From 04668873daa822aa6c806ba28d1143db8dcb26e8 Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 1 Aug 2007 19:04:51 +0100 Subject: [PATCH] FRV: Enable the MB86943 PCI arbiter correctly Enable the MB93090 motherboard's MB86943 PCI arbiter correctly by assigning to the register rather than comparing against it. This is required to support bus mastering. Signed-off-by: David Howells Signed-off-by: Linus Torvalds --- arch/frv/mb93090-mb00/pci-vdk.c | 3 ++- include/asm-frv/mb86943a.h | 3 +++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/frv/mb93090-mb00/pci-vdk.c b/arch/frv/mb93090-mb00/pci-vdk.c index 0b581e3cf7c7..6d51f133fb23 100644 --- a/arch/frv/mb93090-mb00/pci-vdk.c +++ b/arch/frv/mb93090-mb00/pci-vdk.c @@ -400,7 +400,8 @@ int __init pcibios_init(void) __reg_MB86943_pci_sl_mem_base = __region_CS2 + 0x08000000; mb(); - *(volatile unsigned long *)(__region_CS2+0x01300014) == 1; + /* enable PCI arbitration */ + __reg_MB86943_pci_arbiter = MB86943_PCIARB_EN; ioport_resource.start = (__reg_MB86943_sl_pci_io_base << 9) & 0xfffffc00; ioport_resource.end = (__reg_MB86943_sl_pci_io_range << 9) | 0x3ff; diff --git a/include/asm-frv/mb86943a.h b/include/asm-frv/mb86943a.h index b89fd0b56bb3..e87ef924bfb4 100644 --- a/include/asm-frv/mb86943a.h +++ b/include/asm-frv/mb86943a.h @@ -36,4 +36,7 @@ #define __reg_MB86943_pci_sl_io_base *(volatile uint32_t *) (__region_CS1 + 0x70) #define __reg_MB86943_pci_sl_mem_base *(volatile uint32_t *) (__region_CS1 + 0x78) +#define __reg_MB86943_pci_arbiter *(volatile uint32_t *) (__region_CS2 + 0x01300014) +#define MB86943_PCIARB_EN 0x00000001 + #endif /* _ASM_MB86943A_H */ -- 2.20.1