forked from Minki/linux
471 lines
13 KiB
C
471 lines
13 KiB
C
/*
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* Copyright (C) 1998-2000 Michel Aubry
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* Copyright (C) 1998-2000 Andrzej Krzysztofowicz
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* Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
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* Copyright (C) 2007 Bartlomiej Zolnierkiewicz
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* Portions copyright (c) 2001 Sun Microsystems
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*
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*
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* RCC/ServerWorks IDE driver for Linux
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*
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* OSB4: `Open South Bridge' IDE Interface (fn 1)
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* supports UDMA mode 2 (33 MB/s)
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*
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* CSB5: `Champion South Bridge' IDE Interface (fn 1)
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* all revisions support UDMA mode 4 (66 MB/s)
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* revision A2.0 and up support UDMA mode 5 (100 MB/s)
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*
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* *** The CSB5 does not provide ANY register ***
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* *** to detect 80-conductor cable presence. ***
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*
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* CSB6: `Champion South Bridge' IDE Interface (optional: third channel)
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*
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* HT1000: AKA BCM5785 - Hypertransport Southbridge for Opteron systems. IDE
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* controller same as the CSB6. Single channel ATA100 only.
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*
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* Documentation:
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* Available under NDA only. Errata info very hard to get.
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*
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*/
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#include <linux/types.h>
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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/ide.h>
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#include <linux/init.h>
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#include <asm/io.h>
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#define DRV_NAME "serverworks"
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#define SVWKS_CSB5_REVISION_NEW 0x92 /* min PCI_REVISION_ID for UDMA5 (A2.0) */
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#define SVWKS_CSB6_REVISION 0xa0 /* min PCI_REVISION_ID for UDMA4 (A1.0) */
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/* Seagate Barracuda ATA IV Family drives in UDMA mode 5
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* can overrun their FIFOs when used with the CSB5 */
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static const char *svwks_bad_ata100[] = {
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"ST320011A",
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"ST340016A",
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"ST360021A",
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"ST380021A",
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NULL
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};
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static struct pci_dev *isa_dev;
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static int check_in_drive_lists (ide_drive_t *drive, const char **list)
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{
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char *m = (char *)&drive->id[ATA_ID_PROD];
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while (*list)
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if (!strcmp(*list++, m))
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return 1;
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return 0;
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}
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static u8 svwks_udma_filter(ide_drive_t *drive)
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{
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struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
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u8 mask = 0;
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if (dev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE)
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return 0x1f;
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if (dev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
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u32 reg = 0;
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if (isa_dev)
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pci_read_config_dword(isa_dev, 0x64, ®);
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/*
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* Don't enable UDMA on disk devices for the moment
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*/
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if(drive->media == ide_disk)
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return 0;
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/* Check the OSB4 DMA33 enable bit */
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return ((reg & 0x00004000) == 0x00004000) ? 0x07 : 0;
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} else if (dev->revision < SVWKS_CSB5_REVISION_NEW) {
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return 0x07;
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} else if (dev->revision >= SVWKS_CSB5_REVISION_NEW) {
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u8 btr = 0, mode;
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pci_read_config_byte(dev, 0x5A, &btr);
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mode = btr & 0x3;
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/* If someone decides to do UDMA133 on CSB5 the same
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issue will bite so be inclusive */
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if (mode > 2 && check_in_drive_lists(drive, svwks_bad_ata100))
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mode = 2;
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switch(mode) {
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case 3: mask = 0x3f; break;
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case 2: mask = 0x1f; break;
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case 1: mask = 0x07; break;
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default: mask = 0x00; break;
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}
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}
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if (((dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) ||
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(dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2)) &&
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(!(PCI_FUNC(dev->devfn) & 1)))
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mask = 0x1f;
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return mask;
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}
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static u8 svwks_csb_check (struct pci_dev *dev)
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{
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switch (dev->device) {
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case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE:
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case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE:
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case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2:
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case PCI_DEVICE_ID_SERVERWORKS_HT1000IDE:
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return 1;
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default:
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break;
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}
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return 0;
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}
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static void svwks_set_pio_mode(ide_drive_t *drive, const u8 pio)
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{
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static const u8 pio_modes[] = { 0x5d, 0x47, 0x34, 0x22, 0x20 };
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static const u8 drive_pci[] = { 0x41, 0x40, 0x43, 0x42 };
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struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
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pci_write_config_byte(dev, drive_pci[drive->dn], pio_modes[pio]);
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if (svwks_csb_check(dev)) {
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u16 csb_pio = 0;
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pci_read_config_word(dev, 0x4a, &csb_pio);
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csb_pio &= ~(0x0f << (4 * drive->dn));
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csb_pio |= (pio << (4 * drive->dn));
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pci_write_config_word(dev, 0x4a, csb_pio);
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}
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}
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static void svwks_set_dma_mode(ide_drive_t *drive, const u8 speed)
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{
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static const u8 udma_modes[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 };
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static const u8 dma_modes[] = { 0x77, 0x21, 0x20 };
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static const u8 drive_pci2[] = { 0x45, 0x44, 0x47, 0x46 };
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ide_hwif_t *hwif = drive->hwif;
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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u8 unit = drive->dn & 1;
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u8 ultra_enable = 0, ultra_timing = 0, dma_timing = 0;
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pci_read_config_byte(dev, (0x56|hwif->channel), &ultra_timing);
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pci_read_config_byte(dev, 0x54, &ultra_enable);
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ultra_timing &= ~(0x0F << (4*unit));
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ultra_enable &= ~(0x01 << drive->dn);
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if (speed >= XFER_UDMA_0) {
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dma_timing |= dma_modes[2];
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ultra_timing |= (udma_modes[speed - XFER_UDMA_0] << (4 * unit));
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ultra_enable |= (0x01 << drive->dn);
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} else if (speed >= XFER_MW_DMA_0)
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dma_timing |= dma_modes[speed - XFER_MW_DMA_0];
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pci_write_config_byte(dev, drive_pci2[drive->dn], dma_timing);
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pci_write_config_byte(dev, (0x56|hwif->channel), ultra_timing);
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pci_write_config_byte(dev, 0x54, ultra_enable);
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}
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static unsigned int init_chipset_svwks(struct pci_dev *dev)
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{
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unsigned int reg;
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u8 btr;
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/* force Master Latency Timer value to 64 PCICLKs */
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pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x40);
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/* OSB4 : South Bridge and IDE */
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if (dev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
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isa_dev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
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PCI_DEVICE_ID_SERVERWORKS_OSB4, NULL);
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if (isa_dev) {
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pci_read_config_dword(isa_dev, 0x64, ®);
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reg &= ~0x00002000; /* disable 600ns interrupt mask */
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if(!(reg & 0x00004000))
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printk(KERN_DEBUG DRV_NAME " %s: UDMA not BIOS "
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"enabled.\n", pci_name(dev));
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reg |= 0x00004000; /* enable UDMA/33 support */
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pci_write_config_dword(isa_dev, 0x64, reg);
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}
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}
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/* setup CSB5/CSB6 : South Bridge and IDE option RAID */
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else if ((dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE) ||
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(dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) ||
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(dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2)) {
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/* Third Channel Test */
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if (!(PCI_FUNC(dev->devfn) & 1)) {
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struct pci_dev * findev = NULL;
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u32 reg4c = 0;
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findev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
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PCI_DEVICE_ID_SERVERWORKS_CSB5, NULL);
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if (findev) {
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pci_read_config_dword(findev, 0x4C, ®4c);
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reg4c &= ~0x000007FF;
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reg4c |= 0x00000040;
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reg4c |= 0x00000020;
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pci_write_config_dword(findev, 0x4C, reg4c);
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pci_dev_put(findev);
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}
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outb_p(0x06, 0x0c00);
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dev->irq = inb_p(0x0c01);
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} else {
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struct pci_dev * findev = NULL;
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u8 reg41 = 0;
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findev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
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PCI_DEVICE_ID_SERVERWORKS_CSB6, NULL);
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if (findev) {
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pci_read_config_byte(findev, 0x41, ®41);
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reg41 &= ~0x40;
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pci_write_config_byte(findev, 0x41, reg41);
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pci_dev_put(findev);
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}
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/*
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* This is a device pin issue on CSB6.
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* Since there will be a future raid mode,
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* early versions of the chipset require the
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* interrupt pin to be set, and it is a compatibility
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* mode issue.
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*/
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if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE)
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dev->irq = 0;
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}
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// pci_read_config_dword(dev, 0x40, &pioreg)
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// pci_write_config_dword(dev, 0x40, 0x99999999);
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// pci_read_config_dword(dev, 0x44, &dmareg);
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// pci_write_config_dword(dev, 0x44, 0xFFFFFFFF);
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/* setup the UDMA Control register
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*
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* 1. clear bit 6 to enable DMA
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* 2. enable DMA modes with bits 0-1
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* 00 : legacy
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* 01 : udma2
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* 10 : udma2/udma4
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* 11 : udma2/udma4/udma5
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*/
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pci_read_config_byte(dev, 0x5A, &btr);
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btr &= ~0x40;
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if (!(PCI_FUNC(dev->devfn) & 1))
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btr |= 0x2;
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else
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btr |= (dev->revision >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
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pci_write_config_byte(dev, 0x5A, btr);
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}
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/* Setup HT1000 SouthBridge Controller - Single Channel Only */
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else if (dev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE) {
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pci_read_config_byte(dev, 0x5A, &btr);
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btr &= ~0x40;
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btr |= 0x3;
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pci_write_config_byte(dev, 0x5A, btr);
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}
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return dev->irq;
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}
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static u8 ata66_svwks_svwks(ide_hwif_t *hwif)
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{
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return ATA_CBL_PATA80;
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}
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/* On Dell PowerEdge servers with a CSB5/CSB6, the top two bits
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* of the subsystem device ID indicate presence of an 80-pin cable.
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* Bit 15 clear = secondary IDE channel does not have 80-pin cable.
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* Bit 15 set = secondary IDE channel has 80-pin cable.
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* Bit 14 clear = primary IDE channel does not have 80-pin cable.
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* Bit 14 set = primary IDE channel has 80-pin cable.
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*/
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static u8 ata66_svwks_dell(ide_hwif_t *hwif)
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{
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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if (dev->subsystem_vendor == PCI_VENDOR_ID_DELL &&
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dev->vendor == PCI_VENDOR_ID_SERVERWORKS &&
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(dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE ||
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dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE))
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return ((1 << (hwif->channel + 14)) &
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dev->subsystem_device) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
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return ATA_CBL_PATA40;
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}
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/* Sun Cobalt Alpine hardware avoids the 80-pin cable
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* detect issue by attaching the drives directly to the board.
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* This check follows the Dell precedent (how scary is that?!)
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*
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* WARNING: this only works on Alpine hardware!
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*/
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static u8 ata66_svwks_cobalt(ide_hwif_t *hwif)
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{
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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if (dev->subsystem_vendor == PCI_VENDOR_ID_SUN &&
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dev->vendor == PCI_VENDOR_ID_SERVERWORKS &&
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dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE)
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return ((1 << (hwif->channel + 14)) &
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dev->subsystem_device) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
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return ATA_CBL_PATA40;
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}
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static u8 svwks_cable_detect(ide_hwif_t *hwif)
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{
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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/* Server Works */
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if (dev->subsystem_vendor == PCI_VENDOR_ID_SERVERWORKS)
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return ata66_svwks_svwks (hwif);
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/* Dell PowerEdge */
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if (dev->subsystem_vendor == PCI_VENDOR_ID_DELL)
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return ata66_svwks_dell (hwif);
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/* Cobalt Alpine */
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if (dev->subsystem_vendor == PCI_VENDOR_ID_SUN)
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return ata66_svwks_cobalt (hwif);
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/* Per Specified Design by OEM, and ASIC Architect */
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if ((dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) ||
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(dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2))
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return ATA_CBL_PATA80;
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return ATA_CBL_PATA40;
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}
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static const struct ide_port_ops osb4_port_ops = {
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.set_pio_mode = svwks_set_pio_mode,
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.set_dma_mode = svwks_set_dma_mode,
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.udma_filter = svwks_udma_filter,
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};
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static const struct ide_port_ops svwks_port_ops = {
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.set_pio_mode = svwks_set_pio_mode,
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.set_dma_mode = svwks_set_dma_mode,
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.udma_filter = svwks_udma_filter,
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.cable_detect = svwks_cable_detect,
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};
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#define IDE_HFLAGS_SVWKS IDE_HFLAG_LEGACY_IRQS
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static const struct ide_port_info serverworks_chipsets[] __devinitdata = {
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{ /* 0: OSB4 */
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.name = DRV_NAME,
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.init_chipset = init_chipset_svwks,
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.port_ops = &osb4_port_ops,
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.host_flags = IDE_HFLAGS_SVWKS,
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.pio_mask = ATA_PIO4,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = 0x00, /* UDMA is problematic on OSB4 */
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},
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{ /* 1: CSB5 */
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.name = DRV_NAME,
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.init_chipset = init_chipset_svwks,
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.port_ops = &svwks_port_ops,
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.host_flags = IDE_HFLAGS_SVWKS,
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.pio_mask = ATA_PIO4,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = ATA_UDMA5,
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},
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{ /* 2: CSB6 */
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.name = DRV_NAME,
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.init_chipset = init_chipset_svwks,
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.port_ops = &svwks_port_ops,
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.host_flags = IDE_HFLAGS_SVWKS,
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.pio_mask = ATA_PIO4,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = ATA_UDMA5,
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},
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{ /* 3: CSB6-2 */
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.name = DRV_NAME,
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.init_chipset = init_chipset_svwks,
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.port_ops = &svwks_port_ops,
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.host_flags = IDE_HFLAGS_SVWKS | IDE_HFLAG_SINGLE,
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.pio_mask = ATA_PIO4,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = ATA_UDMA5,
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},
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{ /* 4: HT1000 */
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.name = DRV_NAME,
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.init_chipset = init_chipset_svwks,
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.port_ops = &svwks_port_ops,
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.host_flags = IDE_HFLAGS_SVWKS | IDE_HFLAG_SINGLE,
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.pio_mask = ATA_PIO4,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = ATA_UDMA5,
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}
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};
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/**
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* svwks_init_one - called when a OSB/CSB is found
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* @dev: the svwks device
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* @id: the matching pci id
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*
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* Called when the PCI registration layer (or the IDE initialization)
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* finds a device matching our IDE device tables.
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*/
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static int __devinit svwks_init_one(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 = serverworks_chipsets[idx];
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if (idx == 1)
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d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
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else if (idx == 2 || idx == 3) {
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if ((PCI_FUNC(dev->devfn) & 1) == 0) {
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if (pci_resource_start(dev, 0) != 0x01f1)
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d.host_flags |= IDE_HFLAG_NON_BOOTABLE;
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d.host_flags |= IDE_HFLAG_SINGLE;
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} else
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d.host_flags &= ~IDE_HFLAG_SINGLE;
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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 svwks_pci_tbl[] = {
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{ PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_OSB4IDE), 0 },
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{ PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE), 1 },
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{ PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6IDE), 2 },
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{ PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2), 3 },
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{ PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000IDE), 4 },
|
|
{ 0, },
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, svwks_pci_tbl);
|
|
|
|
static struct pci_driver svwks_pci_driver = {
|
|
.name = "Serverworks_IDE",
|
|
.id_table = svwks_pci_tbl,
|
|
.probe = svwks_init_one,
|
|
.remove = ide_pci_remove,
|
|
.suspend = ide_pci_suspend,
|
|
.resume = ide_pci_resume,
|
|
};
|
|
|
|
static int __init svwks_ide_init(void)
|
|
{
|
|
return ide_pci_register_driver(&svwks_pci_driver);
|
|
}
|
|
|
|
static void __exit svwks_ide_exit(void)
|
|
{
|
|
pci_unregister_driver(&svwks_pci_driver);
|
|
}
|
|
|
|
module_init(svwks_ide_init);
|
|
module_exit(svwks_ide_exit);
|
|
|
|
MODULE_AUTHOR("Michael Aubry. Andrzej Krzysztofowicz, Andre Hedrick");
|
|
MODULE_DESCRIPTION("PCI driver module for Serverworks OSB4/CSB5/CSB6 IDE");
|
|
MODULE_LICENSE("GPL");
|