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Commit 23700c6b authored by Jeff Garzik's avatar Jeff Garzik
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[libata] fill in a lot more Promise PDC20621 support

parent 402ba7d3
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Showing with 346 additions and 80 deletions
drivers/scsi/sata_promise.c
View file @ 23700c6b
......@@ -41,6 +41,7 @@ enum {
PDC_PRD_TBL = 0x44, /* Direct command DMA table addr */
PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
PDC_HDMA_PKT_SUBMIT = 0x100, /* Host DMA packet pointer addr */
PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
PDC_TBG_MODE = 0x41, /* TBG mode */
PDC_FLASH_CTL = 0x44, /* Flash control register */
......@@ -50,6 +51,12 @@ enum {
PDC_20621_SEQCTL = 0x400,
PDC_20621_SEQMASK = 0x480,
/* chosen, not constant, values; we design our own DIMM mem map */
PDC_20621_DIMM_WINDOW = 0x0C, /* page# for 32K DIMM window */
PDC_20621_DIMM_BASE = 0x00200000,
PDC_20621_HOST_PRD = 64,
PDC_20621_ATA_PRD = 72,
PDC_CHIP0_OFS = 0xC0000, /* offset of chip #0 */
board_2037x = 0, /* FastTrak S150 TX2plus */
......@@ -61,6 +68,8 @@ enum {
struct pdc_port_priv {
u8 prd_buf[ATA_PRD_SZ * ATA_MAX_PRD];
u8 pkt_buf[256];
u8 *pkt;
dma_addr_t pkt_dma;
};
......@@ -74,14 +83,20 @@ static void pdc_sata_set_udmamode (struct ata_port *ap, struct ata_device *adev,
unsigned int udma);
static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
static void pdc_dma_start(struct ata_queued_cmd *qc);
static void pdc20621_dma_start(struct ata_queued_cmd *qc);
static irqreturn_t pdc_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
static irqreturn_t pdc20621_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
static void pdc_eng_timeout(struct ata_port *ap);
static void pdc_20621_phy_reset (struct ata_port *ap);
static int pdc_port_start(struct ata_port *ap);
static void pdc_port_stop(struct ata_port *ap);
static void pdc_fill_sg(struct ata_queued_cmd *qc);
static void pdc20621_fill_sg(struct ata_queued_cmd *qc);
static void pdc_tf_load_mmio(struct ata_port *ap, struct ata_taskfile *tf);
static void pdc_exec_command_mmio(struct ata_port *ap, struct ata_taskfile *tf);
static void pdc20621_host_stop(struct ata_host_set *host_set);
static inline void pdc_dma_complete (struct ata_port *ap,
struct ata_queued_cmd *qc);
static Scsi_Host_Template pdc_sata_sht = {
......@@ -131,12 +146,13 @@ static struct ata_port_operations pdc_20621_ops = {
.exec_command = pdc_exec_command_mmio,
.phy_reset = pdc_20621_phy_reset,
.phy_config = pata_phy_config, /* not a typo */
.bmdma_start = pdc_dma_start,
.fill_sg = pdc_fill_sg,
.bmdma_start = pdc20621_dma_start,
.fill_sg = pdc20621_fill_sg,
.eng_timeout = pdc_eng_timeout,
.irq_handler = pdc_interrupt,
.irq_handler = pdc20621_interrupt,
.port_start = pdc_port_start,
.port_stop = pdc_port_stop,
.host_stop = pdc20621_host_stop,
};
static struct ata_port_info pdc_port_info[] = {
......@@ -182,10 +198,8 @@ static struct pci_device_id pdc_sata_pci_tbl[] = {
board_20319 },
{ PCI_VENDOR_ID_PROMISE, 0x3319, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
board_20319 },
#if 0 /* broken currently */
{ PCI_VENDOR_ID_PROMISE, 0x6622, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
board_20621 },
#endif
{ } /* terminate list */
};
......@@ -198,6 +212,14 @@ static struct pci_driver pdc_sata_pci_driver = {
};
static void pdc20621_host_stop(struct ata_host_set *host_set)
{
void *mmio = host_set->private_data;
assert(mmio != NULL);
iounmap(mmio);
}
static int pdc_port_start(struct ata_port *ap)
{
struct pci_dev *pdev = ap->host_set->pdev;
......@@ -284,6 +306,7 @@ static void pdc_sata_set_udmamode (struct ata_port *ap, struct ata_device *adev,
enum pdc_packet_bits {
PDC_PKT_READ = (1 << 2),
PDC_PKT_NODATA = (1 << 3),
PDC20621_PKT_READ = (1 << 4),
PDC_PKT_SIZEMASK = (1 << 7) | (1 << 6) | (1 << 5),
PDC_PKT_CLEAR_BSY = (1 << 4),
......@@ -293,7 +316,8 @@ enum pdc_packet_bits {
PDC_REG_DEVCTL = (1 << 3) | (1 << 2) | (1 << 1),
};
static inline void pdc_pkt_header(struct ata_taskfile *tf, dma_addr_t sg_table,
static inline unsigned int pdc_pkt_header(struct ata_taskfile *tf,
dma_addr_t sg_table,
unsigned int devno, u8 *buf)
{
u8 dev_reg;
......@@ -335,9 +359,11 @@ static inline void pdc_pkt_header(struct ata_taskfile *tf, dma_addr_t sg_table,
/* device control register */
buf[14] = (1 << 5) | PDC_REG_DEVCTL;
buf[15] = tf->ctl;
return 16; /* offset of next byte */
}
static inline void pdc_pkt_footer(struct ata_taskfile *tf, u8 *buf,
static inline unsigned int pdc_pkt_footer(struct ata_taskfile *tf, u8 *buf,
unsigned int i)
{
if (tf->flags & ATA_TFLAG_DEVICE) {
......@@ -348,19 +374,14 @@ static inline void pdc_pkt_footer(struct ata_taskfile *tf, u8 *buf,
/* and finally the command itself; also includes end-of-pkt marker */
buf[i++] = (1 << 5) | PDC_LAST_REG | ATA_REG_CMD;
buf[i++] = tf->command;
return i;
}
static void pdc_prep_lba28(struct ata_taskfile *tf, dma_addr_t sg_table,
unsigned int devno, u8 *buf)
static inline unsigned int pdc_prep_lba28(struct ata_taskfile *tf, u8 *buf, unsigned int i)
{
unsigned int i;
pdc_pkt_header(tf, sg_table, devno, buf);
/* the "(1 << 5)" should be read "(count << 5)" */
i = 16;
/* ATA command block registers */
buf[i++] = (1 << 5) | ATA_REG_FEATURE;
buf[i++] = tf->feature;
......@@ -377,20 +398,13 @@ static void pdc_prep_lba28(struct ata_taskfile *tf, dma_addr_t sg_table,
buf[i++] = (1 << 5) | ATA_REG_LBAH;
buf[i++] = tf->lbah;
pdc_pkt_footer(tf, buf, i);
return i;
}
static void pdc_prep_lba48(struct ata_taskfile *tf, dma_addr_t sg_table,
unsigned int devno, u8 *buf)
static inline unsigned int pdc_prep_lba48(struct ata_taskfile *tf, u8 *buf, unsigned int i)
{
unsigned int i;
pdc_pkt_header(tf, sg_table, devno, buf);
/* the "(2 << 5)" should be read "(count << 5)" */
i = 16;
/* ATA command block registers */
buf[i++] = (2 << 5) | ATA_REG_FEATURE;
buf[i++] = tf->hob_feature;
......@@ -412,41 +426,299 @@ static void pdc_prep_lba48(struct ata_taskfile *tf, dma_addr_t sg_table,
buf[i++] = tf->hob_lbah;
buf[i++] = tf->lbah;
pdc_pkt_footer(tf, buf, i);
return i;
}
static void pdc_fill_sg(struct ata_queued_cmd *qc)
static inline unsigned int pdc20621_pkt_header(struct ata_taskfile *tf,
unsigned int portno,
unsigned int devno,
u8 *buf,
unsigned int total_len)
{
struct pdc_port_priv *pp = qc->ap->private_data;
u8 dev_reg;
u32 *buf32 = (u32 *) buf;
unsigned int ofs, i = 0;
/*
* Set up Host DMA packet
*/
if (tf->protocol == ATA_PROT_DMA_READ)
buf[i++] = PDC20621_PKT_READ;
else
buf[i++] = 0;
buf[i++] = 0; /* reserved */
buf[i++] = portno + 1 + 4; /* seq. id */
buf[i++] = 0xff; /* delay seq. id */
buf32[i / 4] = cpu_to_le32(PDC_20621_DIMM_BASE + (4 * 1024) +
(2 * 1024 * portno));
i += 4;
buf32[i / 4] = cpu_to_le32(PDC_20621_DIMM_BASE + (portno * 1024) +
PDC_20621_HOST_PRD);
i += 4;
buf32[i / 4] = 0;
i += 4;
ofs = PDC_20621_HOST_PRD / 4;
buf32[ofs] = cpu_to_le32(PDC_20621_DIMM_BASE + (32 * 1024) +
(256 * 1024 * portno));
buf32[ofs + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
/*
* Set up ATA packet
*/
if (tf->protocol == ATA_PROT_DMA_READ)
buf[i++] = PDC_PKT_READ;
else if (tf->protocol == ATA_PROT_NODATA)
buf[i++] = PDC_PKT_NODATA;
else
buf[i++] = 0;
buf[i++] = 0; /* reserved */
buf[i++] = portno + 1; /* seq. id */
buf[i++] = 0xff; /* delay seq. id */
buf32[i / 4] = cpu_to_le32(PDC_20621_DIMM_BASE + (portno * 1024) +
PDC_20621_ATA_PRD);
i += 4;
buf32[i / 4] = 0; /* no next-packet */
i += 4;
ofs = PDC_20621_ATA_PRD / 4;
buf32[ofs] = cpu_to_le32(PDC_20621_DIMM_BASE + (32 * 1024) +
(256 * 1024 * portno));
buf32[ofs + 1] = cpu_to_le32(total_len | ATA_PRD_EOT);
if (devno == 0)
dev_reg = ATA_DEVICE_OBS;
else
dev_reg = ATA_DEVICE_OBS | ATA_DEV1;
/* select device */
buf[i++] = (1 << 5) | PDC_PKT_CLEAR_BSY | ATA_REG_DEVICE;
buf[i++] = dev_reg;
/* device control register */
buf[i++] = (1 << 5) | PDC_REG_DEVCTL;
buf[i++] = tf->ctl;
return i; /* offset of next byte */
}
static void pdc20621_fill_sg(struct ata_queued_cmd *qc)
{
struct scatterlist *sg = qc->sg;
struct ata_port *ap = qc->ap;
struct pdc_port_priv *pp = ap->private_data;
void *dimm_mmio = ap->host_set->private_data;
unsigned int portno = ap->port_no;
unsigned int i, last, idx, total_len = 0;
u32 *buf = (u32 *) &pp->prd_buf;
/*
* Build S/G table
*/
last = qc->n_elem;
idx = 0;
for (i = 0; i < last; i++) {
buf[idx++] = cpu_to_le32(sg[i].dma_address);
buf[idx++] = cpu_to_le32(sg[i].length);
total_len += sg[i].length;
}
idx--;
buf[idx] |= cpu_to_le32(ATA_PRD_EOT);
/*
* Build ATA, host DMA packets
*/
i = pdc20621_pkt_header(&qc->tf, portno, qc->dev->devno,
&pp->pkt_buf[0], total_len);
ata_fill_sg(qc);
if (qc->tf.flags & ATA_TFLAG_LBA48)
pdc_prep_lba48(&qc->tf, qc->ap->prd_dma,
qc->dev->devno, pp->pkt);
i = pdc_prep_lba48(&qc->tf, &pp->pkt_buf[0], i);
else
pdc_prep_lba28(&qc->tf, qc->ap->prd_dma,
qc->dev->devno, pp->pkt);
i = pdc_prep_lba28(&qc->tf, &pp->pkt_buf[0], i);
i = pdc_pkt_footer(&qc->tf, &pp->pkt_buf[0], i);
/* copy two packets and three S/G tables to DIMM MMIO window */
memcpy_toio(dimm_mmio + (portno * 1024), &pp->pkt_buf, i);
memcpy_toio(dimm_mmio + (4 * 1024) + (2 * 1024 * portno),
buf, idx * 4);
}
static inline void __pdc_dma_complete (struct ata_port *ap,
struct ata_queued_cmd *qc)
static void pdc20621_dma_start(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct ata_host_set *host_set = ap->host_set;
unsigned int port_no = ap->port_no;
void *mmio = host_set->mmio_base;
unsigned int rw = (qc->flags & ATA_QCFLAG_WRITE);
u8 seq = (u8) (port_no + 1);
u32 pkt_addr;
unsigned int doing_hdma = 0;
/* hard-code chip #0 */
mmio += PDC_CHIP0_OFS;
VPRINTK("ENTER, ap %p, mmio %p\n", ap, mmio);
/* if writing, we (1) DMA to DIMM, then (2) do ATA command */
if (rw) {
doing_hdma = 1;
seq += 4;
pkt_addr = PDC_20621_DIMM_BASE + (4 * port_no);
}
/* if reading, we (1) do ATA command, then (2) DMA from DIMM */
else {
pkt_addr = PDC_20621_DIMM_BASE + (4 * port_no) + 16;
}
wmb(); /* flush PRD, pkt writes */
writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
if (doing_hdma)
writel(pkt_addr, mmio + PDC_HDMA_PKT_SUBMIT);
else
writel(pkt_addr, (void *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
}
static inline unsigned int pdc20621_host_intr( struct ata_port *ap,
struct ata_queued_cmd *qc,
unsigned int doing_hdma,
void *mmio)
{
unsigned int port_no = ap->port_no;
u8 status;
unsigned int handled = 0;
switch (qc->tf.protocol) {
case ATA_PROT_DMA_READ:
/* step two - DMA from DIMM to host */
if (doing_hdma)
pdc_dma_complete(ap, qc);
/* step one - exec ATA command */
else {
u32 pkt_addr = PDC_20621_DIMM_BASE + (4 * port_no);
u8 seq = (u8) (port_no + 1 + 4);
/* submit hdma pkt */
writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
writel(pkt_addr, mmio + PDC_HDMA_PKT_SUBMIT);
}
handled = 1;
break;
case ATA_PROT_DMA_WRITE:
/* step one - DMA from host to DIMM */
if (doing_hdma) {
u32 pkt_addr = PDC_20621_DIMM_BASE + (4 * port_no) + 16;
u8 seq = (u8) (port_no + 1);
/* submit ata pkt */
writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
writel(pkt_addr, (void *)
ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
/* step two - execute ATA command */
} else
pdc_dma_complete(ap, qc);
handled = 1;
break;
case ATA_PROT_NODATA: /* command completion, but no data xfer */
status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
ata_qc_complete(qc, status, 0);
handled = 1;
break;
default:
ap->stats.idle_irq++;
break;
}
return handled;
}
static irqreturn_t pdc20621_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
{
void *dmactl = (void *) ap->ioaddr.cmd_addr + PDC_CTLSTAT;
u32 val;
struct ata_host_set *host_set = dev_instance;
struct ata_port *ap;
u32 mask = 0;
unsigned int i, tmp, port_no;
unsigned int handled = 0;
void *mmio_base;
VPRINTK("ENTER\n");
if (!host_set || !host_set->mmio_base) {
VPRINTK("QUICK EXIT\n");
return IRQ_NONE;
}
mmio_base = host_set->mmio_base;
/* reading should also clear interrupts */
mmio_base += PDC_CHIP0_OFS;
mask = readl(mmio_base + PDC_20621_SEQMASK);
if (mask == 0xffffffff) {
VPRINTK("QUICK EXIT 2\n");
return IRQ_NONE;
}
mask &= 0xf; /* only 16 tags possible */
if (!mask) {
VPRINTK("QUICK EXIT 3\n");
return IRQ_NONE;
}
/* clear DMA start/stop bit (bit 7) */
val = readl(dmactl);
writel(val & ~(1 << 7), dmactl);
spin_lock_irq(&host_set->lock);
/* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
ata_altstatus(ap); /* dummy read */
for (i = 1; i < 9; i++) {
VPRINTK("port %u\n", port_no);
port_no = i - 1;
if (port_no > 3)
port_no -= 4;
if (port_no >= host_set->n_ports)
ap = NULL;
else
ap = host_set->ports[port_no];
tmp = mask & (1 << i);
if (tmp && ap && (!(ap->flags & ATA_FLAG_PORT_DISABLED))) {
struct ata_queued_cmd *qc;
qc = ata_qc_from_tag(ap, ap->active_tag);
if (qc && ((qc->flags & ATA_QCFLAG_POLL) == 0))
handled += pdc20621_host_intr(ap, qc, (i > 4),
mmio_base);
}
}
spin_unlock_irq(&host_set->lock);
VPRINTK("EXIT\n");
return IRQ_RETVAL(handled);
}
static void pdc_fill_sg(struct ata_queued_cmd *qc)
{
struct pdc_port_priv *pp = qc->ap->private_data;
unsigned int i;
ata_fill_sg(qc);
i = pdc_pkt_header(&qc->tf, qc->ap->prd_dma, qc->dev->devno, pp->pkt);
if (qc->tf.flags & ATA_TFLAG_LBA48)
i = pdc_prep_lba48(&qc->tf, pp->pkt, i);
else
i = pdc_prep_lba28(&qc->tf, pp->pkt, i);
pdc_pkt_footer(&qc->tf, pp->pkt, i);
}
static inline void pdc_dma_complete (struct ata_port *ap,
struct ata_queued_cmd *qc)
{
__pdc_dma_complete(ap, qc);
/* get drive status; clear intr; complete txn */
ata_qc_complete(ata_qc_from_tag(ap, ap->active_tag),
ata_wait_idle(ap), 0);
......@@ -470,7 +742,6 @@ static void pdc_eng_timeout(struct ata_port *ap)
case ATA_PROT_DMA_READ:
case ATA_PROT_DMA_WRITE:
printk(KERN_ERR "ata%u: DMA timeout\n", ap->id);
__pdc_dma_complete(ap, qc);
ata_qc_complete(ata_qc_from_tag(ap, ap->active_tag),
ata_wait_idle(ap) | ATA_ERR, 0);
break;
......@@ -532,7 +803,7 @@ static irqreturn_t pdc_interrupt (int irq, void *dev_instance, struct pt_regs *r
struct ata_port *ap;
u32 mask = 0;
unsigned int i, tmp;
unsigned int handled = 0, have_20621 = 0;
unsigned int handled = 0;
void *mmio_base;
VPRINTK("ENTER\n");
......@@ -544,21 +815,8 @@ static irqreturn_t pdc_interrupt (int irq, void *dev_instance, struct pt_regs *r
mmio_base = host_set->mmio_base;
for (i = 0; i < host_set->n_ports; i++) {
ap = host_set->ports[i];
if (ap && (ap->flags & PDC_FLAG_20621)) {
have_20621 = 1;
break;
}
}
/* reading should also clear interrupts */
if (have_20621) {
mmio_base += PDC_CHIP0_OFS;
mask = readl(mmio_base + PDC_20621_SEQMASK);
} else {
mask = readl(mmio_base + PDC_INT_SEQMASK);
}
if (mask == 0xffffffff) {
VPRINTK("QUICK EXIT 2\n");
......@@ -596,20 +854,12 @@ static void pdc_dma_start(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct pdc_port_priv *pp = ap->private_data;
struct ata_host_set *host_set = ap->host_set;
unsigned int port_no = ap->port_no;
void *mmio = host_set->mmio_base;
u8 seq = (u8) (port_no + 1);
if (ap->flags & PDC_FLAG_20621)
mmio += PDC_CHIP0_OFS;
VPRINTK("ENTER, ap %p\n", ap);
VPRINTK("ENTER, ap %p, mmio %p\n", ap, mmio);
if (ap->flags & PDC_FLAG_20621)
writel(0x00000001, mmio + PDC_20621_SEQCTL + (seq * 4));
else
writel(0x00000001, mmio + (seq * 4));
writel(0x00000001, ap->host_set->mmio_base + (seq * 4));
pp->pkt[2] = seq;
wmb(); /* flush PRD, pkt writes */
......@@ -648,6 +898,14 @@ static void pdc_sata_setup_port(struct ata_ioports *port, unsigned long base)
static void pdc_20621_init(struct ata_probe_ent *pe)
{
u32 tmp;
void *mmio = pe->mmio_base;
mmio += PDC_CHIP0_OFS;
tmp = readl(mmio + PDC_20621_DIMM_WINDOW) & 0xffff0000;
tmp |= 0x40; /* page 40h; arbitrarily selected */
writel(tmp, mmio + PDC_20621_DIMM_WINDOW);
}
static void pdc_host_init(unsigned int chip_id, struct ata_probe_ent *pe)
......@@ -691,8 +949,9 @@ static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *
static int printed_version;
struct ata_probe_ent *probe_ent = NULL;
unsigned long base;
void *mmio_base;
void *mmio_base, *dimm_mmio = NULL;
unsigned int board_idx = (unsigned int) ent->driver_data;
unsigned int have_20621 = (board_idx == board_20621);
int rc;
if (!printed_version++)
......@@ -732,6 +991,15 @@ static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *
}
base = (unsigned long) mmio_base;
if (have_20621) {
dimm_mmio = ioremap(pci_resource_start(pdev, 4),
pci_resource_len(pdev, 4));
if (!dimm_mmio) {
rc = -ENOMEM;
goto err_out_iounmap;
}
}
probe_ent->sht = pdc_port_info[board_idx].sht;
probe_ent->host_flags = pdc_port_info[board_idx].host_flags;
probe_ent->pio_mask = pdc_port_info[board_idx].pio_mask;
......@@ -742,8 +1010,10 @@ static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *
probe_ent->irq_flags = SA_SHIRQ;
probe_ent->mmio_base = mmio_base;
if (board_idx == board_20621)
if (have_20621) {
probe_ent->private_data = dimm_mmio;
base += PDC_CHIP0_OFS;
}
pdc_sata_setup_port(&probe_ent->port[0], base + 0x200);
probe_ent->port[0].scr_addr = base + 0x400;
......@@ -774,15 +1044,10 @@ static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *
pci_set_master(pdev);
/* initialize adapter */
switch (board_idx) {
case board_20621:
if (have_20621)
pdc_20621_init(probe_ent);
break;
default:
else
pdc_host_init(board_idx, probe_ent);
break;
}
/* FIXME: check ata_device_add return value */
ata_device_add(probe_ent);
......@@ -790,6 +1055,8 @@ static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *
return 0;
err_out_iounmap:
iounmap(mmio_base);
err_out_free_ent:
kfree(probe_ent);
err_out_regions:
......@@ -800,7 +1067,6 @@ static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *
}
static int __init pdc_sata_init(void)
{
int rc;
......
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