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net: airoha: npu: Add airoha_npu_soc_data struct

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Introduce airoha_npu_soc_data structure in order to generalize per-SoC
NPU firmware info. Introduce airoha_npu_load_firmware utility routine.
This is a preliminary patch in order to introduce AN7583 NPU support.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251013-airoha-npu-7583-v3-2-00f748b5a0c7@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2025-10-13 15:58:50 +02:00 committed by Jakub Kicinski
parent 9fbafbfa5b
commit 0850ae496d
1 changed files with 52 additions and 27 deletions
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79
drivers/net/ethernet/airoha/airoha_npu.c
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@ -103,6 +103,16 @@ enum {
QDMA_WAN_PON_XDSL,
};
struct airoha_npu_fw {
const char *name;
int max_size;
};
struct airoha_npu_soc_data {
struct airoha_npu_fw fw_rv32;
struct airoha_npu_fw fw_data;
};
#define MBOX_MSG_FUNC_ID GENMASK(14, 11)
#define MBOX_MSG_STATIC_BUF BIT(5)
#define MBOX_MSG_STATUS GENMASK(4, 2)
@ -182,51 +192,55 @@ static int airoha_npu_send_msg(struct airoha_npu *npu, int func_id,
return ret;
}
static int airoha_npu_run_firmware(struct device *dev, void __iomem *base,
struct resource *res)
static int airoha_npu_load_firmware(struct device *dev, void __iomem *addr,
const struct airoha_npu_fw *fw_info)
{
const struct firmware *fw;
void __iomem *addr;
int ret;
ret = request_firmware(&fw, NPU_EN7581_FIRMWARE_RV32, dev);
ret = request_firmware(&fw, fw_info->name, dev);
if (ret)
return ret == -ENOENT ? -EPROBE_DEFER : ret;
if (fw->size > NPU_EN7581_FIRMWARE_RV32_MAX_SIZE) {
if (fw->size > fw_info->max_size) {
dev_err(dev, "%s: fw size too overlimit (%zu)\n",
NPU_EN7581_FIRMWARE_RV32, fw->size);
fw_info->name, fw->size);
ret = -E2BIG;
goto out;
}
addr = devm_ioremap_resource(dev, res);
if (IS_ERR(addr)) {
ret = PTR_ERR(addr);
goto out;
}
memcpy_toio(addr, fw->data, fw->size);
release_firmware(fw);
ret = request_firmware(&fw, NPU_EN7581_FIRMWARE_DATA, dev);
if (ret)
return ret == -ENOENT ? -EPROBE_DEFER : ret;
if (fw->size > NPU_EN7581_FIRMWARE_DATA_MAX_SIZE) {
dev_err(dev, "%s: fw size too overlimit (%zu)\n",
NPU_EN7581_FIRMWARE_DATA, fw->size);
ret = -E2BIG;
goto out;
}
memcpy_toio(base + REG_NPU_LOCAL_SRAM, fw->data, fw->size);
out:
release_firmware(fw);
return ret;
}
static int airoha_npu_run_firmware(struct device *dev, void __iomem *base,
struct resource *res)
{
const struct airoha_npu_soc_data *soc;
void __iomem *addr;
int ret;
soc = of_device_get_match_data(dev);
if (!soc)
return -EINVAL;
addr = devm_ioremap_resource(dev, res);
if (IS_ERR(addr))
return PTR_ERR(addr);
/* Load rv32 npu firmware */
ret = airoha_npu_load_firmware(dev, addr, &soc->fw_rv32);
if (ret)
return ret;
/* Load data npu firmware */
return airoha_npu_load_firmware(dev, base + REG_NPU_LOCAL_SRAM,
&soc->fw_data);
}
static irqreturn_t airoha_npu_mbox_handler(int irq, void *npu_instance)
{
struct airoha_npu *npu = npu_instance;
@ -597,8 +611,19 @@ void airoha_npu_put(struct airoha_npu *npu)
}
EXPORT_SYMBOL_GPL(airoha_npu_put);
static const struct airoha_npu_soc_data en7581_npu_soc_data = {
.fw_rv32 = {
.name = NPU_EN7581_FIRMWARE_RV32,
.max_size = NPU_EN7581_FIRMWARE_RV32_MAX_SIZE,
},
.fw_data = {
.name = NPU_EN7581_FIRMWARE_DATA,
.max_size = NPU_EN7581_FIRMWARE_DATA_MAX_SIZE,
},
};
static const struct of_device_id of_airoha_npu_match[] = {
{ .compatible = "airoha,en7581-npu" },
{ .compatible = "airoha,en7581-npu", .data = &en7581_npu_soc_data },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, of_airoha_npu_match);