Commit eca25dca authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik

libata: convert drivers with combined SATA/PATA ports to new init model

Convert sata_via and sata_promise to new init model.  Both controllers
can have combined configuration (SATA + PATA) and used twisted
initialization method (modifying port in ->port_start) to overcome
probe_ent limitations.

This patch converts both drivers to new init model in which such
configuration is natively supported.

* promise: Combined pata port now uses separate port_info entry right
  after the sata counterpart entry.

* promise: Controller configuration is discerned using ap->flags.
  This simplifies init path and makes it look more like other LLDs.

* via: Both SATA and PATA ports in vt6421 are represented in their
  own port_info structure.

Tested on PDC20375 (SATA150 TX2plus) [105a:3375] and PDC40775 (SATA
300 TX2plus) [105a:3d73].  Couldn't test via cuz my c3 won't boot the
current kernel.
Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 21b0ad4f
This diff is collapsed.
......@@ -64,8 +64,6 @@ enum {
PORT0 = (1 << 1),
PORT1 = (1 << 0),
ALL_PORTS = PORT0 | PORT1,
PATA_PORT = 2, /* PATA is port 2 */
N_PORTS = 3,
NATIVE_MODE_ALL = (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),
......@@ -81,7 +79,6 @@ static void vt6420_error_handler(struct ata_port *ap);
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 int vt6421_port_start(struct ata_port *ap);
static const struct pci_device_id svia_pci_tbl[] = {
{ PCI_VDEVICE(VIA, 0x5337), vt6420 },
......@@ -140,7 +137,6 @@ static const struct ata_port_operations vt6420_sata_ops = {
.error_handler = vt6420_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.irq_ack = ata_irq_ack,
......@@ -175,12 +171,11 @@ static const struct ata_port_operations vt6421_pata_ops = {
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = vt6421_pata_cable_detect,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.irq_ack = ata_irq_ack,
.port_start = vt6421_port_start,
.port_start = ata_port_start,
};
static const struct ata_port_operations vt6421_sata_ops = {
......@@ -207,7 +202,6 @@ static const struct ata_port_operations vt6421_sata_ops = {
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = ata_cable_sata,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.irq_ack = ata_irq_ack,
......@@ -215,11 +209,10 @@ static const struct ata_port_operations vt6421_sata_ops = {
.scr_read = svia_scr_read,
.scr_write = svia_scr_write,
.port_start = vt6421_port_start,
.port_start = ata_port_start,
};
static struct ata_port_info vt6420_port_info = {
.sht = &svia_sht,
static const struct ata_port_info vt6420_port_info = {
.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
......@@ -227,6 +220,22 @@ static struct ata_port_info vt6420_port_info = {
.port_ops = &vt6420_sata_ops,
};
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 = &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 = 0x7f,
.port_ops = &vt6421_pata_ops,
};
MODULE_AUTHOR("Jeff Garzik");
MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
MODULE_LICENSE("GPL");
......@@ -356,16 +365,6 @@ static void vt6421_set_dma_mode(struct ata_port *ap, struct ata_device *adev)
pci_write_config_byte(pdev, PATA_UDMA_TIMING, udma_bits[adev->pio_mode - XFER_UDMA_0]);
}
static int vt6421_port_start(struct ata_port *ap)
{
if (ap->port_no == PATA_PORT) {
ap->ops = &vt6421_pata_ops;
ap->mwdma_mask = 0;
ap->flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST;
}
return ata_port_start(ap);
}
static const unsigned int svia_bar_sizes[] = {
8, 4, 8, 4, 16, 256
};
......@@ -384,79 +383,78 @@ 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,
void __iomem * const *iomap, unsigned int port)
static void vt6421_init_addrs(struct ata_port *ap)
{
void __iomem *reg_addr = iomap[port];
void __iomem *bmdma_addr = iomap[4] + (port * 8);
probe_ent->port[port].cmd_addr = reg_addr;
probe_ent->port[port].altstatus_addr =
probe_ent->port[port].ctl_addr = (void __iomem *)
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);
probe_ent->port[port].bmdma_addr = bmdma_addr;
probe_ent->port[port].scr_addr = vt6421_scr_addr(iomap[5], port);
ioaddr->bmdma_addr = bmdma_addr;
ioaddr->scr_addr = vt6421_scr_addr(iomap[5], ap->port_no);
ata_std_ports(&probe_ent->port[port]);
ata_std_ports(ioaddr);
}
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[2];
void __iomem *bar5;
const struct ata_port_info *ppi[] = { &vt6420_port_info, NULL };
struct ata_host *host;
int rc;
ppi[0] = ppi[1] = &vt6420_port_info;
probe_ent = ata_pci_init_native_mode(pdev, ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
if (!probe_ent)
return NULL;
rc = ata_pci_prepare_native_host(pdev, ppi, 2, &host);
if (rc)
return rc;
*r_host = host;
bar5 = pcim_iomap(pdev, 5, 0);
if (!bar5) {
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 NULL;
return rc;
}
probe_ent->port[0].scr_addr = svia_scr_addr(bar5, 0);
probe_ent->port[1].scr_addr = svia_scr_addr(bar5, 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;
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;
}
probe_ent = devm_kzalloc(&pdev->dev, sizeof(*probe_ent), GFP_KERNEL);
if (!probe_ent)
return NULL;
memset(probe_ent, 0, sizeof(*probe_ent));
probe_ent->dev = pci_dev_to_dev(pdev);
INIT_LIST_HEAD(&probe_ent->node);
probe_ent->sht = &svia_sht;
probe_ent->port_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY;
probe_ent->port_ops = &vt6421_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 < 6; i++)
if (!pcim_iomap(pdev, i, 0)) {
dev_printk(KERN_ERR, &pdev->dev,
"failed to iomap PCI BAR %d\n", i);
return NULL;
}
rc = pcim_iomap_regions(pdev, 0x1f, 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);
for (i = 0; i < N_PORTS; i++)
vt6421_init_addrs(probe_ent, pcim_iomap_table(pdev), i);
for (i = 0; i < host->n_ports; i++)
vt6421_init_addrs(host->ports[i]);
return probe_ent;
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 0;
}
static void svia_configure(struct pci_dev *pdev)
......@@ -503,7 +501,7 @@ 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;
u8 tmp8;
......@@ -515,12 +513,6 @@ static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
if (rc)
return rc;
rc = pci_request_regions(pdev, DRV_NAME);
if (rc) {
pcim_pin_device(pdev);
return rc;
}
if (board_id == vt6420) {
pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
if (tmp8 & SATA_2DEV) {
......@@ -546,32 +538,18 @@ static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
return -ENODEV;
}
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;
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");
return -ENOMEM;
}
rc = vt6421_prepare_host(pdev, &host);
if (rc)
return rc;
svia_configure(pdev);
pci_set_master(pdev);
if (!ata_device_add(probe_ent))
return -ENODEV;
devm_kfree(&pdev->dev, probe_ent);
return 0;
return ata_host_activate(host, pdev->irq, ata_interrupt, IRQF_SHARED,
&svia_sht);
}
static int __init svia_init(void)
......
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