linux/drivers/ata/ata_piix.c

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/*
* ata_piix.c - Intel PATA/SATA controllers
*
* Maintained by: Jeff Garzik <jgarzik@pobox.com>
* Please ALWAYS copy linux-ide@vger.kernel.org
* on emails.
*
*
* Copyright 2003-2005 Red Hat Inc
* Copyright 2003-2005 Jeff Garzik
*
*
* Copyright header from piix.c:
*
* Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
* Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2003 Red Hat Inc
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* libata documentation is available via 'make {ps|pdf}docs',
* as Documentation/DocBook/libata.*
*
* Hardware documentation available at http://developer.intel.com/
*
* Documentation
* Publicly available from Intel web site. Errata documentation
* is also publicly available. As an aide to anyone hacking on this
* driver the list of errata that are relevant is below, going back to
* PIIX4. Older device documentation is now a bit tricky to find.
*
* The chipsets all follow very much the same design. The original Triton
* series chipsets do _not_ support independent device timings, but this
* is fixed in Triton II. With the odd mobile exception the chips then
* change little except in gaining more modes until SATA arrives. This
* driver supports only the chips with independent timing (that is those
* with SITRE and the 0x44 timing register). See pata_oldpiix and pata_mpiix
* for the early chip drivers.
*
* Errata of note:
*
* Unfixable
* PIIX4 errata #9 - Only on ultra obscure hw
* ICH3 errata #13 - Not observed to affect real hw
* by Intel
*
* Things we must deal with
* PIIX4 errata #10 - BM IDE hang with non UDMA
* (must stop/start dma to recover)
* 440MX errata #15 - As PIIX4 errata #10
* PIIX4 errata #15 - Must not read control registers
* during a PIO transfer
* 440MX errata #13 - As PIIX4 errata #15
* ICH2 errata #21 - DMA mode 0 doesn't work right
* ICH0/1 errata #55 - As ICH2 errata #21
* ICH2 spec c #9 - Extra operations needed to handle
* drive hotswap [NOT YET SUPPORTED]
* ICH2 spec c #20 - IDE PRD must not cross a 64K boundary
* and must be dword aligned
* ICH2 spec c #24 - UDMA mode 4,5 t85/86 should be 6ns not 3.3
* ICH7 errata #16 - MWDMA1 timings are incorrect
*
* Should have been BIOS fixed:
* 450NX: errata #19 - DMA hangs on old 450NX
* 450NX: errata #20 - DMA hangs on old 450NX
* 450NX: errata #25 - Corruption with DMA on old 450NX
* ICH3 errata #15 - IDE deadlock under high load
* (BIOS must set dev 31 fn 0 bit 23)
* ICH3 errata #18 - Don't use native mode
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/device.h>
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
#include <linux/gfp.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <linux/dmi.h>
#define DRV_NAME "ata_piix"
#define DRV_VERSION "2.13"
enum {
PIIX_IOCFG = 0x54, /* IDE I/O configuration register */
ICH5_PMR = 0x90, /* port mapping register */
ICH5_PCS = 0x92, /* port control and status */
PIIX_SIDPR_BAR = 5,
PIIX_SIDPR_LEN = 16,
PIIX_SIDPR_IDX = 0,
PIIX_SIDPR_DATA = 4,
[PATCH] ata_piix: fix MAP VALUE interpretation for for ICH6/7 Unlike their older siblings, ICH6 and 7 use different scheme for MAP VALUE. This patch makes ata_piix interpret MV properly on ICH6/7. Pre-ICH6/7 The value of these bits indicate the address range the SATA port responds to, and whether or not the SATA and IDE functions are combined. 000 = Non-combined. P0 is primary master. P1 is secondary master. 001 = Non-combined. P0 is secondary master. P1 is primary master. 100 = Combined. P0 is primary master. P1 is primary slave. P-ATA is 2:0 Map Value secondary. 101 = Combined. P0 is primary slave. P1 is primary master. P-ATA is secondary. 110 = Combined. P-ATA is primary. P0 is secondary master. P1 is secondary slave. 111 = Combined. P-ATA is primary. P0 is secondary slave. P1 is secondary master. ICH6/7 Map Value - R/W. Map Value (MV): The value in the bits below indicate the address range the SATA ports responds to, and whether or not the PATA and SATA functions are combined. When in combined mode, the AHCI memory space is not available and AHCI may not be used. 00 = Non-combined. P0 is primary master, P2 is the primary slave. P1 is secondary master, P3 is the 1:0 secondary slave (desktop only). P0 is primary master, P2 is the primary slave (mobile only). 01 = Combined. IDE is primary. P1 is secondary master, P3 is the secondary slave. (desktop only) 10 = Combined. P0 is primary master. P2 is primary slave. IDE is secondary 11 = Reserved Signed-off-by: Tejun Heo <htejun@gmail.com> -- Jeff, without this patch, ata_piix misdetects my ICH7's combined mode, ending up not applying bridge limits to PX-710SA and configuring IDE drive on 40-c cable to UDMA/66. Thanks. Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-18 16:17:07 +08:00
PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */
PIIX_FLAG_SIDPR = (1 << 29), /* SATA idx/data pair regs */
PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS,
PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR,
PIIX_FLAG_PIO16 = (1 << 30), /*support 16bit PIO only*/
PIIX_80C_PRI = (1 << 5) | (1 << 4),
PIIX_80C_SEC = (1 << 7) | (1 << 6),
/* constants for mapping table */
P0 = 0, /* port 0 */
P1 = 1, /* port 1 */
P2 = 2, /* port 2 */
P3 = 3, /* port 3 */
IDE = -1, /* IDE */
NA = -2, /* not available */
RV = -3, /* reserved */
PIIX_AHCI_DEVICE = 6,
/* host->flags bits */
PIIX_HOST_BROKEN_SUSPEND = (1 << 24),
};
enum piix_controller_ids {
/* controller IDs */
piix_pata_mwdma, /* PIIX3 MWDMA only */
piix_pata_33, /* PIIX4 at 33Mhz */
ich_pata_33, /* ICH up to UDMA 33 only */
ich_pata_66, /* ICH up to 66 Mhz */
ich_pata_100, /* ICH up to UDMA 100 */
ich_pata_100_nomwdma1, /* ICH up to UDMA 100 but with no MWDMA1*/
ich5_sata,
ich6_sata,
ich6m_sata,
ich8_sata,
ich8_2port_sata,
ich8m_apple_sata, /* locks up on second port enable */
tolapai_sata,
piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */
ich8_sata_snb,
ich8_2port_sata_snb,
};
struct piix_map_db {
const u32 mask;
const u16 port_enable;
const int map[][4];
};
struct piix_host_priv {
const int *map;
u32 saved_iocfg;
void __iomem *sidpr;
};
static unsigned int in_module_init = 1;
static const struct pci_device_id piix_pci_tbl[] = {
/* Intel PIIX3 for the 430HX etc */
{ 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma },
/* VMware ICH4 */
{ 0x8086, 0x7111, 0x15ad, 0x1976, 0, 0, piix_pata_vmw },
/* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */
/* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */
{ 0x8086, 0x7111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
/* Intel PIIX4 */
{ 0x8086, 0x7199, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
/* Intel PIIX4 */
{ 0x8086, 0x7601, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
/* Intel PIIX */
{ 0x8086, 0x84CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
/* Intel ICH (i810, i815, i840) UDMA 66*/
{ 0x8086, 0x2411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_66 },
/* Intel ICH0 : UDMA 33*/
{ 0x8086, 0x2421, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_33 },
/* Intel ICH2M */
{ 0x8086, 0x244A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */
{ 0x8086, 0x244B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* Intel ICH3M */
{ 0x8086, 0x248A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* Intel ICH3 (E7500/1) UDMA 100 */
{ 0x8086, 0x248B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* Intel ICH4-L */
{ 0x8086, 0x24C1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */
{ 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
{ 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* Intel ICH5 */
ata_piix: disallow UDMA 133 on ICH5 & ICH7 There is another outstanding issue with ata_piix.c. Intel has never officially supported anything faster than PATA 100MB/s. But, the ata_piix.c driver "define" the ICH5 & ICH7 as UDMA6 (aka 133MB/s) capable. [ Well, no one has probably noticed it before, because there is bug in do_pata_set_dmamode... Just look at libata_atapiix_enable_real_udma133.patch and you'll see what wrong with it. ] Here are Intel's datasheets for the affected chipsets: ICH5 Datasheet: http://www.intel.com/design/chipsets/datashts/252516.htm (See note on page 183: "... the ICH5 supports reads at the maximum rate of 100MB/s.") ICH7 Datasheet: http://www.intel.com/design/chipsets/datashts/307013.htm (See first note on page 190: "... the ICH7 supports reads at the maximum rate of 100MB/s.") They are two different ways to deal with it: - Either - 1. replace all ich_pata_133 with ich_pata_100. (libata_atapiix_disable_udma6.diff - diff from 2.6.22 ) - Or - 2. keep all ich_pata_133 and fix the bug in "do_pata_set_dmamode". (libata_atapiix_enable_real_udma133.patch - diff from 2.6.22) If there are any concerns about the safety of the patch patch: http://lkml.org/lkml/2007/7/6/292 (It was already tested by an Intel employee, but I guess a bit more user input is necessary here... ) This patch implements 1. Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jeff Garzik <jeff@garzik.org> Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Christian Lamparter <chunkeey@web.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-11 04:59:51 +08:00
{ 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* C-ICH (i810E2) */
{ 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* ESB (855GME/875P + 6300ESB) UDMA 100 */
{ 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* ICH6 (and 6) (i915) UDMA 100 */
{ 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* ICH7/7-R (i945, i975) UDMA 100*/
{ 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 },
{ 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 },
/* ICH8 Mobile PATA Controller */
{ 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
/* SATA ports */
/* 82801EB (ICH5) */
{ 0x8086, 0x24d1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
/* 82801EB (ICH5) */
{ 0x8086, 0x24df, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
/* 6300ESB (ICH5 variant with broken PCS present bits) */
{ 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
/* 6300ESB pretending RAID */
{ 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
/* 82801FB/FW (ICH6/ICH6W) */
{ 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
/* 82801FR/FRW (ICH6R/ICH6RW) */
{ 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
/* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented).
* Attach iff the controller is in IDE mode. */
{ 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID,
PCI_CLASS_STORAGE_IDE << 8, 0xffff00, ich6m_sata },
/* 82801GB/GR/GH (ICH7, identical to ICH6) */
{ 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
/* 2801GBM/GHM (ICH7M, identical to ICH6M) */
{ 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata },
/* Enterprise Southbridge 2 (631xESB/632xESB) */
{ 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
/* SATA Controller 1 IDE (ICH8) */
{ 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller 2 IDE (ICH8) */
{ 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* Mobile SATA Controller IDE (ICH8M), Apple */
{ 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata },
{ 0x8086, 0x2828, 0x106b, 0x00a1, 0, 0, ich8m_apple_sata },
{ 0x8086, 0x2828, 0x106b, 0x00a3, 0, 0, ich8m_apple_sata },
/* Mobile SATA Controller IDE (ICH8M) */
{ 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller IDE (ICH9) */
{ 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller IDE (ICH9) */
{ 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (ICH9) */
{ 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (ICH9M) */
{ 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (ICH9M) */
{ 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (ICH9M) */
{ 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller IDE (Tolapai) */
{ 0x8086, 0x5028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, tolapai_sata },
/* SATA Controller IDE (ICH10) */
{ 0x8086, 0x3a00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller IDE (ICH10) */
{ 0x8086, 0x3a06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (ICH10) */
{ 0x8086, 0x3a20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller IDE (ICH10) */
{ 0x8086, 0x3a26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b28, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b2d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller IDE (CPT) */
{ 0x8086, 0x1c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (CPT) */
{ 0x8086, 0x1c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (CPT) */
{ 0x8086, 0x1c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (CPT) */
{ 0x8086, 0x1c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (PBG) */
{ 0x8086, 0x1d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (PBG) */
{ 0x8086, 0x1d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (Panther Point) */
{ 0x8086, 0x1e00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (Panther Point) */
{ 0x8086, 0x1e01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (Panther Point) */
{ 0x8086, 0x1e08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (Panther Point) */
{ 0x8086, 0x1e09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (Lynx Point) */
{ 0x8086, 0x8c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (Lynx Point) */
{ 0x8086, 0x8c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (Lynx Point) */
{ 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
/* SATA Controller IDE (Lynx Point) */
{ 0x8086, 0x8c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (Lynx Point-LP) */
{ 0x8086, 0x9c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (Lynx Point-LP) */
{ 0x8086, 0x9c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (Lynx Point-LP) */
{ 0x8086, 0x9c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (Lynx Point-LP) */
{ 0x8086, 0x9c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (DH89xxCC) */
{ 0x8086, 0x2326, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (Avoton) */
{ 0x8086, 0x1f20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (Avoton) */
{ 0x8086, 0x1f21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (Avoton) */
{ 0x8086, 0x1f30, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (Avoton) */
{ 0x8086, 0x1f31, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (Wellsburg) */
{ 0x8086, 0x8d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (Wellsburg) */
{ 0x8086, 0x8d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (Wellsburg) */
{ 0x8086, 0x8d60, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
/* SATA Controller IDE (Wellsburg) */
{ 0x8086, 0x8d68, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
{ } /* terminate list */
};
static const struct piix_map_db ich5_map_db = {
.mask = 0x7,
.port_enable = 0x3,
.map = {
/* PM PS SM SS MAP */
{ P0, NA, P1, NA }, /* 000b */
{ P1, NA, P0, NA }, /* 001b */
{ RV, RV, RV, RV },
{ RV, RV, RV, RV },
{ P0, P1, IDE, IDE }, /* 100b */
{ P1, P0, IDE, IDE }, /* 101b */
{ IDE, IDE, P0, P1 }, /* 110b */
{ IDE, IDE, P1, P0 }, /* 111b */
},
};
static const struct piix_map_db ich6_map_db = {
.mask = 0x3,
.port_enable = 0xf,
.map = {
/* PM PS SM SS MAP */
{ P0, P2, P1, P3 }, /* 00b */
{ IDE, IDE, P1, P3 }, /* 01b */
{ P0, P2, IDE, IDE }, /* 10b */
{ RV, RV, RV, RV },
},
};
static const struct piix_map_db ich6m_map_db = {
.mask = 0x3,
.port_enable = 0x5,
/* Map 01b isn't specified in the doc but some notebooks use
* it anyway. MAP 01b have been spotted on both ICH6M and
* ICH7M.
*/
.map = {
/* PM PS SM SS MAP */
{ P0, P2, NA, NA }, /* 00b */
{ IDE, IDE, P1, P3 }, /* 01b */
{ P0, P2, IDE, IDE }, /* 10b */
{ RV, RV, RV, RV },
},
};
static const struct piix_map_db ich8_map_db = {
.mask = 0x3,
.port_enable = 0xf,
.map = {
/* PM PS SM SS MAP */
{ P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */
{ RV, RV, RV, RV },
{ P0, P2, IDE, IDE }, /* 10b (IDE mode) */
{ RV, RV, RV, RV },
},
};
static const struct piix_map_db ich8_2port_map_db = {
.mask = 0x3,
.port_enable = 0x3,
.map = {
/* PM PS SM SS MAP */
{ P0, NA, P1, NA }, /* 00b */
{ RV, RV, RV, RV }, /* 01b */
{ RV, RV, RV, RV }, /* 10b */
{ RV, RV, RV, RV },
},
};
static const struct piix_map_db ich8m_apple_map_db = {
.mask = 0x3,
.port_enable = 0x1,
.map = {
/* PM PS SM SS MAP */
{ P0, NA, NA, NA }, /* 00b */
{ RV, RV, RV, RV },
{ P0, P2, IDE, IDE }, /* 10b */
{ RV, RV, RV, RV },
},
};
static const struct piix_map_db tolapai_map_db = {
.mask = 0x3,
.port_enable = 0x3,
.map = {
/* PM PS SM SS MAP */
{ P0, NA, P1, NA }, /* 00b */
{ RV, RV, RV, RV }, /* 01b */
{ RV, RV, RV, RV }, /* 10b */
{ RV, RV, RV, RV },
},
};
static const struct piix_map_db *piix_map_db_table[] = {
[ich5_sata] = &ich5_map_db,
[ich6_sata] = &ich6_map_db,
[ich6m_sata] = &ich6m_map_db,
[ich8_sata] = &ich8_map_db,
[ich8_2port_sata] = &ich8_2port_map_db,
[ich8m_apple_sata] = &ich8m_apple_map_db,
[tolapai_sata] = &tolapai_map_db,
[ich8_sata_snb] = &ich8_map_db,
[ich8_2port_sata_snb] = &ich8_2port_map_db,
};
static struct pci_bits piix_enable_bits[] = {
{ 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
{ 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
};
MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik");
MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
MODULE_VERSION(DRV_VERSION);
struct ich_laptop {
u16 device;
u16 subvendor;
u16 subdevice;
};
/*
* List of laptops that use short cables rather than 80 wire
*/
static const struct ich_laptop ich_laptop[] = {
/* devid, subvendor, subdev */
{ 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */
{ 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */
{ 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
{ 0x27DF, 0x1028, 0x02b0 }, /* ICH7 on unknown Dell */
{ 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
{ 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
{ 0x27DF, 0x103C, 0x361a }, /* ICH7 on unknown HP */
{ 0x27DF, 0x1071, 0xD221 }, /* ICH7 on Hercules EC-900 */
{ 0x27DF, 0x152D, 0x0778 }, /* ICH7 on unknown Intel */
{ 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
{ 0x24CA, 0x1025, 0x003d }, /* ICH4 on ACER TM290 */
{ 0x266F, 0x1025, 0x0066 }, /* ICH6 on ACER Aspire 1694WLMi */
{ 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */
{ 0x27df, 0x104d, 0x900e }, /* ICH7 on Sony TZ-90 */
/* end marker */
{ 0, }
};
static int piix_port_start(struct ata_port *ap)
{
if (!(ap->flags & PIIX_FLAG_PIO16))
ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
return ata_bmdma_port_start(ap);
}
/**
* ich_pata_cable_detect - Probe host controller cable detect info
* @ap: Port for which cable detect info is desired
*
* Read 80c cable indicator from ATA PCI device's PCI config
* register. This register is normally set by firmware (BIOS).
*
* LOCKING:
* None (inherited from caller).
*/
static int ich_pata_cable_detect(struct ata_port *ap)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
struct piix_host_priv *hpriv = ap->host->private_data;
const struct ich_laptop *lap = &ich_laptop[0];
u8 mask;
/* Check for specials - Acer Aspire 5602WLMi */
while (lap->device) {
if (lap->device == pdev->device &&
lap->subvendor == pdev->subsystem_vendor &&
lap->subdevice == pdev->subsystem_device)
return ATA_CBL_PATA40_SHORT;
lap++;
}
/* check BIOS cable detect results */
mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC;
if ((hpriv->saved_iocfg & mask) == 0)
return ATA_CBL_PATA40;
return ATA_CBL_PATA80;
}
/**
* piix_pata_prereset - prereset for PATA host controller
* @link: Target link
libata: add deadline support to prereset and reset methods Add @deadline to prereset and reset methods and make them honor it. ata_wait_ready() which directly takes @deadline is implemented to be used as the wait function. This patch is in preparation for EH timing improvements. * ata_wait_ready() never does busy sleep. It's only used from EH and no wait in EH is that urgent. This function also prints 'be patient' message automatically after 5 secs of waiting if more than 3 secs is remaining till deadline. * ata_bus_post_reset() now fails with error code if any of its wait fails. This is important because earlier reset tries will have shorter timeout than the spec requires. If a device fails to respond before the short timeout, reset should be retried with longer timeout rather than silently ignoring the device. There are three behavior differences. 1. Timeout is applied to both devices at once, not separately. This is more consistent with what the spec says. 2. When a device passes devchk but fails to become ready before deadline. Previouly, post_reset would just succeed and let device classification remove the device. New code fails the reset thus causing reset retry. After a few times, EH will give up disabling the port. 3. When slave device passes devchk but fails to become accessible (TF-wise) after reset. Original code disables dev1 after 30s timeout and continues as if the device doesn't exist, while the patched code fails reset. When this happens, new code fails reset on whole port rather than proceeding with only the primary device. If the failing device is suffering transient problems, new code retries reset which is a better behavior. If the failing device is actually broken, the net effect is identical to it, but not to the other device sharing the channel. In the previous code, reset would have succeeded after 30s thus detecting the working one. In the new code, reset fails and whole port gets disabled. IMO, it's a pathological case anyway (broken device sharing bus with working one) and doesn't really matter. * ata_bus_softreset() is changed to return error code from ata_bus_post_reset(). It used to return 0 unconditionally. * Spin up waiting is to be removed and not converted to honor deadline. * To be on the safe side, deadline is set to 40s for the time being. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-02 15:50:52 +08:00
* @deadline: deadline jiffies for the operation
*
* LOCKING:
* None (inherited from caller).
*/
static int piix_pata_prereset(struct ata_link *link, unsigned long deadline)
{
struct ata_port *ap = link->ap;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
return -ENOENT;
return ata_sff_prereset(link, deadline);
}
ata_piix: parallel scanning on PATA needs an extra locking Commit log for commit 517d3cc15b36392e518abab6bacbb72089658313 ("[libata] ata_piix: Enable parallel scan") says: This patch turns on parallel scanning for the ata_piix driver. This driver is used on most netbooks (no AHCI for cheap storage it seems). The scan is the dominating time factor in the kernel boot for these devices; with this flag it gets cut in half for the device I used for testing (eeepc). Alan took a look at the driver source and concluded that it ought to be safe to do for this driver. Alan has also checked with the hardware team. and it is all true but once we put all things together additional constraints for PATA controllers show up (some hardware registers have per-host not per-port atomicity) and we risk misprogramming the controller. I used the following test to check whether the issue is real: @@ -736,8 +736,20 @@ static void piix_set_piomode(struct ata_ (timings[pio][1] << 8); } pci_write_config_word(dev, master_port, master_data); - if (is_slave) + if (is_slave) { + if (ap->port_no == 0) { + u8 tmp = slave_data; + + while (slave_data == tmp) { + pci_read_config_byte(dev, slave_port, &tmp); + msleep(50); + } + + dev_printk(KERN_ERR, &dev->dev, "PATA parallel scan " + "race detected\n"); + } pci_write_config_byte(dev, slave_port, slave_data); + } /* Ensure the UDMA bit is off - it will be turned back on if UDMA is selected */ and it indeed triggered the error message. Lets fix all such races by adding an extra locking to ->set_piomode and ->set_dmamode methods for PATA controllers. [ Alan: would be better to take the host lock in libata-core for these cases so that we fix all the adapters in one swoop. "Looks fine as a temproary quickfix tho" ] Cc: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Alan Cox <alan@linux.intel.com> Cc: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-08-30 20:56:30 +08:00
static DEFINE_SPINLOCK(piix_lock);
static void piix_set_timings(struct ata_port *ap, struct ata_device *adev,
u8 pio)
{
struct pci_dev *dev = to_pci_dev(ap->host->dev);
ata_piix: parallel scanning on PATA needs an extra locking Commit log for commit 517d3cc15b36392e518abab6bacbb72089658313 ("[libata] ata_piix: Enable parallel scan") says: This patch turns on parallel scanning for the ata_piix driver. This driver is used on most netbooks (no AHCI for cheap storage it seems). The scan is the dominating time factor in the kernel boot for these devices; with this flag it gets cut in half for the device I used for testing (eeepc). Alan took a look at the driver source and concluded that it ought to be safe to do for this driver. Alan has also checked with the hardware team. and it is all true but once we put all things together additional constraints for PATA controllers show up (some hardware registers have per-host not per-port atomicity) and we risk misprogramming the controller. I used the following test to check whether the issue is real: @@ -736,8 +736,20 @@ static void piix_set_piomode(struct ata_ (timings[pio][1] << 8); } pci_write_config_word(dev, master_port, master_data); - if (is_slave) + if (is_slave) { + if (ap->port_no == 0) { + u8 tmp = slave_data; + + while (slave_data == tmp) { + pci_read_config_byte(dev, slave_port, &tmp); + msleep(50); + } + + dev_printk(KERN_ERR, &dev->dev, "PATA parallel scan " + "race detected\n"); + } pci_write_config_byte(dev, slave_port, slave_data); + } /* Ensure the UDMA bit is off - it will be turned back on if UDMA is selected */ and it indeed triggered the error message. Lets fix all such races by adding an extra locking to ->set_piomode and ->set_dmamode methods for PATA controllers. [ Alan: would be better to take the host lock in libata-core for these cases so that we fix all the adapters in one swoop. "Looks fine as a temproary quickfix tho" ] Cc: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Alan Cox <alan@linux.intel.com> Cc: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-08-30 20:56:30 +08:00
unsigned long flags;
unsigned int is_slave = (adev->devno != 0);
unsigned int master_port= ap->port_no ? 0x42 : 0x40;
unsigned int slave_port = 0x44;
u16 master_data;
u8 slave_data;
u8 udma_enable;
int control = 0;
/*
* See Intel Document 298600-004 for the timing programing rules
* for ICH controllers.
*/
static const /* ISP RTC */
u8 timings[][2] = { { 0, 0 },
{ 0, 0 },
{ 1, 0 },
{ 2, 1 },
{ 2, 3 }, };
if (pio >= 2)
control |= 1; /* TIME1 enable */
if (ata_pio_need_iordy(adev))
control |= 2; /* IE enable */
/* Intel specifies that the PPE functionality is for disk only */
if (adev->class == ATA_DEV_ATA)
control |= 4; /* PPE enable */
/*
* If the drive MWDMA is faster than it can do PIO then
* we must force PIO into PIO0
*/
if (adev->pio_mode < XFER_PIO_0 + pio)
/* Enable DMA timing only */
control |= 8; /* PIO cycles in PIO0 */
ata_piix: parallel scanning on PATA needs an extra locking Commit log for commit 517d3cc15b36392e518abab6bacbb72089658313 ("[libata] ata_piix: Enable parallel scan") says: This patch turns on parallel scanning for the ata_piix driver. This driver is used on most netbooks (no AHCI for cheap storage it seems). The scan is the dominating time factor in the kernel boot for these devices; with this flag it gets cut in half for the device I used for testing (eeepc). Alan took a look at the driver source and concluded that it ought to be safe to do for this driver. Alan has also checked with the hardware team. and it is all true but once we put all things together additional constraints for PATA controllers show up (some hardware registers have per-host not per-port atomicity) and we risk misprogramming the controller. I used the following test to check whether the issue is real: @@ -736,8 +736,20 @@ static void piix_set_piomode(struct ata_ (timings[pio][1] << 8); } pci_write_config_word(dev, master_port, master_data); - if (is_slave) + if (is_slave) { + if (ap->port_no == 0) { + u8 tmp = slave_data; + + while (slave_data == tmp) { + pci_read_config_byte(dev, slave_port, &tmp); + msleep(50); + } + + dev_printk(KERN_ERR, &dev->dev, "PATA parallel scan " + "race detected\n"); + } pci_write_config_byte(dev, slave_port, slave_data); + } /* Ensure the UDMA bit is off - it will be turned back on if UDMA is selected */ and it indeed triggered the error message. Lets fix all such races by adding an extra locking to ->set_piomode and ->set_dmamode methods for PATA controllers. [ Alan: would be better to take the host lock in libata-core for these cases so that we fix all the adapters in one swoop. "Looks fine as a temproary quickfix tho" ] Cc: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Alan Cox <alan@linux.intel.com> Cc: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-08-30 20:56:30 +08:00
spin_lock_irqsave(&piix_lock, flags);
/* PIO configuration clears DTE unconditionally. It will be
* programmed in set_dmamode which is guaranteed to be called
* after set_piomode if any DMA mode is available.
*/
pci_read_config_word(dev, master_port, &master_data);
if (is_slave) {
/* clear TIME1|IE1|PPE1|DTE1 */
master_data &= 0xff0f;
/* enable PPE1, IE1 and TIME1 as needed */
master_data |= (control << 4);
pci_read_config_byte(dev, slave_port, &slave_data);
slave_data &= (ap->port_no ? 0x0f : 0xf0);
/* Load the timing nibble for this slave */
slave_data |= ((timings[pio][0] << 2) | timings[pio][1])
<< (ap->port_no ? 4 : 0);
} else {
/* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */
master_data &= 0xccf0;
/* Enable PPE, IE and TIME as appropriate */
master_data |= control;
/* load ISP and RCT */
master_data |=
(timings[pio][0] << 12) |
(timings[pio][1] << 8);
}
/* Enable SITRE (separate slave timing register) */
master_data |= 0x4000;
pci_write_config_word(dev, master_port, master_data);
if (is_slave)
pci_write_config_byte(dev, slave_port, slave_data);
/* Ensure the UDMA bit is off - it will be turned back on if
UDMA is selected */
if (ap->udma_mask) {
pci_read_config_byte(dev, 0x48, &udma_enable);
udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
pci_write_config_byte(dev, 0x48, udma_enable);
}
ata_piix: parallel scanning on PATA needs an extra locking Commit log for commit 517d3cc15b36392e518abab6bacbb72089658313 ("[libata] ata_piix: Enable parallel scan") says: This patch turns on parallel scanning for the ata_piix driver. This driver is used on most netbooks (no AHCI for cheap storage it seems). The scan is the dominating time factor in the kernel boot for these devices; with this flag it gets cut in half for the device I used for testing (eeepc). Alan took a look at the driver source and concluded that it ought to be safe to do for this driver. Alan has also checked with the hardware team. and it is all true but once we put all things together additional constraints for PATA controllers show up (some hardware registers have per-host not per-port atomicity) and we risk misprogramming the controller. I used the following test to check whether the issue is real: @@ -736,8 +736,20 @@ static void piix_set_piomode(struct ata_ (timings[pio][1] << 8); } pci_write_config_word(dev, master_port, master_data); - if (is_slave) + if (is_slave) { + if (ap->port_no == 0) { + u8 tmp = slave_data; + + while (slave_data == tmp) { + pci_read_config_byte(dev, slave_port, &tmp); + msleep(50); + } + + dev_printk(KERN_ERR, &dev->dev, "PATA parallel scan " + "race detected\n"); + } pci_write_config_byte(dev, slave_port, slave_data); + } /* Ensure the UDMA bit is off - it will be turned back on if UDMA is selected */ and it indeed triggered the error message. Lets fix all such races by adding an extra locking to ->set_piomode and ->set_dmamode methods for PATA controllers. [ Alan: would be better to take the host lock in libata-core for these cases so that we fix all the adapters in one swoop. "Looks fine as a temproary quickfix tho" ] Cc: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Alan Cox <alan@linux.intel.com> Cc: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-08-30 20:56:30 +08:00
spin_unlock_irqrestore(&piix_lock, flags);
}
/**
* piix_set_piomode - Initialize host controller PATA PIO timings
* @ap: Port whose timings we are configuring
* @adev: Drive in question
*
* Set PIO mode for device, in host controller PCI config space.
*
* LOCKING:
* None (inherited from caller).
*/
static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
piix_set_timings(ap, adev, adev->pio_mode - XFER_PIO_0);
}
/**
* do_pata_set_dmamode - Initialize host controller PATA PIO timings
* @ap: Port whose timings we are configuring
* @adev: Drive in question
* @isich: set if the chip is an ICH device
*
* Set UDMA mode for device, in host controller PCI config space.
*
* LOCKING:
* None (inherited from caller).
*/
static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, int isich)
{
struct pci_dev *dev = to_pci_dev(ap->host->dev);
ata_piix: parallel scanning on PATA needs an extra locking Commit log for commit 517d3cc15b36392e518abab6bacbb72089658313 ("[libata] ata_piix: Enable parallel scan") says: This patch turns on parallel scanning for the ata_piix driver. This driver is used on most netbooks (no AHCI for cheap storage it seems). The scan is the dominating time factor in the kernel boot for these devices; with this flag it gets cut in half for the device I used for testing (eeepc). Alan took a look at the driver source and concluded that it ought to be safe to do for this driver. Alan has also checked with the hardware team. and it is all true but once we put all things together additional constraints for PATA controllers show up (some hardware registers have per-host not per-port atomicity) and we risk misprogramming the controller. I used the following test to check whether the issue is real: @@ -736,8 +736,20 @@ static void piix_set_piomode(struct ata_ (timings[pio][1] << 8); } pci_write_config_word(dev, master_port, master_data); - if (is_slave) + if (is_slave) { + if (ap->port_no == 0) { + u8 tmp = slave_data; + + while (slave_data == tmp) { + pci_read_config_byte(dev, slave_port, &tmp); + msleep(50); + } + + dev_printk(KERN_ERR, &dev->dev, "PATA parallel scan " + "race detected\n"); + } pci_write_config_byte(dev, slave_port, slave_data); + } /* Ensure the UDMA bit is off - it will be turned back on if UDMA is selected */ and it indeed triggered the error message. Lets fix all such races by adding an extra locking to ->set_piomode and ->set_dmamode methods for PATA controllers. [ Alan: would be better to take the host lock in libata-core for these cases so that we fix all the adapters in one swoop. "Looks fine as a temproary quickfix tho" ] Cc: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Alan Cox <alan@linux.intel.com> Cc: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-08-30 20:56:30 +08:00
unsigned long flags;
u8 speed = adev->dma_mode;
int devid = adev->devno + 2 * ap->port_no;
u8 udma_enable = 0;
if (speed >= XFER_UDMA_0) {
unsigned int udma = speed - XFER_UDMA_0;
u16 udma_timing;
u16 ideconf;
int u_clock, u_speed;
spin_lock_irqsave(&piix_lock, flags);
pci_read_config_byte(dev, 0x48, &udma_enable);
/*
* UDMA is handled by a combination of clock switching and
* selection of dividers
*
* Handy rule: Odd modes are UDMATIMx 01, even are 02
* except UDMA0 which is 00
*/
u_speed = min(2 - (udma & 1), udma);
if (udma == 5)
u_clock = 0x1000; /* 100Mhz */
else if (udma > 2)
u_clock = 1; /* 66Mhz */
else
u_clock = 0; /* 33Mhz */
udma_enable |= (1 << devid);
/* Load the CT/RP selection */
pci_read_config_word(dev, 0x4A, &udma_timing);
udma_timing &= ~(3 << (4 * devid));
udma_timing |= u_speed << (4 * devid);
pci_write_config_word(dev, 0x4A, udma_timing);
if (isich) {
/* Select a 33/66/100Mhz clock */
pci_read_config_word(dev, 0x54, &ideconf);
ideconf &= ~(0x1001 << devid);
ideconf |= u_clock << devid;
/* For ICH or later we should set bit 10 for better
performance (WR_PingPong_En) */
pci_write_config_word(dev, 0x54, ideconf);
}
pci_write_config_byte(dev, 0x48, udma_enable);
spin_unlock_irqrestore(&piix_lock, flags);
} else {
/* MWDMA is driven by the PIO timings. */
unsigned int mwdma = speed - XFER_MW_DMA_0;
const unsigned int needed_pio[3] = {
XFER_PIO_0, XFER_PIO_3, XFER_PIO_4
};
int pio = needed_pio[mwdma] - XFER_PIO_0;
/* XFER_PIO_0 is never used currently */
piix_set_timings(ap, adev, pio);
}
}
/**
* piix_set_dmamode - Initialize host controller PATA DMA timings
* @ap: Port whose timings we are configuring
* @adev: um
*
* Set MW/UDMA mode for device, in host controller PCI config space.
*
* LOCKING:
* None (inherited from caller).
*/
static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
do_pata_set_dmamode(ap, adev, 0);
}
/**
* ich_set_dmamode - Initialize host controller PATA DMA timings
* @ap: Port whose timings we are configuring
* @adev: um
*
* Set MW/UDMA mode for device, in host controller PCI config space.
*
* LOCKING:
* None (inherited from caller).
*/
static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
do_pata_set_dmamode(ap, adev, 1);
}
/*
* Serial ATA Index/Data Pair Superset Registers access
*
* Beginning from ICH8, there's a sane way to access SCRs using index
* and data register pair located at BAR5 which means that we have
* separate SCRs for master and slave. This is handled using libata
* slave_link facility.
*/
static const int piix_sidx_map[] = {
[SCR_STATUS] = 0,
[SCR_ERROR] = 2,
[SCR_CONTROL] = 1,
};
static void piix_sidpr_sel(struct ata_link *link, unsigned int reg)
{
struct ata_port *ap = link->ap;
struct piix_host_priv *hpriv = ap->host->private_data;
iowrite32(((ap->port_no * 2 + link->pmp) << 8) | piix_sidx_map[reg],
hpriv->sidpr + PIIX_SIDPR_IDX);
}
static int piix_sidpr_scr_read(struct ata_link *link,
unsigned int reg, u32 *val)
{
struct piix_host_priv *hpriv = link->ap->host->private_data;
if (reg >= ARRAY_SIZE(piix_sidx_map))
return -EINVAL;
piix_sidpr_sel(link, reg);
*val = ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
return 0;
}
static int piix_sidpr_scr_write(struct ata_link *link,
unsigned int reg, u32 val)
{
struct piix_host_priv *hpriv = link->ap->host->private_data;
if (reg >= ARRAY_SIZE(piix_sidx_map))
return -EINVAL;
piix_sidpr_sel(link, reg);
iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
return 0;
}
static int piix_sidpr_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
unsigned hints)
{
return sata_link_scr_lpm(link, policy, false);
}
libata: implement spurious irq handling for SFF and apply it to piix Traditional IDE interface sucks in that it doesn't have a reliable IRQ pending bit, so if the controller raises IRQ while the driver is expecting it not to, the IRQ won't be cleared and eventually the IRQ line will be killed by interrupt subsystem. Some controllers have non-standard mechanism to indicate IRQ pending so that this condition can be detected and worked around. This patch adds an optional operation ->sff_irq_check() which will be called for each port from the ata_sff_interrupt() if an unexpected interrupt is received. If the operation returns %true, ->sff_check_status() and ->sff_irq_clear() will be cleared for the port. Note that this doesn't mark the interrupt as handled so it won't prevent IRQ subsystem from killing the IRQ if this mechanism fails to clear the spurious IRQ. This patch also implements ->sff_irq_check() for ata_piix. Note that this adds slight overhead to shared IRQ operation as IRQs which are destined for other controllers will trigger extra register accesses to check whether IDE interrupt is pending but this solves rare screaming IRQ cases and for some curious reason also helps weird BIOS related glitch on Samsung n130 as reported in bko#14314. http://bugzilla.kernel.org/show_bug.cgi?id=14314 * piix_base_ops dropped as suggested by Sergei. * Spurious IRQ detection doesn't kick in anymore if polling qc is in progress. This provides less protection but some controllers have possible data corruption issues if the wrong register is accessed while a command is in progress. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Johannes Stezenbach <js@sig21.net> Reported-by: Hans Werner <hwerner4@gmx.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-01-19 09:49:19 +08:00
static bool piix_irq_check(struct ata_port *ap)
{
if (unlikely(!ap->ioaddr.bmdma_addr))
return false;
return ap->ops->bmdma_status(ap) & ATA_DMA_INTR;
}
#ifdef CONFIG_PM
static int piix_broken_suspend(void)
{
static const struct dmi_system_id sysids[] = {
{
.ident = "TECRA M3",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M3"),
},
},
{
.ident = "TECRA M3",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"),
},
},
{
.ident = "TECRA M4",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"),
},
},
{
.ident = "TECRA M4",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M4"),
},
},
{
.ident = "TECRA M5",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"),
},
},
{
.ident = "TECRA M6",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"),
},
},
{
.ident = "TECRA M7",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"),
},
},
{
.ident = "TECRA A8",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"),
},
},
{
.ident = "Satellite R20",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"),
},
},
{
.ident = "Satellite R25",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R25"),
},
},
{
.ident = "Satellite U200",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U200"),
},
},
{
.ident = "Satellite U200",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U200"),
},
},
{
.ident = "Satellite Pro U200",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE PRO U200"),
},
},
{
.ident = "Satellite U205",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"),
},
},
{
.ident = "SATELLITE U205",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"),
},
},
{
.ident = "Satellite Pro A120",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite Pro A120"),
},
},
{
.ident = "Portege M500",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"),
},
},
{
.ident = "VGN-BX297XP",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
DMI_MATCH(DMI_PRODUCT_NAME, "VGN-BX297XP"),
},
},
{ } /* terminate list */
};
static const char *oemstrs[] = {
"Tecra M3,",
};
int i;
if (dmi_check_system(sysids))
return 1;
for (i = 0; i < ARRAY_SIZE(oemstrs); i++)
if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL))
return 1;
/* TECRA M4 sometimes forgets its identify and reports bogus
* DMI information. As the bogus information is a bit
* generic, match as many entries as possible. This manual
* matching is necessary because dmi_system_id.matches is
* limited to four entries.
*/
if (dmi_match(DMI_SYS_VENDOR, "TOSHIBA") &&
dmi_match(DMI_PRODUCT_NAME, "000000") &&
dmi_match(DMI_PRODUCT_VERSION, "000000") &&
dmi_match(DMI_PRODUCT_SERIAL, "000000") &&
dmi_match(DMI_BOARD_VENDOR, "TOSHIBA") &&
dmi_match(DMI_BOARD_NAME, "Portable PC") &&
dmi_match(DMI_BOARD_VERSION, "Version A0"))
return 1;
return 0;
}
static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
{
struct ata_host *host = dev_get_drvdata(&pdev->dev);
unsigned long flags;
int rc = 0;
rc = ata_host_suspend(host, mesg);
if (rc)
return rc;
/* Some braindamaged ACPI suspend implementations expect the
* controller to be awake on entry; otherwise, it burns cpu
* cycles and power trying to do something to the sleeping
* beauty.
*/
if (piix_broken_suspend() && (mesg.event & PM_EVENT_SLEEP)) {
pci_save_state(pdev);
/* mark its power state as "unknown", since we don't
* know if e.g. the BIOS will change its device state
* when we suspend.
*/
if (pdev->current_state == PCI_D0)
pdev->current_state = PCI_UNKNOWN;
/* tell resume that it's waking up from broken suspend */
spin_lock_irqsave(&host->lock, flags);
host->flags |= PIIX_HOST_BROKEN_SUSPEND;
spin_unlock_irqrestore(&host->lock, flags);
} else
ata_pci_device_do_suspend(pdev, mesg);
return 0;
}
static int piix_pci_device_resume(struct pci_dev *pdev)
{
struct ata_host *host = dev_get_drvdata(&pdev->dev);
unsigned long flags;
int rc;
if (host->flags & PIIX_HOST_BROKEN_SUSPEND) {
spin_lock_irqsave(&host->lock, flags);
host->flags &= ~PIIX_HOST_BROKEN_SUSPEND;
spin_unlock_irqrestore(&host->lock, flags);
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
/* PCI device wasn't disabled during suspend. Use
* pci_reenable_device() to avoid affecting the enable
* count.
*/
rc = pci_reenable_device(pdev);
if (rc)
dev_err(&pdev->dev,
"failed to enable device after resume (%d)\n",
rc);
} else
rc = ata_pci_device_do_resume(pdev);
if (rc == 0)
ata_host_resume(host);
return rc;
}
#endif
static u8 piix_vmw_bmdma_status(struct ata_port *ap)
{
return ata_bmdma_status(ap) & ~ATA_DMA_ERR;
}
static struct scsi_host_template piix_sht = {
ATA_BMDMA_SHT(DRV_NAME),
};
static struct ata_port_operations piix_sata_ops = {
.inherits = &ata_bmdma32_port_ops,
.sff_irq_check = piix_irq_check,
.port_start = piix_port_start,
};
static struct ata_port_operations piix_pata_ops = {
.inherits = &piix_sata_ops,
.cable_detect = ata_cable_40wire,
.set_piomode = piix_set_piomode,
.set_dmamode = piix_set_dmamode,
.prereset = piix_pata_prereset,
};
static struct ata_port_operations piix_vmw_ops = {
.inherits = &piix_pata_ops,
.bmdma_status = piix_vmw_bmdma_status,
};
static struct ata_port_operations ich_pata_ops = {
.inherits = &piix_pata_ops,
.cable_detect = ich_pata_cable_detect,
.set_dmamode = ich_set_dmamode,
};
static struct device_attribute *piix_sidpr_shost_attrs[] = {
&dev_attr_link_power_management_policy,
NULL
};
static struct scsi_host_template piix_sidpr_sht = {
ATA_BMDMA_SHT(DRV_NAME),
.shost_attrs = piix_sidpr_shost_attrs,
};
static struct ata_port_operations piix_sidpr_sata_ops = {
.inherits = &piix_sata_ops,
.hardreset = sata_std_hardreset,
.scr_read = piix_sidpr_scr_read,
.scr_write = piix_sidpr_scr_write,
.set_lpm = piix_sidpr_set_lpm,
};
static struct ata_port_info piix_port_info[] = {
[piix_pata_mwdma] = /* PIIX3 MWDMA only */
{
.flags = PIIX_PATA_FLAGS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
.port_ops = &piix_pata_ops,
},
[piix_pata_33] = /* PIIX4 at 33MHz */
{
.flags = PIIX_PATA_FLAGS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
.udma_mask = ATA_UDMA2,
.port_ops = &piix_pata_ops,
},
[ich_pata_33] = /* ICH0 - ICH at 33Mhz*/
{
.flags = PIIX_PATA_FLAGS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA12_ONLY, /* Check: maybe MWDMA0 is ok */
.udma_mask = ATA_UDMA2,
.port_ops = &ich_pata_ops,
},
[ich_pata_66] = /* ICH controllers up to 66MHz */
{
.flags = PIIX_PATA_FLAGS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA12_ONLY, /* MWDMA0 is broken on chip */
.udma_mask = ATA_UDMA4,
.port_ops = &ich_pata_ops,
},
[ich_pata_100] =
{
.flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA12_ONLY,
.udma_mask = ATA_UDMA5,
.port_ops = &ich_pata_ops,
},
[ich_pata_100_nomwdma1] =
{
.flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2_ONLY,
.udma_mask = ATA_UDMA5,
.port_ops = &ich_pata_ops,
},
[ich5_sata] =
{
.flags = PIIX_SATA_FLAGS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &piix_sata_ops,
},
[ich6_sata] =
{
.flags = PIIX_SATA_FLAGS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &piix_sata_ops,
},
[ich6m_sata] =
{
.flags = PIIX_SATA_FLAGS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &piix_sata_ops,
},
[ich8_sata] =
{
.flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &piix_sata_ops,
},
[ich8_2port_sata] =
{
.flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &piix_sata_ops,
},
[tolapai_sata] =
{
.flags = PIIX_SATA_FLAGS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &piix_sata_ops,
},
[ich8m_apple_sata] =
{
.flags = PIIX_SATA_FLAGS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &piix_sata_ops,
},
[piix_pata_vmw] =
{
.flags = PIIX_PATA_FLAGS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
.udma_mask = ATA_UDMA2,
.port_ops = &piix_vmw_ops,
},
/*
* some Sandybridge chipsets have broken 32 mode up to now,
* see https://bugzilla.kernel.org/show_bug.cgi?id=40592
*/
[ich8_sata_snb] =
{
.flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &piix_sata_ops,
},
[ich8_2port_sata_snb] =
{
.flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR
| PIIX_FLAG_PIO16,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &piix_sata_ops,
},
};
#define AHCI_PCI_BAR 5
#define AHCI_GLOBAL_CTL 0x04
#define AHCI_ENABLE (1 << 31)
static int piix_disable_ahci(struct pci_dev *pdev)
{
void __iomem *mmio;
u32 tmp;
int rc = 0;
/* BUG: pci_enable_device has not yet been called. This
* works because this device is usually set up by BIOS.
*/
if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
!pci_resource_len(pdev, AHCI_PCI_BAR))
return 0;
mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
if (!mmio)
return -ENOMEM;
tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
if (tmp & AHCI_ENABLE) {
tmp &= ~AHCI_ENABLE;
iowrite32(tmp, mmio + AHCI_GLOBAL_CTL);
tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
if (tmp & AHCI_ENABLE)
rc = -EIO;
}
pci_iounmap(pdev, mmio);
return rc;
}
/**
* piix_check_450nx_errata - Check for problem 450NX setup
* @ata_dev: the PCI device to check
*
* Check for the present of 450NX errata #19 and errata #25. If
* they are found return an error code so we can turn off DMA
*/
static int piix_check_450nx_errata(struct pci_dev *ata_dev)
{
struct pci_dev *pdev = NULL;
u16 cfg;
int no_piix_dma = 0;
while ((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) {
/* Look for 450NX PXB. Check for problem configurations
A PCI quirk checks bit 6 already */
pci_read_config_word(pdev, 0x41, &cfg);
/* Only on the original revision: IDE DMA can hang */
if (pdev->revision == 0x00)
no_piix_dma = 1;
/* On all revisions below 5 PXB bus lock must be disabled for IDE */
else if (cfg & (1<<14) && pdev->revision < 5)
no_piix_dma = 2;
}
if (no_piix_dma)
dev_warn(&ata_dev->dev,
"450NX errata present, disabling IDE DMA%s\n",
no_piix_dma == 2 ? " - a BIOS update may resolve this"
: "");
return no_piix_dma;
}
static void piix_init_pcs(struct ata_host *host,
const struct piix_map_db *map_db)
{
struct pci_dev *pdev = to_pci_dev(host->dev);
u16 pcs, new_pcs;
pci_read_config_word(pdev, ICH5_PCS, &pcs);
new_pcs = pcs | map_db->port_enable;
if (new_pcs != pcs) {
DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs);
pci_write_config_word(pdev, ICH5_PCS, new_pcs);
msleep(150);
}
}
static const int *piix_init_sata_map(struct pci_dev *pdev,
struct ata_port_info *pinfo,
const struct piix_map_db *map_db)
{
const int *map;
int i, invalid_map = 0;
u8 map_value;
pci_read_config_byte(pdev, ICH5_PMR, &map_value);
map = map_db->map[map_value & map_db->mask];
dev_info(&pdev->dev, "MAP [");
for (i = 0; i < 4; i++) {
switch (map[i]) {
case RV:
invalid_map = 1;
pr_cont(" XX");
break;
case NA:
pr_cont(" --");
break;
case IDE:
WARN_ON((i & 1) || map[i + 1] != IDE);
pinfo[i / 2] = piix_port_info[ich_pata_100];
i++;
pr_cont(" IDE IDE");
break;
default:
pr_cont(" P%d", map[i]);
if (i & 1)
pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
break;
}
}
pr_cont(" ]\n");
if (invalid_map)
dev_err(&pdev->dev, "invalid MAP value %u\n", map_value);
return map;
}
static bool piix_no_sidpr(struct ata_host *host)
{
struct pci_dev *pdev = to_pci_dev(host->dev);
/*
* Samsung DB-P70 only has three ATA ports exposed and
* curiously the unconnected first port reports link online
* while not responding to SRST protocol causing excessive
* detection delay.
*
* Unfortunately, the system doesn't carry enough DMI
* information to identify the machine but does have subsystem
* vendor and device set. As it's unclear whether the
* subsystem vendor/device is used only for this specific
* board, the port can't be disabled solely with the
* information; however, turning off SIDPR access works around
* the problem. Turn it off.
*
* This problem is reported in bnc#441240.
*
* https://bugzilla.novell.com/show_bug.cgi?id=441420
*/
if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2920 &&
pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG &&
pdev->subsystem_device == 0xb049) {
dev_warn(host->dev,
"Samsung DB-P70 detected, disabling SIDPR\n");
return true;
}
return false;
}
static int piix_init_sidpr(struct ata_host *host)
{
struct pci_dev *pdev = to_pci_dev(host->dev);
struct piix_host_priv *hpriv = host->private_data;
struct ata_link *link0 = &host->ports[0]->link;
u32 scontrol;
int i, rc;
/* check for availability */
for (i = 0; i < 4; i++)
if (hpriv->map[i] == IDE)
return 0;
/* is it blacklisted? */
if (piix_no_sidpr(host))
return 0;
if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))
return 0;
if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 ||
pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
return 0;
if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME))
return 0;
hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];
/* SCR access via SIDPR doesn't work on some configurations.
* Give it a test drive by inhibiting power save modes which
* we'll do anyway.
*/
piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
/* if IPM is already 3, SCR access is probably working. Don't
* un-inhibit power save modes as BIOS might have inhibited
* them for a reason.
*/
if ((scontrol & 0xf00) != 0x300) {
scontrol |= 0x300;
piix_sidpr_scr_write(link0, SCR_CONTROL, scontrol);
piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
if ((scontrol & 0xf00) != 0x300) {
dev_info(host->dev,
"SCR access via SIDPR is available but doesn't work\n");
return 0;
}
}
/* okay, SCRs available, set ops and ask libata for slave_link */
for (i = 0; i < 2; i++) {
struct ata_port *ap = host->ports[i];
ap->ops = &piix_sidpr_sata_ops;
if (ap->flags & ATA_FLAG_SLAVE_POSS) {
rc = ata_slave_link_init(ap);
if (rc)
return rc;
}
}
return 0;
}
static void piix_iocfg_bit18_quirk(struct ata_host *host)
{
static const struct dmi_system_id sysids[] = {
{
/* Clevo M570U sets IOCFG bit 18 if the cdrom
* isn't used to boot the system which
* disables the channel.
*/
.ident = "M570U",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
DMI_MATCH(DMI_PRODUCT_NAME, "M570U"),
},
},
{ } /* terminate list */
};
struct pci_dev *pdev = to_pci_dev(host->dev);
struct piix_host_priv *hpriv = host->private_data;
if (!dmi_check_system(sysids))
return;
/* The datasheet says that bit 18 is NOOP but certain systems
* seem to use it to disable a channel. Clear the bit on the
* affected systems.
*/
if (hpriv->saved_iocfg & (1 << 18)) {
dev_info(&pdev->dev, "applying IOCFG bit18 quirk\n");
pci_write_config_dword(pdev, PIIX_IOCFG,
hpriv->saved_iocfg & ~(1 << 18));
}
}
static bool piix_broken_system_poweroff(struct pci_dev *pdev)
{
static const struct dmi_system_id broken_systems[] = {
{
.ident = "HP Compaq 2510p",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 2510p"),
},
/* PCI slot number of the controller */
.driver_data = (void *)0x1FUL,
},
{
.ident = "HP Compaq nc6000",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nc6000"),
},
/* PCI slot number of the controller */
.driver_data = (void *)0x1FUL,
},
{ } /* terminate list */
};
const struct dmi_system_id *dmi = dmi_first_match(broken_systems);
if (dmi) {
unsigned long slot = (unsigned long)dmi->driver_data;
/* apply the quirk only to on-board controllers */
return slot == PCI_SLOT(pdev->devfn);
}
return false;
}
static int prefer_ms_hyperv = 1;
module_param(prefer_ms_hyperv, int, 0);
MODULE_PARM_DESC(prefer_ms_hyperv,
"Prefer Hyper-V paravirtualization drivers instead of ATA, "
"0 - Use ATA drivers, "
"1 (Default) - Use the paravirtualization drivers.");
static void piix_ignore_devices_quirk(struct ata_host *host)
{
#if IS_ENABLED(CONFIG_HYPERV_STORAGE)
static const struct dmi_system_id ignore_hyperv[] = {
{
/* On Hyper-V hypervisors the disks are exposed on
* both the emulated SATA controller and on the
* paravirtualised drivers. The CD/DVD devices
* are only exposed on the emulated controller.
* Request we ignore ATA devices on this host.
*/
.ident = "Hyper-V Virtual Machine",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR,
"Microsoft Corporation"),
DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
},
},
{ } /* terminate list */
};
ata_piix: reenable MS Virtual PC guests An earlier commit cd006086fa5d91414d8ff9ff2b78fbb593878e3c ("ata_piix: defer disks to the Hyper-V drivers by default") broke MS Virtual PC guests. Hyper-V guests and Virtual PC guests have nearly identical DMI info. As a result the driver does currently ignore the emulated hardware in Virtual PC guests and defers the handling to hv_blkvsc. Since Virtual PC does not offer paravirtualized drivers no disks will be found in the guest. One difference in the DMI info is the product version. This patch adds a match for MS Virtual PC 2007 and "unignores" the emulated hardware. This was reported for openSuSE 12.1 in bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=737532 Here is a detailed list of DMI info from example guests: hwinfo --bios: virtual pc guest: System Info: #1 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "VS2005R2" Serial: "3178-9905-1533-4840-9282-0569-59" UUID: undefined, but settable Wake-up: 0x06 (Power Switch) Board Info: #2 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "5.0" Serial: "3178-9905-1533-4840-9282-0569-59" Chassis Info: #3 Manufacturer: "Microsoft Corporation" Version: "5.0" Serial: "3178-9905-1533-4840-9282-0569-59" Asset Tag: "7188-3705-6309-9738-9645-0364-00" Type: 0x03 (Desktop) Bootup State: 0x03 (Safe) Power Supply State: 0x03 (Safe) Thermal State: 0x01 (Other) Security Status: 0x01 (Other) win2k8 guest: System Info: #1 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "9106-3420-9819-5495-1514-2075-48" UUID: undefined, but settable Wake-up: 0x06 (Power Switch) Board Info: #2 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "9106-3420-9819-5495-1514-2075-48" Chassis Info: #3 Manufacturer: "Microsoft Corporation" Version: "7.0" Serial: "9106-3420-9819-5495-1514-2075-48" Asset Tag: "7076-9522-6699-1042-9501-1785-77" Type: 0x03 (Desktop) Bootup State: 0x03 (Safe) Power Supply State: 0x03 (Safe) Thermal State: 0x01 (Other) Security Status: 0x01 (Other) win2k12 guest: System Info: #1 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "8179-1954-0187-0085-3868-2270-14" UUID: undefined, but settable Wake-up: 0x06 (Power Switch) Board Info: #2 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "8179-1954-0187-0085-3868-2270-14" Chassis Info: #3 Manufacturer: "Microsoft Corporation" Version: "7.0" Serial: "8179-1954-0187-0085-3868-2270-14" Asset Tag: "8374-0485-4557-6331-0620-5845-25" Type: 0x03 (Desktop) Bootup State: 0x03 (Safe) Power Supply State: 0x03 (Safe) Thermal State: 0x01 (Other) Security Status: 0x01 (Other) Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-09-18 23:48:01 +08:00
static const struct dmi_system_id allow_virtual_pc[] = {
{
/* In MS Virtual PC guests the DMI ident is nearly
* identical to a Hyper-V guest. One difference is the
* product version which is used here to identify
* a Virtual PC guest. This entry allows ata_piix to
* drive the emulated hardware.
*/
.ident = "MS Virtual PC 2007",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR,
"Microsoft Corporation"),
DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
DMI_MATCH(DMI_PRODUCT_VERSION, "VS2005R2"),
},
},
{ } /* terminate list */
};
const struct dmi_system_id *ignore = dmi_first_match(ignore_hyperv);
const struct dmi_system_id *allow = dmi_first_match(allow_virtual_pc);
ata_piix: reenable MS Virtual PC guests An earlier commit cd006086fa5d91414d8ff9ff2b78fbb593878e3c ("ata_piix: defer disks to the Hyper-V drivers by default") broke MS Virtual PC guests. Hyper-V guests and Virtual PC guests have nearly identical DMI info. As a result the driver does currently ignore the emulated hardware in Virtual PC guests and defers the handling to hv_blkvsc. Since Virtual PC does not offer paravirtualized drivers no disks will be found in the guest. One difference in the DMI info is the product version. This patch adds a match for MS Virtual PC 2007 and "unignores" the emulated hardware. This was reported for openSuSE 12.1 in bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=737532 Here is a detailed list of DMI info from example guests: hwinfo --bios: virtual pc guest: System Info: #1 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "VS2005R2" Serial: "3178-9905-1533-4840-9282-0569-59" UUID: undefined, but settable Wake-up: 0x06 (Power Switch) Board Info: #2 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "5.0" Serial: "3178-9905-1533-4840-9282-0569-59" Chassis Info: #3 Manufacturer: "Microsoft Corporation" Version: "5.0" Serial: "3178-9905-1533-4840-9282-0569-59" Asset Tag: "7188-3705-6309-9738-9645-0364-00" Type: 0x03 (Desktop) Bootup State: 0x03 (Safe) Power Supply State: 0x03 (Safe) Thermal State: 0x01 (Other) Security Status: 0x01 (Other) win2k8 guest: System Info: #1 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "9106-3420-9819-5495-1514-2075-48" UUID: undefined, but settable Wake-up: 0x06 (Power Switch) Board Info: #2 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "9106-3420-9819-5495-1514-2075-48" Chassis Info: #3 Manufacturer: "Microsoft Corporation" Version: "7.0" Serial: "9106-3420-9819-5495-1514-2075-48" Asset Tag: "7076-9522-6699-1042-9501-1785-77" Type: 0x03 (Desktop) Bootup State: 0x03 (Safe) Power Supply State: 0x03 (Safe) Thermal State: 0x01 (Other) Security Status: 0x01 (Other) win2k12 guest: System Info: #1 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "8179-1954-0187-0085-3868-2270-14" UUID: undefined, but settable Wake-up: 0x06 (Power Switch) Board Info: #2 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "8179-1954-0187-0085-3868-2270-14" Chassis Info: #3 Manufacturer: "Microsoft Corporation" Version: "7.0" Serial: "8179-1954-0187-0085-3868-2270-14" Asset Tag: "8374-0485-4557-6331-0620-5845-25" Type: 0x03 (Desktop) Bootup State: 0x03 (Safe) Power Supply State: 0x03 (Safe) Thermal State: 0x01 (Other) Security Status: 0x01 (Other) Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-09-18 23:48:01 +08:00
if (ignore && !allow && prefer_ms_hyperv) {
host->flags |= ATA_HOST_IGNORE_ATA;
dev_info(host->dev, "%s detected, ATA device ignore set\n",
ata_piix: reenable MS Virtual PC guests An earlier commit cd006086fa5d91414d8ff9ff2b78fbb593878e3c ("ata_piix: defer disks to the Hyper-V drivers by default") broke MS Virtual PC guests. Hyper-V guests and Virtual PC guests have nearly identical DMI info. As a result the driver does currently ignore the emulated hardware in Virtual PC guests and defers the handling to hv_blkvsc. Since Virtual PC does not offer paravirtualized drivers no disks will be found in the guest. One difference in the DMI info is the product version. This patch adds a match for MS Virtual PC 2007 and "unignores" the emulated hardware. This was reported for openSuSE 12.1 in bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=737532 Here is a detailed list of DMI info from example guests: hwinfo --bios: virtual pc guest: System Info: #1 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "VS2005R2" Serial: "3178-9905-1533-4840-9282-0569-59" UUID: undefined, but settable Wake-up: 0x06 (Power Switch) Board Info: #2 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "5.0" Serial: "3178-9905-1533-4840-9282-0569-59" Chassis Info: #3 Manufacturer: "Microsoft Corporation" Version: "5.0" Serial: "3178-9905-1533-4840-9282-0569-59" Asset Tag: "7188-3705-6309-9738-9645-0364-00" Type: 0x03 (Desktop) Bootup State: 0x03 (Safe) Power Supply State: 0x03 (Safe) Thermal State: 0x01 (Other) Security Status: 0x01 (Other) win2k8 guest: System Info: #1 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "9106-3420-9819-5495-1514-2075-48" UUID: undefined, but settable Wake-up: 0x06 (Power Switch) Board Info: #2 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "9106-3420-9819-5495-1514-2075-48" Chassis Info: #3 Manufacturer: "Microsoft Corporation" Version: "7.0" Serial: "9106-3420-9819-5495-1514-2075-48" Asset Tag: "7076-9522-6699-1042-9501-1785-77" Type: 0x03 (Desktop) Bootup State: 0x03 (Safe) Power Supply State: 0x03 (Safe) Thermal State: 0x01 (Other) Security Status: 0x01 (Other) win2k12 guest: System Info: #1 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "8179-1954-0187-0085-3868-2270-14" UUID: undefined, but settable Wake-up: 0x06 (Power Switch) Board Info: #2 Manufacturer: "Microsoft Corporation" Product: "Virtual Machine" Version: "7.0" Serial: "8179-1954-0187-0085-3868-2270-14" Chassis Info: #3 Manufacturer: "Microsoft Corporation" Version: "7.0" Serial: "8179-1954-0187-0085-3868-2270-14" Asset Tag: "8374-0485-4557-6331-0620-5845-25" Type: 0x03 (Desktop) Bootup State: 0x03 (Safe) Power Supply State: 0x03 (Safe) Thermal State: 0x01 (Other) Security Status: 0x01 (Other) Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-09-18 23:48:01 +08:00
ignore->ident);
}
#endif
}
/**
* piix_init_one - Register PIIX ATA PCI device with kernel services
* @pdev: PCI device to register
* @ent: Entry in piix_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 piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct device *dev = &pdev->dev;
struct ata_port_info port_info[2];
libata: clean up SFF init mess The intention of using port_mask in SFF init helpers was to eventually support exoctic configurations such as combination of legacy and native port on the same controller. This never became actually necessary and the related code always has been subtly broken one way or the other. Now that new init model is in place, there is no reason to make common helpers capable of handling all corner cases. Exotic cases can simply dealt within LLDs as necessary. This patch removes port_mask handling in SFF init helpers. SFF init helpers don't take n_ports argument and interpret it into port_mask anymore. All information is carried via port_info. n_ports argument is dropped and always two ports are allocated. LLD can tell SFF to skip certain port by marking it dummy. Note that SFF code has been treating unuvailable ports this way for a long time until recent breakage fix from Linus and is consistent with how other drivers handle with unavailable ports. This fixes 1-port legacy host handling still broken after the recent native mode fix and simplifies SFF init logic. The following changes are made... * ata_pci_init_native_host() and ata_init_legacy_host() both now try to initialized whatever they can and mark failed ports dummy. They return 0 if any port is successfully initialized. * ata_pci_prepare_native_host() and ata_pci_init_one() now doesn't take n_ports argument. All info should be specified via port_info array. Always two ports are allocated. * ata_pci_init_bmdma() exported to be used by LLDs in exotic cases. * port_info handling in all LLDs are standardized - all port_info arrays are const stack variable named ppi. Unless the second port is different from the first, its port_info is specified as NULL (tells libata that it's identical to the last non-NULL port_info). * pata_hpt37x/hpt3x2n: don't modify static variable directly. Make an on-stack copy instead as ata_piix does. * pata_uli: It has 4 ports instead of 2. Don't use ata_pci_prepare_native_host(). Allocate the host explicitly and use init helpers. It's simple enough. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-04 18:43:58 +08:00
const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
struct scsi_host_template *sht = &piix_sht;
unsigned long port_flags;
struct ata_host *host;
struct piix_host_priv *hpriv;
int rc;
ata_print_version_once(&pdev->dev, DRV_VERSION);
/* no hotplugging support for later devices (FIXME) */
if (!in_module_init && ent->driver_data >= ich5_sata)
return -ENODEV;
if (piix_broken_system_poweroff(pdev)) {
piix_port_info[ent->driver_data].flags |=
ATA_FLAG_NO_POWEROFF_SPINDOWN |
ATA_FLAG_NO_HIBERNATE_SPINDOWN;
dev_info(&pdev->dev, "quirky BIOS, skipping spindown "
"on poweroff and hibernation\n");
}
port_info[0] = piix_port_info[ent->driver_data];
port_info[1] = piix_port_info[ent->driver_data];
port_flags = port_info[0].flags;
/* enable device and prepare host */
rc = pcim_enable_device(pdev);
if (rc)
return rc;
hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
if (!hpriv)
return -ENOMEM;
/* Save IOCFG, this will be used for cable detection, quirk
* detection and restoration on detach. This is necessary
* because some ACPI implementations mess up cable related
* bits on _STM. Reported on kernel bz#11879.
*/
pci_read_config_dword(pdev, PIIX_IOCFG, &hpriv->saved_iocfg);
/* ICH6R may be driven by either ata_piix or ahci driver
* regardless of BIOS configuration. Make sure AHCI mode is
* off.
*/
if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2652) {
rc = piix_disable_ahci(pdev);
if (rc)
return rc;
}
/* SATA map init can change port_info, do it before prepping host */
if (port_flags & ATA_FLAG_SATA)
hpriv->map = piix_init_sata_map(pdev, port_info,
piix_map_db_table[ent->driver_data]);
rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
if (rc)
return rc;
host->private_data = hpriv;
[PATCH] ata_piix: fix MAP VALUE interpretation for for ICH6/7 Unlike their older siblings, ICH6 and 7 use different scheme for MAP VALUE. This patch makes ata_piix interpret MV properly on ICH6/7. Pre-ICH6/7 The value of these bits indicate the address range the SATA port responds to, and whether or not the SATA and IDE functions are combined. 000 = Non-combined. P0 is primary master. P1 is secondary master. 001 = Non-combined. P0 is secondary master. P1 is primary master. 100 = Combined. P0 is primary master. P1 is primary slave. P-ATA is 2:0 Map Value secondary. 101 = Combined. P0 is primary slave. P1 is primary master. P-ATA is secondary. 110 = Combined. P-ATA is primary. P0 is secondary master. P1 is secondary slave. 111 = Combined. P-ATA is primary. P0 is secondary slave. P1 is secondary master. ICH6/7 Map Value - R/W. Map Value (MV): The value in the bits below indicate the address range the SATA ports responds to, and whether or not the PATA and SATA functions are combined. When in combined mode, the AHCI memory space is not available and AHCI may not be used. 00 = Non-combined. P0 is primary master, P2 is the primary slave. P1 is secondary master, P3 is the 1:0 secondary slave (desktop only). P0 is primary master, P2 is the primary slave (mobile only). 01 = Combined. IDE is primary. P1 is secondary master, P3 is the secondary slave. (desktop only) 10 = Combined. P0 is primary master. P2 is primary slave. IDE is secondary 11 = Reserved Signed-off-by: Tejun Heo <htejun@gmail.com> -- Jeff, without this patch, ata_piix misdetects my ICH7's combined mode, ending up not applying bridge limits to PX-710SA and configuring IDE drive on 40-c cable to UDMA/66. Thanks. Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-18 16:17:07 +08:00
/* initialize controller */
if (port_flags & ATA_FLAG_SATA) {
piix_init_pcs(host, piix_map_db_table[ent->driver_data]);
rc = piix_init_sidpr(host);
if (rc)
return rc;
if (host->ports[0]->ops == &piix_sidpr_sata_ops)
sht = &piix_sidpr_sht;
}
/* apply IOCFG bit18 quirk */
piix_iocfg_bit18_quirk(host);
/* On ICH5, some BIOSen disable the interrupt using the
* PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3.
* On ICH6, this bit has the same effect, but only when
* MSI is disabled (and it is disabled, as we don't use
* message-signalled interrupts currently).
*/
if (port_flags & PIIX_FLAG_CHECKINTR)
pci_intx(pdev, 1);
if (piix_check_450nx_errata(pdev)) {
/* This writes into the master table but it does not
really matter for this errata as we will apply it to
all the PIIX devices on the board */
host->ports[0]->mwdma_mask = 0;
host->ports[0]->udma_mask = 0;
host->ports[1]->mwdma_mask = 0;
host->ports[1]->udma_mask = 0;
}
host->flags |= ATA_HOST_PARALLEL_SCAN;
/* Allow hosts to specify device types to ignore when scanning. */
piix_ignore_devices_quirk(host);
pci_set_master(pdev);
return ata_pci_sff_activate_host(host, ata_bmdma_interrupt, sht);
}
static void piix_remove_one(struct pci_dev *pdev)
{
struct ata_host *host = dev_get_drvdata(&pdev->dev);
struct piix_host_priv *hpriv = host->private_data;
pci_write_config_dword(pdev, PIIX_IOCFG, hpriv->saved_iocfg);
ata_pci_remove_one(pdev);
}
static struct pci_driver piix_pci_driver = {
.name = DRV_NAME,
.id_table = piix_pci_tbl,
.probe = piix_init_one,
.remove = piix_remove_one,
#ifdef CONFIG_PM
.suspend = piix_pci_device_suspend,
.resume = piix_pci_device_resume,
#endif
};
static int __init piix_init(void)
{
int rc;
DPRINTK("pci_register_driver\n");
rc = pci_register_driver(&piix_pci_driver);
if (rc)
return rc;
in_module_init = 0;
DPRINTK("done\n");
return 0;
}
static void __exit piix_exit(void)
{
pci_unregister_driver(&piix_pci_driver);
}
module_init(piix_init);
module_exit(piix_exit);