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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-05-10 02:01:08 +0400 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-05-10 02:01:08 +0400 |
| commit | 2d5eaa6dd744a641e75503232a01f52d0768884c (patch) | |
| tree | 0736bd00ea3bd032d601d0a676c998cb043b877a /drivers/ide/pci/tc86c001.c | |
| parent | 18137207236285989dfc0ee7f929b954199228f3 (diff) | |
| download | linux-2d5eaa6dd744a641e75503232a01f52d0768884c.tar.xz | |
ide: rework the code for selecting the best DMA transfer mode (v3)
Depends on the "ide: fix UDMA/MWDMA/SWDMA masks" patch.
* add ide_hwif_t.udma_filter hook for filtering UDMA mask
(use it in alim15x3, hpt366, siimage and serverworks drivers)
* add ide_max_dma_mode() for finding best DMA mode for the device
(loosely based on some older libata-core.c code)
* convert ide_dma_speed() users to use ide_max_dma_mode()
* make ide_rate_filter() take "ide_drive_t *drive" as an argument instead
of "u8 mode" and teach it to how to use UDMA mask to do filtering
* use ide_rate_filter() in hpt366 driver
* remove no longer needed ide_dma_speed() and *_ratemask()
* unexport eighty_ninty_three()
v2:
* rename ->filter_udma_mask to ->udma_filter
[ Suggested by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]
v3:
* updated for scc_pata driver (fixes XFER_UDMA_6 filtering for user-space
originated transfer mode change requests when 100MHz clock is used)
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/tc86c001.c')
| -rw-r--r-- | drivers/ide/pci/tc86c001.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/pci/tc86c001.c index 0b6d81d6ce48..168f035caa3f 100644 --- a/drivers/ide/pci/tc86c001.c +++ b/drivers/ide/pci/tc86c001.c @@ -13,18 +13,13 @@ #include <linux/pci.h> #include <linux/ide.h> -static inline u8 tc86c001_ratemask(ide_drive_t *drive) -{ - return eighty_ninty_three(drive) ? 2 : 1; -} - static int tc86c001_tune_chipset(ide_drive_t *drive, u8 speed) { ide_hwif_t *hwif = HWIF(drive); unsigned long scr_port = hwif->config_data + (drive->dn ? 0x02 : 0x00); u16 mode, scr = hwif->INW(scr_port); - speed = ide_rate_filter(tc86c001_ratemask(drive), speed); + speed = ide_rate_filter(drive, speed); switch (speed) { case XFER_UDMA_4: mode = 0x00c0; break; @@ -174,7 +169,7 @@ static int tc86c001_busproc(ide_drive_t *drive, int state) static int config_chipset_for_dma(ide_drive_t *drive) { - u8 speed = ide_dma_speed(drive, tc86c001_ratemask(drive)); + u8 speed = ide_max_dma_mode(drive); if (!speed) return 0; |