diff options
Diffstat (limited to 'arch/arm/common/it8152.c')
| -rw-r--r-- | arch/arm/common/it8152.c | 77 |
1 files changed, 39 insertions, 38 deletions
diff --git a/arch/arm/common/it8152.c b/arch/arm/common/it8152.c index 1bec96e8519..5114b68e99d 100644 --- a/arch/arm/common/it8152.c +++ b/arch/arm/common/it8152.c @@ -25,14 +25,17 @@ #include <linux/ioport.h> #include <linux/irq.h> #include <linux/io.h> +#include <linux/export.h> #include <asm/mach/pci.h> #include <asm/hardware/it8152.h> #define MAX_SLOTS 21 -static void it8152_mask_irq(unsigned int irq) +static void it8152_mask_irq(struct irq_data *d) { + unsigned int irq = d->irq; + if (irq >= IT8152_LD_IRQ(0)) { __raw_writel((__raw_readl(IT8152_INTC_LDCNIMR) | (1 << (irq - IT8152_LD_IRQ(0)))), @@ -48,8 +51,10 @@ static void it8152_mask_irq(unsigned int irq) } } -static void it8152_unmask_irq(unsigned int irq) +static void it8152_unmask_irq(struct irq_data *d) { + unsigned int irq = d->irq; + if (irq >= IT8152_LD_IRQ(0)) { __raw_writel((__raw_readl(IT8152_INTC_LDCNIMR) & ~(1 << (irq - IT8152_LD_IRQ(0)))), @@ -67,9 +72,9 @@ static void it8152_unmask_irq(unsigned int irq) static struct irq_chip it8152_irq_chip = { .name = "it8152", - .ack = it8152_mask_irq, - .mask = it8152_mask_irq, - .unmask = it8152_unmask_irq, + .irq_ack = it8152_mask_irq, + .irq_mask = it8152_mask_irq, + .irq_unmask = it8152_unmask_irq, }; void it8152_init_irq(void) @@ -84,8 +89,8 @@ void it8152_init_irq(void) __raw_writel((0), IT8152_INTC_LDCNIRR); for (irq = IT8152_IRQ(0); irq <= IT8152_LAST_IRQ; irq++) { - set_irq_chip(irq, &it8152_irq_chip); - set_irq_handler(irq, handle_level_irq); + irq_set_chip_and_handler(irq, &it8152_irq_chip, + handle_level_irq); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } } @@ -140,7 +145,7 @@ void it8152_irq_demux(unsigned int irq, struct irq_desc *desc) } /* mapping for on-chip devices */ -int __init it8152_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init it8152_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { if ((dev->vendor == PCI_VENDOR_ID_ITE) && (dev->device == PCI_DEVICE_ID_ITE_8152)) { @@ -217,7 +222,7 @@ static int it8152_pci_write_config(struct pci_bus *bus, return PCIBIOS_SUCCESSFUL; } -static struct pci_ops it8152_ops = { +struct pci_ops it8152_ops = { .read = it8152_pci_read_config, .write = it8152_pci_write_config, }; @@ -236,9 +241,15 @@ static struct resource it8152_mem = { /* * The following functions are needed for DMA bouncing. - * ITE8152 chip can addrees up to 64MByte, so all the devices + * ITE8152 chip can address up to 64MByte, so all the devices * connected to ITE8152 (PCI and USB) should have limited DMA window */ +static int it8152_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size) +{ + dev_dbg(dev, "%s: dma_addr %08x, size %08x\n", + __func__, dma_addr, size); + return (dma_addr + size - PHYS_OFFSET) >= SZ_64M; +} /* * Setup DMA mask to 64MB on devices connected to ITE8152. Ignore all @@ -246,31 +257,23 @@ static struct resource it8152_mem = { */ static int it8152_pci_platform_notify(struct device *dev) { - if (dev->bus == &pci_bus_type) { + if (dev_is_pci(dev)) { if (dev->dma_mask) *dev->dma_mask = (SZ_64M - 1) | PHYS_OFFSET; dev->coherent_dma_mask = (SZ_64M - 1) | PHYS_OFFSET; - dmabounce_register_dev(dev, 2048, 4096); + dmabounce_register_dev(dev, 2048, 4096, it8152_needs_bounce); } return 0; } static int it8152_pci_platform_notify_remove(struct device *dev) { - if (dev->bus == &pci_bus_type) + if (dev_is_pci(dev)) dmabounce_unregister_dev(dev); return 0; } -int dma_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size) -{ - dev_dbg(dev, "%s: dma_addr %08x, size %08x\n", - __func__, dma_addr, size); - return (dev->bus == &pci_bus_type) && - ((dma_addr + size - PHYS_OFFSET) >= SZ_64M); -} - int dma_set_coherent_mask(struct device *dev, u64 mask) { if (mask >= PHYS_OFFSET + SZ_64M - 1) @@ -281,11 +284,17 @@ int dma_set_coherent_mask(struct device *dev, u64 mask) int __init it8152_pci_setup(int nr, struct pci_sys_data *sys) { - it8152_io.start = IT8152_IO_BASE + 0x12000; - it8152_io.end = IT8152_IO_BASE + 0x12000 + 0x100000; + /* + * FIXME: use pci_ioremap_io to remap the IO space here and + * move over to the generic io.h implementation. + * This requires solving the same problem for PXA PCMCIA + * support. + */ + it8152_io.start = (unsigned long)IT8152_IO_BASE + 0x12000; + it8152_io.end = (unsigned long)IT8152_IO_BASE + 0x12000 + 0x100000; sys->mem_offset = 0x10000000; - sys->io_offset = IT8152_IO_BASE; + sys->io_offset = (unsigned long)IT8152_IO_BASE; if (request_resource(&ioport_resource, &it8152_io)) { printk(KERN_ERR "PCI: unable to allocate IO region\n"); @@ -296,8 +305,8 @@ int __init it8152_pci_setup(int nr, struct pci_sys_data *sys) goto err1; } - sys->resource[0] = &it8152_io; - sys->resource[1] = &it8152_mem; + pci_add_resource_offset(&sys->resources, &it8152_io, sys->io_offset); + pci_add_resource_offset(&sys->resources, &it8152_mem, sys->mem_offset); if (platform_notify || platform_notify_remove) { printk(KERN_ERR "PCI: Can't use platform_notify\n"); @@ -317,13 +326,9 @@ err0: return -EBUSY; } -/* - * If we set up a device for bus mastering, we need to check the latency - * timer as we don't have even crappy BIOSes to set it properly. - * The implementation is from arch/i386/pci/i386.c - */ -unsigned int pcibios_max_latency = 255; - +/* ITE bridge requires setting latency timer to avoid early bus access + termination by PCI bus master devices +*/ void pcibios_set_master(struct pci_dev *dev) { u8 lat; @@ -347,8 +352,4 @@ void pcibios_set_master(struct pci_dev *dev) } -struct pci_bus * __init it8152_pci_scan_bus(int nr, struct pci_sys_data *sys) -{ - return pci_scan_bus(nr, &it8152_ops, sys); -} - +EXPORT_SYMBOL(dma_set_coherent_mask); |