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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-01-25 16:17:18 -0500
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-01-25 16:17:18 -0500
commit4db90a145292327b95b03f6dcd3352327235cc36 (patch)
treec48ba5fc31e27d6fbdb8883151bdf237e7eb1920 /drivers/ide/pci/it8213.c
parent428c6440ef933a3d9df5adfeb2cbb3ea7ebb6a68 (diff)
ide: add IDE_HFLAG_ABUSE_SET_DMA_MODE host flag
* Add IDE_HFLAG_ABUSE_SET_DMA_MODE host flag and use it to decide what to do with transfer modes < XFER_PIO_0 in ide_set_xfer_rate(). * Set IDE_HFLAG_ABUSE_SET_DMA_MODE in host drivers that need it (aec62xx, amd74xx, cs5520, cs5535, hpt34x, hpt366, pdc202xx_old, serverworks, tc86c001 and via82cxxx) and cleanup ->set_dma_mode methods in host drivers that don't (IDE core code guarantees that ->set_dma_mode will be called only for modes which are present in SWDMA/MWDMA/UDMA masks). While at it: * Add IDE_HFLAGS_HPT34X/HPT3XX/PDC202XX/SVWKS define in hpt34x/hpt366/pdc202xx_old/serverworks host driver. There should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/it8213.c')
-rw-r--r--drivers/ide/pci/it8213.c21
1 files changed, 4 insertions, 17 deletions
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index 90b52ed37bfc..2a0f45c4f4c4 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -101,24 +101,11 @@ static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
101 pci_read_config_byte(dev, 0x54, &reg54); 101 pci_read_config_byte(dev, 0x54, &reg54);
102 pci_read_config_byte(dev, 0x55, &reg55); 102 pci_read_config_byte(dev, 0x55, &reg55);
103 103
104 switch(speed) {
105 case XFER_UDMA_6:
106 case XFER_UDMA_4:
107 case XFER_UDMA_2: u_speed = 2 << (drive->dn * 4); break;
108 case XFER_UDMA_5:
109 case XFER_UDMA_3:
110 case XFER_UDMA_1: u_speed = 1 << (drive->dn * 4); break;
111 case XFER_UDMA_0: u_speed = 0 << (drive->dn * 4); break;
112 break;
113 case XFER_MW_DMA_2:
114 case XFER_MW_DMA_1:
115 case XFER_SW_DMA_2:
116 break;
117 default:
118 return;
119 }
120
121 if (speed >= XFER_UDMA_0) { 104 if (speed >= XFER_UDMA_0) {
105 u8 udma = speed - XFER_UDMA_0;
106
107 u_speed = min_t(u8, 2 - (udma & 1), udma) << (drive->dn * 4);
108
122 if (!(reg48 & u_flag)) 109 if (!(reg48 & u_flag))
123 pci_write_config_byte(dev, 0x48, reg48 | u_flag); 110 pci_write_config_byte(dev, 0x48, reg48 | u_flag);
124 if (speed >= XFER_UDMA_5) { 111 if (speed >= XFER_UDMA_5) {