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![Sergey Shtylyov](/assets/img/avatar_default.png)
The packed transfer mode masks and also the {pio|mwdma|udma}_mask fields of *struct*s ata_device and ata_port_info are declared as *unsigned long* (which is a 64-bit type on 64-bit architectures) but actually the packed masks occupy only 20 bits (7 PIO modes, 5 MWDMA modes, and 8 UDMA modes) and the PIO/MWDMA/UDMA masks easily fit into just 8 bits each, so we can safely use (always 32-bit) *unsigned int* variables instead. This saves 745 bytes of object code in libata-core.o alone, not to mention LLDDs... Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru> Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
915 lines
24 KiB
C
915 lines
24 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* pata_sis.c - SiS ATA driver
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*
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* (C) 2005 Red Hat
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* (C) 2007,2009 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/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_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_port_base(struct ata_device *adev)
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{
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struct ata_port *ap = adev->link->ap;
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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 reg54;
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/* If bit 30 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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return port + (8 * ap->port_no) + (4 * 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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*
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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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*
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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_sff_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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static const u8 active[] = { 0x00, 0x07, 0x04, 0x03, 0x01 };
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static 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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static 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;
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u32 t1;
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int speed = adev->pio_mode - XFER_PIO_0;
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static 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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static 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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port = sis_port_base(adev);
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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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static const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
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static 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 dependent 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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static const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
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static 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 dependent 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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}
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/**
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* sis_100_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.
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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_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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u8 timing;
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static const u8 udma_bits[] = { 0x8B, 0x87, 0x85, 0x83, 0x82, 0x81};
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pci_read_config_byte(pdev, drive_pci + 1, &timing);
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if (adev->dma_mode < XFER_UDMA_0) {
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/* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
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} else {
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/* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
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speed = adev->dma_mode - XFER_UDMA_0;
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timing &= ~0x8F;
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timing |= udma_bits[speed];
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}
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pci_write_config_byte(pdev, drive_pci + 1, timing);
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}
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/**
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* sis_133_early_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 early SiS 961 bridges.
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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_early_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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u8 timing;
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/* Low 4 bits are timing */
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static const u8 udma_bits[] = { 0x8F, 0x8A, 0x87, 0x85, 0x83, 0x82, 0x81};
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pci_read_config_byte(pdev, drive_pci + 1, &timing);
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if (adev->dma_mode < XFER_UDMA_0) {
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/* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
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} else {
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/* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
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speed = adev->dma_mode - XFER_UDMA_0;
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timing &= ~0x8F;
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timing |= udma_bits[speed];
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}
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pci_write_config_byte(pdev, drive_pci + 1, timing);
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}
|
|
|
|
/**
|
|
* 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 port;
|
|
u32 t1;
|
|
|
|
port = sis_port_base(adev);
|
|
pci_read_config_dword(pdev, port, &t1);
|
|
|
|
if (adev->dma_mode < XFER_UDMA_0) {
|
|
/* Recovery << 24 | Act << 16 | Ini << 12, like PIO modes */
|
|
static const u32 timing_u100[] = { 0x19154000, 0x06072000, 0x04062000 };
|
|
static const u32 timing_u133[] = { 0x221C6000, 0x0C0A3000, 0x05093000 };
|
|
int speed = adev->dma_mode - XFER_MW_DMA_0;
|
|
|
|
t1 &= 0xC0C00FFF;
|
|
/* disable UDMA */
|
|
t1 &= ~0x00000004;
|
|
if (t1 & 0x08)
|
|
t1 |= timing_u133[speed];
|
|
else
|
|
t1 |= timing_u100[speed];
|
|
} else {
|
|
/* 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 };
|
|
int speed = adev->dma_mode - XFER_UDMA_0;
|
|
|
|
t1 &= ~0x00000FF0;
|
|
/* enable UDMA */
|
|
t1 |= 0x00000004;
|
|
if (t1 & 0x08)
|
|
t1 |= timing_u133[speed];
|
|
else
|
|
t1 |= timing_u100[speed];
|
|
}
|
|
pci_write_config_dword(pdev, port, t1);
|
|
}
|
|
|
|
/**
|
|
* sis_133_mode_filter - mode selection filter
|
|
* @adev: ATA device
|
|
* @mask: received mask to manipulate and pass back
|
|
*
|
|
* Block UDMA6 on devices that do not support it.
|
|
*/
|
|
|
|
static unsigned int sis_133_mode_filter(struct ata_device *adev, unsigned int mask)
|
|
{
|
|
struct ata_port *ap = adev->link->ap;
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
int port = sis_port_base(adev);
|
|
u32 t1;
|
|
|
|
pci_read_config_dword(pdev, port, &t1);
|
|
/* if ATA133 is disabled, mask it out */
|
|
if (!(t1 & 0x08))
|
|
mask &= ~(0xC0 << ATA_SHIFT_UDMA);
|
|
return mask;
|
|
}
|
|
|
|
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,
|
|
.mode_filter = sis_133_mode_filter,
|
|
};
|
|
|
|
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 = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
/* No UDMA */
|
|
.port_ops = &sis_old_ops,
|
|
};
|
|
static const struct ata_port_info sis_info33 = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA2,
|
|
.port_ops = &sis_old_ops,
|
|
};
|
|
static const struct ata_port_info sis_info66 = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
/* No MWDMA */
|
|
.udma_mask = ATA_UDMA4,
|
|
.port_ops = &sis_66_ops,
|
|
};
|
|
static const struct ata_port_info sis_info100 = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
/* No MWDMA */
|
|
.udma_mask = ATA_UDMA5,
|
|
.port_ops = &sis_100_ops,
|
|
};
|
|
static const struct ata_port_info sis_info100_early = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
/* No MWDMA */
|
|
.udma_mask = ATA_UDMA5,
|
|
.port_ops = &sis_66_ops,
|
|
};
|
|
static const struct ata_port_info sis_info133 = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &sis_133_ops,
|
|
};
|
|
const struct ata_port_info sis_info133_for_sata = {
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
.pio_mask = ATA_PIO4,
|
|
/* No MWDMA */
|
|
.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 = ATA_PIO4,
|
|
/* No MWDMA */
|
|
.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)
|
|
{
|
|
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
|
|
};
|
|
|
|
ata_print_version_once(&pdev->dev, DRV_VERSION);
|
|
|
|
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 */
|
|
dev_info(&pdev->dev,
|
|
"SiS 962/963 MuTIOL IDE UDMA133 controller\n");
|
|
chipset = &sis133;
|
|
if ((idemisc & 0x40000000) == 0) {
|
|
pci_write_config_dword(pdev, 0x54, idemisc | 0x40000000);
|
|
dev_info(&pdev->dev,
|
|
"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_bmdma_init_one(pdev, ppi, &sis_sht, chipset, 0);
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int sis_reinit_one(struct pci_dev *pdev)
|
|
{
|
|
struct ata_host *host = pci_get_drvdata(pdev);
|
|
int rc;
|
|
|
|
rc = ata_pci_device_do_resume(pdev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
sis_fixup(pdev, host->private_data);
|
|
|
|
ata_host_resume(host);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
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_SLEEP
|
|
.suspend = ata_pci_device_suspend,
|
|
.resume = sis_reinit_one,
|
|
#endif
|
|
};
|
|
|
|
module_pci_driver(sis_pci_driver);
|
|
|
|
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);
|