From f2427e276ffec5ce599c6bc116e0927269a360ef Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 28 Jul 2009 14:42:38 -0700 Subject: ioat: split ioat_dma_probe into core/version-specific routines Towards the removal of ioatdma_device.version split the initialization path into distinct versions. This conversion: 1/ moves version specific probe code to version specific routines 2/ removes the need for ioat_device 3/ turns off the ioat1 msi quirk if the device is reinitialized for intx Signed-off-by: Maciej Sosnowski Signed-off-by: Dan Williams --- drivers/dma/ioat/pci.c | 79 +++++++++++++++++++++++--------------------------- 1 file changed, 37 insertions(+), 42 deletions(-) (limited to 'drivers/dma/ioat/pci.c') diff --git a/drivers/dma/ioat/pci.c b/drivers/dma/ioat/pci.c index 982e38fd177..55414d88ac1 100644 --- a/drivers/dma/ioat/pci.c +++ b/drivers/dma/ioat/pci.c @@ -60,14 +60,8 @@ static struct pci_device_id ioat_pci_tbl[] = { { 0, } }; -struct ioat_device { - struct pci_dev *pdev; - struct ioatdma_device *dma; - struct dca_provider *dca; -}; - -static int __devinit ioat_probe(struct pci_dev *pdev, - const struct pci_device_id *id); +static int __devinit ioat_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *id); static void __devexit ioat_remove(struct pci_dev *pdev); static int ioat_dca_enabled = 1; @@ -79,17 +73,28 @@ MODULE_PARM_DESC(ioat_dca_enabled, "control support of dca service (default: 1)" static struct pci_driver ioat_pci_driver = { .name = DRV_NAME, .id_table = ioat_pci_tbl, - .probe = ioat_probe, + .probe = ioat_pci_probe, .remove = __devexit_p(ioat_remove), }; -static int __devinit ioat_probe(struct pci_dev *pdev, - const struct pci_device_id *id) +static struct ioatdma_device * +alloc_ioatdma(struct pci_dev *pdev, void __iomem *iobase) +{ + struct device *dev = &pdev->dev; + struct ioatdma_device *d = devm_kzalloc(dev, sizeof(*d), GFP_KERNEL); + + if (!d) + return NULL; + d->pdev = pdev; + d->reg_base = iobase; + return d; +} + +static int __devinit ioat_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { void __iomem * const *iomap; - void __iomem *iobase; struct device *dev = &pdev->dev; - struct ioat_device *device; + struct ioatdma_device *device; int err; err = pcim_enable_device(pdev); @@ -119,33 +124,24 @@ static int __devinit ioat_probe(struct pci_dev *pdev, if (!device) return -ENOMEM; - device->pdev = pdev; - pci_set_drvdata(pdev, device); - iobase = iomap[IOAT_MMIO_BAR]; - pci_set_master(pdev); - switch (readb(iobase + IOAT_VER_OFFSET)) { - case IOAT_VER_1_2: - device->dma = ioat_dma_probe(pdev, iobase); - if (device->dma && ioat_dca_enabled) - device->dca = ioat_dca_init(pdev, iobase); - break; - case IOAT_VER_2_0: - device->dma = ioat_dma_probe(pdev, iobase); - if (device->dma && ioat_dca_enabled) - device->dca = ioat2_dca_init(pdev, iobase); - break; - case IOAT_VER_3_0: - device->dma = ioat_dma_probe(pdev, iobase); - if (device->dma && ioat_dca_enabled) - device->dca = ioat3_dca_init(pdev, iobase); - break; - default: + device = alloc_ioatdma(pdev, iomap[IOAT_MMIO_BAR]); + if (!device) + return -ENOMEM; + pci_set_drvdata(pdev, device); + + device->version = readb(device->reg_base + IOAT_VER_OFFSET); + if (device->version == IOAT_VER_1_2) + err = ioat1_dma_probe(device, ioat_dca_enabled); + else if (device->version == IOAT_VER_2_0) + err = ioat2_dma_probe(device, ioat_dca_enabled); + else if (device->version >= IOAT_VER_3_0) + err = ioat3_dma_probe(device, ioat_dca_enabled); + else return -ENODEV; - } - if (!device->dma) { + if (err) { dev_err(dev, "Intel(R) I/OAT DMA Engine init failed\n"); return -ENODEV; } @@ -155,7 +151,10 @@ static int __devinit ioat_probe(struct pci_dev *pdev, static void __devexit ioat_remove(struct pci_dev *pdev) { - struct ioat_device *device = pci_get_drvdata(pdev); + struct ioatdma_device *device = pci_get_drvdata(pdev); + + if (!device) + return; dev_err(&pdev->dev, "Removing dma and dca services\n"); if (device->dca) { @@ -163,11 +162,7 @@ static void __devexit ioat_remove(struct pci_dev *pdev) free_dca_provider(device->dca); device->dca = NULL; } - - if (device->dma) { - ioat_dma_remove(device->dma); - device->dma = NULL; - } + ioat_dma_remove(device); } static int __init ioat_init_module(void) -- cgit v1.2.3