#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
+
+#include <asm/ide.h>
#include <asm/txx9/tx4938.h>
static void tx4938ide_tune_ebusc(unsigned int ebus_ch,
unsigned int sp = (cr >> 4) & 3;
unsigned int clock = gbus_clock / (4 - sp);
unsigned int cycle = 1000000000 / clock;
- unsigned int wt, shwt;
+ unsigned int shwt;
+ int wt;
/* Minimum DIOx- active time */
wt = DIV_ROUND_UP(t->act8b, cycle) - 2;
/* IORDY setup time: 35ns */
- wt = max(wt, DIV_ROUND_UP(35, cycle));
+ wt = max_t(int, wt, DIV_ROUND_UP(35, cycle));
/* actual wait-cycle is max(wt & ~1, 1) */
if (wt > 2 && (wt & 1))
wt++;
/* Address-valid to DIOR/DIOW setup */
shwt = DIV_ROUND_UP(t->setup, cycle);
+ /* -DIOx recovery time (SHWT * 4) and cycle time requirement */
+ while ((shwt * 4 + wt + (wt ? 2 : 3)) * cycle < t->cycle)
+ shwt++;
+ if (shwt > 7) {
+ pr_warning("tx4938ide: SHWT violation (%d)\n", shwt);
+ shwt = 7;
+ }
pr_debug("tx4938ide: ebus %d, bus cycle %dns, WT %d, SHWT %d\n",
ebus_ch, cycle, wt, shwt);
- __raw_writeq((cr & ~(0x3f007ull)) | (wt << 12) | shwt,
+ __raw_writeq((cr & ~0x3f007ull) | (wt << 12) | shwt,
&tx4938_ebuscptr->cr[ebus_ch]);
}
-static void tx4938ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void tx4938ide_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
{
- ide_hwif_t *hwif = drive->hwif;
struct tx4938ide_platform_info *pdata = hwif->dev->platform_data;
- u8 safe = pio;
+ u8 safe = drive->pio_mode - XFER_PIO_0;
ide_drive_t *pair;
pair = ide_get_pair_dev(drive);
if (pair)
- safe = min(safe, ide_get_best_pio_mode(pair, 255, 5));
+ safe = min(safe, pair->pio_mode - XFER_PIO_0);
tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, safe);
}
#ifdef __BIG_ENDIAN
/* custom iops (independent from SWAP_IO_SPACE) */
-static u8 tx4938ide_inb(unsigned long port)
-{
- return __raw_readb((void __iomem *)port);
-}
-
-static void tx4938ide_outb(u8 value, unsigned long port)
-{
- __raw_writeb(value, (void __iomem *)port);
-}
-
-static void tx4938ide_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)
- tx4938ide_outb(tf->hob_feature, io_ports->feature_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
- tx4938ide_outb(tf->hob_nsect, io_ports->nsect_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
- tx4938ide_outb(tf->hob_lbal, io_ports->lbal_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
- tx4938ide_outb(tf->hob_lbam, io_ports->lbam_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
- tx4938ide_outb(tf->hob_lbah, io_ports->lbah_addr);
-
- if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
- tx4938ide_outb(tf->feature, io_ports->feature_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
- tx4938ide_outb(tf->nsect, io_ports->nsect_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
- tx4938ide_outb(tf->lbal, io_ports->lbal_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
- tx4938ide_outb(tf->lbam, io_ports->lbam_addr);
- if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
- tx4938ide_outb(tf->lbah, io_ports->lbah_addr);
-
- if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
- tx4938ide_outb((tf->device & HIHI) | drive->select,
- io_ports->device_addr);
-}
-
-static void tx4938ide_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 */
- tx4938ide_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
-
- if (task->tf_flags & IDE_TFLAG_IN_FEATURE)
- tf->feature = tx4938ide_inb(io_ports->feature_addr);
- if (task->tf_flags & IDE_TFLAG_IN_NSECT)
- tf->nsect = tx4938ide_inb(io_ports->nsect_addr);
- if (task->tf_flags & IDE_TFLAG_IN_LBAL)
- tf->lbal = tx4938ide_inb(io_ports->lbal_addr);
- if (task->tf_flags & IDE_TFLAG_IN_LBAM)
- tf->lbam = tx4938ide_inb(io_ports->lbam_addr);
- if (task->tf_flags & IDE_TFLAG_IN_LBAH)
- tf->lbah = tx4938ide_inb(io_ports->lbah_addr);
- if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
- tf->device = tx4938ide_inb(io_ports->device_addr);
-
- if (task->tf_flags & IDE_TFLAG_LBA48) {
- tx4938ide_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
-
- if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
- tf->hob_feature =
- tx4938ide_inb(io_ports->feature_addr);
- if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
- tf->hob_nsect = tx4938ide_inb(io_ports->nsect_addr);
- if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
- tf->hob_lbal = tx4938ide_inb(io_ports->lbal_addr);
- if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
- tf->hob_lbam = tx4938ide_inb(io_ports->lbam_addr);
- if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
- tf->hob_lbah = tx4938ide_inb(io_ports->lbah_addr);
- }
-}
-
-static void tx4938ide_input_data_swap(ide_drive_t *drive, struct request *rq,
+static void tx4938ide_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;
while (count--)
*ptr++ = cpu_to_le16(__raw_readw((void __iomem *)port));
- __ide_flush_dcache_range((unsigned long)buf, count * 2);
+ __ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
}
-static void tx4938ide_output_data_swap(ide_drive_t *drive, struct request *rq,
+static void tx4938ide_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;
__raw_writew(le16_to_cpu(*ptr), (void __iomem *)port);
ptr++;
}
- __ide_flush_dcache_range((unsigned long)buf, count * 2);
+ __ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
}
static const struct ide_tp_ops tx4938ide_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,
- .tf_load = tx4938ide_tf_load,
- .tf_read = tx4938ide_tf_read,
+ .dev_select = ide_dev_select,
+ .tf_load = ide_tf_load,
+ .tf_read = ide_tf_read,
.input_data = tx4938ide_input_data_swap,
.output_data = tx4938ide_output_data_swap,
#endif /* __BIG_ENDIAN */
static const struct ide_port_ops tx4938ide_port_ops = {
- .set_pio_mode = tx4938ide_set_pio_mode,
+ .set_pio_mode = tx4938ide_set_pio_mode,
};
static const struct ide_port_info tx4938ide_port_info __initdata = {
- .port_ops = &tx4938ide_port_ops,
+ .port_ops = &tx4938ide_port_ops,
#ifdef __BIG_ENDIAN
- .tp_ops = &tx4938ide_tp_ops,
+ .tp_ops = &tx4938ide_tp_ops,
#endif
- .host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
- .pio_mask = ATA_PIO5,
+ .host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
+ .pio_mask = ATA_PIO5,
+ .chipset = ide_generic,
};
static int __init tx4938ide_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;
struct tx4938ide_platform_info *pdata = pdev->dev.platform_data;
int irq, ret, i;
- unsigned long mapbase;
+ unsigned long mapbase, mapctl;
struct ide_port_info d = tx4938ide_port_info;
irq = platform_get_irq(pdev, 0);
return -ENODEV;
if (!devm_request_mem_region(&pdev->dev, res->start,
- res->end - res->start + 1, "tx4938ide"))
+ resource_size(res), "tx4938ide"))
return -EBUSY;
mapbase = (unsigned long)devm_ioremap(&pdev->dev, res->start,
- res->end - res->start + 1);
- if (!mapbase)
+ 8 << pdata->ioport_shift);
+ mapctl = (unsigned long)devm_ioremap(&pdev->dev,
+ res->start + 0x10000 +
+ (6 << pdata->ioport_shift),
+ 1 << pdata->ioport_shift);
+ if (!mapbase || !mapctl)
return -EBUSY;
memset(&hw, 0, sizeof(hw));
if (pdata->ioport_shift) {
unsigned long port = mapbase;
+ unsigned long ctl = mapctl;
hw.io_ports_array[0] = port;
#ifdef __BIG_ENDIAN
port++;
+ ctl++;
#endif
for (i = 1; i <= 7; i++)
hw.io_ports_array[i] =
port + (i << pdata->ioport_shift);
- hw.io_ports.ctl_addr =
- port + 0x10000 + (6 << pdata->ioport_shift);
+ hw.io_ports.ctl_addr = ctl;
} else
- ide_std_init_ports(&hw, mapbase, mapbase + 0x10006);
+ ide_std_init_ports(&hw, mapbase, mapctl);
hw.irq = irq;
hw.dev = &pdev->dev;
- pr_info("TX4938 IDE interface (base %#lx, irq %d)\n", mapbase, hw.irq);
+ pr_info("TX4938 IDE interface (base %#lx, ctl %#lx, irq %d)\n",
+ mapbase, mapctl, hw.irq);
if (pdata->gbus_clock)
tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, 0);
else
d.port_ops = NULL;
- ret = ide_host_add(&d, hws, &host);
- if (ret)
- return ret;
- platform_set_drvdata(pdev, host);
- return 0;
+ ret = ide_host_add(&d, hws, 1, &host);
+ if (!ret)
+ platform_set_drvdata(pdev, host);
+ return ret;
}
static int __exit tx4938ide_remove(struct platform_device *pdev)