#include <linux/io.h>
#include <linux/scatterlist.h>
+#include <asm/ide.h>
+
#define MODNAME "tx4939ide"
/* ATA Shadow Registers (8-bit except for Data which is 16-bit) */
#ifdef __BIG_ENDIAN
/* custom ide_build_dmatable to handle swapped layout */
-static int tx4939ide_build_dmatable(ide_drive_t *drive, struct request *rq)
+static int tx4939ide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
{
ide_hwif_t *hwif = drive->hwif;
u32 *table = (u32 *)hwif->dmatable_cpu;
int i;
struct scatterlist *sg;
- hwif->sg_nents = ide_build_sglist(drive, rq);
- if (hwif->sg_nents == 0)
- return 0;
-
- for_each_sg(hwif->sg_table, sg, hwif->sg_nents, i) {
+ for_each_sg(hwif->sg_table, sg, cmd->sg_nents, i) {
u32 cur_addr, cur_len, bcount;
cur_addr = sg_dma_address(sg);
bcount = cur_len;
/*
* This workaround for zero count seems required.
- * (standard ide_build_dmatable do it too)
+ * (standard ide_build_dmatable does it too)
*/
- if ((bcount & 0xffff) == 0x0000)
+ if (bcount == 0x10000)
bcount = 0x8000;
*table++ = bcount & 0xffff;
*table++ = cur_addr;
printk(KERN_ERR "%s: %s\n", drive->name,
count ? "DMA table too small" : "empty DMA table?");
- ide_destroy_dmatable(drive);
-
return 0; /* revert to PIO for this request */
}
#else
#define tx4939ide_build_dmatable ide_build_dmatable
#endif
-static int tx4939ide_dma_setup(ide_drive_t *drive)
+static int tx4939ide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
{
ide_hwif_t *hwif = drive->hwif;
void __iomem *base = TX4939IDE_BASE(hwif);
- struct request *rq = hwif->hwgroup->rq;
- u8 reading;
- int nent;
-
- if (rq_data_dir(rq))
- reading = 0;
- else
- reading = ATA_DMA_WR;
+ u8 rw = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 0 : ATA_DMA_WR;
/* fall back to PIO! */
- nent = tx4939ide_build_dmatable(drive, rq);
- if (!nent) {
- ide_map_sg(drive, rq);
+ if (tx4939ide_build_dmatable(drive, cmd) == 0)
return 1;
- }
/* PRD table */
tx4939ide_writel(hwif->dmatable_dma, base, TX4939IDE_PRD_Ptr);
/* specify r/w */
- tx4939ide_writeb(reading, base, TX4939IDE_DMA_Cmd);
+ tx4939ide_writeb(rw, base, TX4939IDE_DMA_Cmd);
/* clear INTR & ERROR flags */
tx4939ide_clear_dma_status(base);
- drive->waiting_for_dma = 1;
-
tx4939ide_writew(SECTOR_SIZE / 2, base, drive->dn ?
TX4939IDE_Xfer_Cnt_2 : TX4939IDE_Xfer_Cnt_1);
- tx4939ide_writew(rq->nr_sectors, base, TX4939IDE_Sec_Cnt);
+
+ tx4939ide_writew(blk_rq_sectors(cmd->rq), base, TX4939IDE_Sec_Cnt);
+
return 0;
}
void __iomem *base = TX4939IDE_BASE(hwif);
u16 ctl = tx4939ide_readw(base, TX4939IDE_Int_Ctl);
- drive->waiting_for_dma = 0;
-
/* get DMA command mode */
dma_cmd = tx4939ide_readb(base, TX4939IDE_DMA_Cmd);
/* stop DMA */
/* read and clear the INTR & ERROR bits */
dma_stat = tx4939ide_clear_dma_status(base);
- /* purge DMA mappings */
- ide_destroy_dmatable(drive);
- /* verify good DMA status */
- wmb();
+#define CHECK_DMA_MASK (ATA_DMA_ACTIVE | ATA_DMA_ERR | ATA_DMA_INTR)
- if ((dma_stat & (ATA_DMA_INTR | ATA_DMA_ERR | ATA_DMA_ACTIVE)) == 0 &&
+ /* verify good DMA status */
+ if ((dma_stat & CHECK_DMA_MASK) == 0 &&
(ctl & (TX4939IDE_INT_XFEREND | TX4939IDE_INT_HOST)) ==
(TX4939IDE_INT_XFEREND | TX4939IDE_INT_HOST))
/* INT_IDE lost... bug? */
return 0;
- return ((dma_stat & (ATA_DMA_INTR | ATA_DMA_ERR | ATA_DMA_ACTIVE)) !=
+ return ((dma_stat & CHECK_DMA_MASK) !=
ATA_DMA_INTR) ? 0x10 | dma_stat : 0;
}
return found;
}
+#ifdef __BIG_ENDIAN
+static u8 tx4939ide_dma_sff_read_status(ide_hwif_t *hwif)
+{
+ void __iomem *base = TX4939IDE_BASE(hwif);
+
+ return tx4939ide_readb(base, TX4939IDE_DMA_Stat);
+}
+#else
+#define tx4939ide_dma_sff_read_status ide_dma_sff_read_status
+#endif
+
static void tx4939ide_init_hwif(ide_hwif_t *hwif)
{
void __iomem *base = TX4939IDE_BASE(hwif);
return ide_allocate_dma_engine(hwif);
}
-static void tx4939ide_tf_load_fixup(ide_drive_t *drive, ide_task_t *task)
+static void tx4939ide_tf_load_fixup(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
void __iomem *base = TX4939IDE_BASE(hwif);
* Fix ATA100 CORE System Control Register. (The write to the
* Device/Head register may write wrong data to the System
* Control Register)
- * While Sys_Ctl is written here, selectproc is not needed.
+ * While Sys_Ctl is written here, dev_select() is not needed.
*/
tx4939ide_writew(sysctl, base, TX4939IDE_Sys_Ctl);
}
-#ifdef __BIG_ENDIAN
-
-static u8 tx4939ide_read_sff_dma_status(ide_hwif_t *hwif)
+static void tx4939ide_tf_load(ide_drive_t *drive, struct ide_taskfile *tf,
+ u8 valid)
{
- void __iomem *base = TX4939IDE_BASE(hwif);
+ ide_tf_load(drive, tf, valid);
- return tx4939ide_readb(base, TX4939IDE_DMA_Stat);
-}
-
-/* custom iops (independent from SWAP_IO_SPACE) */
-static u8 tx4939ide_inb(unsigned long port)
-{
- return __raw_readb((void __iomem *)port);
+ if (valid & IDE_VALID_DEVICE)
+ tx4939ide_tf_load_fixup(drive);
}
-static void tx4939ide_outb(u8 value, unsigned long port)
-{
- __raw_writeb(value, (void __iomem *)port);
-}
-
-static void tx4939ide_tf_load(ide_drive_t *drive, ide_task_t *task)
-{
- ide_hwif_t *hwif = drive->hwif;
- struct ide_io_ports *io_ports = &hwif->io_ports;
- struct ide_taskfile *tf = &task->tf;
- u8 HIHI = task->tf_flags & IDE_TFLAG_LBA48 ? 0xE0 : 0xEF;
-
- if (task->tf_flags & IDE_TFLAG_FLAGGED)
- HIHI = 0xFF;
-
- if (task->tf_flags & IDE_TFLAG_OUT_DATA) {
- u16 data = (tf->hob_data << 8) | tf->data;
-
- /* no endian swap */
- __raw_writew(data, (void __iomem *)io_ports->data_addr);
- }
-
- if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
- tx4939ide_outb(tf->hob_feature, io_ports->feature_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
- tx4939ide_outb(tf->hob_nsect, io_ports->nsect_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
- tx4939ide_outb(tf->hob_lbal, io_ports->lbal_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
- tx4939ide_outb(tf->hob_lbam, io_ports->lbam_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
- tx4939ide_outb(tf->hob_lbah, io_ports->lbah_addr);
-
- if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
- tx4939ide_outb(tf->feature, io_ports->feature_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
- tx4939ide_outb(tf->nsect, io_ports->nsect_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
- tx4939ide_outb(tf->lbal, io_ports->lbal_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
- tx4939ide_outb(tf->lbam, io_ports->lbam_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
- tx4939ide_outb(tf->lbah, io_ports->lbah_addr);
-
- if (task->tf_flags & IDE_TFLAG_OUT_DEVICE) {
- tx4939ide_outb((tf->device & HIHI) | drive->select,
- io_ports->device_addr);
- tx4939ide_tf_load_fixup(drive, task);
- }
-}
-
-static void tx4939ide_tf_read(ide_drive_t *drive, ide_task_t *task)
-{
- ide_hwif_t *hwif = drive->hwif;
- struct ide_io_ports *io_ports = &hwif->io_ports;
- struct ide_taskfile *tf = &task->tf;
-
- if (task->tf_flags & IDE_TFLAG_IN_DATA) {
- u16 data;
-
- /* no endian swap */
- data = __raw_readw((void __iomem *)io_ports->data_addr);
- tf->data = data & 0xff;
- tf->hob_data = (data >> 8) & 0xff;
- }
-
- /* be sure we're looking at the low order bits */
- tx4939ide_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
-
- if (task->tf_flags & IDE_TFLAG_IN_FEATURE)
- tf->feature = tx4939ide_inb(io_ports->feature_addr);
- if (task->tf_flags & IDE_TFLAG_IN_NSECT)
- tf->nsect = tx4939ide_inb(io_ports->nsect_addr);
- if (task->tf_flags & IDE_TFLAG_IN_LBAL)
- tf->lbal = tx4939ide_inb(io_ports->lbal_addr);
- if (task->tf_flags & IDE_TFLAG_IN_LBAM)
- tf->lbam = tx4939ide_inb(io_ports->lbam_addr);
- if (task->tf_flags & IDE_TFLAG_IN_LBAH)
- tf->lbah = tx4939ide_inb(io_ports->lbah_addr);
- if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
- tf->device = tx4939ide_inb(io_ports->device_addr);
-
- if (task->tf_flags & IDE_TFLAG_LBA48) {
- tx4939ide_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
-
- if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
- tf->hob_feature =
- tx4939ide_inb(io_ports->feature_addr);
- if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
- tf->hob_nsect = tx4939ide_inb(io_ports->nsect_addr);
- if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
- tf->hob_lbal = tx4939ide_inb(io_ports->lbal_addr);
- if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
- tf->hob_lbam = tx4939ide_inb(io_ports->lbam_addr);
- if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
- tf->hob_lbah = tx4939ide_inb(io_ports->lbah_addr);
- }
-}
+#ifdef __BIG_ENDIAN
-static void tx4939ide_input_data_swap(ide_drive_t *drive, struct request *rq,
+/* custom iops (independent from SWAP_IO_SPACE) */
+static void tx4939ide_input_data_swap(ide_drive_t *drive, struct ide_cmd *cmd,
void *buf, unsigned int len)
{
unsigned long port = drive->hwif->io_ports.data_addr;
__ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
}
-static void tx4939ide_output_data_swap(ide_drive_t *drive, struct request *rq,
+static void tx4939ide_output_data_swap(ide_drive_t *drive, struct ide_cmd *cmd,
void *buf, unsigned int len)
{
unsigned long port = drive->hwif->io_ports.data_addr;
.exec_command = ide_exec_command,
.read_status = ide_read_status,
.read_altstatus = ide_read_altstatus,
- .read_sff_dma_status = tx4939ide_read_sff_dma_status,
-
- .set_irq = ide_set_irq,
+ .write_devctl = ide_write_devctl,
+ .dev_select = ide_dev_select,
.tf_load = tx4939ide_tf_load,
- .tf_read = tx4939ide_tf_read,
+ .tf_read = ide_tf_read,
.input_data = tx4939ide_input_data_swap,
.output_data = tx4939ide_output_data_swap,
#else /* __LITTLE_ENDIAN */
-static void tx4939ide_tf_load(ide_drive_t *drive, ide_task_t *task)
-{
- ide_tf_load(drive, task);
- if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
- tx4939ide_tf_load_fixup(drive, task);
-}
-
static const struct ide_tp_ops tx4939ide_tp_ops = {
.exec_command = ide_exec_command,
.read_status = ide_read_status,
.read_altstatus = ide_read_altstatus,
- .read_sff_dma_status = ide_read_sff_dma_status,
-
- .set_irq = ide_set_irq,
+ .write_devctl = ide_write_devctl,
+ .dev_select = ide_dev_select,
.tf_load = tx4939ide_tf_load,
.tf_read = ide_tf_read,
static const struct ide_dma_ops tx4939ide_dma_ops = {
.dma_host_set = tx4939ide_dma_host_set,
.dma_setup = tx4939ide_dma_setup,
- .dma_exec_cmd = ide_dma_exec_cmd,
.dma_start = ide_dma_start,
.dma_end = tx4939ide_dma_end,
.dma_test_irq = tx4939ide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
- .dma_timeout = ide_dma_timeout,
+ .dma_timer_expiry = ide_dma_sff_timer_expiry,
+ .dma_sff_read_status = tx4939ide_dma_sff_read_status,
};
static const struct ide_port_info tx4939ide_port_info __initdata = {
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA5,
+ .chipset = ide_generic,
};
static int __init tx4939ide_probe(struct platform_device *pdev)
{
- hw_regs_t hw;
- hw_regs_t *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
struct ide_host *host;
struct resource *res;
int irq, ret;
hw.dev = &pdev->dev;
pr_info("TX4939 IDE interface (base %#lx, irq %d)\n", mapbase, irq);
- host = ide_host_alloc(&tx4939ide_port_info, hws);
+ host = ide_host_alloc(&tx4939ide_port_info, hws, 1);
if (!host)
return -ENOMEM;
/* use extra_base for base address of the all registers */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff