* [PATCH v2 2/3] powerpc/ps3: Warn on PS3 device errors
2021-06-03 19:16 [PATCH v2 0/3] DMA fixes for PS3 device drivers Geoff Levand
@ 2021-06-03 19:17 ` Geoff Levand
2021-06-03 19:17 ` [PATCH v2 1/3] powerpc/ps3: Add CONFIG_PS3_VERBOSE_RESULT option Geoff Levand
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Geoff Levand @ 2021-06-03 19:17 UTC (permalink / raw)
To: Michael Ellerman; +Cc: Jakub Kicinski, linuxppc-dev, David S. Miller, netdev
To aid debugging PS3 boot problems change the log level
of several PS3 device errors from pr_debug to pr_warn.
Signed-off-by: Geoff Levand <geoff@infradead.org>
---
arch/powerpc/platforms/ps3/system-bus.c | 9 +++++----
drivers/ps3/ps3-vuart.c | 2 +-
drivers/ps3/ps3av.c | 22 +++++++++++-----------
3 files changed, 17 insertions(+), 16 deletions(-)
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index b431f41c6cb5..1a5665875165 100644
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -64,9 +64,10 @@ static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev)
result = lv1_open_device(dev->bus_id, dev->dev_id, 0);
if (result) {
- pr_debug("%s:%d: lv1_open_device failed: %s\n", __func__,
- __LINE__, ps3_result(result));
- result = -EPERM;
+ pr_warn("%s:%d: lv1_open_device dev=%u.%u(%s) failed: %s\n",
+ __func__, __LINE__, dev->match_id, dev->match_sub_id,
+ dev_name(&dev->core), ps3_result(result));
+ result = -EPERM;
}
done:
@@ -120,7 +121,7 @@ static int ps3_open_hv_device_gpu(struct ps3_system_bus_device *dev)
result = lv1_gpu_open(0);
if (result) {
- pr_debug("%s:%d: lv1_gpu_open failed: %s\n", __func__,
+ pr_warn("%s:%d: lv1_gpu_open failed: %s\n", __func__,
__LINE__, ps3_result(result));
result = -EPERM;
}
diff --git a/drivers/ps3/ps3-vuart.c b/drivers/ps3/ps3-vuart.c
index e34ae6a442c7..6328abd51ffa 100644
--- a/drivers/ps3/ps3-vuart.c
+++ b/drivers/ps3/ps3-vuart.c
@@ -358,7 +358,7 @@ static int ps3_vuart_raw_write(struct ps3_system_bus_device *dev,
ps3_mm_phys_to_lpar(__pa(buf)), bytes, bytes_written);
if (result) {
- dev_dbg(&dev->core, "%s:%d: lv1_write_virtual_uart failed: "
+ dev_warn(&dev->core, "%s:%d: lv1_write_virtual_uart failed: "
"%s\n", __func__, __LINE__, ps3_result(result));
return result;
}
diff --git a/drivers/ps3/ps3av.c b/drivers/ps3/ps3av.c
index 9d66257e1da5..516e6d14d32e 100644
--- a/drivers/ps3/ps3av.c
+++ b/drivers/ps3/ps3av.c
@@ -217,9 +217,9 @@ static int ps3av_send_cmd_pkt(const struct ps3av_send_hdr *send_buf,
/* send pkt */
res = ps3av_vuart_write(ps3av->dev, send_buf, write_len);
if (res < 0) {
- dev_dbg(&ps3av->dev->core,
- "%s: ps3av_vuart_write() failed (result=%d)\n",
- __func__, res);
+ dev_warn(&ps3av->dev->core,
+ "%s:%d: ps3av_vuart_write() failed: %s\n", __func__,
+ __LINE__, ps3_result(res));
return res;
}
@@ -230,9 +230,9 @@ static int ps3av_send_cmd_pkt(const struct ps3av_send_hdr *send_buf,
res = ps3av_vuart_read(ps3av->dev, recv_buf, PS3AV_HDR_SIZE,
timeout);
if (res != PS3AV_HDR_SIZE) {
- dev_dbg(&ps3av->dev->core,
- "%s: ps3av_vuart_read() failed (result=%d)\n",
- __func__, res);
+ dev_warn(&ps3av->dev->core,
+ "%s:%d: ps3av_vuart_read() failed: %s\n", __func__,
+ __LINE__, ps3_result(res));
return res;
}
@@ -240,9 +240,9 @@ static int ps3av_send_cmd_pkt(const struct ps3av_send_hdr *send_buf,
res = ps3av_vuart_read(ps3av->dev, &recv_buf->cid,
recv_buf->size, timeout);
if (res < 0) {
- dev_dbg(&ps3av->dev->core,
- "%s: ps3av_vuart_read() failed (result=%d)\n",
- __func__, res);
+ dev_warn(&ps3av->dev->core,
+ "%s:%d: ps3av_vuart_read() failed: %s\n", __func__,
+ __LINE__, ps3_result(res));
return res;
}
res += PS3AV_HDR_SIZE; /* total len */
@@ -251,8 +251,8 @@ static int ps3av_send_cmd_pkt(const struct ps3av_send_hdr *send_buf,
} while (event);
if ((cmd | PS3AV_REPLY_BIT) != recv_buf->cid) {
- dev_dbg(&ps3av->dev->core, "%s: reply err (result=%x)\n",
- __func__, recv_buf->cid);
+ dev_warn(&ps3av->dev->core, "%s:%d: reply err: %x\n", __func__,
+ __LINE__, recv_buf->cid);
return -EINVAL;
}
--
2.25.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v2 3/3] powerpc/ps3: Add dma_mask to ps3_dma_region
2021-06-03 19:16 [PATCH v2 0/3] DMA fixes for PS3 device drivers Geoff Levand
2021-06-03 19:17 ` [PATCH v2 2/3] powerpc/ps3: Warn on PS3 device errors Geoff Levand
2021-06-03 19:17 ` [PATCH v2 1/3] powerpc/ps3: Add CONFIG_PS3_VERBOSE_RESULT option Geoff Levand
@ 2021-06-03 19:17 ` Geoff Levand
2021-06-18 3:51 ` Michael Ellerman
3 siblings, 0 replies; 6+ messages in thread
From: Geoff Levand @ 2021-06-03 19:17 UTC (permalink / raw)
To: Michael Ellerman; +Cc: Jakub Kicinski, linuxppc-dev, David S. Miller, netdev
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dma_region structure and set
the device structure's dma_mask pointer to point to this new variable.
Fixes runtime errors like these:
ps3_system_bus_match:349: dev=8.0(sb_01), drv=8.0(ps3flash): match
WARNING: CPU: 0 PID: 1 at kernel/dma/mapping.c:151 .dma_map_page_attrs+0x34/0x1e0
ps3flash sb_01: ps3stor_setup:193: map DMA region failed
Signed-off-by: Geoff Levand <geoff@infradead.org>
---
arch/powerpc/include/asm/ps3.h | 2 ++
arch/powerpc/platforms/ps3/mm.c | 12 ++++++++++++
2 files changed, 14 insertions(+)
diff --git a/arch/powerpc/include/asm/ps3.h b/arch/powerpc/include/asm/ps3.h
index 7df145901def..8a0d8fb35328 100644
--- a/arch/powerpc/include/asm/ps3.h
+++ b/arch/powerpc/include/asm/ps3.h
@@ -71,6 +71,7 @@ struct ps3_dma_region_ops;
* @bus_addr: The 'translated' bus address of the region.
* @len: The length in bytes of the region.
* @offset: The offset from the start of memory of the region.
+ * @dma_mask: Device dma_mask.
* @ioid: The IOID of the device who owns this region
* @chunk_list: Opaque variable used by the ioc page manager.
* @region_ops: struct ps3_dma_region_ops - dma region operations
@@ -85,6 +86,7 @@ struct ps3_dma_region {
enum ps3_dma_region_type region_type;
unsigned long len;
unsigned long offset;
+ u64 dma_mask;
/* driver variables (set by ps3_dma_region_create) */
unsigned long bus_addr;
diff --git a/arch/powerpc/platforms/ps3/mm.c b/arch/powerpc/platforms/ps3/mm.c
index d094321964fb..a81eac35d900 100644
--- a/arch/powerpc/platforms/ps3/mm.c
+++ b/arch/powerpc/platforms/ps3/mm.c
@@ -6,6 +6,7 @@
* Copyright 2006 Sony Corp.
*/
+#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/memblock.h>
@@ -1118,6 +1119,7 @@ int ps3_dma_region_init(struct ps3_system_bus_device *dev,
enum ps3_dma_region_type region_type, void *addr, unsigned long len)
{
unsigned long lpar_addr;
+ int result;
lpar_addr = addr ? ps3_mm_phys_to_lpar(__pa(addr)) : 0;
@@ -1129,6 +1131,16 @@ int ps3_dma_region_init(struct ps3_system_bus_device *dev,
r->offset -= map.r1.offset;
r->len = len ? len : ALIGN(map.total, 1 << r->page_size);
+ dev->core.dma_mask = &r->dma_mask;
+
+ result = dma_set_mask_and_coherent(&dev->core, DMA_BIT_MASK(32));
+
+ if (result < 0) {
+ dev_err(&dev->core, "%s:%d: dma_set_mask_and_coherent failed: %d\n",
+ __func__, __LINE__, result);
+ return result;
+ }
+
switch (dev->dev_type) {
case PS3_DEVICE_TYPE_SB:
r->region_ops = (USE_DYNAMIC_DMA)
--
2.25.1
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