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authorGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>2007-09-06 18:14:57 +0200
committerPaul Mackerras <paulus@samba.org>2007-09-11 04:30:37 +1000
commitd51dd3de87026cb0ea1ea5f873f08e930053bfc5 (patch)
tree768930abcee760f9e68f6cca1f7feaf970b7f7f6
parentef8034d01a080e81488e9cf74052acf1e2a37bd0 (diff)
[POWERPC] cell/PS3: Ignore storage devices that are still being probed
On PS3, A storage device may show up in the repository before the hypervisor has finished probing: - If its type is not yet known, it shows up as PS3_DEV_TYPE_STOR_DUMMY, - If its regions are being probed, it shows up as having zero regions. If any of these happen, consider the device not yet present. The storage probe thread will retry later. This fixes the timing-dependent problem where a kernel booted from FLASH ROM sometimes cannot find the hard disk. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/powerpc/platforms/ps3/platform.h1
-rw-r--r--arch/powerpc/platforms/ps3/repository.c29
2 files changed, 30 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/ps3/platform.h b/arch/powerpc/platforms/ps3/platform.h
index 87d52060fec..2eb8f92704b 100644
--- a/arch/powerpc/platforms/ps3/platform.h
+++ b/arch/powerpc/platforms/ps3/platform.h
@@ -83,6 +83,7 @@ enum ps3_dev_type {
PS3_DEV_TYPE_STOR_ROM = TYPE_ROM, /* 5 */
PS3_DEV_TYPE_SB_GPIO = 6,
PS3_DEV_TYPE_STOR_FLASH = TYPE_RBC, /* 14 */
+ PS3_DEV_TYPE_STOR_DUMMY = 32,
PS3_DEV_TYPE_NOACCESS = 255,
};
diff --git a/arch/powerpc/platforms/ps3/repository.c b/arch/powerpc/platforms/ps3/repository.c
index 8cc37cfea0f..1c94824f7b6 100644
--- a/arch/powerpc/platforms/ps3/repository.c
+++ b/arch/powerpc/platforms/ps3/repository.c
@@ -349,6 +349,35 @@ int ps3_repository_find_device(struct ps3_repository_device *repo)
return result;
}
+ if (tmp.bus_type == PS3_BUS_TYPE_STORAGE) {
+ /*
+ * A storage device may show up in the repository before the
+ * hypervisor has finished probing its type and regions
+ */
+ unsigned int num_regions;
+
+ if (tmp.dev_type == PS3_DEV_TYPE_STOR_DUMMY) {
+ pr_debug("%s:%u storage device not ready\n", __func__,
+ __LINE__);
+ return -ENODEV;
+ }
+
+ result = ps3_repository_read_stor_dev_num_regions(tmp.bus_index,
+ tmp.dev_index,
+ &num_regions);
+ if (result) {
+ pr_debug("%s:%d read_stor_dev_num_regions failed\n",
+ __func__, __LINE__);
+ return result;
+ }
+
+ if (!num_regions) {
+ pr_debug("%s:%u storage device has no regions yet\n",
+ __func__, __LINE__);
+ return -ENODEV;
+ }
+ }
+
result = ps3_repository_read_dev_id(tmp.bus_index, tmp.dev_index,
&tmp.dev_id);