diff options
Diffstat (limited to 'drivers/scsi/sata_nv.c')
| -rw-r--r-- | drivers/scsi/sata_nv.c | 570 |
1 files changed, 570 insertions, 0 deletions
diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c new file mode 100644 index 000000000000..69009f853a49 --- /dev/null +++ b/drivers/scsi/sata_nv.c @@ -0,0 +1,570 @@ +/* + * sata_nv.c - NVIDIA nForce SATA + * + * Copyright 2004 NVIDIA Corp. All rights reserved. + * Copyright 2004 Andrew Chew + * + * The contents of this file are subject to the Open + * Software License version 1.1 that can be found at + * http://www.opensource.org/licenses/osl-1.1.txt and is included herein + * by reference. + * + * Alternatively, the contents of this file may be used under the terms + * of the GNU General Public License version 2 (the "GPL") as distributed + * in the kernel source COPYING file, in which case the provisions of + * the GPL are applicable instead of the above. If you wish to allow + * the use of your version of this file only under the terms of the + * GPL and not to allow others to use your version of this file under + * the OSL, indicate your decision by deleting the provisions above and + * replace them with the notice and other provisions required by the GPL. + * If you do not delete the provisions above, a recipient may use your + * version of this file under either the OSL or the GPL. + * + * 0.06 + * - Added generic SATA support by using a pci_device_id that filters on + * the IDE storage class code. + * + * 0.03 + * - Fixed a bug where the hotplug handlers for non-CK804/MCP04 were using + * mmio_base, which is only set for the CK804/MCP04 case. + * + * 0.02 + * - Added support for CK804 SATA controller. + * + * 0.01 + * - Initial revision. + */ + +#include <linux/config.h> +#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 "scsi.h" +#include <scsi/scsi_host.h> +#include <linux/libata.h> + +#define DRV_NAME "sata_nv" +#define DRV_VERSION "0.6" + +#define NV_PORTS 2 +#define NV_PIO_MASK 0x1f +#define NV_MWDMA_MASK 0x07 +#define NV_UDMA_MASK 0x7f +#define NV_PORT0_SCR_REG_OFFSET 0x00 +#define NV_PORT1_SCR_REG_OFFSET 0x40 + +#define NV_INT_STATUS 0x10 +#define NV_INT_STATUS_CK804 0x440 +#define NV_INT_STATUS_PDEV_INT 0x01 +#define NV_INT_STATUS_PDEV_PM 0x02 +#define NV_INT_STATUS_PDEV_ADDED 0x04 +#define NV_INT_STATUS_PDEV_REMOVED 0x08 +#define NV_INT_STATUS_SDEV_INT 0x10 +#define NV_INT_STATUS_SDEV_PM 0x20 +#define NV_INT_STATUS_SDEV_ADDED 0x40 +#define NV_INT_STATUS_SDEV_REMOVED 0x80 +#define NV_INT_STATUS_PDEV_HOTPLUG (NV_INT_STATUS_PDEV_ADDED | \ + NV_INT_STATUS_PDEV_REMOVED) +#define NV_INT_STATUS_SDEV_HOTPLUG (NV_INT_STATUS_SDEV_ADDED | \ + NV_INT_STATUS_SDEV_REMOVED) +#define NV_INT_STATUS_HOTPLUG (NV_INT_STATUS_PDEV_HOTPLUG | \ + NV_INT_STATUS_SDEV_HOTPLUG) + +#define NV_INT_ENABLE 0x11 +#define NV_INT_ENABLE_CK804 0x441 +#define NV_INT_ENABLE_PDEV_MASK 0x01 +#define NV_INT_ENABLE_PDEV_PM 0x02 +#define NV_INT_ENABLE_PDEV_ADDED 0x04 +#define NV_INT_ENABLE_PDEV_REMOVED 0x08 +#define NV_INT_ENABLE_SDEV_MASK 0x10 +#define NV_INT_ENABLE_SDEV_PM 0x20 +#define NV_INT_ENABLE_SDEV_ADDED 0x40 +#define NV_INT_ENABLE_SDEV_REMOVED 0x80 +#define NV_INT_ENABLE_PDEV_HOTPLUG (NV_INT_ENABLE_PDEV_ADDED | \ + NV_INT_ENABLE_PDEV_REMOVED) +#define NV_INT_ENABLE_SDEV_HOTPLUG (NV_INT_ENABLE_SDEV_ADDED | \ + NV_INT_ENABLE_SDEV_REMOVED) +#define NV_INT_ENABLE_HOTPLUG (NV_INT_ENABLE_PDEV_HOTPLUG | \ + NV_INT_ENABLE_SDEV_HOTPLUG) + +#define NV_INT_CONFIG 0x12 +#define NV_INT_CONFIG_METHD 0x01 // 0 = INT, 1 = SMI + +// For PCI config register 20 +#define NV_MCP_SATA_CFG_20 0x50 +#define NV_MCP_SATA_CFG_20_SATA_SPACE_EN 0x04 + +static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); +static irqreturn_t nv_interrupt (int irq, void *dev_instance, + struct pt_regs *regs); +static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg); +static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val); +static void nv_host_stop (struct ata_host_set *host_set); +static void nv_enable_hotplug(struct ata_probe_ent *probe_ent); +static void nv_disable_hotplug(struct ata_host_set *host_set); +static void nv_check_hotplug(struct ata_host_set *host_set); +static void nv_enable_hotplug_ck804(struct ata_probe_ent *probe_ent); +static void nv_disable_hotplug_ck804(struct ata_host_set *host_set); +static void nv_check_hotplug_ck804(struct ata_host_set *host_set); + +enum nv_host_type +{ + GENERIC, + NFORCE2, + NFORCE3, + CK804 +}; + +static struct pci_device_id nv_pci_tbl[] = { + { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, NFORCE2 }, + { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, NFORCE3 }, + { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, NFORCE3 }, + { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, CK804 }, + { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, CK804 }, + { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, CK804 }, + { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, CK804 }, + { PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, + PCI_ANY_ID, PCI_ANY_ID, + PCI_CLASS_STORAGE_IDE<<8, 0xffff00, GENERIC }, + { 0, } /* terminate list */ +}; + +#define NV_HOST_FLAGS_SCR_MMIO 0x00000001 + +struct nv_host_desc +{ + enum nv_host_type host_type; + void (*enable_hotplug)(struct ata_probe_ent *probe_ent); + void (*disable_hotplug)(struct ata_host_set *host_set); + void (*check_hotplug)(struct ata_host_set *host_set); + +}; +static struct nv_host_desc nv_device_tbl[] = { + { + .host_type = GENERIC, + .enable_hotplug = NULL, + .disable_hotplug= NULL, + .check_hotplug = NULL, + }, + { + .host_type = NFORCE2, + .enable_hotplug = nv_enable_hotplug, + .disable_hotplug= nv_disable_hotplug, + .check_hotplug = nv_check_hotplug, + }, + { + .host_type = NFORCE3, + .enable_hotplug = nv_enable_hotplug, + .disable_hotplug= nv_disable_hotplug, + .check_hotplug = nv_check_hotplug, + }, + { .host_type = CK804, + .enable_hotplug = nv_enable_hotplug_ck804, + .disable_hotplug= nv_disable_hotplug_ck804, + .check_hotplug = nv_check_hotplug_ck804, + }, +}; + +struct nv_host +{ + struct nv_host_desc *host_desc; + unsigned long host_flags; +}; + +static struct pci_driver nv_pci_driver = { + .name = DRV_NAME, + .id_table = nv_pci_tbl, + .probe = nv_init_one, + .remove = ata_pci_remove_one, +}; + +static Scsi_Host_Template nv_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, + .ordered_flush = 1, +}; + +static struct ata_port_operations nv_ops = { + .port_disable = ata_port_disable, + .tf_load = ata_tf_load, + .tf_read = ata_tf_read, + .exec_command = ata_exec_command, + .check_status = ata_check_status, + .dev_select = ata_std_dev_select, + .phy_reset = sata_phy_reset, + .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 = nv_interrupt, + .irq_clear = ata_bmdma_irq_clear, + .scr_read = nv_scr_read, + .scr_write = nv_scr_write, + .port_start = ata_port_start, + .port_stop = ata_port_stop, + .host_stop = nv_host_stop, +}; + +/* FIXME: The hardware provides the necessary SATA PHY controls + * to support ATA_FLAG_SATA_RESET. However, it is currently + * necessary to disable that flag, to solve misdetection problems. + * See http://bugme.osdl.org/show_bug.cgi?id=3352 for more info. + * + * This problem really needs to be investigated further. But in the + * meantime, we avoid ATA_FLAG_SATA_RESET to get people working. + */ +static struct ata_port_info nv_port_info = { + .sht = &nv_sht, + .host_flags = ATA_FLAG_SATA | + /* ATA_FLAG_SATA_RESET | */ + ATA_FLAG_SRST | + ATA_FLAG_NO_LEGACY, + .pio_mask = NV_PIO_MASK, + .mwdma_mask = NV_MWDMA_MASK, + .udma_mask = NV_UDMA_MASK, + .port_ops = &nv_ops, +}; + +MODULE_AUTHOR("NVIDIA"); +MODULE_DESCRIPTION("low-level driver for NVIDIA nForce SATA controller"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, nv_pci_tbl); +MODULE_VERSION(DRV_VERSION); + +static irqreturn_t nv_interrupt (int irq, void *dev_instance, + struct pt_regs *regs) +{ + struct ata_host_set *host_set = dev_instance; + struct nv_host *host = host_set->private_data; + unsigned int i; + unsigned int handled = 0; + unsigned long flags; + + spin_lock_irqsave(&host_set->lock, flags); + + for (i = 0; i < host_set->n_ports; i++) { + struct ata_port *ap; + + ap = host_set->ports[i]; + if (ap && (!(ap->flags & ATA_FLAG_PORT_DISABLED))) { + struct ata_queued_cmd *qc; + + qc = ata_qc_from_tag(ap, ap->active_tag); + if (qc && (!(qc->tf.ctl & ATA_NIEN))) + handled += ata_host_intr(ap, qc); + } + + } + + if (host->host_desc->check_hotplug) + host->host_desc->check_hotplug(host_set); + + spin_unlock_irqrestore(&host_set->lock, flags); + + return IRQ_RETVAL(handled); +} + +static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg) +{ + struct ata_host_set *host_set = ap->host_set; + struct nv_host *host = host_set->private_data; + + if (sc_reg > SCR_CONTROL) + return 0xffffffffU; + + if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO) + return readl((void*)ap->ioaddr.scr_addr + (sc_reg * 4)); + else + return inl(ap->ioaddr.scr_addr + (sc_reg * 4)); +} + +static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val) +{ + struct ata_host_set *host_set = ap->host_set; + struct nv_host *host = host_set->private_data; + + if (sc_reg > SCR_CONTROL) + return; + + if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO) + writel(val, (void*)ap->ioaddr.scr_addr + (sc_reg * 4)); + else + outl(val, ap->ioaddr.scr_addr + (sc_reg * 4)); +} + +static void nv_host_stop (struct ata_host_set *host_set) +{ + struct nv_host *host = host_set->private_data; + + // Disable hotplug event interrupts. + if (host->host_desc->disable_hotplug) + host->host_desc->disable_hotplug(host_set); + + kfree(host); +} + +static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) +{ + static int printed_version = 0; + struct nv_host *host; + struct ata_port_info *ppi; + struct ata_probe_ent *probe_ent; + int pci_dev_busy = 0; + int rc; + u32 bar; + + // Make sure this is a SATA controller by counting the number of bars + // (NVIDIA SATA controllers will always have six bars). Otherwise, + // it's an IDE controller and we ignore it. + for (bar=0; bar<6; bar++) + if (pci_resource_start(pdev, bar) == 0) + return -ENODEV; + + if (!printed_version++) + printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n"); + + rc = pci_enable_device(pdev); + if (rc) + goto err_out; + + rc = pci_request_regions(pdev, DRV_NAME); + if (rc) { + pci_dev_busy = 1; + goto err_out_disable; + } + + 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; + + rc = -ENOMEM; + + ppi = &nv_port_info; + probe_ent = ata_pci_init_native_mode(pdev, &ppi); + if (!probe_ent) + goto err_out_regions; + + host = kmalloc(sizeof(struct nv_host), GFP_KERNEL); + if (!host) + goto err_out_free_ent; + + memset(host, 0, sizeof(struct nv_host)); + host->host_desc = &nv_device_tbl[ent->driver_data]; + + probe_ent->private_data = host; + + if (pci_resource_flags(pdev, 5) & IORESOURCE_MEM) + host->host_flags |= NV_HOST_FLAGS_SCR_MMIO; + + if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO) { + unsigned long base; + + probe_ent->mmio_base = ioremap(pci_resource_start(pdev, 5), + pci_resource_len(pdev, 5)); + if (probe_ent->mmio_base == NULL) { + rc = -EIO; + goto err_out_free_host; + } + + base = (unsigned long)probe_ent->mmio_base; + + probe_ent->port[0].scr_addr = + base + NV_PORT0_SCR_REG_OFFSET; + probe_ent->port[1].scr_addr = + base + NV_PORT1_SCR_REG_OFFSET; + } else { + + probe_ent->port[0].scr_addr = + pci_resource_start(pdev, 5) | NV_PORT0_SCR_REG_OFFSET; + probe_ent->port[1].scr_addr = + pci_resource_start(pdev, 5) | NV_PORT1_SCR_REG_OFFSET; + } + + pci_set_master(pdev); + + rc = ata_device_add(probe_ent); + if (rc != NV_PORTS) + goto err_out_iounmap; + + // Enable hotplug event interrupts. + if (host->host_desc->enable_hotplug) + host->host_desc->enable_hotplug(probe_ent); + + kfree(probe_ent); + + return 0; + +err_out_iounmap: + if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO) + iounmap(probe_ent->mmio_base); +err_out_free_host: + kfree(host); +err_out_free_ent: + kfree(probe_ent); +err_out_regions: + pci_release_regions(pdev); +err_out_disable: + if (!pci_dev_busy) + pci_disable_device(pdev); +err_out: + return rc; +} + +static void nv_enable_hotplug(struct ata_probe_ent *probe_ent) +{ + u8 intr_mask; + + outb(NV_INT_STATUS_HOTPLUG, + probe_ent->port[0].scr_addr + NV_INT_STATUS); + + intr_mask = inb(probe_ent->port[0].scr_addr + NV_INT_ENABLE); + intr_mask |= NV_INT_ENABLE_HOTPLUG; + + outb(intr_mask, probe_ent->port[0].scr_addr + NV_INT_ENABLE); +} + +static void nv_disable_hotplug(struct ata_host_set *host_set) +{ + u8 intr_mask; + + intr_mask = inb(host_set->ports[0]->ioaddr.scr_addr + NV_INT_ENABLE); + + intr_mask &= ~(NV_INT_ENABLE_HOTPLUG); + + outb(intr_mask, host_set->ports[0]->ioaddr.scr_addr + NV_INT_ENABLE); +} + +static void nv_check_hotplug(struct ata_host_set *host_set) +{ + u8 intr_status; + + intr_status = inb(host_set->ports[0]->ioaddr.scr_addr + NV_INT_STATUS); + + // Clear interrupt status. + outb(0xff, host_set->ports[0]->ioaddr.scr_addr + NV_INT_STATUS); + + if (intr_status & NV_INT_STATUS_HOTPLUG) { + if (intr_status & NV_INT_STATUS_PDEV_ADDED) + printk(KERN_WARNING "nv_sata: " + "Primary device added\n"); + + if (intr_status & NV_INT_STATUS_PDEV_REMOVED) + printk(KERN_WARNING "nv_sata: " + "Primary device removed\n"); + + if (intr_status & NV_INT_STATUS_SDEV_ADDED) + printk(KERN_WARNING "nv_sata: " + "Secondary device added\n"); + + if (intr_status & NV_INT_STATUS_SDEV_REMOVED) + printk(KERN_WARNING "nv_sata: " + "Secondary device removed\n"); + } +} + +static void nv_enable_hotplug_ck804(struct ata_probe_ent *probe_ent) +{ + struct pci_dev *pdev = to_pci_dev(probe_ent->dev); + u8 intr_mask; + u8 regval; + + pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val); + regval |= NV_MCP_SATA_CFG_20_SATA_SPACE_EN; + pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval); + + writeb(NV_INT_STATUS_HOTPLUG, probe_ent->mmio_base + NV_INT_STATUS_CK804); + + intr_mask = readb(probe_ent->mmio_base + NV_INT_ENABLE_CK804); + intr_mask |= NV_INT_ENABLE_HOTPLUG; + + writeb(intr_mask, probe_ent->mmio_base + NV_INT_ENABLE_CK804); +} + +static void nv_disable_hotplug_ck804(struct ata_host_set *host_set) +{ + struct pci_dev *pdev = to_pci_dev(host_set->dev); + u8 intr_mask; + u8 regval; + + intr_mask = readb(host_set->mmio_base + NV_INT_ENABLE_CK804); + + intr_mask &= ~(NV_INT_ENABLE_HOTPLUG); + + writeb(intr_mask, host_set->mmio_base + NV_INT_ENABLE_CK804); + + pci_read_config_byte(pdev, NV_MCP_SATA_CFG_20, ®val); + regval &= ~NV_MCP_SATA_CFG_20_SATA_SPACE_EN; + pci_write_config_byte(pdev, NV_MCP_SATA_CFG_20, regval); +} + +static void nv_check_hotplug_ck804(struct ata_host_set *host_set) +{ + u8 intr_status; + + intr_status = readb(host_set->mmio_base + NV_INT_STATUS_CK804); + + // Clear interrupt status. + writeb(0xff, host_set->mmio_base + NV_INT_STATUS_CK804); + + if (intr_status & NV_INT_STATUS_HOTPLUG) { + if (intr_status & NV_INT_STATUS_PDEV_ADDED) + printk(KERN_WARNING "nv_sata: " + "Primary device added\n"); + + if (intr_status & NV_INT_STATUS_PDEV_REMOVED) + printk(KERN_WARNING "nv_sata: " + "Primary device removed\n"); + + if (intr_status & NV_INT_STATUS_SDEV_ADDED) + printk(KERN_WARNING "nv_sata: " + "Secondary device added\n"); + + if (intr_status & NV_INT_STATUS_SDEV_REMOVED) + printk(KERN_WARNING "nv_sata: " + "Secondary device removed\n"); + } +} + +static int __init nv_init(void) +{ + return pci_module_init(&nv_pci_driver); +} + +static void __exit nv_exit(void) +{ + pci_unregister_driver(&nv_pci_driver); +} + +module_init(nv_init); +module_exit(nv_exit); |