1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
914 lines
24 KiB
C
914 lines
24 KiB
C
/*
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* linux/drivers/ide/pci/alim15x3.c Version 0.17 2003/01/02
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*
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* Copyright (C) 1998-2000 Michel Aubry, Maintainer
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* Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer
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* Copyright (C) 1999-2000 CJ, cjtsai@ali.com.tw, Maintainer
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*
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* Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org)
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* May be copied or modified under the terms of the GNU General Public License
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* Copyright (C) 2002 Alan Cox <alan@redhat.com>
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* ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw>
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*
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* (U)DMA capable version of ali 1533/1543(C), 1535(D)
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*
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**********************************************************************
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* 9/7/99 --Parts from the above author are included and need to be
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* converted into standard interface, once I finish the thought.
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*
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* Recent changes
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* Don't use LBA48 mode on ALi <= 0xC4
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* Don't poke 0x79 with a non ALi northbridge
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* Don't flip undefined bits on newer chipsets (fix Fujitsu laptop hang)
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* Allow UDMA6 on revisions > 0xC4
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*
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* Documentation
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* Chipset documentation available under NDA only
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*
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/hdreg.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 DISPLAY_ALI_TIMINGS
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/*
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* ALi devices are not plug in. Otherwise these static values would
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* need to go. They ought to go away anyway
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*/
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static u8 m5229_revision;
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static u8 chip_is_1543c_e;
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static struct pci_dev *isa_dev;
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#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS)
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#include <linux/stat.h>
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#include <linux/proc_fs.h>
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static u8 ali_proc = 0;
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static struct pci_dev *bmide_dev;
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static char *fifo[4] = {
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"FIFO Off",
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"FIFO On ",
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"DMA mode",
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"PIO mode" };
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static char *udmaT[8] = {
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"1.5T",
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" 2T",
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"2.5T",
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" 3T",
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"3.5T",
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" 4T",
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" 6T",
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" 8T"
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};
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static char *channel_status[8] = {
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"OK ",
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"busy ",
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"DRQ ",
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"DRQ busy ",
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"error ",
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"error busy ",
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"error DRQ ",
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"error DRQ busy"
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};
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/**
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* ali_get_info - generate proc file for ALi IDE
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* @buffer: buffer to fill
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* @addr: address of user start in buffer
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* @offset: offset into 'file'
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* @count: buffer count
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*
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* Walks the Ali devices and outputs summary data on the tuning and
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* anything else that will help with debugging
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*/
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static int ali_get_info (char *buffer, char **addr, off_t offset, int count)
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{
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unsigned long bibma;
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u8 reg53h, reg5xh, reg5yh, reg5xh1, reg5yh1, c0, c1, rev, tmp;
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char *q, *p = buffer;
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/* fetch rev. */
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pci_read_config_byte(bmide_dev, 0x08, &rev);
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if (rev >= 0xc1) /* M1543C or newer */
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udmaT[7] = " ???";
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else
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fifo[3] = " ??? ";
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/* first fetch bibma: */
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bibma = pci_resource_start(bmide_dev, 4);
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/*
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* at that point bibma+0x2 et bibma+0xa are byte
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* registers to investigate:
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*/
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c0 = inb(bibma + 0x02);
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c1 = inb(bibma + 0x0a);
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p += sprintf(p,
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"\n Ali M15x3 Chipset.\n");
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p += sprintf(p,
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" ------------------\n");
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pci_read_config_byte(bmide_dev, 0x78, ®53h);
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p += sprintf(p, "PCI Clock: %d.\n", reg53h);
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pci_read_config_byte(bmide_dev, 0x53, ®53h);
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p += sprintf(p,
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"CD_ROM FIFO:%s, CD_ROM DMA:%s\n",
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(reg53h & 0x02) ? "Yes" : "No ",
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(reg53h & 0x01) ? "Yes" : "No " );
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pci_read_config_byte(bmide_dev, 0x74, ®53h);
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p += sprintf(p,
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"FIFO Status: contains %d Words, runs%s%s\n\n",
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(reg53h & 0x3f),
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(reg53h & 0x40) ? " OVERWR" : "",
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(reg53h & 0x80) ? " OVERRD." : "." );
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p += sprintf(p,
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"-------------------primary channel"
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"-------------------secondary channel"
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"---------\n\n");
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pci_read_config_byte(bmide_dev, 0x09, ®53h);
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p += sprintf(p,
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"channel status: %s"
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" %s\n",
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(reg53h & 0x20) ? "On " : "Off",
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(reg53h & 0x10) ? "On " : "Off" );
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p += sprintf(p,
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"both channels togth: %s"
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" %s\n",
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(c0&0x80) ? "No " : "Yes",
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(c1&0x80) ? "No " : "Yes" );
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pci_read_config_byte(bmide_dev, 0x76, ®53h);
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p += sprintf(p,
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"Channel state: %s %s\n",
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channel_status[reg53h & 0x07],
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channel_status[(reg53h & 0x70) >> 4] );
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pci_read_config_byte(bmide_dev, 0x58, ®5xh);
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pci_read_config_byte(bmide_dev, 0x5c, ®5yh);
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p += sprintf(p,
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"Add. Setup Timing: %dT"
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" %dT\n",
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(reg5xh & 0x07) ? (reg5xh & 0x07) : 8,
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(reg5yh & 0x07) ? (reg5yh & 0x07) : 8 );
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pci_read_config_byte(bmide_dev, 0x59, ®5xh);
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pci_read_config_byte(bmide_dev, 0x5d, ®5yh);
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p += sprintf(p,
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"Command Act. Count: %dT"
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" %dT\n"
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"Command Rec. Count: %dT"
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" %dT\n\n",
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(reg5xh & 0x70) ? ((reg5xh & 0x70) >> 4) : 8,
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(reg5yh & 0x70) ? ((reg5yh & 0x70) >> 4) : 8,
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(reg5xh & 0x0f) ? (reg5xh & 0x0f) : 16,
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(reg5yh & 0x0f) ? (reg5yh & 0x0f) : 16 );
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p += sprintf(p,
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"----------------drive0-----------drive1"
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"------------drive0-----------drive1------\n\n");
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p += sprintf(p,
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"DMA enabled: %s %s"
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" %s %s\n",
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(c0&0x20) ? "Yes" : "No ",
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(c0&0x40) ? "Yes" : "No ",
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(c1&0x20) ? "Yes" : "No ",
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(c1&0x40) ? "Yes" : "No " );
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pci_read_config_byte(bmide_dev, 0x54, ®5xh);
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pci_read_config_byte(bmide_dev, 0x55, ®5yh);
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q = "FIFO threshold: %2d Words %2d Words"
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" %2d Words %2d Words\n";
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if (rev < 0xc1) {
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if ((rev == 0x20) &&
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(pci_read_config_byte(bmide_dev, 0x4f, &tmp), (tmp &= 0x20))) {
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p += sprintf(p, q, 8, 8, 8, 8);
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} else {
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p += sprintf(p, q,
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(reg5xh & 0x03) + 12,
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((reg5xh & 0x30)>>4) + 12,
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(reg5yh & 0x03) + 12,
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((reg5yh & 0x30)>>4) + 12 );
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}
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} else {
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int t1 = (tmp = (reg5xh & 0x03)) ? (tmp << 3) : 4;
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int t2 = (tmp = ((reg5xh & 0x30)>>4)) ? (tmp << 3) : 4;
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int t3 = (tmp = (reg5yh & 0x03)) ? (tmp << 3) : 4;
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int t4 = (tmp = ((reg5yh & 0x30)>>4)) ? (tmp << 3) : 4;
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p += sprintf(p, q, t1, t2, t3, t4);
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}
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#if 0
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p += sprintf(p,
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"FIFO threshold: %2d Words %2d Words"
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" %2d Words %2d Words\n",
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(reg5xh & 0x03) + 12,
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((reg5xh & 0x30)>>4) + 12,
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(reg5yh & 0x03) + 12,
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((reg5yh & 0x30)>>4) + 12 );
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#endif
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p += sprintf(p,
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"FIFO mode: %s %s %s %s\n",
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fifo[((reg5xh & 0x0c) >> 2)],
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fifo[((reg5xh & 0xc0) >> 6)],
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fifo[((reg5yh & 0x0c) >> 2)],
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fifo[((reg5yh & 0xc0) >> 6)] );
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pci_read_config_byte(bmide_dev, 0x5a, ®5xh);
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pci_read_config_byte(bmide_dev, 0x5b, ®5xh1);
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pci_read_config_byte(bmide_dev, 0x5e, ®5yh);
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pci_read_config_byte(bmide_dev, 0x5f, ®5yh1);
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p += sprintf(p,/*
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"------------------drive0-----------drive1"
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"------------drive0-----------drive1------\n")*/
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"Dt RW act. Cnt %2dT %2dT"
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" %2dT %2dT\n"
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"Dt RW rec. Cnt %2dT %2dT"
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" %2dT %2dT\n\n",
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(reg5xh & 0x70) ? ((reg5xh & 0x70) >> 4) : 8,
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(reg5xh1 & 0x70) ? ((reg5xh1 & 0x70) >> 4) : 8,
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(reg5yh & 0x70) ? ((reg5yh & 0x70) >> 4) : 8,
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(reg5yh1 & 0x70) ? ((reg5yh1 & 0x70) >> 4) : 8,
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(reg5xh & 0x0f) ? (reg5xh & 0x0f) : 16,
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(reg5xh1 & 0x0f) ? (reg5xh1 & 0x0f) : 16,
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(reg5yh & 0x0f) ? (reg5yh & 0x0f) : 16,
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(reg5yh1 & 0x0f) ? (reg5yh1 & 0x0f) : 16 );
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p += sprintf(p,
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"-----------------------------------UDMA Timings"
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"--------------------------------\n\n");
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pci_read_config_byte(bmide_dev, 0x56, ®5xh);
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pci_read_config_byte(bmide_dev, 0x57, ®5yh);
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p += sprintf(p,
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"UDMA: %s %s"
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" %s %s\n"
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"UDMA timings: %s %s"
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" %s %s\n\n",
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(reg5xh & 0x08) ? "OK" : "No",
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(reg5xh & 0x80) ? "OK" : "No",
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(reg5yh & 0x08) ? "OK" : "No",
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(reg5yh & 0x80) ? "OK" : "No",
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udmaT[(reg5xh & 0x07)],
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udmaT[(reg5xh & 0x70) >> 4],
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udmaT[reg5yh & 0x07],
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udmaT[(reg5yh & 0x70) >> 4] );
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return p-buffer; /* => must be less than 4k! */
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}
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#endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) */
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/**
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* ali15x3_tune_drive - set up a drive
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* @drive: drive to tune
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* @pio: unused
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*
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* Select the best PIO timing for the drive in question. Then
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* program the controller for this drive set up
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*/
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static void ali15x3_tune_drive (ide_drive_t *drive, u8 pio)
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{
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ide_pio_data_t d;
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ide_hwif_t *hwif = HWIF(drive);
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struct pci_dev *dev = hwif->pci_dev;
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int s_time, a_time, c_time;
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u8 s_clc, a_clc, r_clc;
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unsigned long flags;
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int bus_speed = system_bus_clock();
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int port = hwif->channel ? 0x5c : 0x58;
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int portFIFO = hwif->channel ? 0x55 : 0x54;
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u8 cd_dma_fifo = 0;
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int unit = drive->select.b.unit & 1;
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pio = ide_get_best_pio_mode(drive, pio, 5, &d);
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s_time = ide_pio_timings[pio].setup_time;
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a_time = ide_pio_timings[pio].active_time;
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if ((s_clc = (s_time * bus_speed + 999) / 1000) >= 8)
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s_clc = 0;
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if ((a_clc = (a_time * bus_speed + 999) / 1000) >= 8)
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a_clc = 0;
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c_time = ide_pio_timings[pio].cycle_time;
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#if 0
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if ((r_clc = ((c_time - s_time - a_time) * bus_speed + 999) / 1000) >= 16)
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r_clc = 0;
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#endif
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if (!(r_clc = (c_time * bus_speed + 999) / 1000 - a_clc - s_clc)) {
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r_clc = 1;
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} else {
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if (r_clc >= 16)
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r_clc = 0;
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}
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local_irq_save(flags);
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/*
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* PIO mode => ATA FIFO on, ATAPI FIFO off
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*/
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pci_read_config_byte(dev, portFIFO, &cd_dma_fifo);
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if (drive->media==ide_disk) {
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if (unit) {
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pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0x0F) | 0x50);
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} else {
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pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0xF0) | 0x05);
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}
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} else {
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if (unit) {
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pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0x0F);
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} else {
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pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0xF0);
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}
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}
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pci_write_config_byte(dev, port, s_clc);
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pci_write_config_byte(dev, port+drive->select.b.unit+2, (a_clc << 4) | r_clc);
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local_irq_restore(flags);
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/*
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* setup active rec
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* { 70, 165, 365 }, PIO Mode 0
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* { 50, 125, 208 }, PIO Mode 1
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* { 30, 100, 110 }, PIO Mode 2
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* { 30, 80, 70 }, PIO Mode 3 with IORDY
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* { 25, 70, 25 }, PIO Mode 4 with IORDY ns
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* { 20, 50, 30 } PIO Mode 5 with IORDY (nonstandard)
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*/
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}
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/**
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* ali15x3_can_ultra - check for ultra DMA support
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* @drive: drive to do the check
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*
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* Check the drive and controller revisions. Return 0 if UDMA is
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* not available, or 1 if UDMA can be used. The actual rules for
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* the ALi are
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* No UDMA on revisions <= 0x20
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* Disk only for revisions < 0xC2
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* Not WDC drives for revisions < 0xC2
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*
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* FIXME: WDC ifdef needs to die
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*/
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static u8 ali15x3_can_ultra (ide_drive_t *drive)
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{
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#ifndef CONFIG_WDC_ALI15X3
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struct hd_driveid *id = drive->id;
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#endif /* CONFIG_WDC_ALI15X3 */
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if (m5229_revision <= 0x20) {
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return 0;
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} else if ((m5229_revision < 0xC2) &&
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#ifndef CONFIG_WDC_ALI15X3
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((chip_is_1543c_e && strstr(id->model, "WDC ")) ||
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(drive->media!=ide_disk))) {
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#else /* CONFIG_WDC_ALI15X3 */
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(drive->media!=ide_disk)) {
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#endif /* CONFIG_WDC_ALI15X3 */
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return 0;
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} else {
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return 1;
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}
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}
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/**
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* ali15x3_ratemask - generate DMA mode list
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* @drive: drive to compute against
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*
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* Generate a list of the available DMA modes for the drive.
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* FIXME: this function contains lots of bogus masking we can dump
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*
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* Return the highest available mode (UDMA33, UDMA66, UDMA100,..)
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*/
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static u8 ali15x3_ratemask (ide_drive_t *drive)
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{
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u8 mode = 0, can_ultra = ali15x3_can_ultra(drive);
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if (m5229_revision > 0xC4 && can_ultra) {
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mode = 4;
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} else if (m5229_revision == 0xC4 && can_ultra) {
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mode = 3;
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} else if (m5229_revision >= 0xC2 && can_ultra) {
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mode = 2;
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} else if (can_ultra) {
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return 1;
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} else {
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return 0;
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}
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/*
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* If the drive sees no suitable cable then UDMA 33
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* is the highest permitted mode
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*/
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if (!eighty_ninty_three(drive))
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mode = min(mode, (u8)1);
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return mode;
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}
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/**
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* ali15x3_tune_chipset - set up chiset for new speed
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* @drive: drive to configure for
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* @xferspeed: desired speed
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*
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* Configure the hardware for the desired IDE transfer mode.
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* We also do the needed drive configuration through helpers
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*/
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static int ali15x3_tune_chipset (ide_drive_t *drive, u8 xferspeed)
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{
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ide_hwif_t *hwif = HWIF(drive);
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struct pci_dev *dev = hwif->pci_dev;
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u8 speed = ide_rate_filter(ali15x3_ratemask(drive), xferspeed);
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|
u8 speed1 = speed;
|
|
u8 unit = (drive->select.b.unit & 0x01);
|
|
u8 tmpbyte = 0x00;
|
|
int m5229_udma = (hwif->channel) ? 0x57 : 0x56;
|
|
|
|
if (speed == XFER_UDMA_6)
|
|
speed1 = 0x47;
|
|
|
|
if (speed < XFER_UDMA_0) {
|
|
u8 ultra_enable = (unit) ? 0x7f : 0xf7;
|
|
/*
|
|
* clear "ultra enable" bit
|
|
*/
|
|
pci_read_config_byte(dev, m5229_udma, &tmpbyte);
|
|
tmpbyte &= ultra_enable;
|
|
pci_write_config_byte(dev, m5229_udma, tmpbyte);
|
|
|
|
if (speed < XFER_SW_DMA_0)
|
|
ali15x3_tune_drive(drive, speed);
|
|
} else {
|
|
pci_read_config_byte(dev, m5229_udma, &tmpbyte);
|
|
tmpbyte &= (0x0f << ((1-unit) << 2));
|
|
/*
|
|
* enable ultra dma and set timing
|
|
*/
|
|
tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
|
|
pci_write_config_byte(dev, m5229_udma, tmpbyte);
|
|
if (speed >= XFER_UDMA_3) {
|
|
pci_read_config_byte(dev, 0x4b, &tmpbyte);
|
|
tmpbyte |= 1;
|
|
pci_write_config_byte(dev, 0x4b, tmpbyte);
|
|
}
|
|
}
|
|
return (ide_config_drive_speed(drive, speed));
|
|
}
|
|
|
|
|
|
/**
|
|
* config_chipset_for_dma - set up DMA mode
|
|
* @drive: drive to configure for
|
|
*
|
|
* Place a drive into DMA mode and tune the chipset for
|
|
* the selected speed.
|
|
*
|
|
* Returns true if DMA mode can be used
|
|
*/
|
|
|
|
static int config_chipset_for_dma (ide_drive_t *drive)
|
|
{
|
|
u8 speed = ide_dma_speed(drive, ali15x3_ratemask(drive));
|
|
|
|
if (!(speed))
|
|
return 0;
|
|
|
|
(void) ali15x3_tune_chipset(drive, speed);
|
|
return ide_dma_enable(drive);
|
|
}
|
|
|
|
/**
|
|
* ali15x3_config_drive_for_dma - configure for DMA
|
|
* @drive: drive to configure
|
|
*
|
|
* Configure a drive for DMA operation. If DMA is not possible we
|
|
* drop the drive into PIO mode instead.
|
|
*
|
|
* FIXME: exactly what are we trying to return here
|
|
*/
|
|
|
|
static int ali15x3_config_drive_for_dma(ide_drive_t *drive)
|
|
{
|
|
ide_hwif_t *hwif = HWIF(drive);
|
|
struct hd_driveid *id = drive->id;
|
|
|
|
if ((m5229_revision<=0x20) && (drive->media!=ide_disk))
|
|
return hwif->ide_dma_off_quietly(drive);
|
|
|
|
drive->init_speed = 0;
|
|
|
|
if ((id != NULL) && ((id->capability & 1) != 0) && drive->autodma) {
|
|
/* Consult the list of known "bad" drives */
|
|
if (__ide_dma_bad_drive(drive))
|
|
goto ata_pio;
|
|
if ((id->field_valid & 4) && (m5229_revision >= 0xC2)) {
|
|
if (id->dma_ultra & hwif->ultra_mask) {
|
|
/* Force if Capable UltraDMA */
|
|
int dma = config_chipset_for_dma(drive);
|
|
if ((id->field_valid & 2) && !dma)
|
|
goto try_dma_modes;
|
|
}
|
|
} else if (id->field_valid & 2) {
|
|
try_dma_modes:
|
|
if ((id->dma_mword & hwif->mwdma_mask) ||
|
|
(id->dma_1word & hwif->swdma_mask)) {
|
|
/* Force if Capable regular DMA modes */
|
|
if (!config_chipset_for_dma(drive))
|
|
goto no_dma_set;
|
|
}
|
|
} else if (__ide_dma_good_drive(drive) &&
|
|
(id->eide_dma_time < 150)) {
|
|
/* Consult the list of known "good" drives */
|
|
if (!config_chipset_for_dma(drive))
|
|
goto no_dma_set;
|
|
} else {
|
|
goto ata_pio;
|
|
}
|
|
} else {
|
|
ata_pio:
|
|
hwif->tuneproc(drive, 255);
|
|
no_dma_set:
|
|
return hwif->ide_dma_off_quietly(drive);
|
|
}
|
|
return hwif->ide_dma_on(drive);
|
|
}
|
|
|
|
/**
|
|
* ali15x3_dma_setup - begin a DMA phase
|
|
* @drive: target device
|
|
*
|
|
* Returns 1 if the DMA cannot be performed, zero on success.
|
|
*/
|
|
|
|
static int ali15x3_dma_setup(ide_drive_t *drive)
|
|
{
|
|
if (m5229_revision < 0xC2 && drive->media != ide_disk) {
|
|
if (rq_data_dir(drive->hwif->hwgroup->rq))
|
|
return 1; /* try PIO instead of DMA */
|
|
}
|
|
return ide_dma_setup(drive);
|
|
}
|
|
|
|
/**
|
|
* init_chipset_ali15x3 - Initialise an ALi IDE controller
|
|
* @dev: PCI device
|
|
* @name: Name of the controller
|
|
*
|
|
* This function initializes the ALI IDE controller and where
|
|
* appropriate also sets up the 1533 southbridge.
|
|
*/
|
|
|
|
static unsigned int __init init_chipset_ali15x3 (struct pci_dev *dev, const char *name)
|
|
{
|
|
unsigned long flags;
|
|
u8 tmpbyte;
|
|
struct pci_dev *north = pci_find_slot(0, PCI_DEVFN(0,0));
|
|
|
|
pci_read_config_byte(dev, PCI_REVISION_ID, &m5229_revision);
|
|
|
|
isa_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
|
|
|
|
#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS)
|
|
if (!ali_proc) {
|
|
ali_proc = 1;
|
|
bmide_dev = dev;
|
|
ide_pci_create_host_proc("ali", ali_get_info);
|
|
}
|
|
#endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) */
|
|
|
|
local_irq_save(flags);
|
|
|
|
if (m5229_revision < 0xC2) {
|
|
/*
|
|
* revision 0x20 (1543-E, 1543-F)
|
|
* revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
|
|
* clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
|
|
*/
|
|
pci_read_config_byte(dev, 0x4b, &tmpbyte);
|
|
/*
|
|
* clear bit 7
|
|
*/
|
|
pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
|
|
local_irq_restore(flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* 1543C-B?, 1535, 1535D, 1553
|
|
* Note 1: not all "motherboard" support this detection
|
|
* Note 2: if no udma 66 device, the detection may "error".
|
|
* but in this case, we will not set the device to
|
|
* ultra 66, the detection result is not important
|
|
*/
|
|
|
|
/*
|
|
* enable "Cable Detection", m5229, 0x4b, bit3
|
|
*/
|
|
pci_read_config_byte(dev, 0x4b, &tmpbyte);
|
|
pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
|
|
|
|
/*
|
|
* We should only tune the 1533 enable if we are using an ALi
|
|
* North bridge. We might have no north found on some zany
|
|
* box without a device at 0:0.0. The ALi bridge will be at
|
|
* 0:0.0 so if we didn't find one we know what is cooking.
|
|
*/
|
|
if (north && north->vendor != PCI_VENDOR_ID_AL) {
|
|
local_irq_restore(flags);
|
|
return 0;
|
|
}
|
|
|
|
if (m5229_revision < 0xC5 && isa_dev)
|
|
{
|
|
/*
|
|
* set south-bridge's enable bit, m1533, 0x79
|
|
*/
|
|
|
|
pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
|
|
if (m5229_revision == 0xC2) {
|
|
/*
|
|
* 1543C-B0 (m1533, 0x79, bit 2)
|
|
*/
|
|
pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
|
|
} else if (m5229_revision >= 0xC3) {
|
|
/*
|
|
* 1553/1535 (m1533, 0x79, bit 1)
|
|
*/
|
|
pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
|
|
}
|
|
}
|
|
local_irq_restore(flags);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ata66_ali15x3 - check for UDMA 66 support
|
|
* @hwif: IDE interface
|
|
*
|
|
* This checks if the controller and the cable are capable
|
|
* of UDMA66 transfers. It doesn't check the drives.
|
|
* But see note 2 below!
|
|
*
|
|
* FIXME: frobs bits that are not defined on newer ALi devicea
|
|
*/
|
|
|
|
static unsigned int __init ata66_ali15x3 (ide_hwif_t *hwif)
|
|
{
|
|
struct pci_dev *dev = hwif->pci_dev;
|
|
unsigned int ata66 = 0;
|
|
u8 cable_80_pin[2] = { 0, 0 };
|
|
|
|
unsigned long flags;
|
|
u8 tmpbyte;
|
|
|
|
local_irq_save(flags);
|
|
|
|
if (m5229_revision >= 0xC2) {
|
|
/*
|
|
* Ultra66 cable detection (from Host View)
|
|
* m5229, 0x4a, bit0: primary, bit1: secondary 80 pin
|
|
*/
|
|
pci_read_config_byte(dev, 0x4a, &tmpbyte);
|
|
/*
|
|
* 0x4a, bit0 is 0 => primary channel
|
|
* has 80-pin (from host view)
|
|
*/
|
|
if (!(tmpbyte & 0x01)) cable_80_pin[0] = 1;
|
|
/*
|
|
* 0x4a, bit1 is 0 => secondary channel
|
|
* has 80-pin (from host view)
|
|
*/
|
|
if (!(tmpbyte & 0x02)) cable_80_pin[1] = 1;
|
|
/*
|
|
* Allow ata66 if cable of current channel has 80 pins
|
|
*/
|
|
ata66 = (hwif->channel)?cable_80_pin[1]:cable_80_pin[0];
|
|
} else {
|
|
/*
|
|
* check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
|
|
*/
|
|
pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
|
|
chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
|
|
}
|
|
|
|
/*
|
|
* CD_ROM DMA on (m5229, 0x53, bit0)
|
|
* Enable this bit even if we want to use PIO
|
|
* PIO FIFO off (m5229, 0x53, bit1)
|
|
* The hardware will use 0x54h and 0x55h to control PIO FIFO
|
|
* (Not on later devices it seems)
|
|
*
|
|
* 0x53 changes meaning on later revs - we must no touch
|
|
* bit 1 on them. Need to check if 0x20 is the right break
|
|
*/
|
|
|
|
pci_read_config_byte(dev, 0x53, &tmpbyte);
|
|
|
|
if(m5229_revision <= 0x20)
|
|
tmpbyte = (tmpbyte & (~0x02)) | 0x01;
|
|
else
|
|
tmpbyte |= 0x01;
|
|
|
|
pci_write_config_byte(dev, 0x53, tmpbyte);
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return(ata66);
|
|
}
|
|
|
|
/**
|
|
* init_hwif_common_ali15x3 - Set up ALI IDE hardware
|
|
* @hwif: IDE interface
|
|
*
|
|
* Initialize the IDE structure side of the ALi 15x3 driver.
|
|
*/
|
|
|
|
static void __init init_hwif_common_ali15x3 (ide_hwif_t *hwif)
|
|
{
|
|
hwif->autodma = 0;
|
|
hwif->tuneproc = &ali15x3_tune_drive;
|
|
hwif->speedproc = &ali15x3_tune_chipset;
|
|
|
|
/* don't use LBA48 DMA on ALi devices before rev 0xC5 */
|
|
hwif->no_lba48_dma = (m5229_revision <= 0xC4) ? 1 : 0;
|
|
|
|
if (!hwif->dma_base) {
|
|
hwif->drives[0].autotune = 1;
|
|
hwif->drives[1].autotune = 1;
|
|
return;
|
|
}
|
|
|
|
hwif->atapi_dma = 1;
|
|
|
|
if (m5229_revision > 0x20)
|
|
hwif->ultra_mask = 0x7f;
|
|
hwif->mwdma_mask = 0x07;
|
|
hwif->swdma_mask = 0x07;
|
|
|
|
if (m5229_revision >= 0x20) {
|
|
/*
|
|
* M1543C or newer for DMAing
|
|
*/
|
|
hwif->ide_dma_check = &ali15x3_config_drive_for_dma;
|
|
hwif->dma_setup = &ali15x3_dma_setup;
|
|
if (!noautodma)
|
|
hwif->autodma = 1;
|
|
if (!(hwif->udma_four))
|
|
hwif->udma_four = ata66_ali15x3(hwif);
|
|
}
|
|
hwif->drives[0].autodma = hwif->autodma;
|
|
hwif->drives[1].autodma = hwif->autodma;
|
|
}
|
|
|
|
/**
|
|
* init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
|
|
* @hwif: interface to configure
|
|
*
|
|
* Obtain the IRQ tables for an ALi based IDE solution on the PC
|
|
* class platforms. This part of the code isn't applicable to the
|
|
* Sparc systems
|
|
*/
|
|
|
|
static void __init init_hwif_ali15x3 (ide_hwif_t *hwif)
|
|
{
|
|
u8 ideic, inmir;
|
|
s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
|
|
1, 11, 0, 12, 0, 14, 0, 15 };
|
|
int irq = -1;
|
|
|
|
if (hwif->pci_dev->device == PCI_DEVICE_ID_AL_M5229)
|
|
hwif->irq = hwif->channel ? 15 : 14;
|
|
|
|
if (isa_dev) {
|
|
/*
|
|
* read IDE interface control
|
|
*/
|
|
pci_read_config_byte(isa_dev, 0x58, &ideic);
|
|
|
|
/* bit0, bit1 */
|
|
ideic = ideic & 0x03;
|
|
|
|
/* get IRQ for IDE Controller */
|
|
if ((hwif->channel && ideic == 0x03) ||
|
|
(!hwif->channel && !ideic)) {
|
|
/*
|
|
* get SIRQ1 routing table
|
|
*/
|
|
pci_read_config_byte(isa_dev, 0x44, &inmir);
|
|
inmir = inmir & 0x0f;
|
|
irq = irq_routing_table[inmir];
|
|
} else if (hwif->channel && !(ideic & 0x01)) {
|
|
/*
|
|
* get SIRQ2 routing table
|
|
*/
|
|
pci_read_config_byte(isa_dev, 0x75, &inmir);
|
|
inmir = inmir & 0x0f;
|
|
irq = irq_routing_table[inmir];
|
|
}
|
|
if(irq >= 0)
|
|
hwif->irq = irq;
|
|
}
|
|
|
|
init_hwif_common_ali15x3(hwif);
|
|
}
|
|
|
|
/**
|
|
* init_dma_ali15x3 - set up DMA on ALi15x3
|
|
* @hwif: IDE interface
|
|
* @dmabase: DMA interface base PCI address
|
|
*
|
|
* Set up the DMA functionality on the ALi 15x3. For the ALi
|
|
* controllers this is generic so we can let the generic code do
|
|
* the actual work.
|
|
*/
|
|
|
|
static void __init init_dma_ali15x3 (ide_hwif_t *hwif, unsigned long dmabase)
|
|
{
|
|
if (m5229_revision < 0x20)
|
|
return;
|
|
if (!(hwif->channel))
|
|
hwif->OUTB(hwif->INB(dmabase+2) & 0x60, dmabase+2);
|
|
ide_setup_dma(hwif, dmabase, 8);
|
|
}
|
|
|
|
static ide_pci_device_t ali15x3_chipset __devinitdata = {
|
|
.name = "ALI15X3",
|
|
.init_chipset = init_chipset_ali15x3,
|
|
.init_hwif = init_hwif_ali15x3,
|
|
.init_dma = init_dma_ali15x3,
|
|
.channels = 2,
|
|
.autodma = AUTODMA,
|
|
.bootable = ON_BOARD,
|
|
};
|
|
|
|
/**
|
|
* alim15x3_init_one - set up an ALi15x3 IDE controller
|
|
* @dev: PCI device to set up
|
|
*
|
|
* Perform the actual set up for an ALi15x3 that has been found by the
|
|
* hot plug layer.
|
|
*/
|
|
|
|
static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
|
|
{
|
|
ide_pci_device_t *d = &ali15x3_chipset;
|
|
|
|
if(pci_find_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, NULL))
|
|
printk(KERN_ERR "Warning: ATI Radeon IGP Northbridge is not yet fully tested.\n");
|
|
|
|
#if defined(CONFIG_SPARC64)
|
|
d->init_hwif = init_hwif_common_ali15x3;
|
|
#endif /* CONFIG_SPARC64 */
|
|
return ide_setup_pci_device(dev, d);
|
|
}
|
|
|
|
|
|
static struct pci_device_id alim15x3_pci_tbl[] = {
|
|
{ PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5229, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
|
|
{ PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5228, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
|
|
{ 0, },
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
|
|
|
|
static struct pci_driver driver = {
|
|
.name = "ALI15x3_IDE",
|
|
.id_table = alim15x3_pci_tbl,
|
|
.probe = alim15x3_init_one,
|
|
};
|
|
|
|
static int ali15x3_ide_init(void)
|
|
{
|
|
return ide_pci_register_driver(&driver);
|
|
}
|
|
|
|
module_init(ali15x3_ide_init);
|
|
|
|
MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox");
|
|
MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
|
|
MODULE_LICENSE("GPL");
|