mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-22 00:40:03 +00:00
![Paul Gortmaker](/assets/img/avatar_default.png)
None of these files are actually using any __init type directives and hence don't need to include <linux/init.h>. Most are just a left over from __devinit and __cpuinit removal, or simply due to code getting copied from one driver to the next. Cc: linux-ide@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Tejun Heo <tj@kernel.org>
1268 lines
34 KiB
C
1268 lines
34 KiB
C
/*
|
|
* sata_promise.c - Promise SATA
|
|
*
|
|
* Maintained by: Tejun Heo <tj@kernel.org>
|
|
* Mikael Pettersson
|
|
* Please ALWAYS copy linux-ide@vger.kernel.org
|
|
* on emails.
|
|
*
|
|
* Copyright 2003-2004 Red Hat, Inc.
|
|
*
|
|
*
|
|
* 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.*
|
|
*
|
|
* Hardware information only available under NDA.
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/gfp.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/device.h>
|
|
#include <scsi/scsi.h>
|
|
#include <scsi/scsi_host.h>
|
|
#include <scsi/scsi_cmnd.h>
|
|
#include <linux/libata.h>
|
|
#include "sata_promise.h"
|
|
|
|
#define DRV_NAME "sata_promise"
|
|
#define DRV_VERSION "2.12"
|
|
|
|
enum {
|
|
PDC_MAX_PORTS = 4,
|
|
PDC_MMIO_BAR = 3,
|
|
PDC_MAX_PRD = LIBATA_MAX_PRD - 1, /* -1 for ASIC PRD bug workaround */
|
|
|
|
/* host register offsets (from host->iomap[PDC_MMIO_BAR]) */
|
|
PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
|
|
PDC_FLASH_CTL = 0x44, /* Flash control register */
|
|
PDC_PCI_CTL = 0x48, /* PCI control/status reg */
|
|
PDC_SATA_PLUG_CSR = 0x6C, /* SATA Plug control/status reg */
|
|
PDC2_SATA_PLUG_CSR = 0x60, /* SATAII Plug control/status reg */
|
|
PDC_TBG_MODE = 0x41C, /* TBG mode (not SATAII) */
|
|
PDC_SLEW_CTL = 0x470, /* slew rate control reg (not SATAII) */
|
|
|
|
/* per-port ATA register offsets (from ap->ioaddr.cmd_addr) */
|
|
PDC_FEATURE = 0x04, /* Feature/Error reg (per port) */
|
|
PDC_SECTOR_COUNT = 0x08, /* Sector count reg (per port) */
|
|
PDC_SECTOR_NUMBER = 0x0C, /* Sector number reg (per port) */
|
|
PDC_CYLINDER_LOW = 0x10, /* Cylinder low reg (per port) */
|
|
PDC_CYLINDER_HIGH = 0x14, /* Cylinder high reg (per port) */
|
|
PDC_DEVICE = 0x18, /* Device/Head reg (per port) */
|
|
PDC_COMMAND = 0x1C, /* Command/status reg (per port) */
|
|
PDC_ALTSTATUS = 0x38, /* Alternate-status/device-control reg (per port) */
|
|
PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
|
|
PDC_GLOBAL_CTL = 0x48, /* Global control/status (per port) */
|
|
PDC_CTLSTAT = 0x60, /* IDE control and status (per port) */
|
|
|
|
/* per-port SATA register offsets (from ap->ioaddr.scr_addr) */
|
|
PDC_SATA_ERROR = 0x04,
|
|
PDC_PHYMODE4 = 0x14,
|
|
PDC_LINK_LAYER_ERRORS = 0x6C,
|
|
PDC_FPDMA_CTLSTAT = 0xD8,
|
|
PDC_INTERNAL_DEBUG_1 = 0xF8, /* also used for PATA */
|
|
PDC_INTERNAL_DEBUG_2 = 0xFC, /* also used for PATA */
|
|
|
|
/* PDC_FPDMA_CTLSTAT bit definitions */
|
|
PDC_FPDMA_CTLSTAT_RESET = 1 << 3,
|
|
PDC_FPDMA_CTLSTAT_DMASETUP_INT_FLAG = 1 << 10,
|
|
PDC_FPDMA_CTLSTAT_SETDB_INT_FLAG = 1 << 11,
|
|
|
|
/* PDC_GLOBAL_CTL bit definitions */
|
|
PDC_PH_ERR = (1 << 8), /* PCI error while loading packet */
|
|
PDC_SH_ERR = (1 << 9), /* PCI error while loading S/G table */
|
|
PDC_DH_ERR = (1 << 10), /* PCI error while loading data */
|
|
PDC2_HTO_ERR = (1 << 12), /* host bus timeout */
|
|
PDC2_ATA_HBA_ERR = (1 << 13), /* error during SATA DATA FIS transmission */
|
|
PDC2_ATA_DMA_CNT_ERR = (1 << 14), /* DMA DATA FIS size differs from S/G count */
|
|
PDC_OVERRUN_ERR = (1 << 19), /* S/G byte count larger than HD requires */
|
|
PDC_UNDERRUN_ERR = (1 << 20), /* S/G byte count less than HD requires */
|
|
PDC_DRIVE_ERR = (1 << 21), /* drive error */
|
|
PDC_PCI_SYS_ERR = (1 << 22), /* PCI system error */
|
|
PDC1_PCI_PARITY_ERR = (1 << 23), /* PCI parity error (from SATA150 driver) */
|
|
PDC1_ERR_MASK = PDC1_PCI_PARITY_ERR,
|
|
PDC2_ERR_MASK = PDC2_HTO_ERR | PDC2_ATA_HBA_ERR |
|
|
PDC2_ATA_DMA_CNT_ERR,
|
|
PDC_ERR_MASK = PDC_PH_ERR | PDC_SH_ERR | PDC_DH_ERR |
|
|
PDC_OVERRUN_ERR | PDC_UNDERRUN_ERR |
|
|
PDC_DRIVE_ERR | PDC_PCI_SYS_ERR |
|
|
PDC1_ERR_MASK | PDC2_ERR_MASK,
|
|
|
|
board_2037x = 0, /* FastTrak S150 TX2plus */
|
|
board_2037x_pata = 1, /* FastTrak S150 TX2plus PATA port */
|
|
board_20319 = 2, /* FastTrak S150 TX4 */
|
|
board_20619 = 3, /* FastTrak TX4000 */
|
|
board_2057x = 4, /* SATAII150 Tx2plus */
|
|
board_2057x_pata = 5, /* SATAII150 Tx2plus PATA port */
|
|
board_40518 = 6, /* SATAII150 Tx4 */
|
|
|
|
PDC_HAS_PATA = (1 << 1), /* PDC20375/20575 has PATA */
|
|
|
|
/* Sequence counter control registers bit definitions */
|
|
PDC_SEQCNTRL_INT_MASK = (1 << 5), /* Sequence Interrupt Mask */
|
|
|
|
/* Feature register values */
|
|
PDC_FEATURE_ATAPI_PIO = 0x00, /* ATAPI data xfer by PIO */
|
|
PDC_FEATURE_ATAPI_DMA = 0x01, /* ATAPI data xfer by DMA */
|
|
|
|
/* Device/Head register values */
|
|
PDC_DEVICE_SATA = 0xE0, /* Device/Head value for SATA devices */
|
|
|
|
/* PDC_CTLSTAT bit definitions */
|
|
PDC_DMA_ENABLE = (1 << 7),
|
|
PDC_IRQ_DISABLE = (1 << 10),
|
|
PDC_RESET = (1 << 11), /* HDMA reset */
|
|
|
|
PDC_COMMON_FLAGS = ATA_FLAG_PIO_POLLING,
|
|
|
|
/* ap->flags bits */
|
|
PDC_FLAG_GEN_II = (1 << 24),
|
|
PDC_FLAG_SATA_PATA = (1 << 25), /* supports SATA + PATA */
|
|
PDC_FLAG_4_PORTS = (1 << 26), /* 4 ports */
|
|
};
|
|
|
|
struct pdc_port_priv {
|
|
u8 *pkt;
|
|
dma_addr_t pkt_dma;
|
|
};
|
|
|
|
struct pdc_host_priv {
|
|
spinlock_t hard_reset_lock;
|
|
};
|
|
|
|
static int pdc_sata_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
|
|
static int pdc_sata_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
|
|
static int pdc_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
|
|
static int pdc_common_port_start(struct ata_port *ap);
|
|
static int pdc_sata_port_start(struct ata_port *ap);
|
|
static void pdc_qc_prep(struct ata_queued_cmd *qc);
|
|
static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
|
|
static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
|
|
static int pdc_check_atapi_dma(struct ata_queued_cmd *qc);
|
|
static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc);
|
|
static void pdc_irq_clear(struct ata_port *ap);
|
|
static unsigned int pdc_qc_issue(struct ata_queued_cmd *qc);
|
|
static void pdc_freeze(struct ata_port *ap);
|
|
static void pdc_sata_freeze(struct ata_port *ap);
|
|
static void pdc_thaw(struct ata_port *ap);
|
|
static void pdc_sata_thaw(struct ata_port *ap);
|
|
static int pdc_pata_softreset(struct ata_link *link, unsigned int *class,
|
|
unsigned long deadline);
|
|
static int pdc_sata_hardreset(struct ata_link *link, unsigned int *class,
|
|
unsigned long deadline);
|
|
static void pdc_error_handler(struct ata_port *ap);
|
|
static void pdc_post_internal_cmd(struct ata_queued_cmd *qc);
|
|
static int pdc_pata_cable_detect(struct ata_port *ap);
|
|
static int pdc_sata_cable_detect(struct ata_port *ap);
|
|
|
|
static struct scsi_host_template pdc_ata_sht = {
|
|
ATA_BASE_SHT(DRV_NAME),
|
|
.sg_tablesize = PDC_MAX_PRD,
|
|
.dma_boundary = ATA_DMA_BOUNDARY,
|
|
};
|
|
|
|
static const struct ata_port_operations pdc_common_ops = {
|
|
.inherits = &ata_sff_port_ops,
|
|
|
|
.sff_tf_load = pdc_tf_load_mmio,
|
|
.sff_exec_command = pdc_exec_command_mmio,
|
|
.check_atapi_dma = pdc_check_atapi_dma,
|
|
.qc_prep = pdc_qc_prep,
|
|
.qc_issue = pdc_qc_issue,
|
|
|
|
.sff_irq_clear = pdc_irq_clear,
|
|
.lost_interrupt = ATA_OP_NULL,
|
|
|
|
.post_internal_cmd = pdc_post_internal_cmd,
|
|
.error_handler = pdc_error_handler,
|
|
};
|
|
|
|
static struct ata_port_operations pdc_sata_ops = {
|
|
.inherits = &pdc_common_ops,
|
|
.cable_detect = pdc_sata_cable_detect,
|
|
.freeze = pdc_sata_freeze,
|
|
.thaw = pdc_sata_thaw,
|
|
.scr_read = pdc_sata_scr_read,
|
|
.scr_write = pdc_sata_scr_write,
|
|
.port_start = pdc_sata_port_start,
|
|
.hardreset = pdc_sata_hardreset,
|
|
};
|
|
|
|
/* First-generation chips need a more restrictive ->check_atapi_dma op,
|
|
and ->freeze/thaw that ignore the hotplug controls. */
|
|
static struct ata_port_operations pdc_old_sata_ops = {
|
|
.inherits = &pdc_sata_ops,
|
|
.freeze = pdc_freeze,
|
|
.thaw = pdc_thaw,
|
|
.check_atapi_dma = pdc_old_sata_check_atapi_dma,
|
|
};
|
|
|
|
static struct ata_port_operations pdc_pata_ops = {
|
|
.inherits = &pdc_common_ops,
|
|
.cable_detect = pdc_pata_cable_detect,
|
|
.freeze = pdc_freeze,
|
|
.thaw = pdc_thaw,
|
|
.port_start = pdc_common_port_start,
|
|
.softreset = pdc_pata_softreset,
|
|
};
|
|
|
|
static const struct ata_port_info pdc_port_info[] = {
|
|
[board_2037x] =
|
|
{
|
|
.flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
|
|
PDC_FLAG_SATA_PATA,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &pdc_old_sata_ops,
|
|
},
|
|
|
|
[board_2037x_pata] =
|
|
{
|
|
.flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &pdc_pata_ops,
|
|
},
|
|
|
|
[board_20319] =
|
|
{
|
|
.flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
|
|
PDC_FLAG_4_PORTS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &pdc_old_sata_ops,
|
|
},
|
|
|
|
[board_20619] =
|
|
{
|
|
.flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS |
|
|
PDC_FLAG_4_PORTS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &pdc_pata_ops,
|
|
},
|
|
|
|
[board_2057x] =
|
|
{
|
|
.flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
|
|
PDC_FLAG_GEN_II | PDC_FLAG_SATA_PATA,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &pdc_sata_ops,
|
|
},
|
|
|
|
[board_2057x_pata] =
|
|
{
|
|
.flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS |
|
|
PDC_FLAG_GEN_II,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &pdc_pata_ops,
|
|
},
|
|
|
|
[board_40518] =
|
|
{
|
|
.flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
|
|
PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &pdc_sata_ops,
|
|
},
|
|
};
|
|
|
|
static const struct pci_device_id pdc_ata_pci_tbl[] = {
|
|
{ PCI_VDEVICE(PROMISE, 0x3371), board_2037x },
|
|
{ PCI_VDEVICE(PROMISE, 0x3373), board_2037x },
|
|
{ PCI_VDEVICE(PROMISE, 0x3375), board_2037x },
|
|
{ PCI_VDEVICE(PROMISE, 0x3376), board_2037x },
|
|
{ PCI_VDEVICE(PROMISE, 0x3570), board_2057x },
|
|
{ PCI_VDEVICE(PROMISE, 0x3571), board_2057x },
|
|
{ PCI_VDEVICE(PROMISE, 0x3574), board_2057x },
|
|
{ PCI_VDEVICE(PROMISE, 0x3577), board_2057x },
|
|
{ PCI_VDEVICE(PROMISE, 0x3d73), board_2057x },
|
|
{ PCI_VDEVICE(PROMISE, 0x3d75), board_2057x },
|
|
|
|
{ PCI_VDEVICE(PROMISE, 0x3318), board_20319 },
|
|
{ PCI_VDEVICE(PROMISE, 0x3319), board_20319 },
|
|
{ PCI_VDEVICE(PROMISE, 0x3515), board_40518 },
|
|
{ PCI_VDEVICE(PROMISE, 0x3519), board_40518 },
|
|
{ PCI_VDEVICE(PROMISE, 0x3d17), board_40518 },
|
|
{ PCI_VDEVICE(PROMISE, 0x3d18), board_40518 },
|
|
|
|
{ PCI_VDEVICE(PROMISE, 0x6629), board_20619 },
|
|
|
|
{ } /* terminate list */
|
|
};
|
|
|
|
static struct pci_driver pdc_ata_pci_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = pdc_ata_pci_tbl,
|
|
.probe = pdc_ata_init_one,
|
|
.remove = ata_pci_remove_one,
|
|
};
|
|
|
|
static int pdc_common_port_start(struct ata_port *ap)
|
|
{
|
|
struct device *dev = ap->host->dev;
|
|
struct pdc_port_priv *pp;
|
|
int rc;
|
|
|
|
/* we use the same prd table as bmdma, allocate it */
|
|
rc = ata_bmdma_port_start(ap);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
|
|
if (!pp)
|
|
return -ENOMEM;
|
|
|
|
pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
|
|
if (!pp->pkt)
|
|
return -ENOMEM;
|
|
|
|
ap->private_data = pp;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pdc_sata_port_start(struct ata_port *ap)
|
|
{
|
|
int rc;
|
|
|
|
rc = pdc_common_port_start(ap);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* fix up PHYMODE4 align timing */
|
|
if (ap->flags & PDC_FLAG_GEN_II) {
|
|
void __iomem *sata_mmio = ap->ioaddr.scr_addr;
|
|
unsigned int tmp;
|
|
|
|
tmp = readl(sata_mmio + PDC_PHYMODE4);
|
|
tmp = (tmp & ~3) | 1; /* set bits 1:0 = 0:1 */
|
|
writel(tmp, sata_mmio + PDC_PHYMODE4);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pdc_fpdma_clear_interrupt_flag(struct ata_port *ap)
|
|
{
|
|
void __iomem *sata_mmio = ap->ioaddr.scr_addr;
|
|
u32 tmp;
|
|
|
|
tmp = readl(sata_mmio + PDC_FPDMA_CTLSTAT);
|
|
tmp |= PDC_FPDMA_CTLSTAT_DMASETUP_INT_FLAG;
|
|
tmp |= PDC_FPDMA_CTLSTAT_SETDB_INT_FLAG;
|
|
|
|
/* It's not allowed to write to the entire FPDMA_CTLSTAT register
|
|
when NCQ is running. So do a byte-sized write to bits 10 and 11. */
|
|
writeb(tmp >> 8, sata_mmio + PDC_FPDMA_CTLSTAT + 1);
|
|
readb(sata_mmio + PDC_FPDMA_CTLSTAT + 1); /* flush */
|
|
}
|
|
|
|
static void pdc_fpdma_reset(struct ata_port *ap)
|
|
{
|
|
void __iomem *sata_mmio = ap->ioaddr.scr_addr;
|
|
u8 tmp;
|
|
|
|
tmp = (u8)readl(sata_mmio + PDC_FPDMA_CTLSTAT);
|
|
tmp &= 0x7F;
|
|
tmp |= PDC_FPDMA_CTLSTAT_RESET;
|
|
writeb(tmp, sata_mmio + PDC_FPDMA_CTLSTAT);
|
|
readl(sata_mmio + PDC_FPDMA_CTLSTAT); /* flush */
|
|
udelay(100);
|
|
tmp &= ~PDC_FPDMA_CTLSTAT_RESET;
|
|
writeb(tmp, sata_mmio + PDC_FPDMA_CTLSTAT);
|
|
readl(sata_mmio + PDC_FPDMA_CTLSTAT); /* flush */
|
|
|
|
pdc_fpdma_clear_interrupt_flag(ap);
|
|
}
|
|
|
|
static void pdc_not_at_command_packet_phase(struct ata_port *ap)
|
|
{
|
|
void __iomem *sata_mmio = ap->ioaddr.scr_addr;
|
|
unsigned int i;
|
|
u32 tmp;
|
|
|
|
/* check not at ASIC packet command phase */
|
|
for (i = 0; i < 100; ++i) {
|
|
writel(0, sata_mmio + PDC_INTERNAL_DEBUG_1);
|
|
tmp = readl(sata_mmio + PDC_INTERNAL_DEBUG_2);
|
|
if ((tmp & 0xF) != 1)
|
|
break;
|
|
udelay(100);
|
|
}
|
|
}
|
|
|
|
static void pdc_clear_internal_debug_record_error_register(struct ata_port *ap)
|
|
{
|
|
void __iomem *sata_mmio = ap->ioaddr.scr_addr;
|
|
|
|
writel(0xffffffff, sata_mmio + PDC_SATA_ERROR);
|
|
writel(0xffff0000, sata_mmio + PDC_LINK_LAYER_ERRORS);
|
|
}
|
|
|
|
static void pdc_reset_port(struct ata_port *ap)
|
|
{
|
|
void __iomem *ata_ctlstat_mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT;
|
|
unsigned int i;
|
|
u32 tmp;
|
|
|
|
if (ap->flags & PDC_FLAG_GEN_II)
|
|
pdc_not_at_command_packet_phase(ap);
|
|
|
|
tmp = readl(ata_ctlstat_mmio);
|
|
tmp |= PDC_RESET;
|
|
writel(tmp, ata_ctlstat_mmio);
|
|
|
|
for (i = 11; i > 0; i--) {
|
|
tmp = readl(ata_ctlstat_mmio);
|
|
if (tmp & PDC_RESET)
|
|
break;
|
|
|
|
udelay(100);
|
|
|
|
tmp |= PDC_RESET;
|
|
writel(tmp, ata_ctlstat_mmio);
|
|
}
|
|
|
|
tmp &= ~PDC_RESET;
|
|
writel(tmp, ata_ctlstat_mmio);
|
|
readl(ata_ctlstat_mmio); /* flush */
|
|
|
|
if (sata_scr_valid(&ap->link) && (ap->flags & PDC_FLAG_GEN_II)) {
|
|
pdc_fpdma_reset(ap);
|
|
pdc_clear_internal_debug_record_error_register(ap);
|
|
}
|
|
}
|
|
|
|
static int pdc_pata_cable_detect(struct ata_port *ap)
|
|
{
|
|
u8 tmp;
|
|
void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
|
|
|
|
tmp = readb(ata_mmio + PDC_CTLSTAT + 3);
|
|
if (tmp & 0x01)
|
|
return ATA_CBL_PATA40;
|
|
return ATA_CBL_PATA80;
|
|
}
|
|
|
|
static int pdc_sata_cable_detect(struct ata_port *ap)
|
|
{
|
|
return ATA_CBL_SATA;
|
|
}
|
|
|
|
static int pdc_sata_scr_read(struct ata_link *link,
|
|
unsigned int sc_reg, u32 *val)
|
|
{
|
|
if (sc_reg > SCR_CONTROL)
|
|
return -EINVAL;
|
|
*val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 4));
|
|
return 0;
|
|
}
|
|
|
|
static int pdc_sata_scr_write(struct ata_link *link,
|
|
unsigned int sc_reg, u32 val)
|
|
{
|
|
if (sc_reg > SCR_CONTROL)
|
|
return -EINVAL;
|
|
writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
|
|
return 0;
|
|
}
|
|
|
|
static void pdc_atapi_pkt(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_port *ap = qc->ap;
|
|
dma_addr_t sg_table = ap->bmdma_prd_dma;
|
|
unsigned int cdb_len = qc->dev->cdb_len;
|
|
u8 *cdb = qc->cdb;
|
|
struct pdc_port_priv *pp = ap->private_data;
|
|
u8 *buf = pp->pkt;
|
|
__le32 *buf32 = (__le32 *) buf;
|
|
unsigned int dev_sel, feature;
|
|
|
|
/* set control bits (byte 0), zero delay seq id (byte 3),
|
|
* and seq id (byte 2)
|
|
*/
|
|
switch (qc->tf.protocol) {
|
|
case ATAPI_PROT_DMA:
|
|
if (!(qc->tf.flags & ATA_TFLAG_WRITE))
|
|
buf32[0] = cpu_to_le32(PDC_PKT_READ);
|
|
else
|
|
buf32[0] = 0;
|
|
break;
|
|
case ATAPI_PROT_NODATA:
|
|
buf32[0] = cpu_to_le32(PDC_PKT_NODATA);
|
|
break;
|
|
default:
|
|
BUG();
|
|
break;
|
|
}
|
|
buf32[1] = cpu_to_le32(sg_table); /* S/G table addr */
|
|
buf32[2] = 0; /* no next-packet */
|
|
|
|
/* select drive */
|
|
if (sata_scr_valid(&ap->link))
|
|
dev_sel = PDC_DEVICE_SATA;
|
|
else
|
|
dev_sel = qc->tf.device;
|
|
|
|
buf[12] = (1 << 5) | ATA_REG_DEVICE;
|
|
buf[13] = dev_sel;
|
|
buf[14] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_CLEAR_BSY;
|
|
buf[15] = dev_sel; /* once more, waiting for BSY to clear */
|
|
|
|
buf[16] = (1 << 5) | ATA_REG_NSECT;
|
|
buf[17] = qc->tf.nsect;
|
|
buf[18] = (1 << 5) | ATA_REG_LBAL;
|
|
buf[19] = qc->tf.lbal;
|
|
|
|
/* set feature and byte counter registers */
|
|
if (qc->tf.protocol != ATAPI_PROT_DMA)
|
|
feature = PDC_FEATURE_ATAPI_PIO;
|
|
else
|
|
feature = PDC_FEATURE_ATAPI_DMA;
|
|
|
|
buf[20] = (1 << 5) | ATA_REG_FEATURE;
|
|
buf[21] = feature;
|
|
buf[22] = (1 << 5) | ATA_REG_BYTEL;
|
|
buf[23] = qc->tf.lbam;
|
|
buf[24] = (1 << 5) | ATA_REG_BYTEH;
|
|
buf[25] = qc->tf.lbah;
|
|
|
|
/* send ATAPI packet command 0xA0 */
|
|
buf[26] = (1 << 5) | ATA_REG_CMD;
|
|
buf[27] = qc->tf.command;
|
|
|
|
/* select drive and check DRQ */
|
|
buf[28] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_WAIT_DRDY;
|
|
buf[29] = dev_sel;
|
|
|
|
/* we can represent cdb lengths 2/4/6/8/10/12/14/16 */
|
|
BUG_ON(cdb_len & ~0x1E);
|
|
|
|
/* append the CDB as the final part */
|
|
buf[30] = (((cdb_len >> 1) & 7) << 5) | ATA_REG_DATA | PDC_LAST_REG;
|
|
memcpy(buf+31, cdb, cdb_len);
|
|
}
|
|
|
|
/**
|
|
* pdc_fill_sg - Fill PCI IDE PRD table
|
|
* @qc: Metadata associated with taskfile to be transferred
|
|
*
|
|
* Fill PCI IDE PRD (scatter-gather) table with segments
|
|
* associated with the current disk command.
|
|
* Make sure hardware does not choke on it.
|
|
*
|
|
* LOCKING:
|
|
* spin_lock_irqsave(host lock)
|
|
*
|
|
*/
|
|
static void pdc_fill_sg(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_port *ap = qc->ap;
|
|
struct ata_bmdma_prd *prd = ap->bmdma_prd;
|
|
struct scatterlist *sg;
|
|
const u32 SG_COUNT_ASIC_BUG = 41*4;
|
|
unsigned int si, idx;
|
|
u32 len;
|
|
|
|
if (!(qc->flags & ATA_QCFLAG_DMAMAP))
|
|
return;
|
|
|
|
idx = 0;
|
|
for_each_sg(qc->sg, sg, qc->n_elem, si) {
|
|
u32 addr, offset;
|
|
u32 sg_len;
|
|
|
|
/* determine if physical DMA addr spans 64K boundary.
|
|
* Note h/w doesn't support 64-bit, so we unconditionally
|
|
* truncate dma_addr_t to u32.
|
|
*/
|
|
addr = (u32) sg_dma_address(sg);
|
|
sg_len = sg_dma_len(sg);
|
|
|
|
while (sg_len) {
|
|
offset = addr & 0xffff;
|
|
len = sg_len;
|
|
if ((offset + sg_len) > 0x10000)
|
|
len = 0x10000 - offset;
|
|
|
|
prd[idx].addr = cpu_to_le32(addr);
|
|
prd[idx].flags_len = cpu_to_le32(len & 0xffff);
|
|
VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len);
|
|
|
|
idx++;
|
|
sg_len -= len;
|
|
addr += len;
|
|
}
|
|
}
|
|
|
|
len = le32_to_cpu(prd[idx - 1].flags_len);
|
|
|
|
if (len > SG_COUNT_ASIC_BUG) {
|
|
u32 addr;
|
|
|
|
VPRINTK("Splitting last PRD.\n");
|
|
|
|
addr = le32_to_cpu(prd[idx - 1].addr);
|
|
prd[idx - 1].flags_len = cpu_to_le32(len - SG_COUNT_ASIC_BUG);
|
|
VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx - 1, addr, SG_COUNT_ASIC_BUG);
|
|
|
|
addr = addr + len - SG_COUNT_ASIC_BUG;
|
|
len = SG_COUNT_ASIC_BUG;
|
|
prd[idx].addr = cpu_to_le32(addr);
|
|
prd[idx].flags_len = cpu_to_le32(len);
|
|
VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len);
|
|
|
|
idx++;
|
|
}
|
|
|
|
prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
|
|
}
|
|
|
|
static void pdc_qc_prep(struct ata_queued_cmd *qc)
|
|
{
|
|
struct pdc_port_priv *pp = qc->ap->private_data;
|
|
unsigned int i;
|
|
|
|
VPRINTK("ENTER\n");
|
|
|
|
switch (qc->tf.protocol) {
|
|
case ATA_PROT_DMA:
|
|
pdc_fill_sg(qc);
|
|
/*FALLTHROUGH*/
|
|
case ATA_PROT_NODATA:
|
|
i = pdc_pkt_header(&qc->tf, qc->ap->bmdma_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);
|
|
break;
|
|
case ATAPI_PROT_PIO:
|
|
pdc_fill_sg(qc);
|
|
break;
|
|
case ATAPI_PROT_DMA:
|
|
pdc_fill_sg(qc);
|
|
/*FALLTHROUGH*/
|
|
case ATAPI_PROT_NODATA:
|
|
pdc_atapi_pkt(qc);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int pdc_is_sataii_tx4(unsigned long flags)
|
|
{
|
|
const unsigned long mask = PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS;
|
|
return (flags & mask) == mask;
|
|
}
|
|
|
|
static unsigned int pdc_port_no_to_ata_no(unsigned int port_no,
|
|
int is_sataii_tx4)
|
|
{
|
|
static const unsigned char sataii_tx4_port_remap[4] = { 3, 1, 0, 2};
|
|
return is_sataii_tx4 ? sataii_tx4_port_remap[port_no] : port_no;
|
|
}
|
|
|
|
static unsigned int pdc_sata_nr_ports(const struct ata_port *ap)
|
|
{
|
|
return (ap->flags & PDC_FLAG_4_PORTS) ? 4 : 2;
|
|
}
|
|
|
|
static unsigned int pdc_sata_ata_port_to_ata_no(const struct ata_port *ap)
|
|
{
|
|
const struct ata_host *host = ap->host;
|
|
unsigned int nr_ports = pdc_sata_nr_ports(ap);
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < nr_ports && host->ports[i] != ap; ++i)
|
|
;
|
|
BUG_ON(i >= nr_ports);
|
|
return pdc_port_no_to_ata_no(i, pdc_is_sataii_tx4(ap->flags));
|
|
}
|
|
|
|
static void pdc_freeze(struct ata_port *ap)
|
|
{
|
|
void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
|
|
u32 tmp;
|
|
|
|
tmp = readl(ata_mmio + PDC_CTLSTAT);
|
|
tmp |= PDC_IRQ_DISABLE;
|
|
tmp &= ~PDC_DMA_ENABLE;
|
|
writel(tmp, ata_mmio + PDC_CTLSTAT);
|
|
readl(ata_mmio + PDC_CTLSTAT); /* flush */
|
|
}
|
|
|
|
static void pdc_sata_freeze(struct ata_port *ap)
|
|
{
|
|
struct ata_host *host = ap->host;
|
|
void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR];
|
|
unsigned int hotplug_offset = PDC2_SATA_PLUG_CSR;
|
|
unsigned int ata_no = pdc_sata_ata_port_to_ata_no(ap);
|
|
u32 hotplug_status;
|
|
|
|
/* Disable hotplug events on this port.
|
|
*
|
|
* Locking:
|
|
* 1) hotplug register accesses must be serialised via host->lock
|
|
* 2) ap->lock == &ap->host->lock
|
|
* 3) ->freeze() and ->thaw() are called with ap->lock held
|
|
*/
|
|
hotplug_status = readl(host_mmio + hotplug_offset);
|
|
hotplug_status |= 0x11 << (ata_no + 16);
|
|
writel(hotplug_status, host_mmio + hotplug_offset);
|
|
readl(host_mmio + hotplug_offset); /* flush */
|
|
|
|
pdc_freeze(ap);
|
|
}
|
|
|
|
static void pdc_thaw(struct ata_port *ap)
|
|
{
|
|
void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
|
|
u32 tmp;
|
|
|
|
/* clear IRQ */
|
|
readl(ata_mmio + PDC_COMMAND);
|
|
|
|
/* turn IRQ back on */
|
|
tmp = readl(ata_mmio + PDC_CTLSTAT);
|
|
tmp &= ~PDC_IRQ_DISABLE;
|
|
writel(tmp, ata_mmio + PDC_CTLSTAT);
|
|
readl(ata_mmio + PDC_CTLSTAT); /* flush */
|
|
}
|
|
|
|
static void pdc_sata_thaw(struct ata_port *ap)
|
|
{
|
|
struct ata_host *host = ap->host;
|
|
void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR];
|
|
unsigned int hotplug_offset = PDC2_SATA_PLUG_CSR;
|
|
unsigned int ata_no = pdc_sata_ata_port_to_ata_no(ap);
|
|
u32 hotplug_status;
|
|
|
|
pdc_thaw(ap);
|
|
|
|
/* Enable hotplug events on this port.
|
|
* Locking: see pdc_sata_freeze().
|
|
*/
|
|
hotplug_status = readl(host_mmio + hotplug_offset);
|
|
hotplug_status |= 0x11 << ata_no;
|
|
hotplug_status &= ~(0x11 << (ata_no + 16));
|
|
writel(hotplug_status, host_mmio + hotplug_offset);
|
|
readl(host_mmio + hotplug_offset); /* flush */
|
|
}
|
|
|
|
static int pdc_pata_softreset(struct ata_link *link, unsigned int *class,
|
|
unsigned long deadline)
|
|
{
|
|
pdc_reset_port(link->ap);
|
|
return ata_sff_softreset(link, class, deadline);
|
|
}
|
|
|
|
static unsigned int pdc_ata_port_to_ata_no(const struct ata_port *ap)
|
|
{
|
|
void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
|
|
void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
|
|
|
|
/* ata_mmio == host_mmio + 0x200 + ata_no * 0x80 */
|
|
return (ata_mmio - host_mmio - 0x200) / 0x80;
|
|
}
|
|
|
|
static void pdc_hard_reset_port(struct ata_port *ap)
|
|
{
|
|
void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
|
|
void __iomem *pcictl_b1_mmio = host_mmio + PDC_PCI_CTL + 1;
|
|
unsigned int ata_no = pdc_ata_port_to_ata_no(ap);
|
|
struct pdc_host_priv *hpriv = ap->host->private_data;
|
|
u8 tmp;
|
|
|
|
spin_lock(&hpriv->hard_reset_lock);
|
|
|
|
tmp = readb(pcictl_b1_mmio);
|
|
tmp &= ~(0x10 << ata_no);
|
|
writeb(tmp, pcictl_b1_mmio);
|
|
readb(pcictl_b1_mmio); /* flush */
|
|
udelay(100);
|
|
tmp |= (0x10 << ata_no);
|
|
writeb(tmp, pcictl_b1_mmio);
|
|
readb(pcictl_b1_mmio); /* flush */
|
|
|
|
spin_unlock(&hpriv->hard_reset_lock);
|
|
}
|
|
|
|
static int pdc_sata_hardreset(struct ata_link *link, unsigned int *class,
|
|
unsigned long deadline)
|
|
{
|
|
if (link->ap->flags & PDC_FLAG_GEN_II)
|
|
pdc_not_at_command_packet_phase(link->ap);
|
|
/* hotplug IRQs should have been masked by pdc_sata_freeze() */
|
|
pdc_hard_reset_port(link->ap);
|
|
pdc_reset_port(link->ap);
|
|
|
|
/* sata_promise can't reliably acquire the first D2H Reg FIS
|
|
* after hardreset. Do non-waiting hardreset and request
|
|
* follow-up SRST.
|
|
*/
|
|
return sata_std_hardreset(link, class, deadline);
|
|
}
|
|
|
|
static void pdc_error_handler(struct ata_port *ap)
|
|
{
|
|
if (!(ap->pflags & ATA_PFLAG_FROZEN))
|
|
pdc_reset_port(ap);
|
|
|
|
ata_sff_error_handler(ap);
|
|
}
|
|
|
|
static void pdc_post_internal_cmd(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_port *ap = qc->ap;
|
|
|
|
/* make DMA engine forget about the failed command */
|
|
if (qc->flags & ATA_QCFLAG_FAILED)
|
|
pdc_reset_port(ap);
|
|
}
|
|
|
|
static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc,
|
|
u32 port_status, u32 err_mask)
|
|
{
|
|
struct ata_eh_info *ehi = &ap->link.eh_info;
|
|
unsigned int ac_err_mask = 0;
|
|
|
|
ata_ehi_clear_desc(ehi);
|
|
ata_ehi_push_desc(ehi, "port_status 0x%08x", port_status);
|
|
port_status &= err_mask;
|
|
|
|
if (port_status & PDC_DRIVE_ERR)
|
|
ac_err_mask |= AC_ERR_DEV;
|
|
if (port_status & (PDC_OVERRUN_ERR | PDC_UNDERRUN_ERR))
|
|
ac_err_mask |= AC_ERR_OTHER;
|
|
if (port_status & (PDC2_ATA_HBA_ERR | PDC2_ATA_DMA_CNT_ERR))
|
|
ac_err_mask |= AC_ERR_ATA_BUS;
|
|
if (port_status & (PDC_PH_ERR | PDC_SH_ERR | PDC_DH_ERR | PDC2_HTO_ERR
|
|
| PDC_PCI_SYS_ERR | PDC1_PCI_PARITY_ERR))
|
|
ac_err_mask |= AC_ERR_HOST_BUS;
|
|
|
|
if (sata_scr_valid(&ap->link)) {
|
|
u32 serror;
|
|
|
|
pdc_sata_scr_read(&ap->link, SCR_ERROR, &serror);
|
|
ehi->serror |= serror;
|
|
}
|
|
|
|
qc->err_mask |= ac_err_mask;
|
|
|
|
pdc_reset_port(ap);
|
|
|
|
ata_port_abort(ap);
|
|
}
|
|
|
|
static unsigned int pdc_host_intr(struct ata_port *ap,
|
|
struct ata_queued_cmd *qc)
|
|
{
|
|
unsigned int handled = 0;
|
|
void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
|
|
u32 port_status, err_mask;
|
|
|
|
err_mask = PDC_ERR_MASK;
|
|
if (ap->flags & PDC_FLAG_GEN_II)
|
|
err_mask &= ~PDC1_ERR_MASK;
|
|
else
|
|
err_mask &= ~PDC2_ERR_MASK;
|
|
port_status = readl(ata_mmio + PDC_GLOBAL_CTL);
|
|
if (unlikely(port_status & err_mask)) {
|
|
pdc_error_intr(ap, qc, port_status, err_mask);
|
|
return 1;
|
|
}
|
|
|
|
switch (qc->tf.protocol) {
|
|
case ATA_PROT_DMA:
|
|
case ATA_PROT_NODATA:
|
|
case ATAPI_PROT_DMA:
|
|
case ATAPI_PROT_NODATA:
|
|
qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
|
|
ata_qc_complete(qc);
|
|
handled = 1;
|
|
break;
|
|
default:
|
|
ap->stats.idle_irq++;
|
|
break;
|
|
}
|
|
|
|
return handled;
|
|
}
|
|
|
|
static void pdc_irq_clear(struct ata_port *ap)
|
|
{
|
|
void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
|
|
|
|
readl(ata_mmio + PDC_COMMAND);
|
|
}
|
|
|
|
static irqreturn_t pdc_interrupt(int irq, void *dev_instance)
|
|
{
|
|
struct ata_host *host = dev_instance;
|
|
struct ata_port *ap;
|
|
u32 mask = 0;
|
|
unsigned int i, tmp;
|
|
unsigned int handled = 0;
|
|
void __iomem *host_mmio;
|
|
unsigned int hotplug_offset, ata_no;
|
|
u32 hotplug_status;
|
|
int is_sataii_tx4;
|
|
|
|
VPRINTK("ENTER\n");
|
|
|
|
if (!host || !host->iomap[PDC_MMIO_BAR]) {
|
|
VPRINTK("QUICK EXIT\n");
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
host_mmio = host->iomap[PDC_MMIO_BAR];
|
|
|
|
spin_lock(&host->lock);
|
|
|
|
/* read and clear hotplug flags for all ports */
|
|
if (host->ports[0]->flags & PDC_FLAG_GEN_II) {
|
|
hotplug_offset = PDC2_SATA_PLUG_CSR;
|
|
hotplug_status = readl(host_mmio + hotplug_offset);
|
|
if (hotplug_status & 0xff)
|
|
writel(hotplug_status | 0xff, host_mmio + hotplug_offset);
|
|
hotplug_status &= 0xff; /* clear uninteresting bits */
|
|
} else
|
|
hotplug_status = 0;
|
|
|
|
/* reading should also clear interrupts */
|
|
mask = readl(host_mmio + PDC_INT_SEQMASK);
|
|
|
|
if (mask == 0xffffffff && hotplug_status == 0) {
|
|
VPRINTK("QUICK EXIT 2\n");
|
|
goto done_irq;
|
|
}
|
|
|
|
mask &= 0xffff; /* only 16 SEQIDs possible */
|
|
if (mask == 0 && hotplug_status == 0) {
|
|
VPRINTK("QUICK EXIT 3\n");
|
|
goto done_irq;
|
|
}
|
|
|
|
writel(mask, host_mmio + PDC_INT_SEQMASK);
|
|
|
|
is_sataii_tx4 = pdc_is_sataii_tx4(host->ports[0]->flags);
|
|
|
|
for (i = 0; i < host->n_ports; i++) {
|
|
VPRINTK("port %u\n", i);
|
|
ap = host->ports[i];
|
|
|
|
/* check for a plug or unplug event */
|
|
ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4);
|
|
tmp = hotplug_status & (0x11 << ata_no);
|
|
if (tmp) {
|
|
struct ata_eh_info *ehi = &ap->link.eh_info;
|
|
ata_ehi_clear_desc(ehi);
|
|
ata_ehi_hotplugged(ehi);
|
|
ata_ehi_push_desc(ehi, "hotplug_status %#x", tmp);
|
|
ata_port_freeze(ap);
|
|
++handled;
|
|
continue;
|
|
}
|
|
|
|
/* check for a packet interrupt */
|
|
tmp = mask & (1 << (i + 1));
|
|
if (tmp) {
|
|
struct ata_queued_cmd *qc;
|
|
|
|
qc = ata_qc_from_tag(ap, ap->link.active_tag);
|
|
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
|
|
handled += pdc_host_intr(ap, qc);
|
|
}
|
|
}
|
|
|
|
VPRINTK("EXIT\n");
|
|
|
|
done_irq:
|
|
spin_unlock(&host->lock);
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
static void pdc_packet_start(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_port *ap = qc->ap;
|
|
struct pdc_port_priv *pp = ap->private_data;
|
|
void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
|
|
void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
|
|
unsigned int port_no = ap->port_no;
|
|
u8 seq = (u8) (port_no + 1);
|
|
|
|
VPRINTK("ENTER, ap %p\n", ap);
|
|
|
|
writel(0x00000001, host_mmio + (seq * 4));
|
|
readl(host_mmio + (seq * 4)); /* flush */
|
|
|
|
pp->pkt[2] = seq;
|
|
wmb(); /* flush PRD, pkt writes */
|
|
writel(pp->pkt_dma, ata_mmio + PDC_PKT_SUBMIT);
|
|
readl(ata_mmio + PDC_PKT_SUBMIT); /* flush */
|
|
}
|
|
|
|
static unsigned int pdc_qc_issue(struct ata_queued_cmd *qc)
|
|
{
|
|
switch (qc->tf.protocol) {
|
|
case ATAPI_PROT_NODATA:
|
|
if (qc->dev->flags & ATA_DFLAG_CDB_INTR)
|
|
break;
|
|
/*FALLTHROUGH*/
|
|
case ATA_PROT_NODATA:
|
|
if (qc->tf.flags & ATA_TFLAG_POLLING)
|
|
break;
|
|
/*FALLTHROUGH*/
|
|
case ATAPI_PROT_DMA:
|
|
case ATA_PROT_DMA:
|
|
pdc_packet_start(qc);
|
|
return 0;
|
|
default:
|
|
break;
|
|
}
|
|
return ata_sff_qc_issue(qc);
|
|
}
|
|
|
|
static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
|
|
{
|
|
WARN_ON(tf->protocol == ATA_PROT_DMA || tf->protocol == ATAPI_PROT_DMA);
|
|
ata_sff_tf_load(ap, tf);
|
|
}
|
|
|
|
static void pdc_exec_command_mmio(struct ata_port *ap,
|
|
const struct ata_taskfile *tf)
|
|
{
|
|
WARN_ON(tf->protocol == ATA_PROT_DMA || tf->protocol == ATAPI_PROT_DMA);
|
|
ata_sff_exec_command(ap, tf);
|
|
}
|
|
|
|
static int pdc_check_atapi_dma(struct ata_queued_cmd *qc)
|
|
{
|
|
u8 *scsicmd = qc->scsicmd->cmnd;
|
|
int pio = 1; /* atapi dma off by default */
|
|
|
|
/* Whitelist commands that may use DMA. */
|
|
switch (scsicmd[0]) {
|
|
case WRITE_12:
|
|
case WRITE_10:
|
|
case WRITE_6:
|
|
case READ_12:
|
|
case READ_10:
|
|
case READ_6:
|
|
case 0xad: /* READ_DVD_STRUCTURE */
|
|
case 0xbe: /* READ_CD */
|
|
pio = 0;
|
|
}
|
|
/* -45150 (FFFF4FA2) to -1 (FFFFFFFF) shall use PIO mode */
|
|
if (scsicmd[0] == WRITE_10) {
|
|
unsigned int lba =
|
|
(scsicmd[2] << 24) |
|
|
(scsicmd[3] << 16) |
|
|
(scsicmd[4] << 8) |
|
|
scsicmd[5];
|
|
if (lba >= 0xFFFF4FA2)
|
|
pio = 1;
|
|
}
|
|
return pio;
|
|
}
|
|
|
|
static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc)
|
|
{
|
|
/* First generation chips cannot use ATAPI DMA on SATA ports */
|
|
return 1;
|
|
}
|
|
|
|
static void pdc_ata_setup_port(struct ata_port *ap,
|
|
void __iomem *base, void __iomem *scr_addr)
|
|
{
|
|
ap->ioaddr.cmd_addr = base;
|
|
ap->ioaddr.data_addr = base;
|
|
ap->ioaddr.feature_addr =
|
|
ap->ioaddr.error_addr = base + 0x4;
|
|
ap->ioaddr.nsect_addr = base + 0x8;
|
|
ap->ioaddr.lbal_addr = base + 0xc;
|
|
ap->ioaddr.lbam_addr = base + 0x10;
|
|
ap->ioaddr.lbah_addr = base + 0x14;
|
|
ap->ioaddr.device_addr = base + 0x18;
|
|
ap->ioaddr.command_addr =
|
|
ap->ioaddr.status_addr = base + 0x1c;
|
|
ap->ioaddr.altstatus_addr =
|
|
ap->ioaddr.ctl_addr = base + 0x38;
|
|
ap->ioaddr.scr_addr = scr_addr;
|
|
}
|
|
|
|
static void pdc_host_init(struct ata_host *host)
|
|
{
|
|
void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR];
|
|
int is_gen2 = host->ports[0]->flags & PDC_FLAG_GEN_II;
|
|
int hotplug_offset;
|
|
u32 tmp;
|
|
|
|
if (is_gen2)
|
|
hotplug_offset = PDC2_SATA_PLUG_CSR;
|
|
else
|
|
hotplug_offset = PDC_SATA_PLUG_CSR;
|
|
|
|
/*
|
|
* Except for the hotplug stuff, this is voodoo from the
|
|
* Promise driver. Label this entire section
|
|
* "TODO: figure out why we do this"
|
|
*/
|
|
|
|
/* enable BMR_BURST, maybe change FIFO_SHD to 8 dwords */
|
|
tmp = readl(host_mmio + PDC_FLASH_CTL);
|
|
tmp |= 0x02000; /* bit 13 (enable bmr burst) */
|
|
if (!is_gen2)
|
|
tmp |= 0x10000; /* bit 16 (fifo threshold at 8 dw) */
|
|
writel(tmp, host_mmio + PDC_FLASH_CTL);
|
|
|
|
/* clear plug/unplug flags for all ports */
|
|
tmp = readl(host_mmio + hotplug_offset);
|
|
writel(tmp | 0xff, host_mmio + hotplug_offset);
|
|
|
|
tmp = readl(host_mmio + hotplug_offset);
|
|
if (is_gen2) /* unmask plug/unplug ints */
|
|
writel(tmp & ~0xff0000, host_mmio + hotplug_offset);
|
|
else /* mask plug/unplug ints */
|
|
writel(tmp | 0xff0000, host_mmio + hotplug_offset);
|
|
|
|
/* don't initialise TBG or SLEW on 2nd generation chips */
|
|
if (is_gen2)
|
|
return;
|
|
|
|
/* reduce TBG clock to 133 Mhz. */
|
|
tmp = readl(host_mmio + PDC_TBG_MODE);
|
|
tmp &= ~0x30000; /* clear bit 17, 16*/
|
|
tmp |= 0x10000; /* set bit 17:16 = 0:1 */
|
|
writel(tmp, host_mmio + PDC_TBG_MODE);
|
|
|
|
readl(host_mmio + PDC_TBG_MODE); /* flush */
|
|
msleep(10);
|
|
|
|
/* adjust slew rate control register. */
|
|
tmp = readl(host_mmio + PDC_SLEW_CTL);
|
|
tmp &= 0xFFFFF03F; /* clear bit 11 ~ 6 */
|
|
tmp |= 0x00000900; /* set bit 11-9 = 100b , bit 8-6 = 100 */
|
|
writel(tmp, host_mmio + PDC_SLEW_CTL);
|
|
}
|
|
|
|
static int pdc_ata_init_one(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
const struct ata_port_info *pi = &pdc_port_info[ent->driver_data];
|
|
const struct ata_port_info *ppi[PDC_MAX_PORTS];
|
|
struct ata_host *host;
|
|
struct pdc_host_priv *hpriv;
|
|
void __iomem *host_mmio;
|
|
int n_ports, i, rc;
|
|
int is_sataii_tx4;
|
|
|
|
ata_print_version_once(&pdev->dev, DRV_VERSION);
|
|
|
|
/* enable and acquire resources */
|
|
rc = pcim_enable_device(pdev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = pcim_iomap_regions(pdev, 1 << PDC_MMIO_BAR, DRV_NAME);
|
|
if (rc == -EBUSY)
|
|
pcim_pin_device(pdev);
|
|
if (rc)
|
|
return rc;
|
|
host_mmio = pcim_iomap_table(pdev)[PDC_MMIO_BAR];
|
|
|
|
/* determine port configuration and setup host */
|
|
n_ports = 2;
|
|
if (pi->flags & PDC_FLAG_4_PORTS)
|
|
n_ports = 4;
|
|
for (i = 0; i < n_ports; i++)
|
|
ppi[i] = pi;
|
|
|
|
if (pi->flags & PDC_FLAG_SATA_PATA) {
|
|
u8 tmp = readb(host_mmio + PDC_FLASH_CTL + 1);
|
|
if (!(tmp & 0x80))
|
|
ppi[n_ports++] = pi + 1;
|
|
}
|
|
|
|
host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
|
|
if (!host) {
|
|
dev_err(&pdev->dev, "failed to allocate host\n");
|
|
return -ENOMEM;
|
|
}
|
|
hpriv = devm_kzalloc(&pdev->dev, sizeof *hpriv, GFP_KERNEL);
|
|
if (!hpriv)
|
|
return -ENOMEM;
|
|
spin_lock_init(&hpriv->hard_reset_lock);
|
|
host->private_data = hpriv;
|
|
host->iomap = pcim_iomap_table(pdev);
|
|
|
|
is_sataii_tx4 = pdc_is_sataii_tx4(pi->flags);
|
|
for (i = 0; i < host->n_ports; i++) {
|
|
struct ata_port *ap = host->ports[i];
|
|
unsigned int ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4);
|
|
unsigned int ata_offset = 0x200 + ata_no * 0x80;
|
|
unsigned int scr_offset = 0x400 + ata_no * 0x100;
|
|
|
|
pdc_ata_setup_port(ap, host_mmio + ata_offset, host_mmio + scr_offset);
|
|
|
|
ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
|
|
ata_port_pbar_desc(ap, PDC_MMIO_BAR, ata_offset, "ata");
|
|
}
|
|
|
|
/* initialize adapter */
|
|
pdc_host_init(host);
|
|
|
|
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;
|
|
|
|
/* start host, request IRQ and attach */
|
|
pci_set_master(pdev);
|
|
return ata_host_activate(host, pdev->irq, pdc_interrupt, IRQF_SHARED,
|
|
&pdc_ata_sht);
|
|
}
|
|
|
|
module_pci_driver(pdc_ata_pci_driver);
|
|
|
|
MODULE_AUTHOR("Jeff Garzik");
|
|
MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl);
|
|
MODULE_VERSION(DRV_VERSION);
|