*
* Maintained by: Jeff Garzik <jgarzik@pobox.com>
* Please ALWAYS copy linux-ide@vger.kernel.org
- on emails.
+ * on emails.
*
* Copyright 2003-2004 Red Hat, Inc. All rights reserved.
* Copyright 2003-2004 Jeff Garzik
* Hardware documentation available under NDA.
*
*
- * To-do list:
- * - VT6421 PATA support
*
*/
#include <linux/device.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
-#include <asm/io.h>
#define DRV_NAME "sata_via"
-#define DRV_VERSION "2.0"
+#define DRV_VERSION "2.3"
enum board_ids_enum {
vt6420,
SATA_CHAN_ENAB = 0x40, /* SATA channel enable */
SATA_INT_GATE = 0x41, /* SATA interrupt gating */
SATA_NATIVE_MODE = 0x42, /* Native mode enable */
- SATA_PATA_SHARING = 0x49, /* PATA/SATA sharing func ctrl */
+ PATA_UDMA_TIMING = 0xB3, /* PATA timing for DMA/ cable detect */
+ PATA_PIO_TIMING = 0xAB, /* PATA timing register */
PORT0 = (1 << 1),
PORT1 = (1 << 0),
ALL_PORTS = PORT0 | PORT1,
- N_PORTS = 2,
NATIVE_MODE_ALL = (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),
SATA_EXT_PHY = (1 << 6), /* 0==use PATA, 1==ext phy */
- SATA_2DEV = (1 << 5), /* SATA is master/slave */
};
-static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
-static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
-static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
+static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
+static int svia_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
+static int svia_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
+static void svia_noop_freeze(struct ata_port *ap);
+static int vt6420_prereset(struct ata_link *link, unsigned long deadline);
+static int vt6421_pata_cable_detect(struct ata_port *ap);
+static void vt6421_set_pio_mode(struct ata_port *ap, struct ata_device *adev);
+static void vt6421_set_dma_mode(struct ata_port *ap, struct ata_device *adev);
static const struct pci_device_id svia_pci_tbl[] = {
- { 0x1106, 0x3149, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6420 },
- { 0x1106, 0x3249, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6421 },
+ { PCI_VDEVICE(VIA, 0x5337), vt6420 },
+ { PCI_VDEVICE(VIA, 0x0591), vt6420 },
+ { PCI_VDEVICE(VIA, 0x3149), vt6420 },
+ { PCI_VDEVICE(VIA, 0x3249), vt6421 },
+ { PCI_VDEVICE(VIA, 0x5287), vt6420 },
+ { PCI_VDEVICE(VIA, 0x5372), vt6420 },
+ { PCI_VDEVICE(VIA, 0x7372), vt6420 },
{ } /* terminate list */
};
.name = DRV_NAME,
.id_table = svia_pci_tbl,
.probe = svia_init_one,
+#ifdef CONFIG_PM
+ .suspend = ata_pci_device_suspend,
+ .resume = ata_pci_device_resume,
+#endif
.remove = ata_pci_remove_one,
};
static struct scsi_host_template svia_sht = {
- .module = THIS_MODULE,
- .name = DRV_NAME,
- .ioctl = ata_scsi_ioctl,
- .queuecommand = ata_scsi_queuecmd,
- .can_queue = ATA_DEF_QUEUE,
- .this_id = ATA_SHT_THIS_ID,
- .sg_tablesize = LIBATA_MAX_PRD,
- .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,
- .slave_destroy = ata_scsi_slave_destroy,
- .bios_param = ata_std_bios_param,
+ ATA_BMDMA_SHT(DRV_NAME),
};
-static const struct ata_port_operations svia_sata_ops = {
- .port_disable = ata_port_disable,
-
- .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,
-
- .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,
- .data_xfer = ata_pio_data_xfer,
-
- .freeze = ata_bmdma_freeze,
- .thaw = ata_bmdma_thaw,
- .error_handler = ata_bmdma_error_handler,
- .post_internal_cmd = ata_bmdma_post_internal_cmd,
+static struct ata_port_operations vt6420_sata_ops = {
+ .inherits = &ata_bmdma_port_ops,
+ .freeze = svia_noop_freeze,
+ .prereset = vt6420_prereset,
+};
- .irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
+static struct ata_port_operations vt6421_pata_ops = {
+ .inherits = &ata_bmdma_port_ops,
+ .cable_detect = vt6421_pata_cable_detect,
+ .set_piomode = vt6421_set_pio_mode,
+ .set_dmamode = vt6421_set_dma_mode,
+};
+static struct ata_port_operations vt6421_sata_ops = {
+ .inherits = &ata_bmdma_port_ops,
.scr_read = svia_scr_read,
.scr_write = svia_scr_write,
+};
- .port_start = ata_port_start,
- .port_stop = ata_port_stop,
- .host_stop = ata_host_stop,
+static const struct ata_port_info vt6420_port_info = {
+ .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
+ .pio_mask = 0x1f,
+ .mwdma_mask = 0x07,
+ .udma_mask = ATA_UDMA6,
+ .port_ops = &vt6420_sata_ops,
};
-static struct ata_port_info svia_port_info = {
- .sht = &svia_sht,
- .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
+static struct ata_port_info vt6421_sport_info = {
+ .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
- .udma_mask = 0x7f,
- .port_ops = &svia_sata_ops,
+ .udma_mask = ATA_UDMA6,
+ .port_ops = &vt6421_sata_ops,
+};
+
+static struct ata_port_info vt6421_pport_info = {
+ .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_LEGACY,
+ .pio_mask = 0x1f,
+ .mwdma_mask = 0,
+ .udma_mask = ATA_UDMA6,
+ .port_ops = &vt6421_pata_ops,
};
MODULE_AUTHOR("Jeff Garzik");
MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
MODULE_VERSION(DRV_VERSION);
-static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg)
+static int svia_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
{
if (sc_reg > SCR_CONTROL)
- return 0xffffffffU;
- return inl(ap->ioaddr.scr_addr + (4 * sc_reg));
+ return -EINVAL;
+ *val = ioread32(ap->ioaddr.scr_addr + (4 * sc_reg));
+ return 0;
}
-static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
+static int svia_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
{
if (sc_reg > SCR_CONTROL)
- return;
- outl(val, ap->ioaddr.scr_addr + (4 * sc_reg));
+ return -EINVAL;
+ iowrite32(val, ap->ioaddr.scr_addr + (4 * sc_reg));
+ return 0;
+}
+
+static void svia_noop_freeze(struct ata_port *ap)
+{
+ /* Some VIA controllers choke if ATA_NIEN is manipulated in
+ * certain way. Leave it alone and just clear pending IRQ.
+ */
+ ata_chk_status(ap);
+ ata_bmdma_irq_clear(ap);
+}
+
+/**
+ * vt6420_prereset - prereset for vt6420
+ * @link: target ATA link
+ * @deadline: deadline jiffies for the operation
+ *
+ * SCR registers on vt6420 are pieces of shit and may hang the
+ * whole machine completely if accessed with the wrong timing.
+ * To avoid such catastrophe, vt6420 doesn't provide generic SCR
+ * access operations, but uses SStatus and SControl only during
+ * boot probing in controlled way.
+ *
+ * As the old (pre EH update) probing code is proven to work, we
+ * strictly follow the access pattern.
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep)
+ *
+ * RETURNS:
+ * 0 on success, -errno otherwise.
+ */
+static int vt6420_prereset(struct ata_link *link, unsigned long deadline)
+{
+ struct ata_port *ap = link->ap;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
+ unsigned long timeout = jiffies + (HZ * 5);
+ u32 sstatus, scontrol;
+ int online;
+
+ /* don't do any SCR stuff if we're not loading */
+ if (!(ap->pflags & ATA_PFLAG_LOADING))
+ goto skip_scr;
+
+ /* Resume phy. This is the old SATA resume sequence */
+ svia_scr_write(ap, SCR_CONTROL, 0x300);
+ svia_scr_read(ap, SCR_CONTROL, &scontrol); /* flush */
+
+ /* wait for phy to become ready, if necessary */
+ do {
+ msleep(200);
+ svia_scr_read(ap, SCR_STATUS, &sstatus);
+ if ((sstatus & 0xf) != 1)
+ break;
+ } while (time_before(jiffies, timeout));
+
+ /* open code sata_print_link_status() */
+ svia_scr_read(ap, SCR_STATUS, &sstatus);
+ svia_scr_read(ap, SCR_CONTROL, &scontrol);
+
+ online = (sstatus & 0xf) == 0x3;
+
+ ata_port_printk(ap, KERN_INFO,
+ "SATA link %s 1.5 Gbps (SStatus %X SControl %X)\n",
+ online ? "up" : "down", sstatus, scontrol);
+
+ /* SStatus is read one more time */
+ svia_scr_read(ap, SCR_STATUS, &sstatus);
+
+ if (!online) {
+ /* tell EH to bail */
+ ehc->i.action &= ~ATA_EH_RESET;
+ return 0;
+ }
+
+ skip_scr:
+ /* wait for !BSY */
+ ata_wait_ready(ap, deadline);
+
+ return 0;
+}
+
+static int vt6421_pata_cable_detect(struct ata_port *ap)
+{
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ u8 tmp;
+
+ pci_read_config_byte(pdev, PATA_UDMA_TIMING, &tmp);
+ if (tmp & 0x10)
+ return ATA_CBL_PATA40;
+ return ATA_CBL_PATA80;
+}
+
+static void vt6421_set_pio_mode(struct ata_port *ap, struct ata_device *adev)
+{
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ static const u8 pio_bits[] = { 0xA8, 0x65, 0x65, 0x31, 0x20 };
+ pci_write_config_byte(pdev, PATA_PIO_TIMING, pio_bits[adev->pio_mode - XFER_PIO_0]);
+}
+
+static void vt6421_set_dma_mode(struct ata_port *ap, struct ata_device *adev)
+{
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ static const u8 udma_bits[] = { 0xEE, 0xE8, 0xE6, 0xE4, 0xE2, 0xE1, 0xE0, 0xE0 };
+ pci_write_config_byte(pdev, PATA_UDMA_TIMING, udma_bits[adev->dma_mode - XFER_UDMA_0]);
}
static const unsigned int svia_bar_sizes[] = {
16, 16, 16, 16, 32, 128
};
-static unsigned long svia_scr_addr(unsigned long addr, unsigned int port)
+static void __iomem *svia_scr_addr(void __iomem *addr, unsigned int port)
{
return addr + (port * 128);
}
-static unsigned long vt6421_scr_addr(unsigned long addr, unsigned int port)
+static void __iomem *vt6421_scr_addr(void __iomem *addr, unsigned int port)
{
return addr + (port * 64);
}
-static void vt6421_init_addrs(struct ata_probe_ent *probe_ent,
- struct pci_dev *pdev,
- unsigned int port)
+static void vt6421_init_addrs(struct ata_port *ap)
{
- unsigned long reg_addr = pci_resource_start(pdev, port);
- unsigned long bmdma_addr = pci_resource_start(pdev, 4) + (port * 8);
- unsigned long scr_addr;
-
- probe_ent->port[port].cmd_addr = reg_addr;
- probe_ent->port[port].altstatus_addr =
- probe_ent->port[port].ctl_addr = (reg_addr + 8) | ATA_PCI_CTL_OFS;
- probe_ent->port[port].bmdma_addr = bmdma_addr;
-
- scr_addr = vt6421_scr_addr(pci_resource_start(pdev, 5), port);
- probe_ent->port[port].scr_addr = scr_addr;
-
- ata_std_ports(&probe_ent->port[port]);
+ void __iomem * const * iomap = ap->host->iomap;
+ void __iomem *reg_addr = iomap[ap->port_no];
+ void __iomem *bmdma_addr = iomap[4] + (ap->port_no * 8);
+ struct ata_ioports *ioaddr = &ap->ioaddr;
+
+ ioaddr->cmd_addr = reg_addr;
+ ioaddr->altstatus_addr =
+ ioaddr->ctl_addr = (void __iomem *)
+ ((unsigned long)(reg_addr + 8) | ATA_PCI_CTL_OFS);
+ ioaddr->bmdma_addr = bmdma_addr;
+ ioaddr->scr_addr = vt6421_scr_addr(iomap[5], ap->port_no);
+
+ ata_std_ports(ioaddr);
+
+ ata_port_pbar_desc(ap, ap->port_no, -1, "port");
+ ata_port_pbar_desc(ap, 4, ap->port_no * 8, "bmdma");
}
-static struct ata_probe_ent *vt6420_init_probe_ent(struct pci_dev *pdev)
+static int vt6420_prepare_host(struct pci_dev *pdev, struct ata_host **r_host)
{
- struct ata_probe_ent *probe_ent;
- struct ata_port_info *ppi = &svia_port_info;
+ const struct ata_port_info *ppi[] = { &vt6420_port_info, NULL };
+ struct ata_host *host;
+ int rc;
- probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
- if (!probe_ent)
- return NULL;
+ rc = ata_pci_prepare_sff_host(pdev, ppi, &host);
+ if (rc)
+ return rc;
+ *r_host = host;
+
+ rc = pcim_iomap_regions(pdev, 1 << 5, DRV_NAME);
+ if (rc) {
+ dev_printk(KERN_ERR, &pdev->dev, "failed to iomap PCI BAR 5\n");
+ return rc;
+ }
- probe_ent->port[0].scr_addr =
- svia_scr_addr(pci_resource_start(pdev, 5), 0);
- probe_ent->port[1].scr_addr =
- svia_scr_addr(pci_resource_start(pdev, 5), 1);
+ host->ports[0]->ioaddr.scr_addr = svia_scr_addr(host->iomap[5], 0);
+ host->ports[1]->ioaddr.scr_addr = svia_scr_addr(host->iomap[5], 1);
- return probe_ent;
+ return 0;
}
-static struct ata_probe_ent *vt6421_init_probe_ent(struct pci_dev *pdev)
+static int vt6421_prepare_host(struct pci_dev *pdev, struct ata_host **r_host)
{
- struct ata_probe_ent *probe_ent;
- unsigned int i;
-
- probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
- if (!probe_ent)
- return NULL;
+ const struct ata_port_info *ppi[] =
+ { &vt6421_sport_info, &vt6421_sport_info, &vt6421_pport_info };
+ struct ata_host *host;
+ int i, rc;
+
+ *r_host = host = ata_host_alloc_pinfo(&pdev->dev, ppi, ARRAY_SIZE(ppi));
+ if (!host) {
+ dev_printk(KERN_ERR, &pdev->dev, "failed to allocate host\n");
+ return -ENOMEM;
+ }
- memset(probe_ent, 0, sizeof(*probe_ent));
- probe_ent->dev = pci_dev_to_dev(pdev);
- INIT_LIST_HEAD(&probe_ent->node);
+ rc = pcim_iomap_regions(pdev, 0x3f, DRV_NAME);
+ if (rc) {
+ dev_printk(KERN_ERR, &pdev->dev, "failed to request/iomap "
+ "PCI BARs (errno=%d)\n", rc);
+ return rc;
+ }
+ host->iomap = pcim_iomap_table(pdev);
- probe_ent->sht = &svia_sht;
- probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY;
- probe_ent->port_ops = &svia_sata_ops;
- probe_ent->n_ports = N_PORTS;
- probe_ent->irq = pdev->irq;
- probe_ent->irq_flags = IRQF_SHARED;
- probe_ent->pio_mask = 0x1f;
- probe_ent->mwdma_mask = 0x07;
- probe_ent->udma_mask = 0x7f;
+ for (i = 0; i < host->n_ports; i++)
+ vt6421_init_addrs(host->ports[i]);
- for (i = 0; i < N_PORTS; i++)
- vt6421_init_addrs(probe_ent, pdev, i);
+ rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
+ if (rc)
+ return rc;
+ rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
+ if (rc)
+ return rc;
- return probe_ent;
+ return 0;
}
static void svia_configure(struct pci_dev *pdev)
if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
dev_printk(KERN_DEBUG, &pdev->dev,
"enabling SATA channels (0x%x)\n",
- (int) tmp8);
+ (int) tmp8);
tmp8 |= ALL_PORTS;
pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
}
if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
dev_printk(KERN_DEBUG, &pdev->dev,
"enabling SATA channel interrupts (0x%x)\n",
- (int) tmp8);
+ (int) tmp8);
tmp8 |= ALL_PORTS;
pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
}
if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
dev_printk(KERN_DEBUG, &pdev->dev,
"enabling SATA channel native mode (0x%x)\n",
- (int) tmp8);
+ (int) tmp8);
tmp8 |= NATIVE_MODE_ALL;
pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
}
}
-static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
+static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
static int printed_version;
unsigned int i;
int rc;
- struct ata_probe_ent *probe_ent;
+ struct ata_host *host;
int board_id = (int) ent->driver_data;
- const int *bar_sizes;
- int pci_dev_busy = 0;
- u8 tmp8;
+ const unsigned *bar_sizes;
if (!printed_version++)
dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
- rc = pci_enable_device(pdev);
+ rc = pcim_enable_device(pdev);
if (rc)
return rc;
- rc = pci_request_regions(pdev, DRV_NAME);
- if (rc) {
- pci_dev_busy = 1;
- goto err_out;
- }
-
- if (board_id == vt6420) {
- pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
- if (tmp8 & SATA_2DEV) {
- dev_printk(KERN_ERR, &pdev->dev,
- "SATA master/slave not supported (0x%x)\n",
- (int) tmp8);
- rc = -EIO;
- goto err_out_regions;
- }
-
+ if (board_id == vt6420)
bar_sizes = &svia_bar_sizes[0];
- } else {
+ else
bar_sizes = &vt6421_bar_sizes[0];
- }
for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
if ((pci_resource_start(pdev, i) == 0) ||
dev_printk(KERN_ERR, &pdev->dev,
"invalid PCI BAR %u (sz 0x%llx, val 0x%llx)\n",
i,
- (unsigned long long)pci_resource_start(pdev, i),
- (unsigned long long)pci_resource_len(pdev, i));
- rc = -ENODEV;
- goto err_out_regions;
+ (unsigned long long)pci_resource_start(pdev, i),
+ (unsigned long long)pci_resource_len(pdev, i));
+ return -ENODEV;
}
- 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;
-
if (board_id == vt6420)
- probe_ent = vt6420_init_probe_ent(pdev);
+ rc = vt6420_prepare_host(pdev, &host);
else
- probe_ent = vt6421_init_probe_ent(pdev);
-
- if (!probe_ent) {
- dev_printk(KERN_ERR, &pdev->dev, "out of memory\n");
- rc = -ENOMEM;
- goto err_out_regions;
- }
+ rc = vt6421_prepare_host(pdev, &host);
+ if (rc)
+ return rc;
svia_configure(pdev);
pci_set_master(pdev);
-
- /* FIXME: check ata_device_add return value */
- ata_device_add(probe_ent);
- kfree(probe_ent);
-
- return 0;
-
-err_out_regions:
- pci_release_regions(pdev);
-err_out:
- if (!pci_dev_busy)
- pci_disable_device(pdev);
- return rc;
+ return ata_host_activate(host, pdev->irq, ata_interrupt, IRQF_SHARED,
+ &svia_sht);
}
static int __init svia_init(void)
module_init(svia_init);
module_exit(svia_exit);
-
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff