344 lines
9.9 KiB
C
344 lines
9.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* AMD 755/756/766/8111 and nVidia nForce/2/2s/3/3s/CK804/MCP04
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* IDE driver for Linux.
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*
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* Copyright (c) 2000-2002 Vojtech Pavlik
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* Copyright (c) 2007-2010 Bartlomiej Zolnierkiewicz
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*
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* Based on the work of:
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* Andre Hedrick
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/ide.h>
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#define DRV_NAME "amd74xx"
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enum {
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AMD_IDE_CONFIG = 0x41,
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AMD_CABLE_DETECT = 0x42,
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AMD_DRIVE_TIMING = 0x48,
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AMD_8BIT_TIMING = 0x4e,
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AMD_ADDRESS_SETUP = 0x4c,
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AMD_UDMA_TIMING = 0x50,
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};
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static unsigned int amd_80w;
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static unsigned int amd_clock;
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static char *amd_dma[] = { "16", "25", "33", "44", "66", "100", "133" };
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static unsigned char amd_cyc2udma[] = { 6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 7 };
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static inline u8 amd_offset(struct pci_dev *dev)
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{
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return (dev->vendor == PCI_VENDOR_ID_NVIDIA) ? 0x10 : 0;
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}
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/*
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* amd_set_speed() writes timing values to the chipset registers
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*/
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static void amd_set_speed(struct pci_dev *dev, u8 dn, u8 udma_mask,
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struct ide_timing *timing)
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{
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u8 t = 0, offset = amd_offset(dev);
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pci_read_config_byte(dev, AMD_ADDRESS_SETUP + offset, &t);
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t = (t & ~(3 << ((3 - dn) << 1))) | ((clamp_val(timing->setup, 1, 4) - 1) << ((3 - dn) << 1));
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pci_write_config_byte(dev, AMD_ADDRESS_SETUP + offset, t);
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pci_write_config_byte(dev, AMD_8BIT_TIMING + offset + (1 - (dn >> 1)),
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((clamp_val(timing->act8b, 1, 16) - 1) << 4) | (clamp_val(timing->rec8b, 1, 16) - 1));
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pci_write_config_byte(dev, AMD_DRIVE_TIMING + offset + (3 - dn),
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((clamp_val(timing->active, 1, 16) - 1) << 4) | (clamp_val(timing->recover, 1, 16) - 1));
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switch (udma_mask) {
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case ATA_UDMA2: t = timing->udma ? (0xc0 | (clamp_val(timing->udma, 2, 5) - 2)) : 0x03; break;
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case ATA_UDMA4: t = timing->udma ? (0xc0 | amd_cyc2udma[clamp_val(timing->udma, 2, 10)]) : 0x03; break;
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case ATA_UDMA5: t = timing->udma ? (0xc0 | amd_cyc2udma[clamp_val(timing->udma, 1, 10)]) : 0x03; break;
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case ATA_UDMA6: t = timing->udma ? (0xc0 | amd_cyc2udma[clamp_val(timing->udma, 1, 15)]) : 0x03; break;
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default: return;
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}
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if (timing->udma)
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pci_write_config_byte(dev, AMD_UDMA_TIMING + offset + 3 - dn, t);
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}
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/*
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* amd_set_drive() computes timing values and configures the chipset
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* to a desired transfer mode. It also can be called by upper layers.
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*/
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static void amd_set_drive(ide_hwif_t *hwif, ide_drive_t *drive)
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{
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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ide_drive_t *peer = ide_get_pair_dev(drive);
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struct ide_timing t, p;
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int T, UT;
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u8 udma_mask = hwif->ultra_mask;
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const u8 speed = drive->dma_mode;
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T = 1000000000 / amd_clock;
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UT = (udma_mask == ATA_UDMA2) ? T : (T / 2);
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ide_timing_compute(drive, speed, &t, T, UT);
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if (peer) {
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ide_timing_compute(peer, peer->pio_mode, &p, T, UT);
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ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT);
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}
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if (speed == XFER_UDMA_5 && amd_clock <= 33333) t.udma = 1;
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if (speed == XFER_UDMA_6 && amd_clock <= 33333) t.udma = 15;
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amd_set_speed(dev, drive->dn, udma_mask, &t);
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}
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/*
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* amd_set_pio_mode() is a callback from upper layers for PIO-only tuning.
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*/
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static void amd_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
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{
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drive->dma_mode = drive->pio_mode;
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amd_set_drive(hwif, drive);
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}
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static void amd7409_cable_detect(struct pci_dev *dev)
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{
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/* no host side cable detection */
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amd_80w = 0x03;
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}
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static void amd7411_cable_detect(struct pci_dev *dev)
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{
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int i;
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u32 u = 0;
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u8 t = 0, offset = amd_offset(dev);
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pci_read_config_byte(dev, AMD_CABLE_DETECT + offset, &t);
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pci_read_config_dword(dev, AMD_UDMA_TIMING + offset, &u);
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amd_80w = ((t & 0x3) ? 1 : 0) | ((t & 0xc) ? 2 : 0);
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for (i = 24; i >= 0; i -= 8)
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if (((u >> i) & 4) && !(amd_80w & (1 << (1 - (i >> 4))))) {
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printk(KERN_WARNING DRV_NAME " %s: BIOS didn't set "
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"cable bits correctly. Enabling workaround.\n",
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pci_name(dev));
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amd_80w |= (1 << (1 - (i >> 4)));
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}
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}
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/*
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* The initialization callback. Initialize drive independent registers.
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*/
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static int init_chipset_amd74xx(struct pci_dev *dev)
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{
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u8 t = 0, offset = amd_offset(dev);
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/*
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* Check 80-wire cable presence.
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*/
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if (dev->vendor == PCI_VENDOR_ID_AMD &&
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dev->device == PCI_DEVICE_ID_AMD_COBRA_7401)
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; /* no UDMA > 2 */
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else if (dev->vendor == PCI_VENDOR_ID_AMD &&
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dev->device == PCI_DEVICE_ID_AMD_VIPER_7409)
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amd7409_cable_detect(dev);
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else
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amd7411_cable_detect(dev);
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/*
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* Take care of prefetch & postwrite.
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*/
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pci_read_config_byte(dev, AMD_IDE_CONFIG + offset, &t);
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/*
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* Check for broken FIFO support.
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*/
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if (dev->vendor == PCI_VENDOR_ID_AMD &&
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dev->device == PCI_DEVICE_ID_AMD_VIPER_7411)
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t &= 0x0f;
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else
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t |= 0xf0;
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pci_write_config_byte(dev, AMD_IDE_CONFIG + offset, t);
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return 0;
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}
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static u8 amd_cable_detect(ide_hwif_t *hwif)
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{
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if ((amd_80w >> hwif->channel) & 1)
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return ATA_CBL_PATA80;
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else
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return ATA_CBL_PATA40;
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}
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static const struct ide_port_ops amd_port_ops = {
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.set_pio_mode = amd_set_pio_mode,
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.set_dma_mode = amd_set_drive,
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.cable_detect = amd_cable_detect,
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};
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#define IDE_HFLAGS_AMD \
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(IDE_HFLAG_PIO_NO_BLACKLIST | \
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IDE_HFLAG_POST_SET_MODE | \
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IDE_HFLAG_IO_32BIT | \
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IDE_HFLAG_UNMASK_IRQS)
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#define DECLARE_AMD_DEV(swdma, udma) \
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{ \
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.name = DRV_NAME, \
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.init_chipset = init_chipset_amd74xx, \
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.enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}}, \
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.port_ops = &amd_port_ops, \
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.host_flags = IDE_HFLAGS_AMD, \
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.pio_mask = ATA_PIO5, \
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.swdma_mask = swdma, \
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.mwdma_mask = ATA_MWDMA2, \
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.udma_mask = udma, \
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}
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#define DECLARE_NV_DEV(udma) \
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{ \
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.name = DRV_NAME, \
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.init_chipset = init_chipset_amd74xx, \
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.enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}}, \
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.port_ops = &amd_port_ops, \
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.host_flags = IDE_HFLAGS_AMD, \
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.pio_mask = ATA_PIO5, \
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.swdma_mask = ATA_SWDMA2, \
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.mwdma_mask = ATA_MWDMA2, \
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.udma_mask = udma, \
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}
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static const struct ide_port_info amd74xx_chipsets[] = {
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/* 0: AMD7401 */ DECLARE_AMD_DEV(0x00, ATA_UDMA2),
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/* 1: AMD7409 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA4),
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/* 2: AMD7411/7441 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA5),
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/* 3: AMD8111 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA6),
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/* 4: NFORCE */ DECLARE_NV_DEV(ATA_UDMA5),
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/* 5: >= NFORCE2 */ DECLARE_NV_DEV(ATA_UDMA6),
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/* 6: AMD5536 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA5),
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};
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static int amd74xx_probe(struct pci_dev *dev, const struct pci_device_id *id)
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{
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struct ide_port_info d;
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u8 idx = id->driver_data;
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d = amd74xx_chipsets[idx];
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/*
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* Check for bad SWDMA and incorrectly wired Serenade mainboards.
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*/
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if (idx == 1) {
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if (dev->revision <= 7)
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d.swdma_mask = 0;
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d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
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} else if (idx == 3) {
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if (dev->subsystem_vendor == PCI_VENDOR_ID_AMD &&
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dev->subsystem_device == PCI_DEVICE_ID_AMD_SERENADE)
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d.udma_mask = ATA_UDMA5;
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}
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/*
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* It seems that on some nVidia controllers using AltStatus
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* register can be unreliable so default to Status register
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* if the device is in Compatibility Mode.
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*/
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if (dev->vendor == PCI_VENDOR_ID_NVIDIA &&
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ide_pci_is_in_compatibility_mode(dev))
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d.host_flags |= IDE_HFLAG_BROKEN_ALTSTATUS;
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printk(KERN_INFO "%s %s: UDMA%s controller\n",
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d.name, pci_name(dev), amd_dma[fls(d.udma_mask) - 1]);
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/*
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* Determine the system bus clock.
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*/
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amd_clock = (ide_pci_clk ? ide_pci_clk : 33) * 1000;
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switch (amd_clock) {
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case 33000: amd_clock = 33333; break;
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case 37000: amd_clock = 37500; break;
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case 41000: amd_clock = 41666; break;
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}
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if (amd_clock < 20000 || amd_clock > 50000) {
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printk(KERN_WARNING "%s: User given PCI clock speed impossible"
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" (%d), using 33 MHz instead.\n",
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d.name, amd_clock);
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amd_clock = 33333;
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}
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return ide_pci_init_one(dev, &d, NULL);
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}
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static const struct pci_device_id amd74xx_pci_tbl[] = {
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{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_COBRA_7401), 0 },
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{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7409), 1 },
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{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7411), 2 },
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{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_OPUS_7441), 2 },
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{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_8111_IDE), 3 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_IDE), 4 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_IDE), 5 },
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#ifdef CONFIG_BLK_DEV_IDE_SATA
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA), 5 },
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#endif
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3_IDE), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_IDE), 5 },
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#ifdef CONFIG_BLK_DEV_IDE_SATA
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2), 5 },
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#endif
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_IDE), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_IDE), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP67_IDE), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_IDE), 5 },
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{ PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE), 5 },
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{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5536_IDE), 6 },
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{ 0, },
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};
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MODULE_DEVICE_TABLE(pci, amd74xx_pci_tbl);
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static struct pci_driver amd74xx_pci_driver = {
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.name = "AMD_IDE",
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.id_table = amd74xx_pci_tbl,
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.probe = amd74xx_probe,
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.remove = ide_pci_remove,
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.suspend = ide_pci_suspend,
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.resume = ide_pci_resume,
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};
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static int __init amd74xx_ide_init(void)
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{
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return ide_pci_register_driver(&amd74xx_pci_driver);
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}
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static void __exit amd74xx_ide_exit(void)
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{
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pci_unregister_driver(&amd74xx_pci_driver);
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}
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module_init(amd74xx_ide_init);
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module_exit(amd74xx_ide_exit);
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MODULE_AUTHOR("Vojtech Pavlik, Bartlomiej Zolnierkiewicz");
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MODULE_DESCRIPTION("AMD PCI IDE driver");
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MODULE_LICENSE("GPL");
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