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authorLinus Walleij <linus.walleij@linaro.org>2013-06-26 01:05:51 +0200
committerArnd Bergmann <arnd@arndb.de>2013-06-27 14:19:54 +0200
commit1eb92b24e243085d242cf5ffd64829bba70972e1 (patch)
treec59516e6a3542e370bb52ac9033e22d85ebe04d0 /arch
parent56ce3ffbd5aa7c2b56913efe5e59ee856ea6f898 (diff)
downloadop-kernel-dev-1eb92b24e243085d242cf5ffd64829bba70972e1.zip
op-kernel-dev-1eb92b24e243085d242cf5ffd64829bba70972e1.tar.gz
ARM: integrator: let pciv3 use mem/premem from device tree
Instead of relying on the hard-coded mem/premem bases for the PCI side, read in these from the device tree in the DT probe path. Hard-code the old values on the non-DT probe path. Introduce some static locals to hold these addresses instead of the earlier static #defines. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-integrator/pci_v3.c46
1 files changed, 23 insertions, 23 deletions
diff --git a/arch/arm/mach-integrator/pci_v3.c b/arch/arm/mach-integrator/pci_v3.c
index a0e069d..bef1005 100644
--- a/arch/arm/mach-integrator/pci_v3.c
+++ b/arch/arm/mach-integrator/pci_v3.c
@@ -52,7 +52,8 @@
* the V3 only has two windows (therefore we need to map stuff on the fly),
* we maintain the same addresses, even if they're not mapped.
*/
-#define PHYS_PCI_MEM_BASE 0x40000000 /* 512M */
+#define PHYS_PCI_MEM_BASE 0x40000000 /* 256M */
+#define PHYS_PCI_PRE_BASE 0x50000000 /* 256M */
#define PHYS_PCI_IO_BASE 0x60000000 /* 16M */
#define PHYS_PCI_CONFIG_BASE 0x61000000 /* 16M */
#define PHYS_PCI_V3_BASE 0x62000000 /* 64K */
@@ -285,10 +286,16 @@
/* Filled in by probe */
static void __iomem *pci_v3_base;
+/* CPU side memory ranges */
static struct resource conf_mem; /* FIXME: remap this instead of static map */
static struct resource io_mem;
static struct resource non_mem;
static struct resource pre_mem;
+/* PCI side memory ranges */
+static u64 non_mem_pci;
+static u64 non_mem_pci_sz;
+static u64 pre_mem_pci;
+static u64 pre_mem_pci_sz;
// V3 access routines
#define v3_writeb(o,v) __raw_writeb(v, pci_v3_base + (unsigned int)(o))
@@ -354,19 +361,6 @@ static struct resource pre_mem;
*/
static DEFINE_RAW_SPINLOCK(v3_lock);
-#define PCI_BUS_NONMEM_START 0x00000000
-#define PCI_BUS_NONMEM_SIZE SZ_256M
-
-#define PCI_BUS_PREMEM_START PCI_BUS_NONMEM_START + PCI_BUS_NONMEM_SIZE
-#define PCI_BUS_PREMEM_SIZE SZ_256M
-
-#if PCI_BUS_NONMEM_START & 0x000fffff
-#error PCI_BUS_NONMEM_START must be megabyte aligned
-#endif
-#if PCI_BUS_PREMEM_START & 0x000fffff
-#error PCI_BUS_PREMEM_START must be megabyte aligned
-#endif
-
#undef V3_LB_BASE_PREFETCH
#define V3_LB_BASE_PREFETCH 0
@@ -453,7 +447,7 @@ static void v3_close_config_window(void)
v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(pre_mem.start) |
V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_PREFETCH |
V3_LB_BASE_ENABLE);
- v3_writew(V3_LB_MAP1, v3_addr_to_lb_map(PCI_BUS_PREMEM_START) |
+ v3_writew(V3_LB_MAP1, v3_addr_to_lb_map(pre_mem_pci) |
V3_LB_MAP_TYPE_MEM_MULTIPLE);
/*
@@ -694,7 +688,7 @@ static void __init pci_v3_preinit(void)
*/
v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(non_mem.start) |
V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_ENABLE);
- v3_writew(V3_LB_MAP0, v3_addr_to_lb_map(PCI_BUS_NONMEM_START) |
+ v3_writew(V3_LB_MAP0, v3_addr_to_lb_map(non_mem_pci) |
V3_LB_MAP_TYPE_MEM);
/*
@@ -704,7 +698,7 @@ static void __init pci_v3_preinit(void)
v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(pre_mem.start) |
V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_PREFETCH |
V3_LB_BASE_ENABLE);
- v3_writew(V3_LB_MAP1, v3_addr_to_lb_map(PCI_BUS_PREMEM_START) |
+ v3_writew(V3_LB_MAP1, v3_addr_to_lb_map(pre_mem_pci) |
V3_LB_MAP_TYPE_MEM_MULTIPLE);
/*
@@ -905,11 +899,15 @@ static int __init pci_v3_dtprobe(struct platform_device *pdev,
}
if ((range.flags & IORESOURCE_MEM) &&
!(range.flags & IORESOURCE_PREFETCH)) {
+ non_mem_pci = range.pci_addr;
+ non_mem_pci_sz = range.size;
of_pci_range_to_resource(&range, np, &non_mem);
non_mem.name = "PCIv3 non-prefetched mem";
}
if ((range.flags & IORESOURCE_MEM) &&
(range.flags & IORESOURCE_PREFETCH)) {
+ pre_mem_pci = range.pci_addr;
+ pre_mem_pci_sz = range.size;
of_pci_range_to_resource(&range, np, &pre_mem);
pre_mem.name = "PCIv3 prefetched mem";
}
@@ -976,16 +974,18 @@ static int __init pci_v3_probe(struct platform_device *pdev)
io_mem.end = PHYS_PCI_IO_BASE + SZ_16M - 1;
io_mem.flags = IORESOURCE_MEM;
+ non_mem_pci = 0x00000000;
+ non_mem_pci_sz = SZ_256M;
non_mem.name = "PCIv3 non-prefetched mem";
- non_mem.start = PHYS_PCI_MEM_BASE + PCI_BUS_NONMEM_START;
- non_mem.end = PHYS_PCI_MEM_BASE + PCI_BUS_NONMEM_START +
- PCI_BUS_NONMEM_SIZE - 1;
+ non_mem.start = PHYS_PCI_MEM_BASE;
+ non_mem.end = PHYS_PCI_MEM_BASE + SZ_256M - 1;
non_mem.flags = IORESOURCE_MEM;
+ pre_mem_pci = 0x10000000;
+ pre_mem_pci_sz = SZ_256M;
pre_mem.name = "PCIv3 prefetched mem";
- pre_mem.start = PHYS_PCI_MEM_BASE + PCI_BUS_PREMEM_START;
- pre_mem.end = PHYS_PCI_MEM_BASE + PCI_BUS_PREMEM_START +
- PCI_BUS_PREMEM_SIZE - 1;
+ pre_mem.start = PHYS_PCI_PRE_BASE + SZ_256M;
+ pre_mem.end = PHYS_PCI_PRE_BASE + SZ_256M - 1;
pre_mem.flags = IORESOURCE_MEM | IORESOURCE_PREFETCH;
pci_v3.map_irq = pci_v3_map_irq;
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