This is a note to let you know that I've just added the patch titled
remoteproc: imx_rproc: Fix TCM io memory type
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
remoteproc-imx_rproc-fix-tcm-io-memory-type.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a50bbd564ae3a0f86bd38b5e6eeec994dd48e861
Author: Dong Aisheng <aisheng.dong@xxxxxxx>
Date: Fri Sep 10 17:06:18 2021 +0800
remoteproc: imx_rproc: Fix TCM io memory type
[ Upstream commit 91bb26637353f35241f5472eedf3202ebe13e2e5 ]
is_iomem was introduced in the commit 40df0a91b2a5 ("remoteproc: add
is_iomem to da_to_va"), but the driver seemed missed to provide the io
type correctly.
This patch updates remoteproc driver to indicate the TCM on IMX are io
memories. Without the change, remoteproc kick will fail.
Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Cc: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Cc: Peng Fan <peng.fan@xxxxxxx>
Reviewed-and-tested-by: Peng Fan <peng.fan@xxxxxxx>
Fixes: 79806d32d5aa ("remoteproc: imx_rproc: support i.MX8MN/P")
Signed-off-by: Dong Aisheng <aisheng.dong@xxxxxxx>
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
stable <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210910090621.3073540-4-peng.fan@xxxxxxxxxxx
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index d88f76f5305eb..71dcc6dd32e40 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -71,6 +71,7 @@ struct imx_rproc_mem {
/* att flags */
/* M4 own area. Can be mapped at probe */
#define ATT_OWN BIT(1)
+#define ATT_IOMEM BIT(2)
/* address translation table */
struct imx_rproc_att {
@@ -117,7 +118,7 @@ struct imx_rproc {
static const struct imx_rproc_att imx_rproc_att_imx8mn[] = {
/* dev addr , sys addr , size , flags */
/* ITCM */
- { 0x00000000, 0x007E0000, 0x00020000, ATT_OWN },
+ { 0x00000000, 0x007E0000, 0x00020000, ATT_OWN | ATT_IOMEM },
/* OCRAM_S */
{ 0x00180000, 0x00180000, 0x00009000, 0 },
/* OCRAM */
@@ -131,7 +132,7 @@ static const struct imx_rproc_att imx_rproc_att_imx8mn[] = {
/* DDR (Code) - alias */
{ 0x10000000, 0x40000000, 0x0FFE0000, 0 },
/* DTCM */
- { 0x20000000, 0x00800000, 0x00020000, ATT_OWN },
+ { 0x20000000, 0x00800000, 0x00020000, ATT_OWN | ATT_IOMEM },
/* OCRAM_S - alias */
{ 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
/* OCRAM */
@@ -147,7 +148,7 @@ static const struct imx_rproc_att imx_rproc_att_imx8mn[] = {
static const struct imx_rproc_att imx_rproc_att_imx8mq[] = {
/* dev addr , sys addr , size , flags */
/* TCML - alias */
- { 0x00000000, 0x007e0000, 0x00020000, 0 },
+ { 0x00000000, 0x007e0000, 0x00020000, ATT_IOMEM},
/* OCRAM_S */
{ 0x00180000, 0x00180000, 0x00008000, 0 },
/* OCRAM */
@@ -159,9 +160,9 @@ static const struct imx_rproc_att imx_rproc_att_imx8mq[] = {
/* DDR (Code) - alias */
{ 0x10000000, 0x80000000, 0x0FFE0000, 0 },
/* TCML */
- { 0x1FFE0000, 0x007E0000, 0x00020000, ATT_OWN },
+ { 0x1FFE0000, 0x007E0000, 0x00020000, ATT_OWN | ATT_IOMEM},
/* TCMU */
- { 0x20000000, 0x00800000, 0x00020000, ATT_OWN },
+ { 0x20000000, 0x00800000, 0x00020000, ATT_OWN | ATT_IOMEM},
/* OCRAM_S */
{ 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
/* OCRAM */
@@ -199,12 +200,12 @@ static const struct imx_rproc_att imx_rproc_att_imx7d[] = {
/* OCRAM_PXP (Code) - alias */
{ 0x00940000, 0x00940000, 0x00008000, 0 },
/* TCML (Code) */
- { 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN },
+ { 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN | ATT_IOMEM },
/* DDR (Code) - alias, first part of DDR (Data) */
{ 0x10000000, 0x80000000, 0x0FFF0000, 0 },
/* TCMU (Data) */
- { 0x20000000, 0x00800000, 0x00008000, ATT_OWN },
+ { 0x20000000, 0x00800000, 0x00008000, ATT_OWN | ATT_IOMEM },
/* OCRAM (Data) */
{ 0x20200000, 0x00900000, 0x00020000, 0 },
/* OCRAM_EPDC (Data) */
@@ -218,18 +219,18 @@ static const struct imx_rproc_att imx_rproc_att_imx7d[] = {
static const struct imx_rproc_att imx_rproc_att_imx6sx[] = {
/* dev addr , sys addr , size , flags */
/* TCML (M4 Boot Code) - alias */
- { 0x00000000, 0x007F8000, 0x00008000, 0 },
+ { 0x00000000, 0x007F8000, 0x00008000, ATT_IOMEM },
/* OCRAM_S (Code) */
{ 0x00180000, 0x008F8000, 0x00004000, 0 },
/* OCRAM_S (Code) - alias */
{ 0x00180000, 0x008FC000, 0x00004000, 0 },
/* TCML (Code) */
- { 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN },
+ { 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN | ATT_IOMEM },
/* DDR (Code) - alias, first part of DDR (Data) */
{ 0x10000000, 0x80000000, 0x0FFF8000, 0 },
/* TCMU (Data) */
- { 0x20000000, 0x00800000, 0x00008000, ATT_OWN },
+ { 0x20000000, 0x00800000, 0x00008000, ATT_OWN | ATT_IOMEM },
/* OCRAM_S (Data) - alias? */
{ 0x208F8000, 0x008F8000, 0x00004000, 0 },
/* DDR (Data) */
@@ -341,7 +342,7 @@ static int imx_rproc_stop(struct rproc *rproc)
}
static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da,
- size_t len, u64 *sys)
+ size_t len, u64 *sys, bool *is_iomem)
{
const struct imx_rproc_dcfg *dcfg = priv->dcfg;
int i;
@@ -354,6 +355,8 @@ static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da,
unsigned int offset = da - att->da;
*sys = att->sa + offset;
+ if (is_iomem)
+ *is_iomem = att->flags & ATT_IOMEM;
return 0;
}
}
@@ -377,7 +380,7 @@ static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *i
* On device side we have many aliases, so we need to convert device
* address (M4) to system bus address first.
*/
- if (imx_rproc_da_to_sys(priv, da, len, &sys))
+ if (imx_rproc_da_to_sys(priv, da, len, &sys, is_iomem))
return NULL;
for (i = 0; i < IMX_RPROC_MEM_MAX; i++) {
@@ -553,8 +556,12 @@ static int imx_rproc_addr_init(struct imx_rproc *priv,
if (b >= IMX_RPROC_MEM_MAX)
break;
- priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev,
- att->sa, att->size);
+ if (att->flags & ATT_IOMEM)
+ priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev,
+ att->sa, att->size);
+ else
+ priv->mem[b].cpu_addr = devm_ioremap_wc(&pdev->dev,
+ att->sa, att->size);
if (!priv->mem[b].cpu_addr) {
dev_err(dev, "failed to remap %#x bytes from %#x\n", att->size, att->sa);
return -ENOMEM;
