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Message-ID: <20250103101231.1508151-17-b-padhi@ti.com>
Date: Fri, 3 Jan 2025 15:42:27 +0530
From: Beleswar Padhi <b-padhi@...com>
To: <andersson@...nel.org>, <mathieu.poirier@...aro.org>
CC: <afd@...com>, <hnagalla@...com>, <u-kumar1@...com>,
<p.zabel@...gutronix.de>, <jan.kiszka@...mens.com>,
<christophe.jaillet@...adoo.fr>, <jkangas@...hat.com>,
<eballetbo@...hat.com>, <b-padhi@...com>,
<linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v8 16/20] remoteproc: k3: Refactor .da_to_va rproc ops into common driver
The .da_to_va rproc ops implementations in ti_k3_dsp_remoteproc.c and
ti_k3_m4_remoteproc.c drivers return the Kernel virtual address for a
corresponding rproc device address. Refactor the implementations into
ti_k3_common.c driver as k3_rproc_da_to_va and align DSP and M4 drivers
to register this common function as .da_to_va ops.
Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
drivers/remoteproc/ti_k3_common.c | 61 ++++++++++++++++++++++
drivers/remoteproc/ti_k3_common.h | 4 ++
drivers/remoteproc/ti_k3_dsp_remoteproc.c | 63 +----------------------
drivers/remoteproc/ti_k3_m4_remoteproc.c | 58 +--------------------
4 files changed, 67 insertions(+), 119 deletions(-)
diff --git a/drivers/remoteproc/ti_k3_common.c b/drivers/remoteproc/ti_k3_common.c
index f56d2553a669..520f3fa44195 100644
--- a/drivers/remoteproc/ti_k3_common.c
+++ b/drivers/remoteproc/ti_k3_common.c
@@ -382,5 +382,66 @@ struct resource_table *k3_get_loaded_rsc_table(struct rproc *rproc,
}
EXPORT_SYMBOL_GPL(k3_get_loaded_rsc_table);
+/*
+ * Custom function to translate a remote processor device address (internal
+ * RAMs only) to a kernel virtual address. The remote processors can access
+ * their RAMs at either an internal address visible only from a remote
+ * processor, or at the SoC-level bus address. Both these addresses need to be
+ * looked through for translation. The translated addresses can be used either
+ * by the remoteproc core for loading (when using kernel remoteproc loader), or
+ * by any rpmsg bus drivers.
+ */
+void *k3_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
+{
+ struct k3_rproc *kproc = rproc->priv;
+ void __iomem *va = NULL;
+ phys_addr_t bus_addr;
+ u32 dev_addr, offset;
+ size_t size;
+ int i;
+
+ if (len == 0)
+ return NULL;
+
+ for (i = 0; i < kproc->num_mems; i++) {
+ bus_addr = kproc->mem[i].bus_addr;
+ dev_addr = kproc->mem[i].dev_addr;
+ size = kproc->mem[i].size;
+
+ if (da < KEYSTONE_RPROC_LOCAL_ADDRESS_MASK) {
+ /* handle rproc-view addresses */
+ if (da >= dev_addr &&
+ ((da + len) <= (dev_addr + size))) {
+ offset = da - dev_addr;
+ va = kproc->mem[i].cpu_addr + offset;
+ return (__force void *)va;
+ }
+ } else {
+ /* handle SoC-view addresses */
+ if (da >= bus_addr &&
+ (da + len) <= (bus_addr + size)) {
+ offset = da - bus_addr;
+ va = kproc->mem[i].cpu_addr + offset;
+ return (__force void *)va;
+ }
+ }
+ }
+
+ /* handle static DDR reserved memory regions */
+ for (i = 0; i < kproc->num_rmems; i++) {
+ dev_addr = kproc->rmem[i].dev_addr;
+ size = kproc->rmem[i].size;
+
+ if (da >= dev_addr && ((da + len) <= (dev_addr + size))) {
+ offset = da - dev_addr;
+ va = kproc->rmem[i].cpu_addr + offset;
+ return (__force void *)va;
+ }
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(k3_rproc_da_to_va);
+
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("TI K3 common Remoteproc code");
diff --git a/drivers/remoteproc/ti_k3_common.h b/drivers/remoteproc/ti_k3_common.h
index 663911dc7032..622711951811 100644
--- a/drivers/remoteproc/ti_k3_common.h
+++ b/drivers/remoteproc/ti_k3_common.h
@@ -16,6 +16,8 @@
#ifndef REMOTEPROC_TI_K3_COMMON_H
#define REMOTEPROC_TI_K3_COMMON_H
+#define KEYSTONE_RPROC_LOCAL_ADDRESS_MASK (SZ_16M - 1)
+
/**
* struct k3_rproc_mem - internal memory structure
* @cpu_addr: MPU virtual address of the memory region
@@ -101,4 +103,6 @@ int k3_rproc_attach(struct rproc *rproc);
int k3_rproc_detach(struct rproc *rproc);
struct resource_table *k3_get_loaded_rsc_table(struct rproc *rproc,
size_t *rsc_table_sz);
+void *k3_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len,
+ bool *is_iomem);
#endif /* REMOTEPROC_TI_K3_COMMON_H */
diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
index 0bfa3b730d1f..3d888ab9de6b 100644
--- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
@@ -22,8 +22,6 @@
#include "ti_sci_proc.h"
#include "ti_k3_common.h"
-#define KEYSTONE_RPROC_LOCAL_ADDRESS_MASK (SZ_16M - 1)
-
/*
* Power up the DSP remote processor.
*
@@ -58,72 +56,13 @@ static int k3_dsp_rproc_start(struct rproc *rproc)
return 0;
}
-/*
- * Custom function to translate a DSP device address (internal RAMs only) to a
- * kernel virtual address. The DSPs can access their RAMs at either an internal
- * address visible only from a DSP, or at the SoC-level bus address. Both these
- * addresses need to be looked through for translation. The translated addresses
- * 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, bool *is_iomem)
-{
- struct k3_rproc *kproc = rproc->priv;
- void __iomem *va = NULL;
- phys_addr_t bus_addr;
- u32 dev_addr, offset;
- size_t size;
- int i;
-
- if (len == 0)
- return NULL;
-
- for (i = 0; i < kproc->num_mems; i++) {
- bus_addr = kproc->mem[i].bus_addr;
- dev_addr = kproc->mem[i].dev_addr;
- size = kproc->mem[i].size;
-
- if (da < KEYSTONE_RPROC_LOCAL_ADDRESS_MASK) {
- /* handle DSP-view addresses */
- if (da >= dev_addr &&
- ((da + len) <= (dev_addr + size))) {
- offset = da - dev_addr;
- va = kproc->mem[i].cpu_addr + offset;
- return (__force void *)va;
- }
- } else {
- /* handle SoC-view addresses */
- if (da >= bus_addr &&
- (da + len) <= (bus_addr + size)) {
- offset = da - bus_addr;
- va = kproc->mem[i].cpu_addr + offset;
- return (__force void *)va;
- }
- }
- }
-
- /* handle static DDR reserved memory regions */
- for (i = 0; i < kproc->num_rmems; i++) {
- dev_addr = kproc->rmem[i].dev_addr;
- size = kproc->rmem[i].size;
-
- if (da >= dev_addr && ((da + len) <= (dev_addr + size))) {
- offset = da - dev_addr;
- va = kproc->rmem[i].cpu_addr + offset;
- return (__force void *)va;
- }
- }
-
- return NULL;
-}
-
static const struct rproc_ops k3_dsp_rproc_ops = {
.start = k3_dsp_rproc_start,
.stop = k3_rproc_stop,
.attach = k3_rproc_attach,
.detach = k3_rproc_detach,
.kick = k3_rproc_kick,
- .da_to_va = k3_dsp_rproc_da_to_va,
+ .da_to_va = k3_rproc_da_to_va,
.get_loaded_rsc_table = k3_get_loaded_rsc_table,
};
diff --git a/drivers/remoteproc/ti_k3_m4_remoteproc.c b/drivers/remoteproc/ti_k3_m4_remoteproc.c
index e1caa5ee9a0d..a959f361aae2 100644
--- a/drivers/remoteproc/ti_k3_m4_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_m4_remoteproc.c
@@ -21,62 +21,6 @@
#include "ti_sci_proc.h"
#include "ti_k3_common.h"
-/*
- * Custom function to translate a remote processor device address (internal
- * RAMs only) to a kernel virtual address. The remote processors can access
- * their RAMs at either an internal address visible only from a remote
- * processor, or at the SoC-level bus address. Both these addresses need to be
- * looked through for translation. The translated addresses can be used either
- * by the remoteproc core for loading (when using kernel remoteproc loader), or
- * by any rpmsg bus drivers.
- */
-static void *k3_m4_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
-{
- struct k3_rproc *kproc = rproc->priv;
- void __iomem *va = NULL;
- phys_addr_t bus_addr;
- u32 dev_addr, offset;
- size_t size;
- int i;
-
- if (len == 0)
- return NULL;
-
- for (i = 0; i < kproc->num_mems; i++) {
- bus_addr = kproc->mem[i].bus_addr;
- dev_addr = kproc->mem[i].dev_addr;
- size = kproc->mem[i].size;
-
- /* handle M4-view addresses */
- if (da >= dev_addr && ((da + len) <= (dev_addr + size))) {
- offset = da - dev_addr;
- va = kproc->mem[i].cpu_addr + offset;
- return (__force void *)va;
- }
-
- /* handle SoC-view addresses */
- if (da >= bus_addr && ((da + len) <= (bus_addr + size))) {
- offset = da - bus_addr;
- va = kproc->mem[i].cpu_addr + offset;
- return (__force void *)va;
- }
- }
-
- /* handle static DDR reserved memory regions */
- for (i = 0; i < kproc->num_rmems; i++) {
- dev_addr = kproc->rmem[i].dev_addr;
- size = kproc->rmem[i].size;
-
- if (da >= dev_addr && ((da + len) <= (dev_addr + size))) {
- offset = da - dev_addr;
- va = kproc->rmem[i].cpu_addr + offset;
- return (__force void *)va;
- }
- }
-
- return NULL;
-}
-
static int k3_m4_rproc_of_get_memories(struct platform_device *pdev,
struct k3_rproc *kproc)
{
@@ -220,7 +164,7 @@ static const struct rproc_ops k3_m4_rproc_ops = {
.attach = k3_rproc_attach,
.detach = k3_rproc_detach,
.kick = k3_rproc_kick,
- .da_to_va = k3_m4_rproc_da_to_va,
+ .da_to_va = k3_rproc_da_to_va,
.get_loaded_rsc_table = k3_get_loaded_rsc_table,
};
--
2.34.1
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