cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
/*
|
2005-04-16 15:20:36 -07:00
|
|
|
* cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines.
|
|
|
|
|
* Due to massive hardware bugs, UltraDMA is only supported
|
|
|
|
|
* on the 646U2 and not on the 646U.
|
|
|
|
|
*
|
|
|
|
|
* Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
|
|
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|
* Copyright (C) 1998 David S. Miller (davem@redhat.com)
|
|
|
|
|
*
|
|
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|
|
* Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
|
2010-01-18 00:18:26 -07:00
|
|
|
* Copyright (C) 2007-2010 Bartlomiej Zolnierkiewicz
|
2009-06-15 09:52:56 -07:00
|
|
|
* Copyright (C) 2007,2009 MontaVista Software, Inc. <source@mvista.com>
|
2005-04-16 15:20:36 -07:00
|
|
|
*/
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|
|
#include <linux/module.h>
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|
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#include <linux/types.h>
|
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|
|
#include <linux/pci.h>
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|
|
#include <linux/ide.h>
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#include <linux/init.h>
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#include <asm/io.h>
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|
|
2008-07-24 13:53:32 -07:00
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#define DRV_NAME "cmd64x"
|
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|
2005-04-16 15:20:36 -07:00
|
|
|
/*
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|
|
* CMD64x specific registers definition.
|
|
|
|
|
*/
|
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#define CFR 0x50
|
2007-05-05 13:03:49 -07:00
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#define CFR_INTR_CH0 0x04
|
2005-04-16 15:20:36 -07:00
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#define CMDTIM 0x52
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#define ARTTIM0 0x53
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#define DRWTIM0 0x54
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#define ARTTIM1 0x55
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#define DRWTIM1 0x56
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#define ARTTIM23 0x57
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#define ARTTIM23_DIS_RA2 0x04
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#define ARTTIM23_DIS_RA3 0x08
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#define ARTTIM23_INTR_CH1 0x10
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#define DRWTIM2 0x58
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#define BRST 0x59
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#define DRWTIM3 0x5b
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#define BMIDECR0 0x70
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#define MRDMODE 0x71
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#define MRDMODE_INTR_CH0 0x04
|
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|
|
#define MRDMODE_INTR_CH1 0x08
|
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|
#define UDIDETCR0 0x73
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|
#define DTPR0 0x74
|
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|
|
#define BMIDECR1 0x78
|
|
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|
|
#define BMIDECSR 0x79
|
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|
#define UDIDETCR1 0x7B
|
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|
#define DTPR1 0x7C
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|
|
2010-01-18 00:18:26 -07:00
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|
|
static void cmd64x_program_timings(ide_drive_t *drive, u8 mode)
|
2005-04-16 15:20:36 -07:00
|
|
|
{
|
2010-01-18 00:18:26 -07:00
|
|
|
ide_hwif_t *hwif = drive->hwif;
|
2008-04-27 06:38:29 -07:00
|
|
|
struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
|
2010-01-18 00:18:26 -07:00
|
|
|
int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
|
|
|
|
|
const unsigned long T = 1000000 / bus_speed;
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
static const u8 recovery_values[] =
|
2005-04-16 15:20:36 -07:00
|
|
|
{15, 15, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0};
|
2010-01-18 00:18:26 -07:00
|
|
|
static const u8 setup_values[] = {0x40, 0x40, 0x40, 0x80, 0, 0xc0};
|
|
|
|
|
static const u8 arttim_regs[4] = {ARTTIM0, ARTTIM1, ARTTIM23, ARTTIM23};
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
static const u8 drwtim_regs[4] = {DRWTIM0, DRWTIM1, DRWTIM2, DRWTIM3};
|
2010-01-18 00:18:26 -07:00
|
|
|
struct ide_timing t;
|
|
|
|
|
u8 arttim = 0;
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
|
2010-01-18 00:18:26 -07:00
|
|
|
ide_timing_compute(drive, mode, &t, T, 0);
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
/*
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
* In case we've got too long recovery phase, try to lengthen
|
|
|
|
|
* the active phase
|
2005-04-16 15:20:36 -07:00
|
|
|
*/
|
2010-01-18 00:18:26 -07:00
|
|
|
if (t.recover > 16) {
|
|
|
|
|
t.active += t.recover - 16;
|
|
|
|
|
t.recover = 16;
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
2010-01-18 00:18:26 -07:00
|
|
|
if (t.active > 16) /* shouldn't actually happen... */
|
|
|
|
|
t.active = 16;
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
/*
|
|
|
|
|
* Convert values to internal chipset representation
|
|
|
|
|
*/
|
2010-01-18 00:18:26 -07:00
|
|
|
t.recover = recovery_values[t.recover];
|
|
|
|
|
t.active &= 0x0f;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
/* Program the active/recovery counts into the DRWTIM register */
|
2010-01-18 00:18:26 -07:00
|
|
|
pci_write_config_byte(dev, drwtim_regs[drive->dn],
|
|
|
|
|
(t.active << 4) | t.recover);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
/*
|
|
|
|
|
* The primary channel has individual address setup timing registers
|
|
|
|
|
* for each drive and the hardware selects the slowest timing itself.
|
|
|
|
|
* The secondary channel has one common register and we have to select
|
|
|
|
|
* the slowest address setup timing ourselves.
|
|
|
|
|
*/
|
|
|
|
|
if (hwif->channel) {
|
2009-01-06 09:20:55 -07:00
|
|
|
ide_drive_t *pair = ide_get_pair_dev(drive);
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
|
2010-01-18 00:21:41 -07:00
|
|
|
if (pair) {
|
|
|
|
|
struct ide_timing tp;
|
|
|
|
|
|
|
|
|
|
ide_timing_compute(pair, pair->pio_mode, &tp, T, 0);
|
|
|
|
|
ide_timing_merge(&t, &tp, &t, IDE_TIMING_SETUP);
|
|
|
|
|
if (pair->dma_mode) {
|
|
|
|
|
ide_timing_compute(pair, pair->dma_mode,
|
|
|
|
|
&tp, T, 0);
|
|
|
|
|
ide_timing_merge(&tp, &t, &t, IDE_TIMING_SETUP);
|
|
|
|
|
}
|
|
|
|
|
}
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
|
2010-01-18 00:18:26 -07:00
|
|
|
if (t.setup > 5) /* shouldn't actually happen... */
|
|
|
|
|
t.setup = 5;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
/*
|
|
|
|
|
* Program the address setup clocks into the ARTTIM registers.
|
|
|
|
|
* Avoid clearing the secondary channel's interrupt bit.
|
|
|
|
|
*/
|
|
|
|
|
(void) pci_read_config_byte (dev, arttim_regs[drive->dn], &arttim);
|
|
|
|
|
if (hwif->channel)
|
|
|
|
|
arttim &= ~ARTTIM23_INTR_CH1;
|
|
|
|
|
arttim &= ~0xc0;
|
2010-01-18 00:18:26 -07:00
|
|
|
arttim |= setup_values[t.setup];
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
(void) pci_write_config_byte(dev, arttim_regs[drive->dn], arttim);
|
2007-03-03 09:48:53 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Attempts to set drive's PIO mode.
|
2007-10-11 14:54:00 -07:00
|
|
|
* Special cases are 8: prefetch off, 9: prefetch on (both never worked)
|
2007-03-03 09:48:53 -07:00
|
|
|
*/
|
2007-10-11 14:54:00 -07:00
|
|
|
|
2010-01-19 02:44:41 -07:00
|
|
|
static void cmd64x_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
|
2007-03-03 09:48:53 -07:00
|
|
|
{
|
2010-01-19 02:44:41 -07:00
|
|
|
const u8 pio = drive->pio_mode - XFER_PIO_0;
|
|
|
|
|
|
2007-03-03 09:48:53 -07:00
|
|
|
/*
|
|
|
|
|
* Filter out the prefetch control values
|
|
|
|
|
* to prevent PIO5 from being programmed
|
|
|
|
|
*/
|
|
|
|
|
if (pio == 8 || pio == 9)
|
|
|
|
|
return;
|
|
|
|
|
|
2010-01-18 00:18:26 -07:00
|
|
|
cmd64x_program_timings(drive, XFER_PIO_0 + pio);
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
|
2010-01-19 02:45:29 -07:00
|
|
|
static void cmd64x_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
|
2005-04-16 15:20:36 -07:00
|
|
|
{
|
2008-02-01 15:09:31 -07:00
|
|
|
struct pci_dev *dev = to_pci_dev(hwif->dev);
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
u8 unit = drive->dn & 0x01;
|
|
|
|
|
u8 regU = 0, pciU = hwif->channel ? UDIDETCR1 : UDIDETCR0;
|
2010-01-19 02:45:29 -07:00
|
|
|
const u8 speed = drive->dma_mode;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2010-01-18 00:18:38 -07:00
|
|
|
pci_read_config_byte(dev, pciU, ®U);
|
|
|
|
|
regU &= ~(unit ? 0xCA : 0x35);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
switch(speed) {
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
case XFER_UDMA_5:
|
|
|
|
|
regU |= unit ? 0x0A : 0x05;
|
|
|
|
|
break;
|
|
|
|
|
case XFER_UDMA_4:
|
|
|
|
|
regU |= unit ? 0x4A : 0x15;
|
|
|
|
|
break;
|
|
|
|
|
case XFER_UDMA_3:
|
|
|
|
|
regU |= unit ? 0x8A : 0x25;
|
|
|
|
|
break;
|
|
|
|
|
case XFER_UDMA_2:
|
|
|
|
|
regU |= unit ? 0x42 : 0x11;
|
|
|
|
|
break;
|
|
|
|
|
case XFER_UDMA_1:
|
|
|
|
|
regU |= unit ? 0x82 : 0x21;
|
|
|
|
|
break;
|
|
|
|
|
case XFER_UDMA_0:
|
|
|
|
|
regU |= unit ? 0xC2 : 0x31;
|
|
|
|
|
break;
|
|
|
|
|
case XFER_MW_DMA_2:
|
|
|
|
|
case XFER_MW_DMA_1:
|
|
|
|
|
case XFER_MW_DMA_0:
|
2010-01-18 00:18:26 -07:00
|
|
|
cmd64x_program_timings(drive, speed);
|
cmd64x: fix multiword and remove single-word DMA support
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-05-05 13:03:49 -07:00
|
|
|
break;
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
|
2010-01-18 00:18:38 -07:00
|
|
|
pci_write_config_byte(dev, pciU, regU);
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
|
2009-06-15 09:52:56 -07:00
|
|
|
static void cmd648_clear_irq(ide_drive_t *drive)
|
2005-04-16 15:20:36 -07:00
|
|
|
{
|
2009-01-06 09:20:52 -07:00
|
|
|
ide_hwif_t *hwif = drive->hwif;
|
2009-06-15 09:52:56 -07:00
|
|
|
struct pci_dev *dev = to_pci_dev(hwif->dev);
|
|
|
|
|
unsigned long base = pci_resource_start(dev, 4);
|
2007-05-05 13:03:50 -07:00
|
|
|
u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 :
|
|
|
|
|
MRDMODE_INTR_CH0;
|
2008-01-25 14:17:05 -07:00
|
|
|
u8 mrdmode = inb(base + 1);
|
2007-05-05 13:03:50 -07:00
|
|
|
|
|
|
|
|
/* clear the interrupt bit */
|
2007-11-13 14:09:14 -07:00
|
|
|
outb((mrdmode & ~(MRDMODE_INTR_CH0 | MRDMODE_INTR_CH1)) | irq_mask,
|
2008-01-25 14:17:05 -07:00
|
|
|
base + 1);
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
|
2009-06-15 09:52:56 -07:00
|
|
|
static void cmd64x_clear_irq(ide_drive_t *drive)
|
2005-04-16 15:20:36 -07:00
|
|
|
{
|
2009-01-06 09:20:52 -07:00
|
|
|
ide_hwif_t *hwif = drive->hwif;
|
2008-02-01 15:09:31 -07:00
|
|
|
struct pci_dev *dev = to_pci_dev(hwif->dev);
|
2007-05-05 13:03:50 -07:00
|
|
|
int irq_reg = hwif->channel ? ARTTIM23 : CFR;
|
|
|
|
|
u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 :
|
|
|
|
|
CFR_INTR_CH0;
|
|
|
|
|
u8 irq_stat = 0;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2007-05-05 13:03:50 -07:00
|
|
|
(void) pci_read_config_byte(dev, irq_reg, &irq_stat);
|
|
|
|
|
/* clear the interrupt bit */
|
|
|
|
|
(void) pci_write_config_byte(dev, irq_reg, irq_stat | irq_mask);
|
|
|
|
|
}
|
|
|
|
|
|
2009-06-15 09:52:59 -07:00
|
|
|
static int cmd648_test_irq(ide_hwif_t *hwif)
|
2007-05-05 13:03:50 -07:00
|
|
|
{
|
2009-06-15 09:52:59 -07:00
|
|
|
struct pci_dev *dev = to_pci_dev(hwif->dev);
|
|
|
|
|
unsigned long base = pci_resource_start(dev, 4);
|
2007-05-05 13:03:50 -07:00
|
|
|
u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 :
|
|
|
|
|
MRDMODE_INTR_CH0;
|
2008-01-25 14:17:05 -07:00
|
|
|
u8 mrdmode = inb(base + 1);
|
2007-05-05 13:03:50 -07:00
|
|
|
|
2009-06-15 09:52:59 -07:00
|
|
|
pr_debug("%s: mrdmode: 0x%02x irq_mask: 0x%02x\n",
|
|
|
|
|
hwif->name, mrdmode, irq_mask);
|
2007-05-05 13:03:50 -07:00
|
|
|
|
2009-06-15 09:52:59 -07:00
|
|
|
return (mrdmode & irq_mask) ? 1 : 0;
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
|
2009-06-15 09:52:59 -07:00
|
|
|
static int cmd64x_test_irq(ide_hwif_t *hwif)
|
2005-04-16 15:20:36 -07:00
|
|
|
{
|
2008-02-01 15:09:31 -07:00
|
|
|
struct pci_dev *dev = to_pci_dev(hwif->dev);
|
2007-05-05 13:03:50 -07:00
|
|
|
int irq_reg = hwif->channel ? ARTTIM23 : CFR;
|
|
|
|
|
u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 :
|
|
|
|
|
CFR_INTR_CH0;
|
|
|
|
|
u8 irq_stat = 0;
|
2007-05-05 13:03:49 -07:00
|
|
|
|
|
|
|
|
(void) pci_read_config_byte(dev, irq_reg, &irq_stat);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2009-06-15 09:52:59 -07:00
|
|
|
pr_debug("%s: irq_stat: 0x%02x irq_mask: 0x%02x\n",
|
|
|
|
|
hwif->name, irq_stat, irq_mask);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2009-06-15 09:52:59 -07:00
|
|
|
return (irq_stat & irq_mask) ? 1 : 0;
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* ASUS P55T2P4D with CMD646 chipset revision 0x01 requires the old
|
|
|
|
|
* event order for DMA transfers.
|
|
|
|
|
*/
|
|
|
|
|
|
2008-04-26 13:25:24 -07:00
|
|
|
static int cmd646_1_dma_end(ide_drive_t *drive)
|
2005-04-16 15:20:36 -07:00
|
|
|
{
|
2009-01-06 09:20:52 -07:00
|
|
|
ide_hwif_t *hwif = drive->hwif;
|
2005-04-16 15:20:36 -07:00
|
|
|
u8 dma_stat = 0, dma_cmd = 0;
|
|
|
|
|
|
|
|
|
|
/* get DMA status */
|
2008-07-23 10:55:51 -07:00
|
|
|
dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS);
|
2005-04-16 15:20:36 -07:00
|
|
|
/* read DMA command state */
|
2008-07-23 10:55:51 -07:00
|
|
|
dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
|
2005-04-16 15:20:36 -07:00
|
|
|
/* stop DMA */
|
2008-07-23 10:55:51 -07:00
|
|
|
outb(dma_cmd & ~1, hwif->dma_base + ATA_DMA_CMD);
|
2005-04-16 15:20:36 -07:00
|
|
|
/* clear the INTR & ERROR bits */
|
2008-07-23 10:55:51 -07:00
|
|
|
outb(dma_stat | 6, hwif->dma_base + ATA_DMA_STATUS);
|
2005-04-16 15:20:36 -07:00
|
|
|
/* verify good DMA status */
|
|
|
|
|
return (dma_stat & 7) != 4;
|
|
|
|
|
}
|
|
|
|
|
|
2009-03-24 15:22:53 -07:00
|
|
|
static int init_chipset_cmd64x(struct pci_dev *dev)
|
2005-04-16 15:20:36 -07:00
|
|
|
{
|
|
|
|
|
u8 mrdmode = 0;
|
|
|
|
|
|
|
|
|
|
/* Set a good latency timer and cache line size value. */
|
|
|
|
|
(void) pci_write_config_byte(dev, PCI_LATENCY_TIMER, 64);
|
|
|
|
|
/* FIXME: pci_set_master() to ensure a good latency timer value */
|
|
|
|
|
|
2007-07-09 14:17:55 -07:00
|
|
|
/*
|
|
|
|
|
* Enable interrupts, select MEMORY READ LINE for reads.
|
|
|
|
|
*
|
|
|
|
|
* NOTE: although not mentioned in the PCI0646U specs,
|
|
|
|
|
* bits 0-1 are write only and won't be read back as
|
|
|
|
|
* set or not -- PCI0646U2 specs clarify this point.
|
2005-04-16 15:20:36 -07:00
|
|
|
*/
|
2007-07-09 14:17:55 -07:00
|
|
|
(void) pci_read_config_byte (dev, MRDMODE, &mrdmode);
|
|
|
|
|
mrdmode &= ~0x30;
|
|
|
|
|
(void) pci_write_config_byte(dev, MRDMODE, (mrdmode | 0x02));
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2008-08-05 09:17:04 -07:00
|
|
|
static u8 cmd64x_cable_detect(ide_hwif_t *hwif)
|
2005-04-16 15:20:36 -07:00
|
|
|
{
|
2008-02-01 15:09:31 -07:00
|
|
|
struct pci_dev *dev = to_pci_dev(hwif->dev);
|
2007-07-09 14:17:55 -07:00
|
|
|
u8 bmidecsr = 0, mask = hwif->channel ? 0x02 : 0x01;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2007-07-09 14:17:55 -07:00
|
|
|
switch (dev->device) {
|
|
|
|
|
case PCI_DEVICE_ID_CMD_648:
|
|
|
|
|
case PCI_DEVICE_ID_CMD_649:
|
|
|
|
|
pci_read_config_byte(dev, BMIDECSR, &bmidecsr);
|
2007-07-09 14:17:58 -07:00
|
|
|
return (bmidecsr & mask) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
|
2007-07-09 14:17:55 -07:00
|
|
|
default:
|
2007-07-09 14:17:58 -07:00
|
|
|
return ATA_CBL_PATA40;
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2008-04-26 13:25:14 -07:00
|
|
|
static const struct ide_port_ops cmd64x_port_ops = {
|
|
|
|
|
.set_pio_mode = cmd64x_set_pio_mode,
|
|
|
|
|
.set_dma_mode = cmd64x_set_dma_mode,
|
2009-06-15 09:52:56 -07:00
|
|
|
.clear_irq = cmd64x_clear_irq,
|
2009-06-15 09:52:59 -07:00
|
|
|
.test_irq = cmd64x_test_irq,
|
2009-06-15 09:52:56 -07:00
|
|
|
.cable_detect = cmd64x_cable_detect,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static const struct ide_port_ops cmd648_port_ops = {
|
|
|
|
|
.set_pio_mode = cmd64x_set_pio_mode,
|
|
|
|
|
.set_dma_mode = cmd64x_set_dma_mode,
|
|
|
|
|
.clear_irq = cmd648_clear_irq,
|
2009-06-15 09:52:59 -07:00
|
|
|
.test_irq = cmd648_test_irq,
|
2008-04-26 13:25:14 -07:00
|
|
|
.cable_detect = cmd64x_cable_detect,
|
|
|
|
|
};
|
|
|
|
|
|
2008-04-26 13:25:24 -07:00
|
|
|
static const struct ide_dma_ops cmd646_rev1_dma_ops = {
|
|
|
|
|
.dma_host_set = ide_dma_host_set,
|
|
|
|
|
.dma_setup = ide_dma_setup,
|
|
|
|
|
.dma_start = ide_dma_start,
|
2008-04-26 13:25:24 -07:00
|
|
|
.dma_end = cmd646_1_dma_end,
|
2008-04-26 13:25:24 -07:00
|
|
|
.dma_test_irq = ide_dma_test_irq,
|
|
|
|
|
.dma_lost_irq = ide_dma_lost_irq,
|
2009-03-27 04:46:47 -07:00
|
|
|
.dma_timer_expiry = ide_dma_sff_timer_expiry,
|
2009-01-06 09:21:02 -07:00
|
|
|
.dma_sff_read_status = ide_dma_sff_read_status,
|
2008-04-26 13:25:24 -07:00
|
|
|
};
|
|
|
|
|
|
2007-10-19 15:32:34 -07:00
|
|
|
static const struct ide_port_info cmd64x_chipsets[] __devinitdata = {
|
2008-07-24 13:53:32 -07:00
|
|
|
{ /* 0: CMD643 */
|
|
|
|
|
.name = DRV_NAME,
|
2005-04-16 15:20:36 -07:00
|
|
|
.init_chipset = init_chipset_cmd64x,
|
2007-05-05 13:03:49 -07:00
|
|
|
.enablebits = {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
|
2008-04-26 13:25:14 -07:00
|
|
|
.port_ops = &cmd64x_port_ops,
|
2008-02-01 15:09:30 -07:00
|
|
|
.host_flags = IDE_HFLAG_CLEAR_SIMPLEX |
|
2009-10-21 01:55:28 -07:00
|
|
|
IDE_HFLAG_ABUSE_PREFETCH |
|
|
|
|
|
IDE_HFLAG_SERIALIZE,
|
2007-07-19 16:11:59 -07:00
|
|
|
.pio_mask = ATA_PIO5,
|
2007-10-18 15:30:07 -07:00
|
|
|
.mwdma_mask = ATA_MWDMA2,
|
2007-05-09 15:01:07 -07:00
|
|
|
.udma_mask = 0x00, /* no udma */
|
2008-07-24 13:53:32 -07:00
|
|
|
},
|
|
|
|
|
{ /* 1: CMD646 */
|
|
|
|
|
.name = DRV_NAME,
|
2005-04-16 15:20:36 -07:00
|
|
|
.init_chipset = init_chipset_cmd64x,
|
2007-05-05 13:03:49 -07:00
|
|
|
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
|
2009-06-15 09:52:56 -07:00
|
|
|
.port_ops = &cmd648_port_ops,
|
2009-10-21 01:55:28 -07:00
|
|
|
.host_flags = IDE_HFLAG_ABUSE_PREFETCH |
|
|
|
|
|
IDE_HFLAG_SERIALIZE,
|
2007-07-19 16:11:59 -07:00
|
|
|
.pio_mask = ATA_PIO5,
|
2007-10-18 15:30:07 -07:00
|
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
|
|
|
.udma_mask = ATA_UDMA2,
|
2008-07-24 13:53:32 -07:00
|
|
|
},
|
|
|
|
|
{ /* 2: CMD648 */
|
|
|
|
|
.name = DRV_NAME,
|
2005-04-16 15:20:36 -07:00
|
|
|
.init_chipset = init_chipset_cmd64x,
|
2007-05-05 13:03:49 -07:00
|
|
|
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
|
2009-06-15 09:52:56 -07:00
|
|
|
.port_ops = &cmd648_port_ops,
|
2008-04-26 08:36:35 -07:00
|
|
|
.host_flags = IDE_HFLAG_ABUSE_PREFETCH,
|
2007-07-19 16:11:59 -07:00
|
|
|
.pio_mask = ATA_PIO5,
|
2007-10-18 15:30:07 -07:00
|
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
|
|
|
.udma_mask = ATA_UDMA4,
|
2008-07-24 13:53:32 -07:00
|
|
|
},
|
|
|
|
|
{ /* 3: CMD649 */
|
|
|
|
|
.name = DRV_NAME,
|
2005-04-16 15:20:36 -07:00
|
|
|
.init_chipset = init_chipset_cmd64x,
|
2007-05-05 13:03:49 -07:00
|
|
|
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
|
2009-06-15 09:52:56 -07:00
|
|
|
.port_ops = &cmd648_port_ops,
|
2008-04-26 08:36:35 -07:00
|
|
|
.host_flags = IDE_HFLAG_ABUSE_PREFETCH,
|
2007-07-19 16:11:59 -07:00
|
|
|
.pio_mask = ATA_PIO5,
|
2007-10-18 15:30:07 -07:00
|
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
|
|
|
.udma_mask = ATA_UDMA5,
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static int __devinit cmd64x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
|
|
|
|
|
{
|
2007-10-19 15:32:34 -07:00
|
|
|
struct ide_port_info d;
|
2007-10-18 15:30:09 -07:00
|
|
|
u8 idx = id->driver_data;
|
|
|
|
|
|
|
|
|
|
d = cmd64x_chipsets[idx];
|
|
|
|
|
|
2008-04-26 13:25:24 -07:00
|
|
|
if (idx == 1) {
|
|
|
|
|
/*
|
|
|
|
|
* UltraDMA only supported on PCI646U and PCI646U2, which
|
|
|
|
|
* correspond to revisions 0x03, 0x05 and 0x07 respectively.
|
|
|
|
|
* Actually, although the CMD tech support people won't
|
|
|
|
|
* tell me the details, the 0x03 revision cannot support
|
|
|
|
|
* UDMA correctly without hardware modifications, and even
|
|
|
|
|
* then it only works with Quantum disks due to some
|
|
|
|
|
* hold time assumptions in the 646U part which are fixed
|
|
|
|
|
* in the 646U2.
|
|
|
|
|
*
|
|
|
|
|
* So we only do UltraDMA on revision 0x05 and 0x07 chipsets.
|
|
|
|
|
*/
|
|
|
|
|
if (dev->revision < 5) {
|
|
|
|
|
d.udma_mask = 0x00;
|
|
|
|
|
/*
|
|
|
|
|
* The original PCI0646 didn't have the primary
|
|
|
|
|
* channel enable bit, it appeared starting with
|
|
|
|
|
* PCI0646U (i.e. revision ID 3).
|
|
|
|
|
*/
|
|
|
|
|
if (dev->revision < 3) {
|
|
|
|
|
d.enablebits[0].reg = 0;
|
2009-06-15 09:52:56 -07:00
|
|
|
d.port_ops = &cmd64x_port_ops;
|
2008-04-26 13:25:24 -07:00
|
|
|
if (dev->revision == 1)
|
|
|
|
|
d.dma_ops = &cmd646_rev1_dma_ops;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
2007-05-05 13:03:49 -07:00
|
|
|
|
2008-07-24 13:53:14 -07:00
|
|
|
return ide_pci_init_one(dev, &d, NULL);
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
|
2007-10-16 13:29:56 -07:00
|
|
|
static const struct pci_device_id cmd64x_pci_tbl[] = {
|
|
|
|
|
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_643), 0 },
|
|
|
|
|
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_646), 1 },
|
|
|
|
|
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_648), 2 },
|
|
|
|
|
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_649), 3 },
|
2005-04-16 15:20:36 -07:00
|
|
|
{ 0, },
|
|
|
|
|
};
|
|
|
|
|
MODULE_DEVICE_TABLE(pci, cmd64x_pci_tbl);
|
|
|
|
|
|
2008-10-13 12:39:41 -07:00
|
|
|
static struct pci_driver cmd64x_pci_driver = {
|
2005-04-16 15:20:36 -07:00
|
|
|
.name = "CMD64x_IDE",
|
|
|
|
|
.id_table = cmd64x_pci_tbl,
|
|
|
|
|
.probe = cmd64x_init_one,
|
2008-07-24 13:53:20 -07:00
|
|
|
.remove = ide_pci_remove,
|
2008-10-10 13:39:32 -07:00
|
|
|
.suspend = ide_pci_suspend,
|
|
|
|
|
.resume = ide_pci_resume,
|
2005-04-16 15:20:36 -07:00
|
|
|
};
|
|
|
|
|
|
2007-01-27 05:46:56 -07:00
|
|
|
static int __init cmd64x_ide_init(void)
|
2005-04-16 15:20:36 -07:00
|
|
|
{
|
2008-10-13 12:39:41 -07:00
|
|
|
return ide_pci_register_driver(&cmd64x_pci_driver);
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
|
2008-07-24 13:53:20 -07:00
|
|
|
static void __exit cmd64x_ide_exit(void)
|
|
|
|
|
{
|
2008-10-13 12:39:41 -07:00
|
|
|
pci_unregister_driver(&cmd64x_pci_driver);
|
2008-07-24 13:53:20 -07:00
|
|
|
}
|
|
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
module_init(cmd64x_ide_init);
|
2008-07-24 13:53:20 -07:00
|
|
|
module_exit(cmd64x_ide_exit);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2010-01-18 00:18:26 -07:00
|
|
|
MODULE_AUTHOR("Eddie Dost, David Miller, Andre Hedrick, Bartlomiej Zolnierkiewicz");
|
2005-04-16 15:20:36 -07:00
|
|
|
MODULE_DESCRIPTION("PCI driver module for CMD64x IDE");
|
|
|
|
|
MODULE_LICENSE("GPL");
|