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authorJiaxun Yang <jiaxun.yang@flygoat.com>2019-11-07 07:01:18 +0300
committerPaul Burton <paulburton@kernel.org>2019-11-11 21:45:01 +0300
commit53949e0a65b72f1551067d13a4dea3cbce184ded (patch)
tree02dfc0ee31cbf3d58a77efc83a5efc924c644760 /arch/mips
parent574b9a04abfc68c41c3915c2eba2767b78e3e923 (diff)
downloadlinux-53949e0a65b72f1551067d13a4dea3cbce184ded.tar.xz
MIPS: Loongson64: Drop setup_pcimap
setup_pcimap is used to setup address windows for Loongson-3 built-in PCI-X controller, but this function is never been used in the real world and lack of support in kernel. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Paul Burton <paulburton@kernel.org> Cc: linux-mips@vger.kernel.org Cc: chenhe@lemote.com
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/loongson64/pci.c43
1 files changed, 0 insertions, 43 deletions
diff --git a/arch/mips/loongson64/pci.c b/arch/mips/loongson64/pci.c
index 7bbe2388f38e..e84ae20c3290 100644
--- a/arch/mips/loongson64/pci.c
+++ b/arch/mips/loongson64/pci.c
@@ -31,54 +31,11 @@ static struct pci_controller loongson_pci_controller = {
.io_offset = 0x00000000UL,
};
-static void __init setup_pcimap(void)
-{
- /*
- * local to PCI mapping for CPU accessing PCI space
- * CPU address space [256M,448M] is window for accessing pci space
- * we set pcimap_lo[0,1,2] to map it to pci space[0M,64M], [320M,448M]
- *
- * pcimap: PCI_MAP2 PCI_Mem_Lo2 PCI_Mem_Lo1 PCI_Mem_Lo0
- * [<2G] [384M,448M] [320M,384M] [0M,64M]
- */
- LOONGSON_PCIMAP = LOONGSON_PCIMAP_PCIMAP_2 |
- LOONGSON_PCIMAP_WIN(2, LOONGSON_PCILO2_BASE) |
- LOONGSON_PCIMAP_WIN(1, LOONGSON_PCILO1_BASE) |
- LOONGSON_PCIMAP_WIN(0, 0);
-
- /*
- * PCI-DMA to local mapping: [2G,2G+256M] -> [0M,256M]
- */
- LOONGSON_PCIBASE0 = 0x80000000ul; /* base: 2G -> mmap: 0M */
- /* size: 256M, burst transmission, pre-fetch enable, 64bit */
- LOONGSON_PCI_HIT0_SEL_L = 0xc000000cul;
- LOONGSON_PCI_HIT0_SEL_H = 0xfffffffful;
- LOONGSON_PCI_HIT1_SEL_L = 0x00000006ul; /* set this BAR as invalid */
- LOONGSON_PCI_HIT1_SEL_H = 0x00000000ul;
- LOONGSON_PCI_HIT2_SEL_L = 0x00000006ul; /* set this BAR as invalid */
- LOONGSON_PCI_HIT2_SEL_H = 0x00000000ul;
-
- /* avoid deadlock of PCI reading/writing lock operation */
- LOONGSON_PCI_ISR4C = 0xd2000001ul;
-
- /* can not change gnt to break pci transfer when device's gnt not
- deassert for some broken device */
- LOONGSON_PXARB_CFG = 0x00fe0105ul;
-
-#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
- /*
- * set cpu addr window2 to map CPU address space to PCI address space
- */
- LOONGSON_ADDRWIN_CPUTOPCI(ADDRWIN_WIN2, LOONGSON_CPU_MEM_SRC,
- LOONGSON_PCI_MEM_DST, MMAP_CPUTOPCI_SIZE);
-#endif
-}
extern int sbx00_acpi_init(void);
static int __init pcibios_init(void)
{
- setup_pcimap();
loongson_pci_controller.io_map_base = mips_io_port_base;
loongson_pci_mem_resource.start = loongson_sysconf.pci_mem_start_addr;