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Subject[PATCH 59/68] sc1200: convert to ide2libata
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] sc1200: convert to ide2libata

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/sc1200.c | 113 +--------------------------------------------------
1 file changed, 4 insertions(+), 109 deletions(-)

Index: b/drivers/ide/sc1200.c
===================================================================
--- a/drivers/ide/sc1200.c
+++ b/drivers/ide/sc1200.c
@@ -23,73 +23,8 @@

#define DRV_NAME "sc1200"

-#define SC1200_REV_A 0x00
-#define SC1200_REV_B1 0x01
-#define SC1200_REV_B3 0x02
-#define SC1200_REV_C1 0x03
-#define SC1200_REV_D1 0x04
-
-#define PCI_CLK_33 0x00
-#define PCI_CLK_48 0x01
-#define PCI_CLK_66 0x02
-#define PCI_CLK_33A 0x03
-
-static unsigned short sc1200_get_pci_clock (void)
-{
- unsigned char chip_id, silicon_revision;
- unsigned int pci_clock;
- /*
- * Check the silicon revision, as not all versions of the chip
- * have the register with the fast PCI bus timings.
- */
- chip_id = inb (0x903c);
- silicon_revision = inb (0x903d);
-
- // Read the fast pci clock frequency
- if (chip_id == 0x04 && silicon_revision < SC1200_REV_B1) {
- pci_clock = PCI_CLK_33;
- } else {
- // check clock generator configuration (cfcc)
- // the clock is in bits 8 and 9 of this word
-
- pci_clock = inw (0x901e);
- pci_clock >>= 8;
- pci_clock &= 0x03;
- if (pci_clock == PCI_CLK_33A)
- pci_clock = PCI_CLK_33;
- }
- return pci_clock;
-}
-
-/*
- * Here are the standard PIO mode 0-4 timings for each "format".
- * Format-0 uses fast data reg timings, with slower command reg timings.
- * Format-1 uses fast timings for all registers, but won't work with all drives.
- */
-static const unsigned int sc1200_pio_timings[4][5] =
- {{0x00009172, 0x00012171, 0x00020080, 0x00032010, 0x00040010}, // format0 33Mhz
- {0xd1329172, 0x71212171, 0x30200080, 0x20102010, 0x00100010}, // format1, 33Mhz
- {0xfaa3f4f3, 0xc23232b2, 0x513101c1, 0x31213121, 0x10211021}, // format1, 48Mhz
- {0xfff4fff4, 0xf35353d3, 0x814102f1, 0x42314231, 0x11311131}}; // format1, 66Mhz
-
-/*
- * After chip reset, the PIO timings are set to 0x00009172, which is not valid.
- */
-//#define SC1200_BAD_PIO(timings) (((timings)&~0x80000000)==0x00009172)
-
-static void sc1200_tunepio(ide_drive_t *drive, u8 pio)
-{
- ide_hwif_t *hwif = drive->hwif;
- struct pci_dev *pdev = to_pci_dev(hwif->dev);
- unsigned int basereg = hwif->channel ? 0x50 : 0x40, format = 0;
-
- pci_read_config_dword(pdev, basereg + 4, &format);
- format = (format >> 31) & 1;
- if (format)
- format += sc1200_get_pci_clock();
- pci_write_config_dword(pdev, basereg + ((drive->dn & 1) << 3),
- sc1200_pio_timings[format][pio]);
-}
+#include <linux/ide2libata.h>
+#include "../ata/pata_sc1200.h"

/*
* The SC1200 specifies that two drives sharing a cable cannot mix
@@ -122,46 +57,6 @@ out:
return mask;
}

-static void sc1200_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- struct pci_dev *dev = to_pci_dev(hwif->dev);
- unsigned int reg, timings;
- unsigned short pci_clock;
- unsigned int basereg = hwif->channel ? 0x50 : 0x40;
- const u8 mode = drive->dma_mode;
-
- static const u32 udma_timing[3][3] = {
- { 0x00921250, 0x00911140, 0x00911030 },
- { 0x00932470, 0x00922260, 0x00922140 },
- { 0x009436a1, 0x00933481, 0x00923261 },
- };
-
- static const u32 mwdma_timing[3][3] = {
- { 0x00077771, 0x00012121, 0x00002020 },
- { 0x000bbbb2, 0x00024241, 0x00013131 },
- { 0x000ffff3, 0x00035352, 0x00015151 },
- };
-
- pci_clock = sc1200_get_pci_clock();
-
- /*
- * Note that each DMA mode has several timings associated with it.
- * The correct timing depends on the fast PCI clock freq.
- */
-
- if (mode >= XFER_UDMA_0)
- timings = udma_timing[pci_clock][mode - XFER_UDMA_0];
- else
- timings = mwdma_timing[pci_clock][mode - XFER_MW_DMA_0];
-
- if ((drive->dn & 1) == 0) {
- pci_read_config_dword(dev, basereg + 4, &reg);
- timings |= reg & 0x80000000; /* preserve PIO format bit */
- pci_write_config_dword(dev, basereg + 4, timings);
- } else
- pci_write_config_dword(dev, basereg + 12, timings);
-}
-
/* Replacement for the standard ide_dma_end action in
* dma_proc.
*
@@ -218,7 +113,7 @@ static void sc1200_set_pio_mode(ide_hwif
return;
}

- sc1200_tunepio(drive, pio);
+ sc1200_set_piomode(hwif, drive);
}

#ifdef CONFIG_PM
@@ -275,7 +170,7 @@ static int sc1200_resume (struct pci_dev

static const struct ide_port_ops sc1200_port_ops = {
.set_pio_mode = sc1200_set_pio_mode,
- .set_dma_mode = sc1200_set_dma_mode,
+ .set_dma_mode = sc1200_set_dmamode,
.udma_filter = sc1200_udma_filter,
};


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