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authorGeoff Levand <geoffrey.levand@am.sony.com>2009-09-09 17:28:05 +0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-09-11 05:28:00 +0400
commitbc00351edd5c1b84d48c3fdca740fedfce4ae6ce (patch)
treeb6e85ec226b7a7e94fac1699b9cf64a4c721c117
parentc6c9eacef09a94b5866b83556196440aca876702 (diff)
downloadlinux-bc00351edd5c1b84d48c3fdca740fedfce4ae6ce.tar.xz
powerpc/ps3: Workaround for flash memory I/O error
A workaround for flash memory I/O errors when the PS3 internal hard disk has not been formatted for OtherOS use. This error condition mainly effects 'Live CD' users who have not formatted the PS3's internal hard disk for OtherOS. Fixes errors similar to these when using the ps3-flash-util or ps3-boot-game-os programs: ps3flash read failed 0x2050000 os_area_header_read: read error: os_area_header: Input/output error main:627: os_area_read_hp error. ERROR: can't change boot flag Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-rw-r--r--drivers/ps3/ps3stor_lib.c65
1 files changed, 62 insertions, 3 deletions
diff --git a/drivers/ps3/ps3stor_lib.c b/drivers/ps3/ps3stor_lib.c
index 18066d555397..af0afa1db4a8 100644
--- a/drivers/ps3/ps3stor_lib.c
+++ b/drivers/ps3/ps3stor_lib.c
@@ -23,6 +23,65 @@
#include <asm/lv1call.h>
#include <asm/ps3stor.h>
+/*
+ * A workaround for flash memory I/O errors when the internal hard disk
+ * has not been formatted for OtherOS use. Delay disk close until flash
+ * memory is closed.
+ */
+
+static struct ps3_flash_workaround {
+ int flash_open;
+ int disk_open;
+ struct ps3_system_bus_device *disk_sbd;
+} ps3_flash_workaround;
+
+static int ps3stor_open_hv_device(struct ps3_system_bus_device *sbd)
+{
+ int error = ps3_open_hv_device(sbd);
+
+ if (error)
+ return error;
+
+ if (sbd->match_id == PS3_MATCH_ID_STOR_FLASH)
+ ps3_flash_workaround.flash_open = 1;
+
+ if (sbd->match_id == PS3_MATCH_ID_STOR_DISK)
+ ps3_flash_workaround.disk_open = 1;
+
+ return 0;
+}
+
+static int ps3stor_close_hv_device(struct ps3_system_bus_device *sbd)
+{
+ int error;
+
+ if (sbd->match_id == PS3_MATCH_ID_STOR_DISK
+ && ps3_flash_workaround.disk_open
+ && ps3_flash_workaround.flash_open) {
+ ps3_flash_workaround.disk_sbd = sbd;
+ return 0;
+ }
+
+ error = ps3_close_hv_device(sbd);
+
+ if (error)
+ return error;
+
+ if (sbd->match_id == PS3_MATCH_ID_STOR_DISK)
+ ps3_flash_workaround.disk_open = 0;
+
+ if (sbd->match_id == PS3_MATCH_ID_STOR_FLASH) {
+ ps3_flash_workaround.flash_open = 0;
+
+ if (ps3_flash_workaround.disk_sbd) {
+ ps3_close_hv_device(ps3_flash_workaround.disk_sbd);
+ ps3_flash_workaround.disk_open = 0;
+ ps3_flash_workaround.disk_sbd = NULL;
+ }
+ }
+
+ return 0;
+}
static int ps3stor_probe_access(struct ps3_storage_device *dev)
{
@@ -90,7 +149,7 @@ int ps3stor_setup(struct ps3_storage_device *dev, irq_handler_t handler)
int error, res, alignment;
enum ps3_dma_page_size page_size;
- error = ps3_open_hv_device(&dev->sbd);
+ error = ps3stor_open_hv_device(&dev->sbd);
if (error) {
dev_err(&dev->sbd.core,
"%s:%u: ps3_open_hv_device failed %d\n", __func__,
@@ -166,7 +225,7 @@ fail_free_irq:
fail_sb_event_receive_port_destroy:
ps3_sb_event_receive_port_destroy(&dev->sbd, dev->irq);
fail_close_device:
- ps3_close_hv_device(&dev->sbd);
+ ps3stor_close_hv_device(&dev->sbd);
fail:
return error;
}
@@ -193,7 +252,7 @@ void ps3stor_teardown(struct ps3_storage_device *dev)
"%s:%u: destroy event receive port failed %d\n",
__func__, __LINE__, error);
- error = ps3_close_hv_device(&dev->sbd);
+ error = ps3stor_close_hv_device(&dev->sbd);
if (error)
dev_err(&dev->sbd.core,
"%s:%u: ps3_close_hv_device failed %d\n", __func__,