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/*
* Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2002 Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
* Copyright (C) 2003 Vojtech Pavlik <vojtech@suse.cz>
* Copyright (C) 2007-2009 Bartlomiej Zolnierkiewicz
*
* May be copied or modified under the terms of the GNU General Public License
*
*
* Thanks :
*
* SiS Taiwan : for direct support and hardware.
* Daniela Engert : for initial ATA100 advices and numerous others.
* John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt :
* for checking code correctness, providing patches.
*
*
* Original tests and design on the SiS620 chipset.
* ATA100 tests and design on the SiS735 chipset.
* ATA16/33 support from specs
* ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
* ATA133 961/962/963 fixes by Vojtech Pavlik <vojtech@suse.cz>
*
* Documentation:
* SiS chipset documentation available under NDA to companies only
* (not to individuals).
*/
/*
* The original SiS5513 comes from a SiS5511/55112/5513 chipset. The original
* SiS5513 was also used in the SiS5596/5513 chipset. Thus if we see a SiS5511
* or SiS5596, we can assume we see the first MWDMA-16 capable SiS5513 chip.
*
* Later SiS chipsets integrated the 5513 functionality into the NorthBridge,
* starting with SiS5571 and up to SiS745. The PCI ID didn't change, though. We
* can figure out that we have a more modern and more capable 5513 by looking
* for the respective NorthBridge IDs.
*
* Even later (96x family) SiS chipsets use the MuTIOL link and place the 5513
* into the SouthBrige. Here we cannot rely on looking up the NorthBridge PCI
* ID, while the now ATA-133 capable 5513 still has the same PCI ID.
* Fortunately the 5513 can be 'unmasked' by fiddling with some config space
* bits, changing its device id to the true one - 5517 for 961 and 5518 for
* 962/963.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/ide.h>
#define DRV_NAME "sis5513"
/* registers layout and init values are chipset family dependent */
#define ATA_16 0x01
#define ATA_33 0x02
#define ATA_66 0x03
#define ATA_100a 0x04 /* SiS730/SiS550 is ATA100 with ATA66 layout */
#define ATA_100 0x05
#define ATA_133a 0x06 /* SiS961b with 133 support */
#define ATA_133 0x07 /* SiS962/963 */
static u8 chipset_family;
/*
* Devices supported
*/
static const struct {
const char *name;
u16 host_id;
u8 chipset_family;
u8 flags;
} SiSHostChipInfo[] = {
{ "SiS968", PCI_DEVICE_ID_SI_968, ATA_133 },
{ "SiS966", PCI_DEVICE_ID_SI_966, ATA_133 },
{ "SiS965", PCI_DEVICE_ID_SI_965, ATA_133 },
{ "SiS745", PCI_DEVICE_ID_SI_745, ATA_100 },
{ "SiS735", PCI_DEVICE_ID_SI_735, ATA_100 },
{ "SiS733", PCI_DEVICE_ID_SI_733, ATA_100 },
{ "SiS635", PCI_DEVICE_ID_SI_635, ATA_100 },
{ "SiS633", PCI_DEVICE_ID_SI_633, ATA_100 },
{ "SiS730", PCI_DEVICE_ID_SI_730, ATA_100a },
{ "SiS550", PCI_DEVICE_ID_SI_550, ATA_100a },
{ "SiS640", PCI_DEVICE_ID_SI_640, ATA_66 },
{ "SiS630", PCI_DEVICE_ID_SI_630, ATA_66 },
{ "SiS620", PCI_DEVICE_ID_SI_620, ATA_66 },
{ "SiS540", PCI_DEVICE_ID_SI_540, ATA_66 },
{ "SiS530", PCI_DEVICE_ID_SI_530, ATA_66 },
{ "SiS5600", PCI_DEVICE_ID_SI_5600, ATA_33 },
{ "SiS5598", PCI_DEVICE_ID_SI_5598, ATA_33 },
{ "SiS5597", PCI_DEVICE_ID_SI_5597, ATA_33 },
{ "SiS5591/2", PCI_DEVICE_ID_SI_5591, ATA_33 },
{ "SiS5582", PCI_DEVICE_ID_SI_5582, ATA_33 },
{ "SiS5581", PCI_DEVICE_ID_SI_5581, ATA_33 },
{ "SiS5596", PCI_DEVICE_ID_SI_5596, ATA_16 },
{ "SiS5571", PCI_DEVICE_ID_SI_5571, ATA_16 },
{ "SiS5517", PCI_DEVICE_ID_SI_5517, ATA_16 },
{ "SiS551x", PCI_DEVICE_ID_SI_5511, ATA_16 },
};
/* Cycle time bits and values vary across chip dma capabilities
These three arrays hold the register layout and the values to set.
Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */
/* {0, ATA_16, ATA_33, ATA_66, ATA_100a, ATA_100, ATA_133} */
static u8 cycle_time_offset[] = { 0, 0, 5, 4, 4, 0, 0 };
static u8 cycle_time_range[] = { 0, 0, 2, 3, 3, 4, 4 };
static u8 cycle_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
{ 0, 0, 0, 0, 0, 0, 0 }, /* no UDMA */
{ 0, 0, 0, 0, 0, 0, 0 }, /* no UDMA */
{ 3, 2, 1, 0, 0, 0, 0 }, /* ATA_33 */
{ 7, 5, 3, 2, 1, 0, 0 }, /* ATA_66 */
{ 7, 5, 3, 2, 1, 0, 0 }, /* ATA_100a (730 specific),
different cycle_time range and offset */
{ 11, 7, 5, 4, 2, 1, 0 }, /* ATA_100 */
{ 15, 10, 7, 5, 3, 2, 1 }, /* ATA_133a (earliest 691 southbridges) */
{ 15, 10, 7, 5, 3, 2, 1 }, /* ATA_133 */
};
/* CRC Valid Setup Time vary across IDE clock setting 33/66/100/133
See SiS962 data sheet for more detail */
static u8 cvs_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
{ 0, 0, 0, 0, 0, 0, 0 }, /* no UDMA */
{ 0, 0, 0, 0, 0, 0, 0 }, /* no UDMA */
{ 2, 1, 1, 0, 0, 0, 0 },
{ 4, 3, 2, 1, 0, 0, 0 },
{ 4, 3, 2, 1, 0, 0, 0 },
{ 6, 4, 3, 1, 1, 1, 0 },
{ 9, 6, 4, 2, 2, 2, 2 },
{ 9, 6, 4, 2, 2, 2, 2 },
};
/* Initialize time, Active time, Recovery time vary across
IDE clock settings. These 3 arrays hold the register value
for PIO0/1/2/3/4 and DMA0/1/2 mode in order */
static u8 ini_time_value[][8] = {
{ 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0 },
{ 2, 1, 0, 0, 0, 1, 0, 0 },
{ 4, 3, 1, 1, 1, 3, 1, 1 },
{ 4, 3, 1, 1, 1, 3, 1, 1 },
{ 6, 4, 2, 2, 2, 4, 2, 2 },
{ 9, 6, 3, 3, 3, 6, 3, 3 },
{ 9, 6, 3, 3, 3, 6, 3, 3 },
};
static u8 act_time_value[][8] = {
{ 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0 },
{ 9, 9, 9, 2, 2, 7
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