[PATCH V12 04/10] remoteproc: add is_iomem to da_to_va

peng.fan
2021-02-18T01:38:59Z

Introduce an extra parameter is_iomem to da_to_va, then the caller
could take the memory as normal memory or io mapped memory.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
drivers/remoteproc/imx_rproc.c | 2 +-
drivers/remoteproc/ingenic_rproc.c | 2 +-
drivers/remoteproc/keystone_remoteproc.c | 2 +-
drivers/remoteproc/mtk_scp.c | 6 +++---
drivers/remoteproc/omap_remoteproc.c | 2 +-
drivers/remoteproc/pru_rproc.c | 2 +-
drivers/remoteproc/qcom_q6v5_adsp.c | 2 +-
drivers/remoteproc/qcom_q6v5_pas.c | 2 +-
drivers/remoteproc/qcom_q6v5_wcss.c | 2 +-
drivers/remoteproc/qcom_wcnss.c | 2 +-
drivers/remoteproc/remoteproc_core.c | 7 +++++--
drivers/remoteproc/remoteproc_coredump.c | 8 ++++++--
drivers/remoteproc/remoteproc_debugfs.c | 2 +-
drivers/remoteproc/remoteproc_elf_loader.c | 21 +++++++++++++++------
drivers/remoteproc/remoteproc_internal.h | 2 +-
drivers/remoteproc/st_slim_rproc.c | 2 +-
drivers/remoteproc/ti_k3_dsp_remoteproc.c | 2 +-
drivers/remoteproc/ti_k3_r5_remoteproc.c | 2 +-
drivers/remoteproc/wkup_m3_rproc.c | 2 +-
include/linux/remoteproc.h | 2 +-
20 files changed, 45 insertions(+), 29 deletions(-)

diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index 8957ed271d20..6603e00bb6f4 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -208,7 +208,7 @@ static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da,
return -ENOENT;
}

-static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct imx_rproc *priv = rproc->priv;
void *va = NULL;
diff --git a/drivers/remoteproc/ingenic_rproc.c b/drivers/remoteproc/ingenic_rproc.c
index e2618c36eaab..a356738160a4 100644
--- a/drivers/remoteproc/ingenic_rproc.c
+++ b/drivers/remoteproc/ingenic_rproc.c
@@ -121,7 +121,7 @@ static void ingenic_rproc_kick(struct rproc *rproc, int vqid)
writel(vqid, vpu->aux_base + REG_CORE_MSG);
}

-static void *ingenic_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *ingenic_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct vpu *vpu = rproc->priv;
void __iomem *va = NULL;
diff --git a/drivers/remoteproc/keystone_remoteproc.c b/drivers/remoteproc/keystone_remoteproc.c
index cd266163a65f..54781f553f4e 100644
--- a/drivers/remoteproc/keystone_remoteproc.c
+++ b/drivers/remoteproc/keystone_remoteproc.c
@@ -246,7 +246,7 @@ static void keystone_rproc_kick(struct rproc *rproc, int vqid)
* can be used either by the remoteproc core for loading (when using kernel
* remoteproc loader), or by any rpmsg bus drivers.
*/
-static void *keystone_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *keystone_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct keystone_rproc *ksproc = rproc->priv;
void __iomem *va = NULL;
diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index ce727598c41c..9679cc26895e 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -272,7 +272,7 @@ static int scp_elf_load_segments(struct rproc *rproc, const struct firmware *fw)
}

/* grab the kernel address for this device address */
- ptr = (void __iomem *)rproc_da_to_va(rproc, da, memsz);
+ ptr = (void __iomem *)rproc_da_to_va(rproc, da, memsz, NULL);
if (!ptr) {
dev_err(dev, "bad phdr da 0x%x mem 0x%x\n", da, memsz);
ret = -EINVAL;
@@ -509,7 +509,7 @@ static void *mt8192_scp_da_to_va(struct mtk_scp *scp, u64 da, size_t len)
return NULL;
}

-static void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct mtk_scp *scp = (struct mtk_scp *)rproc->priv;

@@ -627,7 +627,7 @@ void *scp_mapping_dm_addr(struct mtk_scp *scp, u32 mem_addr)
{
void *ptr;

- ptr = scp_da_to_va(scp->rproc, mem_addr, 0);
+ ptr = scp_da_to_va(scp->rproc, mem_addr, 0, NULL);
if (!ptr)
return ERR_PTR(-EINVAL);

diff --git a/drivers/remoteproc/omap_remoteproc.c b/drivers/remoteproc/omap_remoteproc.c
index d94b7391bf9d..43531caa1959 100644
--- a/drivers/remoteproc/omap_remoteproc.c
+++ b/drivers/remoteproc/omap_remoteproc.c
@@ -728,7 +728,7 @@ static int omap_rproc_stop(struct rproc *rproc)
* Return: translated virtual address in kernel memory space on success,
* or NULL on failure.
*/
-static void *omap_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *omap_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct omap_rproc *oproc = rproc->priv;
int i;
diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c
index 5fad787ba012..8df99318f18a 100644
--- a/drivers/remoteproc/pru_rproc.c
+++ b/drivers/remoteproc/pru_rproc.c
@@ -483,7 +483,7 @@ static void *pru_i_da_to_va(struct pru_rproc *pru, u32 da, size_t len)
* core for any PRU client drivers. The PRU Instruction RAM access is restricted
* only to the PRU loader code.
*/
-static void *pru_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *pru_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct pru_rproc *pru = rproc->priv;

diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c b/drivers/remoteproc/qcom_q6v5_adsp.c
index e02450225e4a..8b0d8bbacd2e 100644
--- a/drivers/remoteproc/qcom_q6v5_adsp.c
+++ b/drivers/remoteproc/qcom_q6v5_adsp.c
@@ -281,7 +281,7 @@ static int adsp_stop(struct rproc *rproc)
return ret;
}

-static void *adsp_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *adsp_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
int offset;
diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
index ee586226e438..333a1e389fcd 100644
--- a/drivers/remoteproc/qcom_q6v5_pas.c
+++ b/drivers/remoteproc/qcom_q6v5_pas.c
@@ -242,7 +242,7 @@ static int adsp_stop(struct rproc *rproc)
return ret;
}

-static void *adsp_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *adsp_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
int offset;
diff --git a/drivers/remoteproc/qcom_q6v5_wcss.c b/drivers/remoteproc/qcom_q6v5_wcss.c
index 78ebe1168b33..704cd63c9af4 100644
--- a/drivers/remoteproc/qcom_q6v5_wcss.c
+++ b/drivers/remoteproc/qcom_q6v5_wcss.c
@@ -410,7 +410,7 @@ static int q6v5_wcss_stop(struct rproc *rproc)
return 0;
}

-static void *q6v5_wcss_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *q6v5_wcss_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct q6v5_wcss *wcss = rproc->priv;
int offset;
diff --git a/drivers/remoteproc/qcom_wcnss.c b/drivers/remoteproc/qcom_wcnss.c
index 2a6a23cb14ca..3a131163064c 100644
--- a/drivers/remoteproc/qcom_wcnss.c
+++ b/drivers/remoteproc/qcom_wcnss.c
@@ -320,7 +320,7 @@ static int wcnss_stop(struct rproc *rproc)
return ret;
}

-static void *wcnss_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *wcnss_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
int offset;
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index ab150765d124..a1df4d7e5323 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -189,13 +189,13 @@ EXPORT_SYMBOL(rproc_va_to_pa);
* here the output of the DMA API for the carveouts, which should be more
* correct.
*/
-void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct rproc_mem_entry *carveout;
void *ptr = NULL;

if (rproc->ops->da_to_va) {
- ptr = rproc->ops->da_to_va(rproc, da, len);
+ ptr = rproc->ops->da_to_va(rproc, da, len, is_iomem);
if (ptr)
goto out;
}
@@ -217,6 +217,9 @@ void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)

ptr = carveout->va + offset;

+ if (is_iomem)
+ *is_iomem = carveout->is_iomem;
+
break;
}

diff --git a/drivers/remoteproc/remoteproc_coredump.c b/drivers/remoteproc/remoteproc_coredump.c
index 81ec154a6a5e..aee657cc08c6 100644
--- a/drivers/remoteproc/remoteproc_coredump.c
+++ b/drivers/remoteproc/remoteproc_coredump.c
@@ -153,18 +153,22 @@ static void rproc_copy_segment(struct rproc *rproc, void *dest,
size_t offset, size_t size)
{
void *ptr;
+ bool is_iomem;

if (segment->dump) {
segment->dump(rproc, segment, dest, offset, size);
} else {
- ptr = rproc_da_to_va(rproc, segment->da + offset, size);
+ ptr = rproc_da_to_va(rproc, segment->da + offset, size, &is_iomem);
if (!ptr) {
dev_err(&rproc->dev,
"invalid copy request for segment %pad with offset %zu and size %zu)\n",
&segment->da, offset, size);
memset(dest, 0xff, size);
} else {
- memcpy(dest, ptr, size);
+ if (is_iomem)
+ memcpy_fromio(dest, ptr, size);
+ else
+ memcpy(dest, ptr, size);
}
}
}
diff --git a/drivers/remoteproc/remoteproc_debugfs.c b/drivers/remoteproc/remoteproc_debugfs.c
index 7e5845376e9f..b5a1e3b697d9 100644
--- a/drivers/remoteproc/remoteproc_debugfs.c
+++ b/drivers/remoteproc/remoteproc_debugfs.c
@@ -132,7 +132,7 @@ static ssize_t rproc_trace_read(struct file *filp, char __user *userbuf,
char buf[100];
int len;

- va = rproc_da_to_va(data->rproc, trace->da, trace->len);
+ va = rproc_da_to_va(data->rproc, trace->da, trace->len, NULL);

if (!va) {
len = scnprintf(buf, sizeof(buf), "Trace %s not available\n",
diff --git a/drivers/remoteproc/remoteproc_elf_loader.c b/drivers/remoteproc/remoteproc_elf_loader.c
index df68d87752e4..11423588965a 100644
--- a/drivers/remoteproc/remoteproc_elf_loader.c
+++ b/drivers/remoteproc/remoteproc_elf_loader.c
@@ -175,6 +175,7 @@ int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw)
u64 offset = elf_phdr_get_p_offset(class, phdr);
u32 type = elf_phdr_get_p_type(class, phdr);
void *ptr;
+ bool is_iomem;

if (type != PT_LOAD)
continue;
@@ -204,7 +205,7 @@ int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw)
}

/* grab the kernel address for this device address */
- ptr = rproc_da_to_va(rproc, da, memsz);
+ ptr = rproc_da_to_va(rproc, da, memsz, &is_iomem);
if (!ptr) {
dev_err(dev, "bad phdr da 0x%llx mem 0x%llx\n", da,
memsz);
@@ -213,8 +214,12 @@ int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw)
}

/* put the segment where the remote processor expects it */
- if (filesz)
- memcpy(ptr, elf_data + offset, filesz);
+ if (filesz) {
+ if (is_iomem)
+ memcpy_fromio(ptr, (void __iomem *)(elf_data + offset), filesz);
+ else
+ memcpy(ptr, elf_data + offset, filesz);
+ }

/*
* Zero out remaining memory for this segment.
@@ -223,8 +228,12 @@ int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw)
* did this for us. albeit harmless, we may consider removing
* this.
*/
- if (memsz > filesz)
- memset(ptr + filesz, 0, memsz - filesz);
+ if (memsz > filesz) {
+ if (is_iomem)
+ memset_io((void __iomem *)(ptr + filesz), 0, memsz - filesz);
+ else
+ memset(ptr + filesz, 0, memsz - filesz);
+ }
}

return ret;
@@ -377,6 +386,6 @@ struct resource_table *rproc_elf_find_loaded_rsc_table(struct rproc *rproc,
return NULL;
}

- return rproc_da_to_va(rproc, sh_addr, sh_size);
+ return rproc_da_to_va(rproc, sh_addr, sh_size, NULL);
}
EXPORT_SYMBOL(rproc_elf_find_loaded_rsc_table);
diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h
index c34002888d2c..9ea37aa687d2 100644
--- a/drivers/remoteproc/remoteproc_internal.h
+++ b/drivers/remoteproc/remoteproc_internal.h
@@ -84,7 +84,7 @@ static inline void rproc_char_device_remove(struct rproc *rproc)
void rproc_free_vring(struct rproc_vring *rvring);
int rproc_alloc_vring(struct rproc_vdev *rvdev, int i);

-void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len);
+void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem);
phys_addr_t rproc_va_to_pa(void *cpu_addr);
int rproc_trigger_recovery(struct rproc *rproc);

diff --git a/drivers/remoteproc/st_slim_rproc.c b/drivers/remoteproc/st_slim_rproc.c
index 09bcb4d8b9e0..22096adc1ad3 100644
--- a/drivers/remoteproc/st_slim_rproc.c
+++ b/drivers/remoteproc/st_slim_rproc.c
@@ -174,7 +174,7 @@ static int slim_rproc_stop(struct rproc *rproc)
return 0;
}

-static void *slim_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *slim_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct st_slim_rproc *slim_rproc = rproc->priv;
void *va = NULL;
diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
index 863c0214e0a8..fd4eb67a6681 100644
--- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
@@ -354,7 +354,7 @@ static int k3_dsp_rproc_stop(struct rproc *rproc)
* can be used either by the remoteproc core for loading (when using kernel
* remoteproc loader), or by any rpmsg bus drivers.
*/
-static void *k3_dsp_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *k3_dsp_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct k3_dsp_rproc *kproc = rproc->priv;
void __iomem *va = NULL;
diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c
index 62b5a4c29456..5cf8d030a1f0 100644
--- a/drivers/remoteproc/ti_k3_r5_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c
@@ -590,7 +590,7 @@ static int k3_r5_rproc_stop(struct rproc *rproc)
* present in a DSP or IPU device). The translated addresses can be used
* either by the remoteproc core for loading, or by any rpmsg bus drivers.
*/
-static void *k3_r5_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *k3_r5_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct k3_r5_rproc *kproc = rproc->priv;
struct k3_r5_core *core = kproc->core;
diff --git a/drivers/remoteproc/wkup_m3_rproc.c b/drivers/remoteproc/wkup_m3_rproc.c
index 92d387dfc03b..484f7605823e 100644
--- a/drivers/remoteproc/wkup_m3_rproc.c
+++ b/drivers/remoteproc/wkup_m3_rproc.c
@@ -89,7 +89,7 @@ static int wkup_m3_rproc_stop(struct rproc *rproc)
return error;
}

-static void *wkup_m3_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
+static void *wkup_m3_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct wkup_m3_rproc *wkupm3 = rproc->priv;
void *va = NULL;
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index a5f6d2d9cde2..1b7d56c7a453 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -386,7 +386,7 @@ struct rproc_ops {
int (*stop)(struct rproc *rproc);
int (*attach)(struct rproc *rproc);
void (*kick)(struct rproc *rproc, int vqid);
- void * (*da_to_va)(struct rproc *rproc, u64 da, size_t len);
+ void * (*da_to_va)(struct rproc *rproc, u64 da, size_t len, bool *is_iomem);
int (*parse_fw)(struct rproc *rproc, const struct firmware *fw);
int (*handle_rsc)(struct rproc *rproc, u32 rsc_type, void *rsc,
int offset, int avail);
--
2.30.0