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Message-ID: <20240201192931.1324130-1-robh@kernel.org>
Date: Thu, 1 Feb 2024 13:29:30 -0600
From: Rob Herring <robh@...nel.org>
To: Li Yang <leoyang.li@....com>
Cc: linuxppc-dev@...ts.ozlabs.org,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] soc: fsl: qbman: Remove RESERVEDMEM_OF_DECLARE usage
There is no reason to use RESERVEDMEM_OF_DECLARE() as the initialization
hook just saves off the base address and size. Use of
RESERVEDMEM_OF_DECLARE() is reserved for non-driver code and
initialization which must be done early. For qbman, retrieving the
address and size can be done in probe just as easily.
Signed-off-by: Rob Herring <robh@...nel.org>
---
drivers/soc/fsl/qbman/bman_ccsr.c | 27 +++---------
drivers/soc/fsl/qbman/dpaa_sys.c | 12 +++--
drivers/soc/fsl/qbman/dpaa_sys.h | 4 +-
drivers/soc/fsl/qbman/qman_ccsr.c | 73 ++++++++++---------------------
4 files changed, 38 insertions(+), 78 deletions(-)
diff --git a/drivers/soc/fsl/qbman/bman_ccsr.c b/drivers/soc/fsl/qbman/bman_ccsr.c
index cb24a08be084..b0f26f6f731e 100644
--- a/drivers/soc/fsl/qbman/bman_ccsr.c
+++ b/drivers/soc/fsl/qbman/bman_ccsr.c
@@ -144,17 +144,6 @@ static int bm_set_memory(u64 ba, u32 size)
static dma_addr_t fbpr_a;
static size_t fbpr_sz;
-static int bman_fbpr(struct reserved_mem *rmem)
-{
- fbpr_a = rmem->base;
- fbpr_sz = rmem->size;
-
- WARN_ON(!(fbpr_a && fbpr_sz));
-
- return 0;
-}
-RESERVEDMEM_OF_DECLARE(bman_fbpr, "fsl,bman-fbpr", bman_fbpr);
-
static irqreturn_t bman_isr(int irq, void *ptr)
{
u32 isr_val, ier_val, ecsr_val, isr_mask, i;
@@ -242,17 +231,11 @@ static int fsl_bman_probe(struct platform_device *pdev)
return -ENODEV;
}
- /*
- * If FBPR memory wasn't defined using the qbman compatible string
- * try using the of_reserved_mem_device method
- */
- if (!fbpr_a) {
- ret = qbman_init_private_mem(dev, 0, &fbpr_a, &fbpr_sz);
- if (ret) {
- dev_err(dev, "qbman_init_private_mem() failed 0x%x\n",
- ret);
- return -ENODEV;
- }
+ ret = qbman_init_private_mem(dev, 0, "fsl,bman-fbpr", &fbpr_a, &fbpr_sz);
+ if (ret) {
+ dev_err(dev, "qbman_init_private_mem() failed 0x%x\n",
+ ret);
+ return -ENODEV;
}
dev_dbg(dev, "Allocated FBPR 0x%llx 0x%zx\n", fbpr_a, fbpr_sz);
diff --git a/drivers/soc/fsl/qbman/dpaa_sys.c b/drivers/soc/fsl/qbman/dpaa_sys.c
index 33751450047e..e1d7b79cc450 100644
--- a/drivers/soc/fsl/qbman/dpaa_sys.c
+++ b/drivers/soc/fsl/qbman/dpaa_sys.c
@@ -34,8 +34,8 @@
/*
* Initialize a devices private memory region
*/
-int qbman_init_private_mem(struct device *dev, int idx, dma_addr_t *addr,
- size_t *size)
+int qbman_init_private_mem(struct device *dev, int idx, const char *compat,
+ dma_addr_t *addr, size_t *size)
{
struct device_node *mem_node;
struct reserved_mem *rmem;
@@ -44,8 +44,12 @@ int qbman_init_private_mem(struct device *dev, int idx, dma_addr_t *addr,
mem_node = of_parse_phandle(dev->of_node, "memory-region", idx);
if (!mem_node) {
- dev_err(dev, "No memory-region found for index %d\n", idx);
- return -ENODEV;
+ mem_node = of_find_compatible_node(NULL, NULL, compat);
+ if (!mem_node) {
+ dev_err(dev, "No memory-region found for index %d or compatible '%s'\n",
+ idx, compat);
+ return -ENODEV;
+ }
}
rmem = of_reserved_mem_lookup(mem_node);
diff --git a/drivers/soc/fsl/qbman/dpaa_sys.h b/drivers/soc/fsl/qbman/dpaa_sys.h
index ae8afa552b1e..16485bde9636 100644
--- a/drivers/soc/fsl/qbman/dpaa_sys.h
+++ b/drivers/soc/fsl/qbman/dpaa_sys.h
@@ -101,8 +101,8 @@ static inline u8 dpaa_cyc_diff(u8 ringsize, u8 first, u8 last)
#define DPAA_GENALLOC_OFF 0x80000000
/* Initialize the devices private memory region */
-int qbman_init_private_mem(struct device *dev, int idx, dma_addr_t *addr,
- size_t *size);
+int qbman_init_private_mem(struct device *dev, int idx, const char *compat,
+ dma_addr_t *addr, size_t *size);
/* memremap() attributes for different platforms */
#ifdef CONFIG_PPC
diff --git a/drivers/soc/fsl/qbman/qman_ccsr.c b/drivers/soc/fsl/qbman/qman_ccsr.c
index 157659fd033a..392e54f14dbe 100644
--- a/drivers/soc/fsl/qbman/qman_ccsr.c
+++ b/drivers/soc/fsl/qbman/qman_ccsr.c
@@ -468,28 +468,6 @@ static int zero_priv_mem(phys_addr_t addr, size_t sz)
return 0;
}
-
-static int qman_fqd(struct reserved_mem *rmem)
-{
- fqd_a = rmem->base;
- fqd_sz = rmem->size;
-
- WARN_ON(!(fqd_a && fqd_sz));
- return 0;
-}
-RESERVEDMEM_OF_DECLARE(qman_fqd, "fsl,qman-fqd", qman_fqd);
-
-static int qman_pfdr(struct reserved_mem *rmem)
-{
- pfdr_a = rmem->base;
- pfdr_sz = rmem->size;
-
- WARN_ON(!(pfdr_a && pfdr_sz));
-
- return 0;
-}
-RESERVEDMEM_OF_DECLARE(qman_pfdr, "fsl,qman-pfdr", qman_pfdr);
-
#endif
unsigned int qm_get_fqid_maxcnt(void)
@@ -796,39 +774,34 @@ static int fsl_qman_probe(struct platform_device *pdev)
qm_channel_caam = QMAN_CHANNEL_CAAM_REV3;
}
- if (fqd_a) {
+ /*
+ * Order of memory regions is assumed as FQD followed by PFDR
+ * in order to ensure allocations from the correct regions the
+ * driver initializes then allocates each piece in order
+ */
+ ret = qbman_init_private_mem(dev, 0, "fsl,qman-fqd", &fqd_a, &fqd_sz);
+ if (ret) {
+ dev_err(dev, "qbman_init_private_mem() for FQD failed 0x%x\n",
+ ret);
+ return -ENODEV;
+ }
#ifdef CONFIG_PPC
- /*
- * For PPC backward DT compatibility
- * FQD memory MUST be zero'd by software
- */
- zero_priv_mem(fqd_a, fqd_sz);
+ /*
+ * For PPC backward DT compatibility
+ * FQD memory MUST be zero'd by software
+ */
+ zero_priv_mem(fqd_a, fqd_sz);
#else
- WARN(1, "Unexpected architecture using non shared-dma-mem reservations");
+ WARN(1, "Unexpected architecture using non shared-dma-mem reservations");
#endif
- } else {
- /*
- * Order of memory regions is assumed as FQD followed by PFDR
- * in order to ensure allocations from the correct regions the
- * driver initializes then allocates each piece in order
- */
- ret = qbman_init_private_mem(dev, 0, &fqd_a, &fqd_sz);
- if (ret) {
- dev_err(dev, "qbman_init_private_mem() for FQD failed 0x%x\n",
- ret);
- return -ENODEV;
- }
- }
dev_dbg(dev, "Allocated FQD 0x%llx 0x%zx\n", fqd_a, fqd_sz);
- if (!pfdr_a) {
- /* Setup PFDR memory */
- ret = qbman_init_private_mem(dev, 1, &pfdr_a, &pfdr_sz);
- if (ret) {
- dev_err(dev, "qbman_init_private_mem() for PFDR failed 0x%x\n",
- ret);
- return -ENODEV;
- }
+ /* Setup PFDR memory */
+ ret = qbman_init_private_mem(dev, 1, "fsl,qman-pfdr", &pfdr_a, &pfdr_sz);
+ if (ret) {
+ dev_err(dev, "qbman_init_private_mem() for PFDR failed 0x%x\n",
+ ret);
+ return -ENODEV;
}
dev_dbg(dev, "Allocated PFDR 0x%llx 0x%zx\n", pfdr_a, pfdr_sz);
--
2.43.0
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