From b123f56e04c7c112f754f948198d1ea5a80e649d Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Sat, 26 Apr 2008 22:25:22 +0200 Subject: ide: do complete DMA setup in ->init_dma method (take 2) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * Make ide_hwif_setup_dma() return an error value. * Pass 'const struct ide_port_info *d' instead of 'unsigned long dmabase' to ->init_dma method and make it return an error value. * Rename ide_get_or_set_dma_base() to ide_pci_dma_base(), change ordering of its arguments and then export it. * Export ide_pci_set_master(). * Do complete DMA setup inside ->init_dma method and update ->init_dma users accordingly. * Sanitize code for DMA setup in ide_init_port(). v2: * Fix for CONFIG_BLK_DEV_IDEDMA_PCI=n configs (from Jiri Slaby ): Fix following compiler warning by returning EINVAL: In file included from ANYTHING-INCLUDING-IDE.H:45: include/linux/ide.h: In function ‘ide_hwif_setup_dma’: include/linux/ide.h:1022: warning: no return statement in function returning non-void Cc: Jiri Slaby Cc: Andrew Morton Acked-by: Sergei Shtylyov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-probe.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) (limited to 'drivers/ide/ide-probe.c') diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index d2faef17e548..e0316869eb6f 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -1356,9 +1356,6 @@ static void ide_init_port(ide_hwif_t *hwif, unsigned int port, if (d->init_iops) d->init_iops(hwif); - if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) - ide_hwif_setup_dma(hwif, d); - if ((!hwif->irq && (d->host_flags & IDE_HFLAG_LEGACY_IRQS)) || (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS)) hwif->irq = port ? 15 : 14; @@ -1377,9 +1374,21 @@ static void ide_init_port(ide_hwif_t *hwif, unsigned int port, hwif->mwdma_mask = d->mwdma_mask; hwif->ultra_mask = d->udma_mask; - /* reset DMA masks only for SFF-style DMA controllers */ - if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0 && hwif->dma_base == 0) - hwif->swdma_mask = hwif->mwdma_mask = hwif->ultra_mask = 0; + if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) { + int rc; + + if (d->init_dma) + rc = d->init_dma(hwif, d); + else + rc = ide_hwif_setup_dma(hwif, d); + + if (rc < 0) { + printk(KERN_INFO "%s: DMA disabled\n", hwif->name); + hwif->swdma_mask = 0; + hwif->mwdma_mask = 0; + hwif->ultra_mask = 0; + } + } if (d->host_flags & IDE_HFLAG_RQSIZE_256) hwif->rqsize = 256; -- cgit v1.2.3