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path: root/drivers/net/wwan/iosm/iosm_ipc_devlink.c
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Diffstat (limited to 'drivers/net/wwan/iosm/iosm_ipc_devlink.c')
-rw-r--r--drivers/net/wwan/iosm/iosm_ipc_devlink.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/drivers/net/wwan/iosm/iosm_ipc_devlink.c b/drivers/net/wwan/iosm/iosm_ipc_devlink.c
new file mode 100644
index 000000000..2fe724d62
--- /dev/null
+++ b/drivers/net/wwan/iosm/iosm_ipc_devlink.c
@@ -0,0 +1,322 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2020-2021 Intel Corporation.
+ */
+#include <linux/vmalloc.h>
+
+#include "iosm_ipc_chnl_cfg.h"
+#include "iosm_ipc_coredump.h"
+#include "iosm_ipc_devlink.h"
+#include "iosm_ipc_flash.h"
+
+/* Coredump list */
+static struct iosm_coredump_file_info list[IOSM_NOF_CD_REGION] = {
+ {"report.json", REPORT_JSON_SIZE,},
+ {"coredump.fcd", COREDUMP_FCD_SIZE,},
+ {"cdd.log", CDD_LOG_SIZE,},
+ {"eeprom.bin", EEPROM_BIN_SIZE,},
+ {"bootcore_trace.bin", BOOTCORE_TRC_BIN_SIZE,},
+ {"bootcore_prev_trace.bin", BOOTCORE_PREV_TRC_BIN_SIZE,},
+};
+
+/* Get the param values for the specific param ID's */
+static int ipc_devlink_get_param(struct devlink *dl, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct iosm_devlink *ipc_devlink = devlink_priv(dl);
+
+ if (id == IOSM_DEVLINK_PARAM_ID_ERASE_FULL_FLASH)
+ ctx->val.vu8 = ipc_devlink->param.erase_full_flash;
+
+ return 0;
+}
+
+/* Set the param values for the specific param ID's */
+static int ipc_devlink_set_param(struct devlink *dl, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct iosm_devlink *ipc_devlink = devlink_priv(dl);
+
+ if (id == IOSM_DEVLINK_PARAM_ID_ERASE_FULL_FLASH)
+ ipc_devlink->param.erase_full_flash = ctx->val.vu8;
+
+ return 0;
+}
+
+/* Devlink param structure array */
+static const struct devlink_param iosm_devlink_params[] = {
+ DEVLINK_PARAM_DRIVER(IOSM_DEVLINK_PARAM_ID_ERASE_FULL_FLASH,
+ "erase_full_flash", DEVLINK_PARAM_TYPE_BOOL,
+ BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+ ipc_devlink_get_param, ipc_devlink_set_param,
+ NULL),
+};
+
+/* Get devlink flash component type */
+static enum iosm_flash_comp_type
+ipc_devlink_get_flash_comp_type(const char comp_str[], u32 len)
+{
+ enum iosm_flash_comp_type fls_type;
+
+ if (!strncmp("PSI", comp_str, len))
+ fls_type = FLASH_COMP_TYPE_PSI;
+ else if (!strncmp("EBL", comp_str, len))
+ fls_type = FLASH_COMP_TYPE_EBL;
+ else if (!strncmp("FLS", comp_str, len))
+ fls_type = FLASH_COMP_TYPE_FLS;
+ else
+ fls_type = FLASH_COMP_TYPE_INVAL;
+
+ return fls_type;
+}
+
+/* Function triggered on devlink flash command
+ * Flash update function which calls multiple functions based on
+ * component type specified in the flash command
+ */
+static int ipc_devlink_flash_update(struct devlink *devlink,
+ struct devlink_flash_update_params *params,
+ struct netlink_ext_ack *extack)
+{
+ struct iosm_devlink *ipc_devlink = devlink_priv(devlink);
+ enum iosm_flash_comp_type fls_type;
+ struct iosm_devlink_image *header;
+ int rc = -EINVAL;
+ u8 *mdm_rsp;
+
+ header = (struct iosm_devlink_image *)params->fw->data;
+
+ if (!header || params->fw->size <= IOSM_DEVLINK_HDR_SIZE ||
+ (memcmp(header->magic_header, IOSM_DEVLINK_MAGIC_HEADER,
+ IOSM_DEVLINK_MAGIC_HEADER_LEN) != 0))
+ return -EINVAL;
+
+ mdm_rsp = kzalloc(IOSM_EBL_DW_PACK_SIZE, GFP_KERNEL);
+ if (!mdm_rsp)
+ return -ENOMEM;
+
+ fls_type = ipc_devlink_get_flash_comp_type(header->image_type,
+ IOSM_DEVLINK_MAX_IMG_LEN);
+
+ switch (fls_type) {
+ case FLASH_COMP_TYPE_PSI:
+ rc = ipc_flash_boot_psi(ipc_devlink, params->fw);
+ break;
+ case FLASH_COMP_TYPE_EBL:
+ rc = ipc_flash_boot_ebl(ipc_devlink, params->fw);
+ if (rc)
+ break;
+ rc = ipc_flash_boot_set_capabilities(ipc_devlink, mdm_rsp);
+ if (rc)
+ break;
+ rc = ipc_flash_read_swid(ipc_devlink, mdm_rsp);
+ break;
+ case FLASH_COMP_TYPE_FLS:
+ rc = ipc_flash_send_fls(ipc_devlink, params->fw, mdm_rsp);
+ break;
+ default:
+ devlink_flash_update_status_notify(devlink, "Invalid component",
+ NULL, 0, 0);
+ break;
+ }
+
+ if (!rc)
+ devlink_flash_update_status_notify(devlink, "Flashing success",
+ header->image_type, 0, 0);
+ else
+ devlink_flash_update_status_notify(devlink, "Flashing failed",
+ header->image_type, 0, 0);
+
+ kfree(mdm_rsp);
+ return rc;
+}
+
+/* Call back function for devlink ops */
+static const struct devlink_ops devlink_flash_ops = {
+ .flash_update = ipc_devlink_flash_update,
+};
+
+/**
+ * ipc_devlink_send_cmd - Send command to Modem
+ * @ipc_devlink: Pointer to struct iosm_devlink
+ * @cmd: Command to be sent to modem
+ * @entry: Command entry number
+ *
+ * Returns: 0 on success and failure value on error
+ */
+int ipc_devlink_send_cmd(struct iosm_devlink *ipc_devlink, u16 cmd, u32 entry)
+{
+ struct iosm_rpsi_cmd rpsi_cmd;
+
+ rpsi_cmd.param.dword = cpu_to_le32(entry);
+ rpsi_cmd.cmd = cpu_to_le16(cmd);
+ rpsi_cmd.crc = rpsi_cmd.param.word[0] ^ rpsi_cmd.param.word[1] ^
+ rpsi_cmd.cmd;
+
+ return ipc_imem_sys_devlink_write(ipc_devlink, (u8 *)&rpsi_cmd,
+ sizeof(rpsi_cmd));
+}
+
+/* Function to create snapshot */
+static int ipc_devlink_coredump_snapshot(struct devlink *dl,
+ const struct devlink_region_ops *ops,
+ struct netlink_ext_ack *extack,
+ u8 **data)
+{
+ struct iosm_devlink *ipc_devlink = devlink_priv(dl);
+ struct iosm_coredump_file_info *cd_list = ops->priv;
+ u32 region_size;
+ int rc;
+
+ dev_dbg(ipc_devlink->dev, "Region:%s, ID:%d", ops->name,
+ cd_list->entry);
+ region_size = cd_list->default_size;
+ rc = ipc_coredump_collect(ipc_devlink, data, cd_list->entry,
+ region_size);
+ if (rc) {
+ dev_err(ipc_devlink->dev, "Fail to create snapshot,err %d", rc);
+ goto coredump_collect_err;
+ }
+
+ /* Send coredump end cmd indicating end of coredump collection */
+ if (cd_list->entry == (IOSM_NOF_CD_REGION - 1))
+ ipc_coredump_get_list(ipc_devlink, rpsi_cmd_coredump_end);
+
+ return 0;
+
+coredump_collect_err:
+ ipc_coredump_get_list(ipc_devlink, rpsi_cmd_coredump_end);
+ return rc;
+}
+
+/* To create regions for coredump files */
+static int ipc_devlink_create_region(struct iosm_devlink *devlink)
+{
+ struct devlink_region_ops *mdm_coredump;
+ int rc = 0;
+ int i;
+
+ mdm_coredump = devlink->iosm_devlink_mdm_coredump;
+ for (i = 0; i < IOSM_NOF_CD_REGION; i++) {
+ mdm_coredump[i].name = list[i].filename;
+ mdm_coredump[i].snapshot = ipc_devlink_coredump_snapshot;
+ mdm_coredump[i].destructor = vfree;
+ devlink->cd_regions[i] =
+ devlink_region_create(devlink->devlink_ctx,
+ &mdm_coredump[i], MAX_SNAPSHOTS,
+ list[i].default_size);
+
+ if (IS_ERR(devlink->cd_regions[i])) {
+ rc = PTR_ERR(devlink->cd_regions[i]);
+ dev_err(devlink->dev, "Devlink region fail,err %d", rc);
+ /* Delete previously created regions */
+ for ( ; i >= 0; i--)
+ devlink_region_destroy(devlink->cd_regions[i]);
+ goto region_create_fail;
+ }
+ list[i].entry = i;
+ mdm_coredump[i].priv = list + i;
+ }
+region_create_fail:
+ return rc;
+}
+
+/* To Destroy devlink regions */
+static void ipc_devlink_destroy_region(struct iosm_devlink *ipc_devlink)
+{
+ u8 i;
+
+ for (i = 0; i < IOSM_NOF_CD_REGION; i++)
+ devlink_region_destroy(ipc_devlink->cd_regions[i]);
+}
+
+/**
+ * ipc_devlink_init - Initialize/register devlink to IOSM driver
+ * @ipc_imem: Pointer to struct iosm_imem
+ *
+ * Returns: Pointer to iosm_devlink on success and NULL on failure
+ */
+struct iosm_devlink *ipc_devlink_init(struct iosm_imem *ipc_imem)
+{
+ struct ipc_chnl_cfg chnl_cfg_flash = { 0 };
+ struct iosm_devlink *ipc_devlink;
+ struct devlink *devlink_ctx;
+ int rc;
+
+ devlink_ctx = devlink_alloc(&devlink_flash_ops,
+ sizeof(struct iosm_devlink),
+ ipc_imem->dev);
+ if (!devlink_ctx) {
+ dev_err(ipc_imem->dev, "devlink_alloc failed");
+ goto devlink_alloc_fail;
+ }
+
+ ipc_devlink = devlink_priv(devlink_ctx);
+ ipc_devlink->devlink_ctx = devlink_ctx;
+ ipc_devlink->pcie = ipc_imem->pcie;
+ ipc_devlink->dev = ipc_imem->dev;
+
+ rc = devlink_params_register(devlink_ctx, iosm_devlink_params,
+ ARRAY_SIZE(iosm_devlink_params));
+ if (rc) {
+ dev_err(ipc_devlink->dev,
+ "devlink_params_register failed. rc %d", rc);
+ goto param_reg_fail;
+ }
+
+ ipc_devlink->cd_file_info = list;
+
+ rc = ipc_devlink_create_region(ipc_devlink);
+ if (rc) {
+ dev_err(ipc_devlink->dev, "Devlink Region create failed, rc %d",
+ rc);
+ goto region_create_fail;
+ }
+
+ if (ipc_chnl_cfg_get(&chnl_cfg_flash, IPC_MEM_CTRL_CHL_ID_7) < 0)
+ goto chnl_get_fail;
+
+ ipc_imem_channel_init(ipc_imem, IPC_CTYPE_CTRL,
+ chnl_cfg_flash, IRQ_MOD_OFF);
+
+ init_completion(&ipc_devlink->devlink_sio.read_sem);
+ skb_queue_head_init(&ipc_devlink->devlink_sio.rx_list);
+
+ devlink_register(devlink_ctx);
+ dev_dbg(ipc_devlink->dev, "iosm devlink register success");
+
+ return ipc_devlink;
+
+chnl_get_fail:
+ ipc_devlink_destroy_region(ipc_devlink);
+region_create_fail:
+ devlink_params_unregister(devlink_ctx, iosm_devlink_params,
+ ARRAY_SIZE(iosm_devlink_params));
+param_reg_fail:
+ devlink_free(devlink_ctx);
+devlink_alloc_fail:
+ return NULL;
+}
+
+/**
+ * ipc_devlink_deinit - To unintialize the devlink from IOSM driver.
+ * @ipc_devlink: Devlink instance
+ */
+void ipc_devlink_deinit(struct iosm_devlink *ipc_devlink)
+{
+ struct devlink *devlink_ctx = ipc_devlink->devlink_ctx;
+
+ devlink_unregister(devlink_ctx);
+ ipc_devlink_destroy_region(ipc_devlink);
+ devlink_params_unregister(devlink_ctx, iosm_devlink_params,
+ ARRAY_SIZE(iosm_devlink_params));
+ if (ipc_devlink->devlink_sio.devlink_read_pend) {
+ complete(&ipc_devlink->devlink_sio.read_sem);
+ complete(&ipc_devlink->devlink_sio.channel->ul_sem);
+ }
+ if (!ipc_devlink->devlink_sio.devlink_read_pend)
+ skb_queue_purge(&ipc_devlink->devlink_sio.rx_list);
+
+ ipc_imem_sys_devlink_close(ipc_devlink);
+ devlink_free(devlink_ctx);
+}