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    SubjectRe: [PATCH][IDE] small cleanup for AMD/nVidia IDE driver
    On Fri, Oct 03, 2003 at 08:34:01PM +0200, Bartlomiej Zolnierkiewicz wrote:
    >
    > Almost identical to VIA's patch.

    Both look fine. I'll be sending you an update for AMD-8111 @UDMA133 and
    for nForce3 soon, too.

    >
    > --bartlomiej
    >
    > [IDE] small cleanup for AMD/nVidia IDE driver
    >
    > ide_pci_setup_ports() from setup-pci.c checks if port is disabled, if so
    > d->init_setup_dma() and d->init_hwif() won't be called. There is no need
    > to check it once again inside init_hwif_amd74xx(), init_dma_amd74xx()
    > and amd74xx_tune_drive() (hwif->tuneproc will be NULL for disabled port).
    > Therefore remove amd_enabled variable and now unnecessary init_dma_amd74xx().
    > Also do not set .init_{iops, dma} to NULL in amd74xx.h (amd74xx_chipsets[]
    > is declared static). Bump driver's version number to reflect changes.
    >
    > drivers/ide/pci/amd74xx.c | 25 ++++---------------------
    > drivers/ide/pci/amd74xx.h | 15 ---------------
    > 2 files changed, 4 insertions(+), 36 deletions(-)
    >
    > diff -puN drivers/ide/pci/amd74xx.c~ide-amd-enabled-cleanup drivers/ide/pci/amd74xx.c
    > --- linux-2.6.0-test6-bk2/drivers/ide/pci/amd74xx.c~ide-amd-enabled-cleanup 2003-10-03 20:22:25.372286072 +0200
    > +++ linux-2.6.0-test6-bk2-root/drivers/ide/pci/amd74xx.c 2003-10-03 20:22:41.094895872 +0200
    > @@ -1,5 +1,5 @@
    > /*
    > - * Version 2.9
    > + * Version 2.11
    > *
    > * AMD 755/756/766/8111 and nVidia nForce IDE driver for Linux.
    > *
    > @@ -65,7 +65,6 @@ static struct amd_ide_chip {
    > };
    >
    > static struct amd_ide_chip *amd_config;
    > -static unsigned char amd_enabled;
    > static unsigned int amd_80w;
    > static unsigned int amd_clock;
    >
    > @@ -103,7 +102,7 @@ static int amd74xx_get_info(char *buffer
    >
    > amd_print("----------AMD BusMastering IDE Configuration----------------");
    >
    > - amd_print("Driver Version: 2.9");
    > + amd_print("Driver Version: 2.11");
    > amd_print("South Bridge: %s", pci_name(bmide_dev));
    >
    > pci_read_config_byte(dev, PCI_REVISION_ID, &t);
    > @@ -250,9 +249,6 @@ static int amd_set_drive(ide_drive_t *dr
    >
    > static void amd74xx_tune_drive(ide_drive_t *drive, u8 pio)
    > {
    > - if (!((amd_enabled >> HWIF(drive)->channel) & 1))
    > - return;
    > -
    > if (pio == 255) {
    > amd_set_drive(drive, ide_find_best_mode(drive, XFER_PIO | XFER_EPIO));
    > return;
    > @@ -330,9 +326,6 @@ static unsigned int __init init_chipset_
    > break;
    > }
    >
    > - pci_read_config_dword(dev, AMD_IDE_ENABLE, &u);
    > - amd_enabled = ((u & 1) ? 2 : 0) | ((u & 2) ? 1 : 0);
    > -
    > /*
    > * Take care of prefetch & postwrite.
    > */
    > @@ -408,8 +401,8 @@ static void __init init_hwif_amd74xx(ide
    > hwif->mwdma_mask = 0x07;
    > hwif->swdma_mask = 0x07;
    >
    > - if (!(hwif->udma_four))
    > - hwif->udma_four = ((amd_enabled & amd_80w) >> hwif->channel) & 1;
    > + if (!hwif->udma_four)
    > + hwif->udma_four = (amd_80w >> hwif->channel) & 1;
    > hwif->ide_dma_check = &amd74xx_ide_dma_check;
    > if (!noautodma)
    > hwif->autodma = 1;
    > @@ -417,16 +410,6 @@ static void __init init_hwif_amd74xx(ide
    > hwif->drives[1].autodma = hwif->autodma;
    > }
    >
    > -/*
    > - * We allow the BM-DMA driver only work on enabled interfaces.
    > - */
    > -
    > -static void __init init_dma_amd74xx(ide_hwif_t *hwif, unsigned long dmabase)
    > -{
    > - if ((amd_enabled >> hwif->channel) & 1)
    > - ide_setup_dma(hwif, dmabase, 8);
    > -}
    > -
    > extern void ide_setup_pci_device(struct pci_dev *, ide_pci_device_t *);
    >
    > static int __devinit amd74xx_probe(struct pci_dev *dev, const struct pci_device_id *id)
    > diff -puN drivers/ide/pci/amd74xx.h~ide-amd-enabled-cleanup drivers/ide/pci/amd74xx.h
    > --- linux-2.6.0-test6-bk2/drivers/ide/pci/amd74xx.h~ide-amd-enabled-cleanup 2003-10-03 20:22:25.375285616 +0200
    > +++ linux-2.6.0-test6-bk2-root/drivers/ide/pci/amd74xx.h 2003-10-03 20:22:25.379285008 +0200
    > @@ -27,7 +27,6 @@ static ide_pci_host_proc_t amd74xx_procs
    >
    > static unsigned int init_chipset_amd74xx(struct pci_dev *, const char *);
    > static void init_hwif_amd74xx(ide_hwif_t *);
    > -static void init_dma_amd74xx(ide_hwif_t *, unsigned long);
    >
    > static ide_pci_device_t amd74xx_chipsets[] __devinitdata = {
    > { /* 0 */
    > @@ -35,9 +34,7 @@ static ide_pci_device_t amd74xx_chipsets
    > .device = PCI_DEVICE_ID_AMD_COBRA_7401,
    > .name = "AMD7401",
    > .init_chipset = init_chipset_amd74xx,
    > - .init_iops = NULL,
    > .init_hwif = init_hwif_amd74xx,
    > - .init_dma = init_dma_amd74xx,
    > .channels = 2,
    > .autodma = AUTODMA,
    > .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
    > @@ -48,9 +45,7 @@ static ide_pci_device_t amd74xx_chipsets
    > .device = PCI_DEVICE_ID_AMD_VIPER_7409,
    > .name = "AMD7409",
    > .init_chipset = init_chipset_amd74xx,
    > - .init_iops = NULL,
    > .init_hwif = init_hwif_amd74xx,
    > - .init_dma = init_dma_amd74xx,
    > .channels = 2,
    > .autodma = AUTODMA,
    > .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
    > @@ -61,9 +56,7 @@ static ide_pci_device_t amd74xx_chipsets
    > .device = PCI_DEVICE_ID_AMD_VIPER_7411,
    > .name = "AMD7411",
    > .init_chipset = init_chipset_amd74xx,
    > - .init_iops = NULL,
    > .init_hwif = init_hwif_amd74xx,
    > - .init_dma = init_dma_amd74xx,
    > .channels = 2,
    > .autodma = AUTODMA,
    > .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
    > @@ -74,9 +67,7 @@ static ide_pci_device_t amd74xx_chipsets
    > .device = PCI_DEVICE_ID_AMD_OPUS_7441,
    > .name = "AMD7441",
    > .init_chipset = init_chipset_amd74xx,
    > - .init_iops = NULL,
    > .init_hwif = init_hwif_amd74xx,
    > - .init_dma = init_dma_amd74xx,
    > .channels = 2,
    > .autodma = AUTODMA,
    > .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
    > @@ -87,9 +78,7 @@ static ide_pci_device_t amd74xx_chipsets
    > .device = PCI_DEVICE_ID_AMD_8111_IDE,
    > .name = "AMD8111",
    > .init_chipset = init_chipset_amd74xx,
    > - .init_iops = NULL,
    > .init_hwif = init_hwif_amd74xx,
    > - .init_dma = init_dma_amd74xx,
    > .autodma = AUTODMA,
    > .channels = 2,
    > .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
    > @@ -101,9 +90,7 @@ static ide_pci_device_t amd74xx_chipsets
    > .device = PCI_DEVICE_ID_NVIDIA_NFORCE_IDE,
    > .name = "NFORCE",
    > .init_chipset = init_chipset_amd74xx,
    > - .init_iops = NULL,
    > .init_hwif = init_hwif_amd74xx,
    > - .init_dma = init_dma_amd74xx,
    > .channels = 2,
    > .autodma = AUTODMA,
    > .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}},
    > @@ -115,9 +102,7 @@ static ide_pci_device_t amd74xx_chipsets
    > .device = PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE,
    > .name = "NFORCE2",
    > .init_chipset = init_chipset_amd74xx,
    > - .init_iops = NULL,
    > .init_hwif = init_hwif_amd74xx,
    > - .init_dma = init_dma_amd74xx,
    > .channels = 2,
    > .autodma = AUTODMA,
    > .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}},
    >
    > _
    >

    --
    Vojtech Pavlik
    SuSE Labs, SuSE CR
    -
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