diff options
Diffstat (limited to 'arch/powerpc/platforms/4xx/msi.c')
| -rw-r--r-- | arch/powerpc/platforms/4xx/msi.c | 51 |
1 files changed, 30 insertions, 21 deletions
diff --git a/arch/powerpc/platforms/4xx/msi.c b/arch/powerpc/platforms/4xx/msi.c index 81b2cbce7df870..7c324eff2f2214 100644 --- a/arch/powerpc/platforms/4xx/msi.c +++ b/arch/powerpc/platforms/4xx/msi.c @@ -146,13 +146,19 @@ static int ppc4xx_setup_pcieh_hw(struct platform_device *dev, const u32 *sdr_addr; dma_addr_t msi_phys; void *msi_virt; + int err; sdr_addr = of_get_property(dev->dev.of_node, "sdr-base", NULL); if (!sdr_addr) - return -1; + return -EINVAL; - mtdcri(SDR0, *sdr_addr, upper_32_bits(res.start)); /*HIGH addr */ - mtdcri(SDR0, *sdr_addr + 1, lower_32_bits(res.start)); /* Low addr */ + msi_data = of_get_property(dev->dev.of_node, "msi-data", NULL); + if (!msi_data) + return -EINVAL; + + msi_mask = of_get_property(dev->dev.of_node, "msi-mask", NULL); + if (!msi_mask) + return -EINVAL; msi->msi_dev = of_find_node_by_name(NULL, "ppc4xx-msi"); if (!msi->msi_dev) @@ -160,30 +166,30 @@ static int ppc4xx_setup_pcieh_hw(struct platform_device *dev, msi->msi_regs = of_iomap(msi->msi_dev, 0); if (!msi->msi_regs) { - dev_err(&dev->dev, "of_iomap problem failed\n"); - return -ENOMEM; + dev_err(&dev->dev, "of_iomap failed\n"); + err = -ENOMEM; + goto node_put; } dev_dbg(&dev->dev, "PCIE-MSI: msi register mapped 0x%x 0x%x\n", (u32) (msi->msi_regs + PEIH_TERMADH), (u32) (msi->msi_regs)); msi_virt = dma_alloc_coherent(&dev->dev, 64, &msi_phys, GFP_KERNEL); - if (!msi_virt) - return -ENOMEM; + if (!msi_virt) { + err = -ENOMEM; + goto iounmap; + } msi->msi_addr_hi = upper_32_bits(msi_phys); msi->msi_addr_lo = lower_32_bits(msi_phys & 0xffffffff); dev_dbg(&dev->dev, "PCIE-MSI: msi address high 0x%x, low 0x%x\n", msi->msi_addr_hi, msi->msi_addr_lo); + mtdcri(SDR0, *sdr_addr, upper_32_bits(res.start)); /*HIGH addr */ + mtdcri(SDR0, *sdr_addr + 1, lower_32_bits(res.start)); /* Low addr */ + /* Progam the Interrupt handler Termination addr registers */ out_be32(msi->msi_regs + PEIH_TERMADH, msi->msi_addr_hi); out_be32(msi->msi_regs + PEIH_TERMADL, msi->msi_addr_lo); - msi_data = of_get_property(dev->dev.of_node, "msi-data", NULL); - if (!msi_data) - return -1; - msi_mask = of_get_property(dev->dev.of_node, "msi-mask", NULL); - if (!msi_mask) - return -1; /* Program MSI Expected data and Mask bits */ out_be32(msi->msi_regs + PEIH_MSIED, *msi_data); out_be32(msi->msi_regs + PEIH_MSIMK, *msi_mask); @@ -191,6 +197,12 @@ static int ppc4xx_setup_pcieh_hw(struct platform_device *dev, dma_free_coherent(&dev->dev, 64, msi_virt, msi_phys); return 0; + +iounmap: + iounmap(msi->msi_regs); +node_put: + of_node_put(msi->msi_dev); + return err; } static int ppc4xx_of_msi_remove(struct platform_device *dev) @@ -209,7 +221,6 @@ static int ppc4xx_of_msi_remove(struct platform_device *dev) msi_bitmap_free(&msi->bitmap); iounmap(msi->msi_regs); of_node_put(msi->msi_dev); - kfree(msi); return 0; } @@ -223,18 +234,16 @@ static int ppc4xx_msi_probe(struct platform_device *dev) dev_dbg(&dev->dev, "PCIE-MSI: Setting up MSI support...\n"); - msi = kzalloc(sizeof(*msi), GFP_KERNEL); - if (!msi) { - dev_err(&dev->dev, "No memory for MSI structure\n"); + msi = devm_kzalloc(&dev->dev, sizeof(*msi), GFP_KERNEL); + if (!msi) return -ENOMEM; - } dev->dev.platform_data = msi; /* Get MSI ranges */ err = of_address_to_resource(dev->dev.of_node, 0, &res); if (err) { dev_err(&dev->dev, "%pOF resource error!\n", dev->dev.of_node); - goto error_out; + return err; } msi_irqs = of_irq_count(dev->dev.of_node); @@ -243,7 +252,7 @@ static int ppc4xx_msi_probe(struct platform_device *dev) err = ppc4xx_setup_pcieh_hw(dev, res, msi); if (err) - goto error_out; + return err; err = ppc4xx_msi_init_allocator(dev, msi); if (err) { @@ -256,7 +265,7 @@ static int ppc4xx_msi_probe(struct platform_device *dev) phb->controller_ops.setup_msi_irqs = ppc4xx_setup_msi_irqs; phb->controller_ops.teardown_msi_irqs = ppc4xx_teardown_msi_irqs; } - return err; + return 0; error_out: ppc4xx_of_msi_remove(dev); |