1 files changed, 207 insertions, 56 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c
index e3a33388be70..3e5a35e26ad3 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c
@@ -58,44 +58,121 @@
  *
  *****************************************************************************/
 
+#include <linux/uuid.h>
 #include "iwl-drv.h"
 #include "iwl-debug.h"
 #include "acpi.h"
 #include "fw/runtime.h"
 
-void *iwl_acpi_get_object(struct device *dev, acpi_string method)
+static const guid_t intel_wifi_guid = GUID_INIT(0xF21202BF, 0x8F78, 0x4DC6,
+						0xA5, 0xB3, 0x1F, 0x73,
+						0x8E, 0x28, 0x5A, 0xDE);
+
+static int iwl_acpi_get_handle(struct device *dev, acpi_string method,
+			       acpi_handle *ret_handle)
 {
 	acpi_handle root_handle;
-	acpi_handle handle;
-	struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};
 	acpi_status status;
 
 	root_handle = ACPI_HANDLE(dev);
 	if (!root_handle) {
 		IWL_DEBUG_DEV_RADIO(dev,
-				    "Could not retrieve root port ACPI handle\n");
-		return ERR_PTR(-ENOENT);
+				    "ACPI: Could not retrieve root port handle\n");
+		return -ENOENT;
 	}
 
-	/* Get the method's handle */
-	status = acpi_get_handle(root_handle, method, &handle);
+	status = acpi_get_handle(root_handle, method, ret_handle);
 	if (ACPI_FAILURE(status)) {
-		IWL_DEBUG_DEV_RADIO(dev, "%s method not found\n", method);
-		return ERR_PTR(-ENOENT);
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "ACPI: %s method not found\n", method);
+		return -ENOENT;
 	}
+	return 0;
+}
+
+void *iwl_acpi_get_object(struct device *dev, acpi_string method)
+{
+	struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};
+	acpi_handle handle;
+	acpi_status status;
+	int ret;
+
+	ret = iwl_acpi_get_handle(dev, method, &handle);
+	if (ret)
+		return ERR_PTR(-ENOENT);
 
 	/* Call the method with no arguments */
 	status = acpi_evaluate_object(handle, NULL, NULL, &buf);
 	if (ACPI_FAILURE(status)) {
-		IWL_DEBUG_DEV_RADIO(dev, "%s invocation failed (0x%x)\n",
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "ACPI: %s method invocation failed (status: 0x%x)\n",
 				    method, status);
 		return ERR_PTR(-ENOENT);
 	}
-
 	return buf.pointer;
 }
 IWL_EXPORT_SYMBOL(iwl_acpi_get_object);
 
+/**
+* Generic function for evaluating a method defined in the device specific
+* method (DSM) interface. The returned acpi object must be freed by calling
+* function.
+*/
+static void *iwl_acpi_get_dsm_object(struct device *dev, int rev, int func,
+				     union acpi_object *args)
+{
+	union acpi_object *obj;
+
+	obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_wifi_guid, rev, func,
+				args);
+	if (!obj) {
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "ACPI: DSM method invocation failed (rev: %d, func:%d)\n",
+				    rev, func);
+		return ERR_PTR(-ENOENT);
+	}
+	return obj;
+}
+
+/**
+ * Evaluate a DSM with no arguments and a single u8 return value (inside a
+ * buffer object), verify and return that value.
+ */
+int iwl_acpi_get_dsm_u8(struct device *dev, int rev, int func)
+{
+	union acpi_object *obj;
+	int ret;
+
+	obj = iwl_acpi_get_dsm_object(dev, rev, func, NULL);
+	if (IS_ERR(obj))
+		return -ENOENT;
+
+	if (obj->type != ACPI_TYPE_BUFFER) {
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "ACPI: DSM method did not return a valid object, type=%d\n",
+				    obj->type);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (obj->buffer.length != sizeof(u8)) {
+		IWL_DEBUG_DEV_RADIO(dev,
+				    "ACPI: DSM method returned invalid buffer, length=%d\n",
+				    obj->buffer.length);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	ret = obj->buffer.pointer[0];
+	IWL_DEBUG_DEV_RADIO(dev,
+			    "ACPI: DSM method evaluated: func=%d, ret=%d\n",
+			    func, ret);
+out:
+	ACPI_FREE(obj);
+	return ret;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_dsm_u8);
+
 union acpi_object *iwl_acpi_get_wifi_pkg(struct device *dev,
 					 union acpi_object *data,
 					 int data_size, int *tbl_rev)
@@ -151,6 +228,82 @@ found:
 }
 IWL_EXPORT_SYMBOL(iwl_acpi_get_wifi_pkg);
 
+int iwl_acpi_get_tas(struct iwl_fw_runtime *fwrt,
+		     __le32 *black_list_array,
+		     int *black_list_size)
+{
+	union acpi_object *wifi_pkg, *data;
+	int ret, tbl_rev, i;
+	bool enabled;
+
+	data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+					 ACPI_WTAS_WIFI_DATA_SIZE,
+					 &tbl_rev);
+	if (IS_ERR(wifi_pkg)) {
+		ret = PTR_ERR(wifi_pkg);
+		goto out_free;
+	}
+
+	if (wifi_pkg->package.elements[0].type != ACPI_TYPE_INTEGER ||
+	    tbl_rev != 0) {
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	enabled = !!wifi_pkg->package.elements[0].integer.value;
+
+	if (!enabled) {
+		*black_list_size = -1;
+		IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n");
+		ret = 0;
+		goto out_free;
+	}
+
+	if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
+	    wifi_pkg->package.elements[1].integer.value >
+	    APCI_WTAS_BLACK_LIST_MAX) {
+		IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %llu\n",
+				wifi_pkg->package.elements[1].integer.value);
+		ret = -EINVAL;
+		goto out_free;
+	}
+	*black_list_size = wifi_pkg->package.elements[1].integer.value;
+
+	IWL_DEBUG_RADIO(fwrt, "TAS array size %d\n", *black_list_size);
+	if (*black_list_size > APCI_WTAS_BLACK_LIST_MAX) {
+		IWL_DEBUG_RADIO(fwrt, "TAS invalid array size value %u\n",
+				*black_list_size);
+		ret = -EINVAL;
+		goto out_free;
+	}
+
+	for (i = 0; i < *black_list_size; i++) {
+		u32 country;
+
+		if (wifi_pkg->package.elements[2 + i].type !=
+		    ACPI_TYPE_INTEGER) {
+			IWL_DEBUG_RADIO(fwrt,
+					"TAS invalid array elem %d\n", 2 + i);
+			ret = -EINVAL;
+			goto out_free;
+		}
+
+		country = wifi_pkg->package.elements[2 + i].integer.value;
+		black_list_array[i] = cpu_to_le32(country);
+		IWL_DEBUG_RADIO(fwrt, "TAS black list country %d\n", country);
+	}
+
+	ret = 0;
+out_free:
+	kfree(data);
+	return ret;
+}
+IWL_EXPORT_SYMBOL(iwl_acpi_get_tas);
+
 int iwl_acpi_get_mcc(struct device *dev, char *mcc)
 {
 	union acpi_object *wifi_pkg, *data;
@@ -247,9 +400,9 @@ out_free:
 }
 IWL_EXPORT_SYMBOL(iwl_acpi_get_eckv);
 
-int iwl_sar_set_profile(union acpi_object *table,
-			struct iwl_sar_profile *profile,
-			bool enabled)
+static int iwl_sar_set_profile(union acpi_object *table,
+			       struct iwl_sar_profile *profile,
+			       bool enabled)
 {
 	int i;
 
@@ -265,18 +418,13 @@ int iwl_sar_set_profile(union acpi_object *table,
 
 	return 0;
 }
-IWL_EXPORT_SYMBOL(iwl_sar_set_profile);
 
-int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt,
-			   __le16 per_chain_restriction[][IWL_NUM_SUB_BANDS],
-			   int prof_a, int prof_b)
+static int iwl_sar_fill_table(struct iwl_fw_runtime *fwrt,
+			      __le16 *per_chain, u32 n_subbands,
+			      int prof_a, int prof_b)
 {
-	int i, j, idx;
 	int profs[ACPI_SAR_NUM_CHAIN_LIMITS] = { prof_a, prof_b };
-
-	BUILD_BUG_ON(ACPI_SAR_NUM_CHAIN_LIMITS < 2);
-	BUILD_BUG_ON(ACPI_SAR_NUM_CHAIN_LIMITS * ACPI_SAR_NUM_SUB_BANDS !=
-		     ACPI_SAR_TABLE_SIZE);
+	int i, j, idx;
 
 	for (i = 0; i < ACPI_SAR_NUM_CHAIN_LIMITS; i++) {
 		struct iwl_sar_profile *prof;
@@ -308,9 +456,9 @@ int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt,
 			       "SAR EWRD: chain %d profile index %d\n",
 			       i, profs[i]);
 		IWL_DEBUG_RADIO(fwrt, "  Chain[%d]:\n", i);
-		for (j = 0; j < ACPI_SAR_NUM_SUB_BANDS; j++) {
-			idx = (i * ACPI_SAR_NUM_SUB_BANDS) + j;
-			per_chain_restriction[i][j] =
+		for (j = 0; j < n_subbands; j++) {
+			idx = i * ACPI_SAR_NUM_SUB_BANDS + j;
+			per_chain[i * n_subbands + j] =
 				cpu_to_le16(prof->table[idx]);
 			IWL_DEBUG_RADIO(fwrt, "    Band[%d] = %d * .125dBm\n",
 					j, prof->table[idx]);
@@ -319,6 +467,23 @@ int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt,
 
 	return 0;
 }
+
+int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt,
+			   __le16 *per_chain, u32 n_tables, u32 n_subbands,
+			   int prof_a, int prof_b)
+{
+	int i, ret = 0;
+
+	for (i = 0; i < n_tables; i++) {
+		ret = iwl_sar_fill_table(fwrt,
+			 &per_chain[i * n_subbands * ACPI_SAR_NUM_CHAIN_LIMITS],
+			 n_subbands, prof_a, prof_b);
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
 IWL_EXPORT_SYMBOL(iwl_sar_select_profile);
 
 int iwl_sar_get_wrds_table(struct iwl_fw_runtime *fwrt)
@@ -479,25 +644,8 @@ bool iwl_sar_geo_support(struct iwl_fw_runtime *fwrt)
 }
 IWL_EXPORT_SYMBOL(iwl_sar_geo_support);
 
-int iwl_validate_sar_geo_profile(struct iwl_fw_runtime *fwrt,
-				 struct iwl_host_cmd *cmd)
-{
-	struct iwl_geo_tx_power_profiles_resp *resp;
-	int ret;
-
-	resp = (void *)cmd->resp_pkt->data;
-	ret = le32_to_cpu(resp->profile_idx);
-	if (WARN_ON(ret > ACPI_NUM_GEO_PROFILES)) {
-		ret = -EIO;
-		IWL_WARN(fwrt, "Invalid geographic profile idx (%d)\n", ret);
-	}
-
-	return ret;
-}
-IWL_EXPORT_SYMBOL(iwl_validate_sar_geo_profile);
-
 int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt,
-		     struct iwl_per_chain_offset_group *table)
+		     struct iwl_per_chain_offset *table, u32 n_bands)
 {
 	int ret, i, j;
 
@@ -513,23 +661,26 @@ int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt,
 		return -ENOENT;
 	}
 
-	BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES * ACPI_WGDS_NUM_BANDS *
-		     ACPI_WGDS_TABLE_SIZE + 1 !=  ACPI_WGDS_WIFI_DATA_SIZE);
-
-	BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES > IWL_NUM_GEO_PROFILES);
-
 	for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) {
-		struct iwl_per_chain_offset *chain =
-			(struct iwl_per_chain_offset *)&table[i];
-
-		for (j = 0; j < ACPI_WGDS_NUM_BANDS; j++) {
+		for (j = 0; j < n_bands; j++) {
+			struct iwl_per_chain_offset *chain =
+				&table[i * n_bands + j];
 			u8 *value;
 
+			if (j * ACPI_GEO_PER_CHAIN_SIZE >=
+			    ARRAY_SIZE(fwrt->geo_profiles[0].values))
+				/*
+				 * Currently we only store lb an hb values, and
+				 * don't have any special ones for uhb. So leave
+				 * those empty for the time being
+				 */
+				break;
+
 			value = &fwrt->geo_profiles[i].values[j *
 				ACPI_GEO_PER_CHAIN_SIZE];
-			chain[j].max_tx_power = cpu_to_le16(value[0]);
-			chain[j].chain_a = value[1];
-			chain[j].chain_b = value[2];
+			chain->max_tx_power = cpu_to_le16(value[0]);
+			chain->chain_a = value[1];
+			chain->chain_b = value[2];
 			IWL_DEBUG_RADIO(fwrt,
 					"SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n",
 					i, j, value[1], value[2], value[0]);