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authorTakashi Yoshii <yoshii.takashi@renesas.com>2009-04-02 11:03:30 +0200
committerPaul Mundt <lethal@linux-sh.org>2009-04-04 17:50:52 +0200
commit68b42d1b548be1840aff7122fdebeb804daf0fa3 (patch)
treeb971d30d186a197eeabc18c150eee0496c4614ff /arch/sh
parentsh: Fix up DSP context save/restore. (diff)
downloadlinux-68b42d1b548be1840aff7122fdebeb804daf0fa3.tar.xz
linux-68b42d1b548be1840aff7122fdebeb804daf0fa3.zip
sh: sh7785lcr: Map whole PCI address space.
PCI still doesn't work on sh7785lcr 29bit 256M map mode. On SH7785, PCI -> SHwy address translation is not base+offset but somewhat like base|offset (See HW Manual (rej09b0261) Fig. 13.11). So, you can't export CS2,3,4,5 by 256M at CS2 (results CS0,1,2,3 exported, I guess). There are two candidates. a) 128M@CS2 + 128M@CS4 b) 512M@CS0 Attached patch is B. It maps 512M Byte at 0 independently of memory size. It results CS0 to CS6 and perhaps some more being accessible from PCI. Tested on 7785lcr 29bit 128M map 7785lcr 29bit 256M map (NOT tested on 32bit) Signed-off-by: Takashi YOSHII <yoshii.takashi@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/drivers/pci/ops-sh7785lcr.c9
-rw-r--r--arch/sh/drivers/pci/pci-sh7780.c16
2 files changed, 8 insertions, 17 deletions
diff --git a/arch/sh/drivers/pci/ops-sh7785lcr.c b/arch/sh/drivers/pci/ops-sh7785lcr.c
index b3bd68702059..e8b7446a7c2b 100644
--- a/arch/sh/drivers/pci/ops-sh7785lcr.c
+++ b/arch/sh/drivers/pci/ops-sh7785lcr.c
@@ -48,13 +48,8 @@ EXPORT_SYMBOL(board_pci_channels);
static struct sh4_pci_address_map sh7785_pci_map = {
.window0 = {
- .base = SH7780_CS2_BASE_ADDR,
- .size = 0x04000000,
- },
-
- .window1 = {
- .base = SH7780_CS3_BASE_ADDR,
- .size = 0x04000000,
+ .base = SH7780_CS0_BASE_ADDR,
+ .size = 0x20000000,
},
.flags = SH4_PCIC_NO_RESET,
diff --git a/arch/sh/drivers/pci/pci-sh7780.c b/arch/sh/drivers/pci/pci-sh7780.c
index 773d575a04b9..bae6a2cf047d 100644
--- a/arch/sh/drivers/pci/pci-sh7780.c
+++ b/arch/sh/drivers/pci/pci-sh7780.c
@@ -120,19 +120,15 @@ int __init sh7780_pcic_init(struct sh4_pci_address_map *map)
/* Set IO and Mem windows to local address
* Make PCI and local address the same for easy 1 to 1 mapping
- * Window0 = map->window0.size @ non-cached area base = SDRAM
- * Window1 = map->window1.size @ cached area base = SDRAM
*/
- word = (CONFIG_MEMORY_SIZE - 0x00100000) | 0x00000001;
- pci_write_reg(word, SH4_PCILSR0);
- pci_write_reg(0x00000001, SH4_PCILSR1);
+ pci_write_reg(map->window0.size - 0xfffff, SH4_PCILSR0);
+ pci_write_reg(map->window1.size - 0xfffff, SH4_PCILSR1);
/* Set the values on window 0 PCI config registers */
- word = CONFIG_MEMORY_START | (CONFIG_MEMORY_SIZE - 0x01000000);
- pci_write_reg(word, SH4_PCILAR0);
- pci_write_reg(word, SH7780_PCIMBAR0);
+ pci_write_reg(map->window0.base, SH4_PCILAR0);
+ pci_write_reg(map->window0.base, SH7780_PCIMBAR0);
/* Set the values on window 1 PCI config registers */
- pci_write_reg(0x00000000, SH4_PCILAR1);
- pci_write_reg(0x00000000, SH7780_PCIMBAR1);
+ pci_write_reg(map->window1.base, SH4_PCILAR1);
+ pci_write_reg(map->window1.base, SH7780_PCIMBAR1);
/* Map IO space into PCI IO window
* The IO window is 64K-PCIBIOS_MIN_IO in size