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path: root/drivers/net/ipa/ipa_mem.c
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Diffstat (limited to 'drivers/net/ipa/ipa_mem.c')
-rw-r--r--drivers/net/ipa/ipa_mem.c120
1 files changed, 67 insertions, 53 deletions
diff --git a/drivers/net/ipa/ipa_mem.c b/drivers/net/ipa/ipa_mem.c
index 1e9eae208e44..835a3c9c1fd4 100644
--- a/drivers/net/ipa/ipa_mem.c
+++ b/drivers/net/ipa/ipa_mem.c
@@ -1,24 +1,24 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
- * Copyright (C) 2019-2021 Linaro Ltd.
+ * Copyright (C) 2019-2024 Linaro Ltd.
*/
-#include <linux/types.h>
-#include <linux/bitfield.h>
-#include <linux/bug.h>
#include <linux/dma-mapping.h>
-#include <linux/iommu.h>
#include <linux/io.h>
+#include <linux/iommu.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+
#include <linux/soc/qcom/smem.h>
+#include "gsi_trans.h"
#include "ipa.h"
-#include "ipa_reg.h"
-#include "ipa_data.h"
#include "ipa_cmd.h"
+#include "ipa_data.h"
#include "ipa_mem.h"
+#include "ipa_reg.h"
#include "ipa_table.h"
-#include "gsi_trans.h"
/* "Canary" value placed between memory regions to detect overflow */
#define IPA_MEM_CANARY_VAL cpu_to_le32(0xdeadbeef)
@@ -26,6 +26,8 @@
/* SMEM host id representing the modem. */
#define QCOM_SMEM_HOST_MODEM 1
+#define SMEM_IPA_FILTER_TABLE 497
+
const struct ipa_mem *ipa_mem_find(struct ipa *ipa, enum ipa_mem_id mem_id)
{
u32 i;
@@ -77,6 +79,7 @@ int ipa_mem_setup(struct ipa *ipa)
dma_addr_t addr = ipa->zero_addr;
const struct ipa_mem *mem;
struct gsi_trans *trans;
+ const struct reg *reg;
u32 offset;
u16 size;
u32 val;
@@ -86,7 +89,7 @@ int ipa_mem_setup(struct ipa *ipa)
*/
trans = ipa_cmd_trans_alloc(ipa, 4);
if (!trans) {
- dev_err(&ipa->pdev->dev, "no transaction for memory setup\n");
+ dev_err(ipa->dev, "no transaction for memory setup\n");
return -EBUSY;
}
@@ -112,8 +115,10 @@ int ipa_mem_setup(struct ipa *ipa)
/* Tell the hardware where the processing context area is located */
mem = ipa_mem_find(ipa, IPA_MEM_MODEM_PROC_CTX);
offset = ipa->mem_offset + mem->offset;
- val = proc_cntxt_base_addr_encoded(ipa->version, offset);
- iowrite32(val, ipa->reg_virt + IPA_REG_LOCAL_PKT_PROC_CNTXT_OFFSET);
+
+ reg = ipa_reg(ipa, LOCAL_PKT_PROC_CNTXT);
+ val = reg_encode(reg, IPA_BASE_ADDR, offset);
+ iowrite32(val, ipa->reg_virt + reg_offset(reg));
return 0;
}
@@ -160,6 +165,12 @@ static bool ipa_mem_id_valid(struct ipa *ipa, enum ipa_mem_id mem_id)
return false;
break;
+ case IPA_MEM_AP_V4_FILTER:
+ case IPA_MEM_AP_V6_FILTER:
+ if (version < IPA_VERSION_5_0)
+ return false;
+ break;
+
case IPA_MEM_NAT_TABLE:
case IPA_MEM_STATS_FILTER_ROUTE:
if (version < IPA_VERSION_4_5)
@@ -195,9 +206,12 @@ static bool ipa_mem_id_required(struct ipa *ipa, enum ipa_mem_id mem_id)
case IPA_MEM_PDN_CONFIG:
case IPA_MEM_STATS_QUOTA_MODEM:
- case IPA_MEM_STATS_TETHERING:
return ipa->version >= IPA_VERSION_4_0;
+ case IPA_MEM_STATS_TETHERING:
+ return ipa->version >= IPA_VERSION_4_0 &&
+ ipa->version != IPA_VERSION_5_0;
+
default:
return false; /* Anything else is optional */
}
@@ -205,8 +219,8 @@ static bool ipa_mem_id_required(struct ipa *ipa, enum ipa_mem_id mem_id)
static bool ipa_mem_valid_one(struct ipa *ipa, const struct ipa_mem *mem)
{
- struct device *dev = &ipa->pdev->dev;
enum ipa_mem_id mem_id = mem->id;
+ struct device *dev = ipa->dev;
u16 size_multiple;
/* Make sure the memory region is valid for this version of IPA */
@@ -242,7 +256,7 @@ static bool ipa_mem_valid_one(struct ipa *ipa, const struct ipa_mem *mem)
static bool ipa_mem_valid(struct ipa *ipa, const struct ipa_mem_data *mem_data)
{
DECLARE_BITMAP(regions, IPA_MEM_COUNT) = { };
- struct device *dev = &ipa->pdev->dev;
+ struct device *dev = ipa->dev;
enum ipa_mem_id mem_id;
u32 i;
@@ -278,7 +292,7 @@ static bool ipa_mem_valid(struct ipa *ipa, const struct ipa_mem_data *mem_data)
/* Do all memory regions fit within the IPA local memory? */
static bool ipa_mem_size_valid(struct ipa *ipa)
{
- struct device *dev = &ipa->pdev->dev;
+ struct device *dev = ipa->dev;
u32 limit = ipa->mem_size;
u32 i;
@@ -305,8 +319,9 @@ static bool ipa_mem_size_valid(struct ipa *ipa)
*/
int ipa_mem_config(struct ipa *ipa)
{
- struct device *dev = &ipa->pdev->dev;
+ struct device *dev = ipa->dev;
const struct ipa_mem *mem;
+ const struct reg *reg;
dma_addr_t addr;
u32 mem_size;
void *virt;
@@ -314,12 +329,14 @@ int ipa_mem_config(struct ipa *ipa)
u32 i;
/* Check the advertised location and size of the shared memory area */
- val = ioread32(ipa->reg_virt + IPA_REG_SHARED_MEM_SIZE_OFFSET);
+ reg = ipa_reg(ipa, SHARED_MEM_SIZE);
+ val = ioread32(ipa->reg_virt + reg_offset(reg));
/* The fields in the register are in 8 byte units */
- ipa->mem_offset = 8 * u32_get_bits(val, SHARED_MEM_BADDR_FMASK);
+ ipa->mem_offset = 8 * reg_decode(reg, MEM_BADDR, val);
+
/* Make sure the end is within the region's mapped space */
- mem_size = 8 * u32_get_bits(val, SHARED_MEM_SIZE_FMASK);
+ mem_size = 8 * reg_decode(reg, MEM_SIZE, val);
/* If the sizes don't match, issue a warning */
if (ipa->mem_offset + mem_size < ipa->mem_size) {
@@ -360,14 +377,6 @@ int ipa_mem_config(struct ipa *ipa)
while (--canary_count);
}
- /* Make sure filter and route table memory regions are valid */
- if (!ipa_table_valid(ipa))
- goto err_dma_free;
-
- /* Validate memory-related properties relevant to immediate commands */
- if (!ipa_cmd_data_valid(ipa))
- goto err_dma_free;
-
/* Verify the microcontroller ring alignment (if defined) */
mem = ipa_mem_find(ipa, IPA_MEM_UC_EVENT_RING);
if (mem && mem->offset % 1024) {
@@ -386,7 +395,7 @@ err_dma_free:
/* Inverse of ipa_mem_config() */
void ipa_mem_deconfig(struct ipa *ipa)
{
- struct device *dev = &ipa->pdev->dev;
+ struct device *dev = ipa->dev;
dma_free_coherent(dev, ipa->zero_size, ipa->zero_virt, ipa->zero_addr);
ipa->zero_size = 0;
@@ -413,8 +422,7 @@ int ipa_mem_zero_modem(struct ipa *ipa)
*/
trans = ipa_cmd_trans_alloc(ipa, 3);
if (!trans) {
- dev_err(&ipa->pdev->dev,
- "no transaction to zero modem memory\n");
+ dev_err(ipa->dev, "no transaction to zero modem memory\n");
return -EBUSY;
}
@@ -445,7 +453,7 @@ int ipa_mem_zero_modem(struct ipa *ipa)
*/
static int ipa_imem_init(struct ipa *ipa, unsigned long addr, size_t size)
{
- struct device *dev = &ipa->pdev->dev;
+ struct device *dev = ipa->dev;
struct iommu_domain *domain;
unsigned long iova;
phys_addr_t phys;
@@ -465,7 +473,8 @@ static int ipa_imem_init(struct ipa *ipa, unsigned long addr, size_t size)
size = PAGE_ALIGN(size + addr - phys);
iova = phys; /* We just want a direct mapping */
- ret = iommu_map(domain, iova, phys, size, IOMMU_READ | IOMMU_WRITE);
+ ret = iommu_map(domain, iova, phys, size, IOMMU_READ | IOMMU_WRITE,
+ GFP_KERNEL);
if (ret)
return ret;
@@ -477,13 +486,12 @@ static int ipa_imem_init(struct ipa *ipa, unsigned long addr, size_t size)
static void ipa_imem_exit(struct ipa *ipa)
{
+ struct device *dev = ipa->dev;
struct iommu_domain *domain;
- struct device *dev;
if (!ipa->imem_size)
return;
- dev = &ipa->pdev->dev;
domain = iommu_get_domain_for_dev(dev);
if (domain) {
size_t size;
@@ -503,7 +511,6 @@ static void ipa_imem_exit(struct ipa *ipa)
/**
* ipa_smem_init() - Initialize SMEM memory used by the IPA
* @ipa: IPA pointer
- * @item: Item ID of SMEM memory
* @size: Size (bytes) of SMEM memory region
*
* SMEM is a managed block of shared DRAM, from which numbered "items"
@@ -517,9 +524,9 @@ static void ipa_imem_exit(struct ipa *ipa)
*
* Note: @size and the item address are is not guaranteed to be page-aligned.
*/
-static int ipa_smem_init(struct ipa *ipa, u32 item, size_t size)
+static int ipa_smem_init(struct ipa *ipa, size_t size)
{
- struct device *dev = &ipa->pdev->dev;
+ struct device *dev = ipa->dev;
struct iommu_domain *domain;
unsigned long iova;
phys_addr_t phys;
@@ -539,25 +546,25 @@ static int ipa_smem_init(struct ipa *ipa, u32 item, size_t size)
* The item might have already been allocated, in which case we
* use it unless the size isn't what we expect.
*/
- ret = qcom_smem_alloc(QCOM_SMEM_HOST_MODEM, item, size);
+ ret = qcom_smem_alloc(QCOM_SMEM_HOST_MODEM, SMEM_IPA_FILTER_TABLE, size);
if (ret && ret != -EEXIST) {
- dev_err(dev, "error %d allocating size %zu SMEM item %u\n",
- ret, size, item);
+ dev_err(dev, "error %d allocating size %zu SMEM item\n",
+ ret, size);
return ret;
}
/* Now get the address of the SMEM memory region */
- virt = qcom_smem_get(QCOM_SMEM_HOST_MODEM, item, &actual);
+ virt = qcom_smem_get(QCOM_SMEM_HOST_MODEM, SMEM_IPA_FILTER_TABLE, &actual);
if (IS_ERR(virt)) {
ret = PTR_ERR(virt);
- dev_err(dev, "error %d getting SMEM item %u\n", ret, item);
+ dev_err(dev, "error %d getting SMEM item\n", ret);
return ret;
}
/* In case the region was already allocated, verify the size */
if (ret && actual != size) {
- dev_err(dev, "SMEM item %u has size %zu, expected %zu\n",
- item, actual, size);
+ dev_err(dev, "SMEM item has size %zu, expected %zu\n",
+ actual, size);
return -EINVAL;
}
@@ -568,12 +575,13 @@ static int ipa_smem_init(struct ipa *ipa, u32 item, size_t size)
}
/* Align the address down and the size up to a page boundary */
- addr = qcom_smem_virt_to_phys(virt) & PAGE_MASK;
+ addr = qcom_smem_virt_to_phys(virt);
phys = addr & PAGE_MASK;
size = PAGE_ALIGN(size + addr - phys);
iova = phys; /* We just want a direct mapping */
- ret = iommu_map(domain, iova, phys, size, IOMMU_READ | IOMMU_WRITE);
+ ret = iommu_map(domain, iova, phys, size, IOMMU_READ | IOMMU_WRITE,
+ GFP_KERNEL);
if (ret)
return ret;
@@ -585,7 +593,7 @@ static int ipa_smem_init(struct ipa *ipa, u32 item, size_t size)
static void ipa_smem_exit(struct ipa *ipa)
{
- struct device *dev = &ipa->pdev->dev;
+ struct device *dev = ipa->dev;
struct iommu_domain *domain;
domain = iommu_get_domain_for_dev(dev);
@@ -606,9 +614,10 @@ static void ipa_smem_exit(struct ipa *ipa)
}
/* Perform memory region-related initialization */
-int ipa_mem_init(struct ipa *ipa, const struct ipa_mem_data *mem_data)
+int ipa_mem_init(struct ipa *ipa, struct platform_device *pdev,
+ const struct ipa_mem_data *mem_data)
{
- struct device *dev = &ipa->pdev->dev;
+ struct device *dev = &pdev->dev;
struct resource *res;
int ret;
@@ -619,14 +628,19 @@ int ipa_mem_init(struct ipa *ipa, const struct ipa_mem_data *mem_data)
ipa->mem_count = mem_data->local_count;
ipa->mem = mem_data->local;
- ret = dma_set_mask_and_coherent(&ipa->pdev->dev, DMA_BIT_MASK(64));
+ /* Check the route and filter table memory regions */
+ if (!ipa_table_mem_valid(ipa, false))
+ return -EINVAL;
+ if (!ipa_table_mem_valid(ipa, true))
+ return -EINVAL;
+
+ ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
if (ret) {
dev_err(dev, "error %d setting DMA mask\n", ret);
return ret;
}
- res = platform_get_resource_byname(ipa->pdev, IORESOURCE_MEM,
- "ipa-shared");
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ipa-shared");
if (!res) {
dev_err(dev,
"DT error getting \"ipa-shared\" memory property\n");
@@ -646,7 +660,7 @@ int ipa_mem_init(struct ipa *ipa, const struct ipa_mem_data *mem_data)
if (ret)
goto err_unmap;
- ret = ipa_smem_init(ipa, mem_data->smem_id, mem_data->smem_size);
+ ret = ipa_smem_init(ipa, mem_data->smem_size);
if (ret)
goto err_imem_exit;
generated by cgit (git 2.34.1) at 2025-12-26 07:39:08 +0000