diff options
Diffstat (limited to 'arch/arm/mach-ixp4xx/common-pci.c')
| -rw-r--r-- | arch/arm/mach-ixp4xx/common-pci.c | 43 |
1 files changed, 25 insertions, 18 deletions
diff --git a/arch/arm/mach-ixp4xx/common-pci.c b/arch/arm/mach-ixp4xx/common-pci.c index e9a5893..8325058 100644 --- a/arch/arm/mach-ixp4xx/common-pci.c +++ b/arch/arm/mach-ixp4xx/common-pci.c @@ -26,6 +26,7 @@ #include <linux/delay.h> #include <linux/device.h> #include <linux/io.h> +#include <linux/export.h> #include <asm/dma-mapping.h> #include <asm/cputype.h> @@ -54,7 +55,7 @@ unsigned long ixp4xx_pci_reg_base = 0; * these transactions are atomic or we will end up * with corrupt data on the bus or in a driver. */ -static DEFINE_SPINLOCK(ixp4xx_pci_lock); +static DEFINE_RAW_SPINLOCK(ixp4xx_pci_lock); /* * Read from PCI config space @@ -62,10 +63,10 @@ static DEFINE_SPINLOCK(ixp4xx_pci_lock); static void crp_read(u32 ad_cbe, u32 *data) { unsigned long flags; - spin_lock_irqsave(&ixp4xx_pci_lock, flags); + raw_spin_lock_irqsave(&ixp4xx_pci_lock, flags); *PCI_CRP_AD_CBE = ad_cbe; *data = *PCI_CRP_RDATA; - spin_unlock_irqrestore(&ixp4xx_pci_lock, flags); + raw_spin_unlock_irqrestore(&ixp4xx_pci_lock, flags); } /* @@ -74,10 +75,10 @@ static void crp_read(u32 ad_cbe, u32 *data) static void crp_write(u32 ad_cbe, u32 data) { unsigned long flags; - spin_lock_irqsave(&ixp4xx_pci_lock, flags); + raw_spin_lock_irqsave(&ixp4xx_pci_lock, flags); *PCI_CRP_AD_CBE = CRP_AD_CBE_WRITE | ad_cbe; *PCI_CRP_WDATA = data; - spin_unlock_irqrestore(&ixp4xx_pci_lock, flags); + raw_spin_unlock_irqrestore(&ixp4xx_pci_lock, flags); } static inline int check_master_abort(void) @@ -101,7 +102,7 @@ int ixp4xx_pci_read_errata(u32 addr, u32 cmd, u32* data) int retval = 0; int i; - spin_lock_irqsave(&ixp4xx_pci_lock, flags); + raw_spin_lock_irqsave(&ixp4xx_pci_lock, flags); *PCI_NP_AD = addr; @@ -118,7 +119,7 @@ int ixp4xx_pci_read_errata(u32 addr, u32 cmd, u32* data) if(check_master_abort()) retval = 1; - spin_unlock_irqrestore(&ixp4xx_pci_lock, flags); + raw_spin_unlock_irqrestore(&ixp4xx_pci_lock, flags); return retval; } @@ -127,7 +128,7 @@ int ixp4xx_pci_read_no_errata(u32 addr, u32 cmd, u32* data) unsigned long flags; int retval = 0; - spin_lock_irqsave(&ixp4xx_pci_lock, flags); + raw_spin_lock_irqsave(&ixp4xx_pci_lock, flags); *PCI_NP_AD = addr; @@ -140,7 +141,7 @@ int ixp4xx_pci_read_no_errata(u32 addr, u32 cmd, u32* data) if(check_master_abort()) retval = 1; - spin_unlock_irqrestore(&ixp4xx_pci_lock, flags); + raw_spin_unlock_irqrestore(&ixp4xx_pci_lock, flags); return retval; } @@ -149,7 +150,7 @@ int ixp4xx_pci_write(u32 addr, u32 cmd, u32 data) unsigned long flags; int retval = 0; - spin_lock_irqsave(&ixp4xx_pci_lock, flags); + raw_spin_lock_irqsave(&ixp4xx_pci_lock, flags); *PCI_NP_AD = addr; @@ -162,7 +163,7 @@ int ixp4xx_pci_write(u32 addr, u32 cmd, u32 data) if(check_master_abort()) retval = 1; - spin_unlock_irqrestore(&ixp4xx_pci_lock, flags); + raw_spin_unlock_irqrestore(&ixp4xx_pci_lock, flags); return retval; } @@ -316,6 +317,11 @@ static int abort_handler(unsigned long addr, unsigned int fsr, struct pt_regs *r } +static int ixp4xx_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size) +{ + return (dma_addr + size) >= SZ_64M; +} + /* * Setup DMA mask to 64MB on PCI devices. Ignore all other devices. */ @@ -324,7 +330,7 @@ static int ixp4xx_pci_platform_notify(struct device *dev) if(dev->bus == &pci_bus_type) { *dev->dma_mask = SZ_64M - 1; dev->coherent_dma_mask = SZ_64M - 1; - dmabounce_register_dev(dev, 2048, 4096); + dmabounce_register_dev(dev, 2048, 4096, ixp4xx_needs_bounce); } return 0; } @@ -337,15 +343,15 @@ static int ixp4xx_pci_platform_notify_remove(struct device *dev) return 0; } -int dma_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size) -{ - return (dev->bus == &pci_bus_type ) && ((dma_addr + size) >= SZ_64M); -} - void __init ixp4xx_pci_preinit(void) { unsigned long cpuid = read_cpuid_id(); +#ifdef CONFIG_IXP4XX_INDIRECT_PCI + pcibios_min_mem = 0x10000000; /* 1 GB of indirect PCI MMIO space */ +#else + pcibios_min_mem = 0x48000000; /* 64 MB of PCI MMIO space */ +#endif /* * Determine which PCI read method to use. * Rev 0 IXP425 requires workaround. @@ -392,7 +398,8 @@ void __init ixp4xx_pci_preinit(void) local_write_config(PCI_BASE_ADDRESS_0, 4, PHYS_OFFSET); local_write_config(PCI_BASE_ADDRESS_1, 4, PHYS_OFFSET + SZ_16M); local_write_config(PCI_BASE_ADDRESS_2, 4, PHYS_OFFSET + SZ_32M); - local_write_config(PCI_BASE_ADDRESS_3, 4, PHYS_OFFSET + SZ_48M); + local_write_config(PCI_BASE_ADDRESS_3, 4, + PHYS_OFFSET + SZ_32M + SZ_16M); /* * Enable CSR window at 64 MiB to allow PCI masters |