* [PATCH 1/2] remoteproc: qcom_q6v5_mss: Replace ioremap with memremap
@ 2020-11-04 7:03 Sibi Sankar
2020-11-04 7:03 ` [PATCH 2/2] remoteproc: qcom_q6v5_mss: map/unmap MBA region before/after use Sibi Sankar
2020-11-18 17:58 ` [PATCH 1/2] remoteproc: qcom_q6v5_mss: Replace ioremap with memremap Bjorn Andersson
0 siblings, 2 replies; 4+ messages in thread
From: Sibi Sankar @ 2020-11-04 7:03 UTC (permalink / raw)
To: bjorn.andersson
Cc: ohad, linux-arm-msm, linux-remoteproc, linux-kernel, agross,
evgreen, Sibi Sankar
Fix the sparse warnings reported by the kernel test bot by replacing
ioremap calls with memremap.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---
I'll send out the patches to convert ioremap to memremap on other
qc remoteproc drivers once I get a chance to test them.
drivers/remoteproc/qcom_q6v5_mss.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index 9a473cfef758..2c866b6da23c 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -1194,7 +1194,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
goto release_firmware;
}
- ptr = ioremap_wc(qproc->mpss_phys + offset, phdr->p_memsz);
+ ptr = memremap(qproc->mpss_phys + offset, phdr->p_memsz, MEMREMAP_WC);
if (!ptr) {
dev_err(qproc->dev,
"unable to map memory region: %pa+%zx-%x\n",
@@ -1209,7 +1209,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
"failed to load segment %d from truncated file %s\n",
i, fw_name);
ret = -EINVAL;
- iounmap(ptr);
+ memunmap(ptr);
goto release_firmware;
}
@@ -1221,7 +1221,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
ptr, phdr->p_filesz);
if (ret) {
dev_err(qproc->dev, "failed to load %s\n", fw_name);
- iounmap(ptr);
+ memunmap(ptr);
goto release_firmware;
}
@@ -1232,7 +1232,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
memset(ptr + phdr->p_filesz, 0,
phdr->p_memsz - phdr->p_filesz);
}
- iounmap(ptr);
+ memunmap(ptr);
size += phdr->p_memsz;
code_length = readl(qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG);
@@ -1299,11 +1299,11 @@ static void qcom_q6v5_dump_segment(struct rproc *rproc,
}
if (!ret)
- ptr = ioremap_wc(qproc->mpss_phys + offset + cp_offset, size);
+ ptr = memremap(qproc->mpss_phys + offset + cp_offset, size, MEMREMAP_WC);
if (ptr) {
memcpy(dest, ptr, size);
- iounmap(ptr);
+ memunmap(ptr);
} else {
memset(dest, 0xff, size);
}
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 2/2] remoteproc: qcom_q6v5_mss: map/unmap MBA region before/after use
2020-11-04 7:03 [PATCH 1/2] remoteproc: qcom_q6v5_mss: Replace ioremap with memremap Sibi Sankar
@ 2020-11-04 7:03 ` Sibi Sankar
2020-11-24 16:22 ` Bjorn Andersson
2020-11-18 17:58 ` [PATCH 1/2] remoteproc: qcom_q6v5_mss: Replace ioremap with memremap Bjorn Andersson
1 sibling, 1 reply; 4+ messages in thread
From: Sibi Sankar @ 2020-11-04 7:03 UTC (permalink / raw)
To: bjorn.andersson
Cc: ohad, linux-arm-msm, linux-remoteproc, linux-kernel, agross,
evgreen, Sibi Sankar
The application processor accessing the MBA region after assigning it to
the remote Q6 would lead to an XPU violation. Fix this by un-mapping the
MBA region post firmware copy and MBA text log dumps.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---
drivers/remoteproc/qcom_q6v5_mss.c | 37 ++++++++++++++++++++++---------------
1 file changed, 22 insertions(+), 15 deletions(-)
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index 2c866b6da23c..1b4a34325788 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -189,7 +189,6 @@ struct q6v5 {
size_t total_dump_size;
phys_addr_t mba_phys;
- void *mba_region;
size_t mba_size;
size_t dp_size;
@@ -408,7 +407,7 @@ static int q6v5_xfer_mem_ownership(struct q6v5 *qproc, int *current_perm,
current_perm, next, perms);
}
-static void q6v5_debug_policy_load(struct q6v5 *qproc)
+static void q6v5_debug_policy_load(struct q6v5 *qproc, void *ptr)
{
const struct firmware *dp_fw;
@@ -416,7 +415,7 @@ static void q6v5_debug_policy_load(struct q6v5 *qproc)
return;
if (SZ_1M + dp_fw->size <= qproc->mba_size) {
- memcpy(qproc->mba_region + SZ_1M, dp_fw->data, dp_fw->size);
+ memcpy(ptr + SZ_1M, dp_fw->data, dp_fw->size);
qproc->dp_size = dp_fw->size;
}
@@ -426,6 +425,7 @@ static void q6v5_debug_policy_load(struct q6v5 *qproc)
static int q6v5_load(struct rproc *rproc, const struct firmware *fw)
{
struct q6v5 *qproc = rproc->priv;
+ void *ptr;
/* MBA is restricted to a maximum size of 1M */
if (fw->size > qproc->mba_size || fw->size > SZ_1M) {
@@ -433,8 +433,16 @@ static int q6v5_load(struct rproc *rproc, const struct firmware *fw)
return -EINVAL;
}
- memcpy(qproc->mba_region, fw->data, fw->size);
- q6v5_debug_policy_load(qproc);
+ ptr = memremap(qproc->mba_phys, qproc->mba_size, MEMREMAP_WC);
+ if (!ptr) {
+ dev_err(qproc->dev, "unable to map memory region: %pa+%zx\n",
+ &qproc->mba_phys, qproc->mba_size);
+ return -EBUSY;
+ }
+
+ memcpy(ptr, fw->data, fw->size);
+ q6v5_debug_policy_load(qproc, ptr);
+ memunmap(ptr);
return 0;
}
@@ -541,6 +549,7 @@ static void q6v5_dump_mba_logs(struct q6v5 *qproc)
{
struct rproc *rproc = qproc->rproc;
void *data;
+ void *ptr;
if (!qproc->has_mba_logs)
return;
@@ -549,12 +558,16 @@ static void q6v5_dump_mba_logs(struct q6v5 *qproc)
qproc->mba_size))
return;
- data = vmalloc(MBA_LOG_SIZE);
- if (!data)
+ ptr = memremap(qproc->mba_phys, qproc->mba_size, MEMREMAP_WC);
+ if (!ptr)
return;
- memcpy(data, qproc->mba_region, MBA_LOG_SIZE);
- dev_coredumpv(&rproc->dev, data, MBA_LOG_SIZE, GFP_KERNEL);
+ data = vmalloc(MBA_LOG_SIZE);
+ if (data) {
+ memcpy(data, ptr, MBA_LOG_SIZE);
+ dev_coredumpv(&rproc->dev, data, MBA_LOG_SIZE, GFP_KERNEL);
+ }
+ memunmap(ptr);
}
static int q6v5proc_reset(struct q6v5 *qproc)
@@ -1605,12 +1618,6 @@ static int q6v5_alloc_memory_region(struct q6v5 *qproc)
qproc->mba_phys = r.start;
qproc->mba_size = resource_size(&r);
- qproc->mba_region = devm_ioremap_wc(qproc->dev, qproc->mba_phys, qproc->mba_size);
- if (!qproc->mba_region) {
- dev_err(qproc->dev, "unable to map memory region: %pa+%zx\n",
- &r.start, qproc->mba_size);
- return -EBUSY;
- }
if (!child) {
node = of_parse_phandle(qproc->dev->of_node,
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 1/2] remoteproc: qcom_q6v5_mss: Replace ioremap with memremap
2020-11-04 7:03 [PATCH 1/2] remoteproc: qcom_q6v5_mss: Replace ioremap with memremap Sibi Sankar
2020-11-04 7:03 ` [PATCH 2/2] remoteproc: qcom_q6v5_mss: map/unmap MBA region before/after use Sibi Sankar
@ 2020-11-18 17:58 ` Bjorn Andersson
1 sibling, 0 replies; 4+ messages in thread
From: Bjorn Andersson @ 2020-11-18 17:58 UTC (permalink / raw)
To: Sibi Sankar
Cc: ohad, linux-arm-msm, linux-remoteproc, linux-kernel, agross, evgreen
On Wed 04 Nov 01:03 CST 2020, Sibi Sankar wrote:
> Fix the sparse warnings reported by the kernel test bot by replacing
> ioremap calls with memremap.
>
> Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Regards,
Bjorn
> Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
> ---
>
> I'll send out the patches to convert ioremap to memremap on other
> qc remoteproc drivers once I get a chance to test them.
>
> drivers/remoteproc/qcom_q6v5_mss.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
> index 9a473cfef758..2c866b6da23c 100644
> --- a/drivers/remoteproc/qcom_q6v5_mss.c
> +++ b/drivers/remoteproc/qcom_q6v5_mss.c
> @@ -1194,7 +1194,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
> goto release_firmware;
> }
>
> - ptr = ioremap_wc(qproc->mpss_phys + offset, phdr->p_memsz);
> + ptr = memremap(qproc->mpss_phys + offset, phdr->p_memsz, MEMREMAP_WC);
> if (!ptr) {
> dev_err(qproc->dev,
> "unable to map memory region: %pa+%zx-%x\n",
> @@ -1209,7 +1209,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
> "failed to load segment %d from truncated file %s\n",
> i, fw_name);
> ret = -EINVAL;
> - iounmap(ptr);
> + memunmap(ptr);
> goto release_firmware;
> }
>
> @@ -1221,7 +1221,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
> ptr, phdr->p_filesz);
> if (ret) {
> dev_err(qproc->dev, "failed to load %s\n", fw_name);
> - iounmap(ptr);
> + memunmap(ptr);
> goto release_firmware;
> }
>
> @@ -1232,7 +1232,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
> memset(ptr + phdr->p_filesz, 0,
> phdr->p_memsz - phdr->p_filesz);
> }
> - iounmap(ptr);
> + memunmap(ptr);
> size += phdr->p_memsz;
>
> code_length = readl(qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG);
> @@ -1299,11 +1299,11 @@ static void qcom_q6v5_dump_segment(struct rproc *rproc,
> }
>
> if (!ret)
> - ptr = ioremap_wc(qproc->mpss_phys + offset + cp_offset, size);
> + ptr = memremap(qproc->mpss_phys + offset + cp_offset, size, MEMREMAP_WC);
>
> if (ptr) {
> memcpy(dest, ptr, size);
> - iounmap(ptr);
> + memunmap(ptr);
> } else {
> memset(dest, 0xff, size);
> }
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 2/2] remoteproc: qcom_q6v5_mss: map/unmap MBA region before/after use
2020-11-04 7:03 ` [PATCH 2/2] remoteproc: qcom_q6v5_mss: map/unmap MBA region before/after use Sibi Sankar
@ 2020-11-24 16:22 ` Bjorn Andersson
0 siblings, 0 replies; 4+ messages in thread
From: Bjorn Andersson @ 2020-11-24 16:22 UTC (permalink / raw)
To: Sibi Sankar
Cc: ohad, linux-arm-msm, linux-remoteproc, linux-kernel, agross, evgreen
On Wed 04 Nov 01:03 CST 2020, Sibi Sankar wrote:
> The application processor accessing the MBA region after assigning it to
> the remote Q6 would lead to an XPU violation. Fix this by un-mapping the
> MBA region post firmware copy and MBA text log dumps.
>
> Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
I renamed "ptr" to "mba_region" throughout the patch and applied the
pair.
Thanks,
Bjorn
> ---
> drivers/remoteproc/qcom_q6v5_mss.c | 37 ++++++++++++++++++++++---------------
> 1 file changed, 22 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
> index 2c866b6da23c..1b4a34325788 100644
> --- a/drivers/remoteproc/qcom_q6v5_mss.c
> +++ b/drivers/remoteproc/qcom_q6v5_mss.c
> @@ -189,7 +189,6 @@ struct q6v5 {
> size_t total_dump_size;
>
> phys_addr_t mba_phys;
> - void *mba_region;
> size_t mba_size;
> size_t dp_size;
>
> @@ -408,7 +407,7 @@ static int q6v5_xfer_mem_ownership(struct q6v5 *qproc, int *current_perm,
> current_perm, next, perms);
> }
>
> -static void q6v5_debug_policy_load(struct q6v5 *qproc)
> +static void q6v5_debug_policy_load(struct q6v5 *qproc, void *ptr)
> {
> const struct firmware *dp_fw;
>
> @@ -416,7 +415,7 @@ static void q6v5_debug_policy_load(struct q6v5 *qproc)
> return;
>
> if (SZ_1M + dp_fw->size <= qproc->mba_size) {
> - memcpy(qproc->mba_region + SZ_1M, dp_fw->data, dp_fw->size);
> + memcpy(ptr + SZ_1M, dp_fw->data, dp_fw->size);
> qproc->dp_size = dp_fw->size;
> }
>
> @@ -426,6 +425,7 @@ static void q6v5_debug_policy_load(struct q6v5 *qproc)
> static int q6v5_load(struct rproc *rproc, const struct firmware *fw)
> {
> struct q6v5 *qproc = rproc->priv;
> + void *ptr;
>
> /* MBA is restricted to a maximum size of 1M */
> if (fw->size > qproc->mba_size || fw->size > SZ_1M) {
> @@ -433,8 +433,16 @@ static int q6v5_load(struct rproc *rproc, const struct firmware *fw)
> return -EINVAL;
> }
>
> - memcpy(qproc->mba_region, fw->data, fw->size);
> - q6v5_debug_policy_load(qproc);
> + ptr = memremap(qproc->mba_phys, qproc->mba_size, MEMREMAP_WC);
> + if (!ptr) {
> + dev_err(qproc->dev, "unable to map memory region: %pa+%zx\n",
> + &qproc->mba_phys, qproc->mba_size);
> + return -EBUSY;
> + }
> +
> + memcpy(ptr, fw->data, fw->size);
> + q6v5_debug_policy_load(qproc, ptr);
> + memunmap(ptr);
>
> return 0;
> }
> @@ -541,6 +549,7 @@ static void q6v5_dump_mba_logs(struct q6v5 *qproc)
> {
> struct rproc *rproc = qproc->rproc;
> void *data;
> + void *ptr;
>
> if (!qproc->has_mba_logs)
> return;
> @@ -549,12 +558,16 @@ static void q6v5_dump_mba_logs(struct q6v5 *qproc)
> qproc->mba_size))
> return;
>
> - data = vmalloc(MBA_LOG_SIZE);
> - if (!data)
> + ptr = memremap(qproc->mba_phys, qproc->mba_size, MEMREMAP_WC);
> + if (!ptr)
> return;
>
> - memcpy(data, qproc->mba_region, MBA_LOG_SIZE);
> - dev_coredumpv(&rproc->dev, data, MBA_LOG_SIZE, GFP_KERNEL);
> + data = vmalloc(MBA_LOG_SIZE);
> + if (data) {
> + memcpy(data, ptr, MBA_LOG_SIZE);
> + dev_coredumpv(&rproc->dev, data, MBA_LOG_SIZE, GFP_KERNEL);
> + }
> + memunmap(ptr);
> }
>
> static int q6v5proc_reset(struct q6v5 *qproc)
> @@ -1605,12 +1618,6 @@ static int q6v5_alloc_memory_region(struct q6v5 *qproc)
>
> qproc->mba_phys = r.start;
> qproc->mba_size = resource_size(&r);
> - qproc->mba_region = devm_ioremap_wc(qproc->dev, qproc->mba_phys, qproc->mba_size);
> - if (!qproc->mba_region) {
> - dev_err(qproc->dev, "unable to map memory region: %pa+%zx\n",
> - &r.start, qproc->mba_size);
> - return -EBUSY;
> - }
>
> if (!child) {
> node = of_parse_phandle(qproc->dev->of_node,
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-11-24 16:22 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2020-11-04 7:03 [PATCH 1/2] remoteproc: qcom_q6v5_mss: Replace ioremap with memremap Sibi Sankar
2020-11-04 7:03 ` [PATCH 2/2] remoteproc: qcom_q6v5_mss: map/unmap MBA region before/after use Sibi Sankar
2020-11-24 16:22 ` Bjorn Andersson
2020-11-18 17:58 ` [PATCH 1/2] remoteproc: qcom_q6v5_mss: Replace ioremap with memremap Bjorn Andersson
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