forked from Minki/linux
a1efdaba2d
Currently reset methods are not specified directly in the ata_port_operations table. If a LLD wants to use custom reset methods, it should construct and use a error_handler which uses those reset methods. It's done this way for two reasons. First, the ops table already contained too many methods and adding four more of them would noticeably increase the amount of necessary boilerplate code all over low level drivers. Second, as ->error_handler uses those reset methods, it can get confusing. ie. By overriding ->error_handler, those reset ops can be made useless making layering a bit hazy. Now that ops table uses inheritance, the first problem doesn't exist anymore. The second isn't completely solved but is relieved by providing default values - most drivers can just override what it has implemented and don't have to concern itself about higher level callbacks. In fact, there currently is no driver which actually modifies error handling behavior. Drivers which override ->error_handler just wraps the standard error handler only to prepare the controller for EH. I don't think making ops layering strict has any noticeable benefit. This patch makes ->prereset, ->softreset, ->hardreset, ->postreset and their PMP counterparts propoer ops. Default ops are provided in the base ops tables and drivers are converted to override individual reset methods instead of creating custom error_handler. * ata_std_error_handler() doesn't use sata_std_hardreset() if SCRs aren't accessible. sata_promise doesn't need to use separate error_handlers for PATA and SATA anymore. * softreset is broken for sata_inic162x and sata_sx4. As libata now always prefers hardreset, this doesn't really matter but the ops are forced to NULL using ATA_OP_NULL for documentation purpose. * pata_hpt374 needs to use different prereset for the first and second PCI functions. This used to be done by branching from hpt374_error_handler(). The proper way to do this is to use separate ops and port_info tables for each function. Converted. Signed-off-by: Tejun Heo <htejun@gmail.com>
865 lines
22 KiB
C
865 lines
22 KiB
C
/*
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* pata_sis.c - SiS ATA driver
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*
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* (C) 2005 Red Hat <alan@redhat.com>
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* (C) 2007 Bartlomiej Zolnierkiewicz
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*
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* Based upon linux/drivers/ide/pci/sis5513.c
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* Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org>
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* Copyright (C) 2002 Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
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* Copyright (C) 2003 Vojtech Pavlik <vojtech@suse.cz>
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* SiS Taiwan : for direct support and hardware.
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* Daniela Engert : for initial ATA100 advices and numerous others.
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* John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt :
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* for checking code correctness, providing patches.
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* Original tests and design on the SiS620 chipset.
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* ATA100 tests and design on the SiS735 chipset.
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* ATA16/33 support from specs
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* ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
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*
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*
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* TODO
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* Check MWDMA on drives that don't support MWDMA speed pio cycles ?
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* More Testing
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/blkdev.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <scsi/scsi_host.h>
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#include <linux/libata.h>
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#include <linux/ata.h>
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#include "sis.h"
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#define DRV_NAME "pata_sis"
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#define DRV_VERSION "0.5.2"
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struct sis_chipset {
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u16 device; /* PCI host ID */
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const struct ata_port_info *info; /* Info block */
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/* Probably add family, cable detect type etc here to clean
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up code later */
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};
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struct sis_laptop {
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u16 device;
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u16 subvendor;
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u16 subdevice;
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};
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static const struct sis_laptop sis_laptop[] = {
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/* devid, subvendor, subdev */
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{ 0x5513, 0x1043, 0x1107 }, /* ASUS A6K */
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{ 0x5513, 0x1734, 0x105F }, /* FSC Amilo A1630 */
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{ 0x5513, 0x1071, 0x8640 }, /* EasyNote K5305 */
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/* end marker */
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{ 0, }
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};
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static int sis_short_ata40(struct pci_dev *dev)
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{
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const struct sis_laptop *lap = &sis_laptop[0];
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while (lap->device) {
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if (lap->device == dev->device &&
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lap->subvendor == dev->subsystem_vendor &&
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lap->subdevice == dev->subsystem_device)
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return 1;
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lap++;
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}
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return 0;
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}
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/**
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* sis_old_port_base - return PCI configuration base for dev
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* @adev: device
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*
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* Returns the base of the PCI configuration registers for this port
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* number.
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*/
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static int sis_old_port_base(struct ata_device *adev)
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{
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return 0x40 + (4 * adev->link->ap->port_no) + (2 * adev->devno);
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}
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/**
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* sis_133_cable_detect - check for 40/80 pin
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* @ap: Port
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* @deadline: deadline jiffies for the operation
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*
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* Perform cable detection for the later UDMA133 capable
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* SiS chipset.
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*/
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static int sis_133_cable_detect(struct ata_port *ap)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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u16 tmp;
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/* The top bit of this register is the cable detect bit */
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pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp);
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if ((tmp & 0x8000) && !sis_short_ata40(pdev))
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return ATA_CBL_PATA40;
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return ATA_CBL_PATA80;
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}
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/**
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* sis_66_cable_detect - check for 40/80 pin
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* @ap: Port
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* @deadline: deadline jiffies for the operation
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*
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* Perform cable detection on the UDMA66, UDMA100 and early UDMA133
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* SiS IDE controllers.
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*/
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static int sis_66_cable_detect(struct ata_port *ap)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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u8 tmp;
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/* Older chips keep cable detect in bits 4/5 of reg 0x48 */
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pci_read_config_byte(pdev, 0x48, &tmp);
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tmp >>= ap->port_no;
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if ((tmp & 0x10) && !sis_short_ata40(pdev))
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return ATA_CBL_PATA40;
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return ATA_CBL_PATA80;
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}
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/**
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* sis_pre_reset - probe begin
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* @link: ATA link
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* @deadline: deadline jiffies for the operation
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*
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* Set up cable type and use generic probe init
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*/
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static int sis_pre_reset(struct ata_link *link, unsigned long deadline)
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{
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static const struct pci_bits sis_enable_bits[] = {
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{ 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */
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{ 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */
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};
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struct ata_port *ap = link->ap;
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
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return -ENOENT;
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/* Clear the FIFO settings. We can't enable the FIFO until
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we know we are poking at a disk */
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pci_write_config_byte(pdev, 0x4B, 0);
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return ata_std_prereset(link, deadline);
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}
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/**
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* sis_set_fifo - Set RWP fifo bits for this device
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* @ap: Port
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* @adev: Device
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*
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* SIS chipsets implement prefetch/postwrite bits for each device
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* on both channels. This functionality is not ATAPI compatible and
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* must be configured according to the class of device present
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*/
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static void sis_set_fifo(struct ata_port *ap, struct ata_device *adev)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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u8 fifoctrl;
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u8 mask = 0x11;
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mask <<= (2 * ap->port_no);
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mask <<= adev->devno;
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/* This holds various bits including the FIFO control */
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pci_read_config_byte(pdev, 0x4B, &fifoctrl);
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fifoctrl &= ~mask;
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/* Enable for ATA (disk) only */
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if (adev->class == ATA_DEV_ATA)
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fifoctrl |= mask;
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pci_write_config_byte(pdev, 0x4B, fifoctrl);
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}
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/**
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* sis_old_set_piomode - Initialize host controller PATA PIO timings
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* @ap: Port whose timings we are configuring
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* @adev: Device we are configuring for.
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*
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* Set PIO mode for device, in host controller PCI config space. This
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* function handles PIO set up for all chips that are pre ATA100 and
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* also early ATA100 devices.
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*
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* LOCKING:
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* None (inherited from caller).
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*/
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static void sis_old_set_piomode (struct ata_port *ap, struct ata_device *adev)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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int port = sis_old_port_base(adev);
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u8 t1, t2;
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int speed = adev->pio_mode - XFER_PIO_0;
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const u8 active[] = { 0x00, 0x07, 0x04, 0x03, 0x01 };
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const u8 recovery[] = { 0x00, 0x06, 0x04, 0x03, 0x03 };
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sis_set_fifo(ap, adev);
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pci_read_config_byte(pdev, port, &t1);
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pci_read_config_byte(pdev, port + 1, &t2);
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t1 &= ~0x0F; /* Clear active/recovery timings */
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t2 &= ~0x07;
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t1 |= active[speed];
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t2 |= recovery[speed];
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pci_write_config_byte(pdev, port, t1);
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pci_write_config_byte(pdev, port + 1, t2);
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}
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/**
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* sis_100_set_piomode - Initialize host controller PATA PIO timings
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* @ap: Port whose timings we are configuring
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* @adev: Device we are configuring for.
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*
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* Set PIO mode for device, in host controller PCI config space. This
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* function handles PIO set up for ATA100 devices and early ATA133.
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*
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* LOCKING:
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* None (inherited from caller).
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*/
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static void sis_100_set_piomode (struct ata_port *ap, struct ata_device *adev)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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int port = sis_old_port_base(adev);
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int speed = adev->pio_mode - XFER_PIO_0;
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const u8 actrec[] = { 0x00, 0x67, 0x44, 0x33, 0x31 };
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sis_set_fifo(ap, adev);
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pci_write_config_byte(pdev, port, actrec[speed]);
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}
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/**
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* sis_133_set_piomode - Initialize host controller PATA PIO timings
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* @ap: Port whose timings we are configuring
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* @adev: Device we are configuring for.
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*
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* Set PIO mode for device, in host controller PCI config space. This
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* function handles PIO set up for the later ATA133 devices.
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*
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* LOCKING:
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* None (inherited from caller).
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*/
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static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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int port = 0x40;
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u32 t1;
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u32 reg54;
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int speed = adev->pio_mode - XFER_PIO_0;
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const u32 timing133[] = {
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0x28269000, /* Recovery << 24 | Act << 16 | Ini << 12 */
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0x0C266000,
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0x04263000,
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0x0C0A3000,
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0x05093000
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};
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const u32 timing100[] = {
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0x1E1C6000, /* Recovery << 24 | Act << 16 | Ini << 12 */
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0x091C4000,
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0x031C2000,
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0x09072000,
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0x04062000
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};
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sis_set_fifo(ap, adev);
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/* If bit 14 is set then the registers are mapped at 0x70 not 0x40 */
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pci_read_config_dword(pdev, 0x54, ®54);
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if (reg54 & 0x40000000)
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port = 0x70;
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port += 8 * ap->port_no + 4 * adev->devno;
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pci_read_config_dword(pdev, port, &t1);
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t1 &= 0xC0C00FFF; /* Mask out timing */
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if (t1 & 0x08) /* 100 or 133 ? */
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t1 |= timing133[speed];
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else
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t1 |= timing100[speed];
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pci_write_config_byte(pdev, port, t1);
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}
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/**
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* sis_old_set_dmamode - Initialize host controller PATA DMA timings
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* @ap: Port whose timings we are configuring
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* @adev: Device to program
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*
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* Set UDMA/MWDMA mode for device, in host controller PCI config space.
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* Handles pre UDMA and UDMA33 devices. Supports MWDMA as well unlike
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* the old ide/pci driver.
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*
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* LOCKING:
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* None (inherited from caller).
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*/
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static void sis_old_set_dmamode (struct ata_port *ap, struct ata_device *adev)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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int speed = adev->dma_mode - XFER_MW_DMA_0;
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int drive_pci = sis_old_port_base(adev);
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u16 timing;
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const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
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const u16 udma_bits[] = { 0xE000, 0xC000, 0xA000 };
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pci_read_config_word(pdev, drive_pci, &timing);
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if (adev->dma_mode < XFER_UDMA_0) {
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/* bits 3-0 hold recovery timing bits 8-10 active timing and
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the higher bits are dependant on the device */
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timing &= ~0x870F;
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timing |= mwdma_bits[speed];
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} else {
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/* Bit 15 is UDMA on/off, bit 13-14 are cycle time */
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speed = adev->dma_mode - XFER_UDMA_0;
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timing &= ~0x6000;
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timing |= udma_bits[speed];
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}
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pci_write_config_word(pdev, drive_pci, timing);
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}
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/**
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* sis_66_set_dmamode - Initialize host controller PATA DMA timings
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* @ap: Port whose timings we are configuring
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* @adev: Device to program
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*
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* Set UDMA/MWDMA mode for device, in host controller PCI config space.
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* Handles UDMA66 and early UDMA100 devices. Supports MWDMA as well unlike
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* the old ide/pci driver.
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*
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* LOCKING:
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* None (inherited from caller).
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*/
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static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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int speed = adev->dma_mode - XFER_MW_DMA_0;
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int drive_pci = sis_old_port_base(adev);
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u16 timing;
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/* MWDMA 0-2 and UDMA 0-5 */
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const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
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const u16 udma_bits[] = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000, 0x8000 };
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pci_read_config_word(pdev, drive_pci, &timing);
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if (adev->dma_mode < XFER_UDMA_0) {
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/* bits 3-0 hold recovery timing bits 8-10 active timing and
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the higher bits are dependant on the device, bit 15 udma */
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timing &= ~0x870F;
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timing |= mwdma_bits[speed];
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} else {
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/* Bit 15 is UDMA on/off, bit 12-14 are cycle time */
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speed = adev->dma_mode - XFER_UDMA_0;
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timing &= ~0xF000;
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timing |= udma_bits[speed];
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}
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pci_write_config_word(pdev, drive_pci, timing);
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}
|
|
|
|
/**
|
|
* sis_100_set_dmamode - Initialize host controller PATA DMA timings
|
|
* @ap: Port whose timings we are configuring
|
|
* @adev: Device to program
|
|
*
|
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* Set UDMA/MWDMA mode for device, in host controller PCI config space.
|
|
* Handles UDMA66 and early UDMA100 devices.
|
|
*
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* LOCKING:
|
|
* None (inherited from caller).
|
|
*/
|
|
|
|
static void sis_100_set_dmamode (struct ata_port *ap, struct ata_device *adev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
int speed = adev->dma_mode - XFER_MW_DMA_0;
|
|
int drive_pci = sis_old_port_base(adev);
|
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u8 timing;
|
|
|
|
const u8 udma_bits[] = { 0x8B, 0x87, 0x85, 0x83, 0x82, 0x81};
|
|
|
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pci_read_config_byte(pdev, drive_pci + 1, &timing);
|
|
|
|
if (adev->dma_mode < XFER_UDMA_0) {
|
|
/* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
|
|
} else {
|
|
/* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
|
|
speed = adev->dma_mode - XFER_UDMA_0;
|
|
timing &= ~0x8F;
|
|
timing |= udma_bits[speed];
|
|
}
|
|
pci_write_config_byte(pdev, drive_pci + 1, timing);
|
|
}
|
|
|
|
/**
|
|
* sis_133_early_set_dmamode - Initialize host controller PATA DMA timings
|
|
* @ap: Port whose timings we are configuring
|
|
* @adev: Device to program
|
|
*
|
|
* Set UDMA/MWDMA mode for device, in host controller PCI config space.
|
|
* Handles early SiS 961 bridges.
|
|
*
|
|
* LOCKING:
|
|
* None (inherited from caller).
|
|
*/
|
|
|
|
static void sis_133_early_set_dmamode (struct ata_port *ap, struct ata_device *adev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
int speed = adev->dma_mode - XFER_MW_DMA_0;
|
|
int drive_pci = sis_old_port_base(adev);
|
|
u8 timing;
|
|
/* Low 4 bits are timing */
|
|
static const u8 udma_bits[] = { 0x8F, 0x8A, 0x87, 0x85, 0x83, 0x82, 0x81};
|
|
|
|
pci_read_config_byte(pdev, drive_pci + 1, &timing);
|
|
|
|
if (adev->dma_mode < XFER_UDMA_0) {
|
|
/* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
|
|
} else {
|
|
/* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
|
|
speed = adev->dma_mode - XFER_UDMA_0;
|
|
timing &= ~0x8F;
|
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timing |= udma_bits[speed];
|
|
}
|
|
pci_write_config_byte(pdev, drive_pci + 1, timing);
|
|
}
|
|
|
|
/**
|
|
* sis_133_set_dmamode - Initialize host controller PATA DMA timings
|
|
* @ap: Port whose timings we are configuring
|
|
* @adev: Device to program
|
|
*
|
|
* Set UDMA/MWDMA mode for device, in host controller PCI config space.
|
|
*
|
|
* LOCKING:
|
|
* None (inherited from caller).
|
|
*/
|
|
|
|
static void sis_133_set_dmamode (struct ata_port *ap, struct ata_device *adev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
int speed = adev->dma_mode - XFER_MW_DMA_0;
|
|
int port = 0x40;
|
|
u32 t1;
|
|
u32 reg54;
|
|
|
|
/* bits 4- cycle time 8 - cvs time */
|
|
static const u32 timing_u100[] = { 0x6B0, 0x470, 0x350, 0x140, 0x120, 0x110, 0x000 };
|
|
static const u32 timing_u133[] = { 0x9F0, 0x6A0, 0x470, 0x250, 0x230, 0x220, 0x210 };
|
|
|
|
/* If bit 14 is set then the registers are mapped at 0x70 not 0x40 */
|
|
pci_read_config_dword(pdev, 0x54, ®54);
|
|
if (reg54 & 0x40000000)
|
|
port = 0x70;
|
|
port += (8 * ap->port_no) + (4 * adev->devno);
|
|
|
|
pci_read_config_dword(pdev, port, &t1);
|
|
|
|
if (adev->dma_mode < XFER_UDMA_0) {
|
|
t1 &= ~0x00000004;
|
|
/* FIXME: need data sheet to add MWDMA here. Also lacking on
|
|
ide/pci driver */
|
|
} else {
|
|
speed = adev->dma_mode - XFER_UDMA_0;
|
|
/* if & 8 no UDMA133 - need info for ... */
|
|
t1 &= ~0x00000FF0;
|
|
t1 |= 0x00000004;
|
|
if (t1 & 0x08)
|
|
t1 |= timing_u133[speed];
|
|
else
|
|
t1 |= timing_u100[speed];
|
|
}
|
|
pci_write_config_dword(pdev, port, t1);
|
|
}
|
|
|
|
static struct scsi_host_template sis_sht = {
|
|
ATA_BMDMA_SHT(DRV_NAME),
|
|
};
|
|
|
|
static struct ata_port_operations sis_133_for_sata_ops = {
|
|
.inherits = &ata_bmdma_port_ops,
|
|
.set_piomode = sis_133_set_piomode,
|
|
.set_dmamode = sis_133_set_dmamode,
|
|
.cable_detect = sis_133_cable_detect,
|
|
};
|
|
|
|
static struct ata_port_operations sis_base_ops = {
|
|
.inherits = &ata_bmdma_port_ops,
|
|
.prereset = sis_pre_reset,
|
|
};
|
|
|
|
static struct ata_port_operations sis_133_ops = {
|
|
.inherits = &sis_base_ops,
|
|
.set_piomode = sis_133_set_piomode,
|
|
.set_dmamode = sis_133_set_dmamode,
|
|
.cable_detect = sis_133_cable_detect,
|
|
};
|
|
|
|
static struct ata_port_operations sis_133_early_ops = {
|
|
.inherits = &sis_base_ops,
|
|
.set_piomode = sis_100_set_piomode,
|
|
.set_dmamode = sis_133_early_set_dmamode,
|
|
.cable_detect = sis_66_cable_detect,
|
|
};
|
|
|
|
static struct ata_port_operations sis_100_ops = {
|
|
.inherits = &sis_base_ops,
|
|
.set_piomode = sis_100_set_piomode,
|
|
.set_dmamode = sis_100_set_dmamode,
|
|
.cable_detect = sis_66_cable_detect,
|
|
};
|
|
|
|
static struct ata_port_operations sis_66_ops = {
|
|
.inherits = &sis_base_ops,
|
|
.set_piomode = sis_old_set_piomode,
|
|
.set_dmamode = sis_66_set_dmamode,
|
|
.cable_detect = sis_66_cable_detect,
|
|
};
|
|
|
|
static struct ata_port_operations sis_old_ops = {
|
|
.inherits = &sis_base_ops,
|
|
.set_piomode = sis_old_set_piomode,
|
|
.set_dmamode = sis_old_set_dmamode,
|
|
.cable_detect = ata_cable_40wire,
|
|
};
|
|
|
|
static const struct ata_port_info sis_info = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.mwdma_mask = 0x07,
|
|
.udma_mask = 0,
|
|
.port_ops = &sis_old_ops,
|
|
};
|
|
static const struct ata_port_info sis_info33 = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.mwdma_mask = 0x07,
|
|
.udma_mask = ATA_UDMA2, /* UDMA 33 */
|
|
.port_ops = &sis_old_ops,
|
|
};
|
|
static const struct ata_port_info sis_info66 = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.udma_mask = ATA_UDMA4, /* UDMA 66 */
|
|
.port_ops = &sis_66_ops,
|
|
};
|
|
static const struct ata_port_info sis_info100 = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.udma_mask = ATA_UDMA5,
|
|
.port_ops = &sis_100_ops,
|
|
};
|
|
static const struct ata_port_info sis_info100_early = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.udma_mask = ATA_UDMA5,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.port_ops = &sis_66_ops,
|
|
};
|
|
static const struct ata_port_info sis_info133 = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &sis_133_ops,
|
|
};
|
|
const struct ata_port_info sis_info133_for_sata = {
|
|
.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &sis_133_for_sata_ops,
|
|
};
|
|
static const struct ata_port_info sis_info133_early = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = 0x1f, /* pio0-4 */
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &sis_133_early_ops,
|
|
};
|
|
|
|
/* Privately shared with the SiS180 SATA driver, not for use elsewhere */
|
|
EXPORT_SYMBOL_GPL(sis_info133_for_sata);
|
|
|
|
static void sis_fixup(struct pci_dev *pdev, struct sis_chipset *sis)
|
|
{
|
|
u16 regw;
|
|
u8 reg;
|
|
|
|
if (sis->info == &sis_info133) {
|
|
pci_read_config_word(pdev, 0x50, ®w);
|
|
if (regw & 0x08)
|
|
pci_write_config_word(pdev, 0x50, regw & ~0x08);
|
|
pci_read_config_word(pdev, 0x52, ®w);
|
|
if (regw & 0x08)
|
|
pci_write_config_word(pdev, 0x52, regw & ~0x08);
|
|
return;
|
|
}
|
|
|
|
if (sis->info == &sis_info133_early || sis->info == &sis_info100) {
|
|
/* Fix up latency */
|
|
pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
|
|
/* Set compatibility bit */
|
|
pci_read_config_byte(pdev, 0x49, ®);
|
|
if (!(reg & 0x01))
|
|
pci_write_config_byte(pdev, 0x49, reg | 0x01);
|
|
return;
|
|
}
|
|
|
|
if (sis->info == &sis_info66 || sis->info == &sis_info100_early) {
|
|
/* Fix up latency */
|
|
pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
|
|
/* Set compatibility bit */
|
|
pci_read_config_byte(pdev, 0x52, ®);
|
|
if (!(reg & 0x04))
|
|
pci_write_config_byte(pdev, 0x52, reg | 0x04);
|
|
return;
|
|
}
|
|
|
|
if (sis->info == &sis_info33) {
|
|
pci_read_config_byte(pdev, PCI_CLASS_PROG, ®);
|
|
if (( reg & 0x0F ) != 0x00)
|
|
pci_write_config_byte(pdev, PCI_CLASS_PROG, reg & 0xF0);
|
|
/* Fall through to ATA16 fixup below */
|
|
}
|
|
|
|
if (sis->info == &sis_info || sis->info == &sis_info33) {
|
|
/* force per drive recovery and active timings
|
|
needed on ATA_33 and below chips */
|
|
pci_read_config_byte(pdev, 0x52, ®);
|
|
if (!(reg & 0x08))
|
|
pci_write_config_byte(pdev, 0x52, reg|0x08);
|
|
return;
|
|
}
|
|
|
|
BUG();
|
|
}
|
|
|
|
/**
|
|
* sis_init_one - Register SiS ATA PCI device with kernel services
|
|
* @pdev: PCI device to register
|
|
* @ent: Entry in sis_pci_tbl matching with @pdev
|
|
*
|
|
* Called from kernel PCI layer. We probe for combined mode (sigh),
|
|
* and then hand over control to libata, for it to do the rest.
|
|
*
|
|
* LOCKING:
|
|
* Inherited from PCI layer (may sleep).
|
|
*
|
|
* RETURNS:
|
|
* Zero on success, or -ERRNO value.
|
|
*/
|
|
|
|
static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
static int printed_version;
|
|
const struct ata_port_info *ppi[] = { NULL, NULL };
|
|
struct pci_dev *host = NULL;
|
|
struct sis_chipset *chipset = NULL;
|
|
struct sis_chipset *sets;
|
|
int rc;
|
|
|
|
static struct sis_chipset sis_chipsets[] = {
|
|
|
|
{ 0x0968, &sis_info133 },
|
|
{ 0x0966, &sis_info133 },
|
|
{ 0x0965, &sis_info133 },
|
|
{ 0x0745, &sis_info100 },
|
|
{ 0x0735, &sis_info100 },
|
|
{ 0x0733, &sis_info100 },
|
|
{ 0x0635, &sis_info100 },
|
|
{ 0x0633, &sis_info100 },
|
|
|
|
{ 0x0730, &sis_info100_early }, /* 100 with ATA 66 layout */
|
|
{ 0x0550, &sis_info100_early }, /* 100 with ATA 66 layout */
|
|
|
|
{ 0x0640, &sis_info66 },
|
|
{ 0x0630, &sis_info66 },
|
|
{ 0x0620, &sis_info66 },
|
|
{ 0x0540, &sis_info66 },
|
|
{ 0x0530, &sis_info66 },
|
|
|
|
{ 0x5600, &sis_info33 },
|
|
{ 0x5598, &sis_info33 },
|
|
{ 0x5597, &sis_info33 },
|
|
{ 0x5591, &sis_info33 },
|
|
{ 0x5582, &sis_info33 },
|
|
{ 0x5581, &sis_info33 },
|
|
|
|
{ 0x5596, &sis_info },
|
|
{ 0x5571, &sis_info },
|
|
{ 0x5517, &sis_info },
|
|
{ 0x5511, &sis_info },
|
|
|
|
{0}
|
|
};
|
|
static struct sis_chipset sis133_early = {
|
|
0x0, &sis_info133_early
|
|
};
|
|
static struct sis_chipset sis133 = {
|
|
0x0, &sis_info133
|
|
};
|
|
static struct sis_chipset sis100_early = {
|
|
0x0, &sis_info100_early
|
|
};
|
|
static struct sis_chipset sis100 = {
|
|
0x0, &sis_info100
|
|
};
|
|
|
|
if (!printed_version++)
|
|
dev_printk(KERN_DEBUG, &pdev->dev,
|
|
"version " DRV_VERSION "\n");
|
|
|
|
rc = pcim_enable_device(pdev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* We have to find the bridge first */
|
|
for (sets = &sis_chipsets[0]; sets->device; sets++) {
|
|
host = pci_get_device(PCI_VENDOR_ID_SI, sets->device, NULL);
|
|
if (host != NULL) {
|
|
chipset = sets; /* Match found */
|
|
if (sets->device == 0x630) { /* SIS630 */
|
|
if (host->revision >= 0x30) /* 630 ET */
|
|
chipset = &sis100_early;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Look for concealed bridges */
|
|
if (chipset == NULL) {
|
|
/* Second check */
|
|
u32 idemisc;
|
|
u16 trueid;
|
|
|
|
/* Disable ID masking and register remapping then
|
|
see what the real ID is */
|
|
|
|
pci_read_config_dword(pdev, 0x54, &idemisc);
|
|
pci_write_config_dword(pdev, 0x54, idemisc & 0x7fffffff);
|
|
pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
|
|
pci_write_config_dword(pdev, 0x54, idemisc);
|
|
|
|
switch(trueid) {
|
|
case 0x5518: /* SIS 962/963 */
|
|
chipset = &sis133;
|
|
if ((idemisc & 0x40000000) == 0) {
|
|
pci_write_config_dword(pdev, 0x54, idemisc | 0x40000000);
|
|
printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
|
|
}
|
|
break;
|
|
case 0x0180: /* SIS 965/965L */
|
|
chipset = &sis133;
|
|
break;
|
|
case 0x1180: /* SIS 966/966L */
|
|
chipset = &sis133;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Further check */
|
|
if (chipset == NULL) {
|
|
struct pci_dev *lpc_bridge;
|
|
u16 trueid;
|
|
u8 prefctl;
|
|
u8 idecfg;
|
|
|
|
/* Try the second unmasking technique */
|
|
pci_read_config_byte(pdev, 0x4a, &idecfg);
|
|
pci_write_config_byte(pdev, 0x4a, idecfg | 0x10);
|
|
pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
|
|
pci_write_config_byte(pdev, 0x4a, idecfg);
|
|
|
|
switch(trueid) {
|
|
case 0x5517:
|
|
lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */
|
|
if (lpc_bridge == NULL)
|
|
break;
|
|
pci_read_config_byte(pdev, 0x49, &prefctl);
|
|
pci_dev_put(lpc_bridge);
|
|
|
|
if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
|
|
chipset = &sis133_early;
|
|
break;
|
|
}
|
|
chipset = &sis100;
|
|
break;
|
|
}
|
|
}
|
|
pci_dev_put(host);
|
|
|
|
/* No chipset info, no support */
|
|
if (chipset == NULL)
|
|
return -ENODEV;
|
|
|
|
ppi[0] = chipset->info;
|
|
|
|
sis_fixup(pdev, chipset);
|
|
|
|
return ata_pci_init_one(pdev, ppi, &sis_sht, chipset);
|
|
}
|
|
|
|
static const struct pci_device_id sis_pci_tbl[] = {
|
|
{ PCI_VDEVICE(SI, 0x5513), }, /* SiS 5513 */
|
|
{ PCI_VDEVICE(SI, 0x5518), }, /* SiS 5518 */
|
|
{ PCI_VDEVICE(SI, 0x1180), }, /* SiS 1180 */
|
|
|
|
{ }
|
|
};
|
|
|
|
static struct pci_driver sis_pci_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = sis_pci_tbl,
|
|
.probe = sis_init_one,
|
|
.remove = ata_pci_remove_one,
|
|
#ifdef CONFIG_PM
|
|
.suspend = ata_pci_device_suspend,
|
|
.resume = ata_pci_device_resume,
|
|
#endif
|
|
};
|
|
|
|
static int __init sis_init(void)
|
|
{
|
|
return pci_register_driver(&sis_pci_driver);
|
|
}
|
|
|
|
static void __exit sis_exit(void)
|
|
{
|
|
pci_unregister_driver(&sis_pci_driver);
|
|
}
|
|
|
|
module_init(sis_init);
|
|
module_exit(sis_exit);
|
|
|
|
MODULE_AUTHOR("Alan Cox");
|
|
MODULE_DESCRIPTION("SCSI low-level driver for SiS ATA");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
|
|
MODULE_VERSION(DRV_VERSION);
|
|
|