* ATA taskfile register block */ unsigned long ctl; /* ATA control/altstatus register block */ unsigned long bmdma; /* DMA register block */ unsigned long scr; /* SATA control register block */ unsigned long sien; /* SATA Interrupt Enable register */ unsigned long xfer_mode;/* data transfer mode register */ } sil_port[] = { /* port 0 ... */ { 0x80, 0x8A, 0x00, 0x100, 0x148, 0xb4 }, { 0xC0, 0xCA, 0x08, 0x180, 0x1c8, 0xf4 }, { 0x280, 0x28A, 0x200, 0x300, 0x348, 0x2b4 }, { 0x2C0, 0x2CA, 0x208, 0x380, 0x3c8, 0x2f4 }, /* ... port 3 */ }; MODULE_AUTHOR("Jeff Garzik"); MODULE_DESCRIPTION("low-level driver for Silicon Image SATA controller"); MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(pci, sil_pci_tbl); MODULE_VERSION(DRV_VERSION); static unsigned char sil_get_device_cache_line(struct pci_dev *pdev) { u8 cache_line = 0; pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line); return cache_line; } static void sil_post_set_mode (struct ata_port *ap) { struct ata_host_set *host_set = ap->host_set; struct ata_device *dev; void __iomem *addr = host_set->mmio_base + sil_port[ap->port_no].xfer_mode; u32 tmp, dev_mode[2]; unsigned int i; for (i = 0; i < 2; i++) { dev = &ap->device[i]; if (!ata_dev_present(dev)) dev_mode[i] = 0; /* PIO0/1/2 */ else if (dev->flags & ATA_DFLAG_PIO) dev_mode[i] = 1; /* PIO3/4 */ else dev_mode[i] = 3; /* UDMA */ /* value 2 indicates MDMA */ } tmp = readl(addr); tmp &= ~((1<<5) | (1<<4) | (1<<1) | (1<<0)); tmp |= dev_mode[0]; tmp |= (dev_mode[1] << 4); writel(tmp, addr); readl(addr); /* flush */ } static inline unsigned long sil_scr_addr(struct ata_port *ap, unsigned int sc_reg) { unsigned long offset = ap->ioaddr.scr_addr; switch (sc_reg) { case SCR_STATUS: return offset + 4; case SCR_ERROR: return offset + 8; case SCR_CONTROL: return offset; default: /* do nothing */ break; } return 0; } static u32 sil_scr_read (struct ata_port *ap, unsigned int sc_reg) { void __iomem *mmio = (void __iomem *) sil_scr_addr(ap, sc_reg); if (mmio) return readl(mmio); return 0xffffffffU; } static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val) { void *mmio = (void __iomem *) sil_scr_addr(ap, sc_reg); if (mmio) writel(val, mmio); } /** * sil_dev_config - Apply device/host-specific errata fixups * @ap: Port containing device to be examined * @dev: Device to be examined * * After the IDENTIFY [PACKET] DEVICE step is complete, and a * device is known to be present, this function is called. * We apply two errata fixups which are specific to Silicon Image, * a Seagate and a Maxtor fixup. * * For certain Seagate devices, we must limit the maximum sectors * to under 8K. * * For certain Maxtor devices, we must not program the drive * beyond udma5. * * Both fixups are unfairly pessimistic. As soon as I get more * information on these errata, I will create a more exhaustive * list, and apply the fixups to only the specific * devices/hosts/firmwares that need it. * * 20040111 - Seagate drives affected by the Mod15Write bug are blacklisted * The Maxtor quirk is in the blacklist, but I'm keeping the original * pessimistic fix for the following reasons... * - There seems to be less info on it, only one device gleaned off the * Windows driver, maybe only one is affected. More info would be greatly * appreciated. * - But then again UDMA5 is hardly anything to complain about */ static void sil_dev_config(struct ata_port *ap, struct ata_device *dev) { unsigned int n, quirks = 0; unsigned char model_num[40]; const char *s; unsigned int len; ata_dev_id_string(dev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num)); s = &model_num[0]; len = strnlen(s, sizeof(model_num)); /* ATAPI specifies that empty space is blank-filled; remove blanks */ while ((len > 0) && (s[len - 1] == ' ')) len--; for (n = 0; sil_blacklist[n].product; n++) if (!memcmp(sil_blacklist[n].product, s, strlen(sil_blacklist[n].product))) { quirks = sil_blacklist[n].quirk; break; } /* limit requests to 15 sectors */ if ((ap->flags & SIL_FLAG_MOD15WRITE) && (quirks & SIL_QUIRK_MOD15WRITE)) { printk(KERN_INFO "ata%u(%u): applying Seagate errata fix\n", ap->id, dev->devno); ap->host->max_sectors = 15; ap->host->hostt->max_sectors = 15; dev->flags |= ATA_DFLAG_LOCK_SECTORS; return; } /* limit to udma5 */ if (quirks & SIL_QUIRK_UDMA5MAX) { printk(KERN_INFO "ata%u(%u): applying Maxtor errata fix %s\n", ap->id, dev->devno, s); ap->udma_mask &= ATA_UDMA5; return; } } static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) { static int printed_version; struct ata_probe_ent *probe_ent = NULL; unsigned long base; void __iomem *mmio_base; int rc; unsigned int i; int pci_dev_busy = 0; u32 tmp, irq_mask; u8 cls; if (!printed_version++) dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); /* * If this driver happens to only be useful on Apple's K2, then * we should check that here as it has a normal Serverworks ID */ rc = pci_enable_device(pdev); if (rc) return rc; rc = pci_request_regions(pdev, DRV_NAME); if (rc) { pci_dev_busy = 1; goto err_out; } rc = pci_set_dma_mask(pdev, ATA_DMA_MASK); if (rc) goto err_out_regions; rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK); if (rc) goto err_out_regions; probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL); if (probe_ent == NULL) { rc = -ENOMEM; goto err_out_regions; } memset(probe_ent, 0, sizeof(*probe_ent)); INIT_LIST_HEAD(&probe_ent->node); probe_ent->dev = pci_dev_to_dev(pdev); probe_ent->port_ops = sil_port_info[ent->driver_data].port_ops; probe_ent->sht = sil_port_info[ent->driver_data].sht; probe_ent->n_ports = (ent->driver_data == sil_3114) ? 4 : 2; probe_ent->pio_mask = sil_port_info[ent->driver_data].pio_mask; probe_ent->mwdma_mask = sil_port_info[ent->driver_data].mwdma_mask; probe_ent->udma_mask = sil_port_info[ent->driver_data].udma_mask; probe_ent->irq = pdev->irq; probe_ent->irq_flags = SA_SHIRQ; probe_ent->host_flags = sil_port_info[ent->driver_data].host_flags; mmio_base = pci_iomap(pdev, 5, 0); if (mmio_base == NULL) { rc = -ENOMEM; goto err_out_free_ent; } probe_ent->mmio_base = mmio_base; base = (unsigned long) mmio_base; for (i = 0; i < probe_ent->n_ports; i++) { probe_ent->port[i].cmd_addr = base + sil_port[i].tf; probe_ent->port[i].altstatus_addr = probe_ent->port[i].ctl_addr = base + sil_port[i].ctl; probe_ent->port[i].bmdma_addr = base + sil_port[i].bmdma; probe_ent->port[i].scr_addr = base + sil_port[i].scr; ata_std_ports(&probe_ent->port[i]); } /* Initialize FIFO PCI bus arbitration */ cls = sil_get_device_cache_line(pdev); if (cls) { cls >>= 3; cls++; /* cls = (line_size/8)+1 */ writeb(cls, mmio_base + SIL_FIFO_R0); writeb(cls, mmio_base + SIL_FIFO_W0); writeb(cls, mmio_base + SIL_FIFO_R1); writeb(cls, mmio_base + SIL_FIFO_W1); if (ent->driver_data == sil_3114) { writeb(cls, mmio_base + SIL_FIFO_R2); writeb(cls, mmio_base + SIL_FIFO_W2); writeb(cls, mmio_base + SIL_FIFO_R3); writeb(cls, mmio_base + SIL_FIFO_W3); } } else dev_printk(KERN_WARNING, &pdev->dev, "cache line size not set. Driver may not function\n"); if (ent->driver_data == sil_3114) { irq_mask = SIL_MASK_4PORT; /* flip the magic "make 4 ports work" bit */ tmp = readl(mmio_base + SIL_IDE2_BMDMA); if ((tmp & SIL_INTR_STEERING) == 0) writel(tmp | SIL_INTR_STEERING, mmio_base + SIL_IDE2_BMDMA); } else { irq_mask = SIL_MASK_2PORT; } /* make sure IDE0/1/2/3 interrupts are not masked */ tmp = readl(mmio_base + SIL_SYSCFG); if (tmp & irq_mask) { tmp &= ~irq_mask; writel(tmp, mmio_base + SIL_SYSCFG); readl(mmio_base + SIL_SYSCFG); /* flush */ } /* mask all SATA phy-related interrupts */ /* TODO: unmask bit 6 (SError N bit) for hotplug */ for (i = 0; i < probe_ent->n_ports; i++) writel(0, mmio_base + sil_port[i].sien); pci_set_master(pdev); /* FIXME: check ata_device_add return value */ ata_device_add(probe_ent); kfree(probe_ent); return 0; err_out_free_ent: kfree(probe_ent); err_out_regions: pci_release_regions(pdev); err_out: if (!pci_dev_busy) pci_disable_device(pdev); return rc; } static int __init sil_init(void) { return pci_module_init(&sil_pci_driver); } static void __exit sil_exit(void) { pci_unregister_driver(&sil_pci_driver); } module_init(sil_init); module_exit(sil_exit);