[IWL_TM_ATTR_FIXRATE] = { .type = NLA_U32, },
[IWL_TM_ATTR_UCODE_OWNER] = { .type = NLA_U8, },
+
+ [IWL_TM_ATTR_SRAM_ADDR] = { .type = NLA_U32, },
+ [IWL_TM_ATTR_SRAM_SIZE] = { .type = NLA_U32, },
+ [IWL_TM_ATTR_SRAM_DUMP] = { .type = NLA_UNSPEC, },
};
/*
{
priv->pre_rx_handler = iwl_testmode_ucode_rx_pkt;
priv->testmode_trace.trace_enabled = false;
+ priv->testmode_sram.sram_readed = false;
+}
+
+void iwl_sram_cleanup(struct iwl_priv *priv)
+{
+ if (priv->testmode_sram.sram_readed) {
+ kfree(priv->testmode_sram.buff_addr);
+ priv->testmode_sram.buff_addr = NULL;
+ priv->testmode_sram.buff_size = 0;
+ priv->testmode_sram.num_chunks = 0;
+ priv->testmode_sram.sram_readed = false;
+ }
}
static void iwl_trace_cleanup(struct iwl_priv *priv)
void iwl_testmode_cleanup(struct iwl_priv *priv)
{
iwl_trace_cleanup(priv);
+ iwl_sram_cleanup(priv);
}
/*
return 0;
}
+/*
+ * This function handles the user application commands for SRAM data dump
+ *
+ * It retrieves the mandatory fields IWL_TM_ATTR_SRAM_ADDR and
+ * IWL_TM_ATTR_SRAM_SIZE to decide the memory area for SRAM data reading
+ *
+ * Several error will be retured, -EBUSY if the SRAM data retrieved by
+ * previous command has not been delivered to userspace, or -ENOMSG if
+ * the mandatory fields (IWL_TM_ATTR_SRAM_ADDR,IWL_TM_ATTR_SRAM_SIZE)
+ * are missing, or -ENOMEM if the buffer allocation fails.
+ *
+ * Otherwise 0 is replied indicating the success of the SRAM reading.
+ *
+ * @hw: ieee80211_hw object that represents the device
+ * @tb: gnl message fields from the user space
+ */
+static int iwl_testmode_sram(struct ieee80211_hw *hw, struct nlattr **tb)
+{
+ struct iwl_priv *priv = hw->priv;
+ u32 base, ofs, size;
+
+ if (priv->testmode_sram.sram_readed)
+ return -EBUSY;
+
+ if (!tb[IWL_TM_ATTR_SRAM_ADDR]) {
+ IWL_DEBUG_INFO(priv, "Error finding SRAM offset address\n");
+ return -ENOMSG;
+ }
+ ofs = nla_get_u32(tb[IWL_TM_ATTR_SRAM_ADDR]);
+ if (!tb[IWL_TM_ATTR_SRAM_SIZE]) {
+ IWL_DEBUG_INFO(priv, "Error finding size for SRAM reading\n");
+ return -ENOMSG;
+ }
+ size = nla_get_u32(tb[IWL_TM_ATTR_SRAM_SIZE]);
+ priv->testmode_sram.buff_size = (size / 4) * 4;
+ priv->testmode_sram.buff_addr =
+ kmalloc(priv->testmode_sram.buff_size, GFP_KERNEL);
+ if (priv->testmode_sram.buff_addr == NULL) {
+ IWL_DEBUG_INFO(priv, "Error allocating memory\n");
+ return -ENOMEM;
+ }
+ base = 0x800000;
+ _iwl_read_targ_mem_words(bus(priv), base + ofs,
+ priv->testmode_sram.buff_addr,
+ priv->testmode_sram.buff_size / 4);
+ priv->testmode_sram.num_chunks =
+ DIV_ROUND_UP(priv->testmode_sram.buff_size, TRACE_CHUNK_SIZE);
+ priv->testmode_sram.sram_readed = true;
+ return 0;
+}
+
+static int iwl_testmode_sram_dump(struct ieee80211_hw *hw, struct nlattr **tb,
+ struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct iwl_priv *priv = hw->priv;
+ int idx, length;
+
+ if (priv->testmode_sram.sram_readed) {
+ idx = cb->args[4];
+ if (idx >= priv->testmode_sram.num_chunks) {
+ iwl_sram_cleanup(priv);
+ return -ENOENT;
+ }
+ length = TRACE_CHUNK_SIZE;
+ if (((idx + 1) == priv->testmode_sram.num_chunks) &&
+ (priv->testmode_sram.buff_size % TRACE_CHUNK_SIZE))
+ length = priv->testmode_sram.buff_size %
+ TRACE_CHUNK_SIZE;
+
+ NLA_PUT(skb, IWL_TM_ATTR_SRAM_DUMP, length,
+ priv->testmode_sram.buff_addr +
+ (TRACE_CHUNK_SIZE * idx));
+ idx++;
+ cb->args[4] = idx;
+ return 0;
+ } else
+ return -EFAULT;
+
+ nla_put_failure:
+ return -ENOBUFS;
+}
+
/* The testmode gnl message handler that takes the gnl message from the
* user space and parses it per the policy iwl_testmode_gnl_msg_policy, then
result = iwl_testmode_ownership(hw, tb);
break;
+ case IWL_TM_CMD_APP2DEV_READ_SRAM:
+ IWL_DEBUG_INFO(priv, "testmode sram read cmd to driver\n");
+ result = iwl_testmode_sram(hw, tb);
+ break;
+
default:
IWL_DEBUG_INFO(priv, "Unknown testmode command\n");
result = -ENOSYS;
IWL_DEBUG_INFO(priv, "uCode trace cmd to driver\n");
result = iwl_testmode_trace_dump(hw, tb, skb, cb);
break;
+ case IWL_TM_CMD_APP2DEV_DUMP_SRAM:
+ IWL_DEBUG_INFO(priv, "testmode sram dump cmd to driver\n");
+ result = iwl_testmode_sram_dump(hw, tb, skb, cb);
+ break;
default:
result = -EINVAL;
break;
* @IWL_TM_CMD_DEV2APP_EEPROM_RSP:
* commands from kernel space to carry the eeprom response
* to user application
+ *
* @IWL_TM_CMD_APP2DEV_OWNERSHIP:
* commands from user application to own change the ownership of the uCode
* if application has the ownership, the only host command from
* testmode will deliver to uCode. Default owner is driver
+ *
* @IWL_TM_CMD_APP2DEV_INDIRECT_REG_READ32:
* @IWL_TM_CMD_APP2DEV_INDIRECT_REG_WRITE32:
* commands from user applicaiton to indirectly access peripheral register
*
+ * @IWL_TM_CMD_APP2DEV_READ_SRAM:
+ * @IWL_TM_CMD_APP2DEV_DUMP_SRAM:
+ * commands from user applicaiton to read data in sram
+ *
*/
enum iwl_tm_cmd_t {
IWL_TM_CMD_APP2DEV_UCODE = 1,
IWL_TM_CMD_APP2DEV_OWNERSHIP = 17,
IWL_TM_CMD_APP2DEV_INDIRECT_REG_READ32 = 18,
IWL_TM_CMD_APP2DEV_INDIRECT_REG_WRITE32 = 19,
- IWL_TM_CMD_MAX = 20,
+ IWL_TM_CMD_APP2DEV_READ_SRAM = 20,
+ IWL_TM_CMD_APP2DEV_DUMP_SRAM = 21,
+ IWL_TM_CMD_MAX = 22,
};
/*
* When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_OWNERSHIP,
* The mandatory fields are:
* IWL_TM_ATTR_UCODE_OWNER for the new owner
+ *
+ * @IWL_TM_ATTR_SRAM_ADDR:
+ * @IWL_TM_ATTR_SRAM_SIZE:
+ * When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_READ_SRAM,
+ * The mandatory fields are:
+ * IWL_TM_ATTR_SRAM_ADDR for the address in sram
+ * IWL_TM_ATTR_SRAM_SIZE for the buffer size of data reading
+ *
+ * @IWL_TM_ATTR_SRAM_DUMP:
+ * When IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_DUMP_SRAM,
+ * IWL_TM_ATTR_SRAM_DUMP for the data in sram
+ *
*/
enum iwl_tm_attr_t {
IWL_TM_ATTR_NOT_APPLICABLE = 0,
IWL_TM_ATTR_TRACE_DUMP = 12,
IWL_TM_ATTR_FIXRATE = 13,
IWL_TM_ATTR_UCODE_OWNER = 14,
- IWL_TM_ATTR_MAX = 15,
+ IWL_TM_ATTR_SRAM_ADDR = 15,
+ IWL_TM_ATTR_SRAM_SIZE = 16,
+ IWL_TM_ATTR_SRAM_DUMP = 17,
+ IWL_TM_ATTR_MAX = 18,
};
/* uCode trace buffer */
projects / mirror_ubuntu-jammy-kernel.git / commitdiff