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Date: Sat, 30 Jan 2010 20:49:44 +0100
From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To: linux-ide@...r.kernel.org
Cc: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
linux-kernel@...r.kernel.org
Subject: [PATCH 4/9] [ata_]piix: move documentation to ata_piix.h
From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Subject: [PATCH] [ata_]piix: move documentation to ata_piix.h
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
drivers/ata/ata_piix.c | 45 ---------------------------------------------
drivers/ata/ata_piix.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++
drivers/ide/piix.c | 37 -------------------------------------
3 files changed, 46 insertions(+), 82 deletions(-)
Index: b/drivers/ata/ata_piix.c
===================================================================
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -36,51 +36,6 @@
* as Documentation/DocBook/libata.*
*
* Hardware documentation available at http://developer.intel.com/
- *
- * Documentation
- * Publically available from Intel web site. Errata documentation
- * is also publically 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 orginal Triton
- * series chipsets do _not_ support independant 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 independant 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>
Index: b/drivers/ata/ata_piix.h
===================================================================
--- a/drivers/ata/ata_piix.h
+++ b/drivers/ata/ata_piix.h
@@ -1,3 +1,49 @@
+/*
+ * Documentation:
+ * Publically available from Intel web site. Errata documentation
+ * is also publically 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 orginal Triton
+ * series chipsets do _not_ support independant 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 independant 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
+ */
struct ich_laptop {
u16 device;
Index: b/drivers/ide/piix.c
===================================================================
--- a/drivers/ide/piix.c
+++ b/drivers/ide/piix.c
@@ -5,43 +5,6 @@
* Copyright (C) 2006-2007 MontaVista Software, Inc. <source@...sta.com>
*
* May be copied or modified under the terms of the GNU General Public License
- *
- * Documentation:
- *
- * Publically available from Intel web site. Errata documentation
- * is also publically 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.
- *
- * 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
- *
- * 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/types.h>
--
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