diff options
Diffstat (limited to 'drivers/net/wireless')
19 files changed, 1250 insertions, 856 deletions
diff --git a/drivers/net/wireless/iwlwifi/Makefile b/drivers/net/wireless/iwlwifi/Makefile index 98c8f6449649..170ec330d2a9 100644 --- a/drivers/net/wireless/iwlwifi/Makefile +++ b/drivers/net/wireless/iwlwifi/Makefile @@ -1,7 +1,3 @@ -obj-$(CONFIG_IWLDVM) += dvm/ - -CFLAGS_iwl-devtrace.o := -I$(src) - # common obj-$(CONFIG_IWLWIFI) += iwlwifi.o iwlwifi-objs += iwl-io.o @@ -13,5 +9,11 @@ iwlwifi-objs += pcie/drv.o pcie/rx.o pcie/tx.o pcie/trans.o iwlwifi-objs += pcie/1000.o pcie/2000.o pcie/5000.o pcie/6000.o iwlwifi-$(CONFIG_IWLWIFI_DEVICE_TRACING) += iwl-devtrace.o +iwlwifi-$(CONFIG_IWLWIFI_DEVICE_TESTMODE) += iwl-test.o ccflags-y += -D__CHECK_ENDIAN__ -I$(src) + + +obj-$(CONFIG_IWLDVM) += dvm/ + +CFLAGS_iwl-devtrace.o := -I$(src) diff --git a/drivers/net/wireless/iwlwifi/dvm/agn.h b/drivers/net/wireless/iwlwifi/dvm/agn.h index 2ae3608472a6..6d102413dd94 100644 --- a/drivers/net/wireless/iwlwifi/dvm/agn.h +++ b/drivers/net/wireless/iwlwifi/dvm/agn.h @@ -395,8 +395,10 @@ static inline __le32 iwl_hw_set_rate_n_flags(u8 rate, u32 flags) } extern int iwl_alive_start(struct iwl_priv *priv); -/* svtool */ + +/* testmode support */ #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE + extern int iwlagn_mac_testmode_cmd(struct ieee80211_hw *hw, void *data, int len); extern int iwlagn_mac_testmode_dump(struct ieee80211_hw *hw, @@ -404,13 +406,16 @@ extern int iwlagn_mac_testmode_dump(struct ieee80211_hw *hw, struct netlink_callback *cb, void *data, int len); extern void iwl_testmode_init(struct iwl_priv *priv); -extern void iwl_testmode_cleanup(struct iwl_priv *priv); +extern void iwl_testmode_free(struct iwl_priv *priv); + #else + static inline int iwlagn_mac_testmode_cmd(struct ieee80211_hw *hw, void *data, int len) { return -ENOSYS; } + static inline int iwlagn_mac_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *skb, struct netlink_callback *cb, @@ -418,12 +423,12 @@ int iwlagn_mac_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *skb, { return -ENOSYS; } -static inline -void iwl_testmode_init(struct iwl_priv *priv) + +static inline void iwl_testmode_init(struct iwl_priv *priv) { } -static inline -void iwl_testmode_cleanup(struct iwl_priv *priv) + +static inline void iwl_testmode_free(struct iwl_priv *priv) { } #endif diff --git a/drivers/net/wireless/iwlwifi/dvm/dev.h b/drivers/net/wireless/iwlwifi/dvm/dev.h index 89f2e1040e7f..4620b657948a 100644 --- a/drivers/net/wireless/iwlwifi/dvm/dev.h +++ b/drivers/net/wireless/iwlwifi/dvm/dev.h @@ -52,6 +52,8 @@ #include "rs.h" #include "tt.h" +#include "iwl-test.h" + /* CT-KILL constants */ #define CT_KILL_THRESHOLD_LEGACY 110 /* in Celsius */ #define CT_KILL_THRESHOLD 114 /* in Celsius */ @@ -596,24 +598,6 @@ struct iwl_lib_ops { void (*temperature)(struct iwl_priv *priv); }; -#ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE -struct iwl_testmode_trace { - u32 buff_size; - u32 total_size; - u32 num_chunks; - u8 *cpu_addr; - u8 *trace_addr; - dma_addr_t dma_addr; - bool trace_enabled; -}; -struct iwl_testmode_mem { - u32 buff_size; - u32 num_chunks; - u8 *buff_addr; - bool read_in_progress; -}; -#endif - struct iwl_wipan_noa_data { struct rcu_head rcu_head; u32 length; @@ -670,8 +654,6 @@ struct iwl_priv { enum ieee80211_band band; u8 valid_contexts; - void (*pre_rx_handler)(struct iwl_priv *priv, - struct iwl_rx_cmd_buffer *rxb); int (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, struct iwl_device_cmd *cmd); @@ -895,9 +877,9 @@ struct iwl_priv { struct led_classdev led; unsigned long blink_on, blink_off; bool led_registered; + #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE - struct iwl_testmode_trace testmode_trace; - struct iwl_testmode_mem testmode_mem; + struct iwl_test tst; u32 tm_fixed_rate; #endif diff --git a/drivers/net/wireless/iwlwifi/dvm/lib.c b/drivers/net/wireless/iwlwifi/dvm/lib.c index cb1ca7a25dd5..76f259283c3a 100644 --- a/drivers/net/wireless/iwlwifi/dvm/lib.c +++ b/drivers/net/wireless/iwlwifi/dvm/lib.c @@ -1265,7 +1265,7 @@ int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) * the mutex, this ensures we don't try to send two * (or more) synchronous commands at a time. */ - if (cmd->flags & CMD_SYNC) + if (!(cmd->flags & CMD_ASYNC)) lockdep_assert_held(&priv->mutex); if (priv->ucode_owner == IWL_OWNERSHIP_TM && diff --git a/drivers/net/wireless/iwlwifi/dvm/mac80211.c b/drivers/net/wireless/iwlwifi/dvm/mac80211.c index 599e8b41f5a8..9d2374862314 100644 --- a/drivers/net/wireless/iwlwifi/dvm/mac80211.c +++ b/drivers/net/wireless/iwlwifi/dvm/mac80211.c @@ -476,7 +476,7 @@ static int iwlagn_mac_resume(struct ieee80211_hw *hw) } if (priv->wowlan_sram) - _iwl_read_targ_mem_words( + _iwl_read_targ_mem_dwords( priv->trans, 0x800000, priv->wowlan_sram, img->sec[IWL_UCODE_SECTION_DATA].len / 4); diff --git a/drivers/net/wireless/iwlwifi/dvm/main.c b/drivers/net/wireless/iwlwifi/dvm/main.c index 1c2d0233a405..e620af3d592d 100644 --- a/drivers/net/wireless/iwlwifi/dvm/main.c +++ b/drivers/net/wireless/iwlwifi/dvm/main.c @@ -406,7 +406,7 @@ static void iwl_continuous_event_trace(struct iwl_priv *priv) base = priv->device_pointers.log_event_table; if (iwlagn_hw_valid_rtc_data_addr(base)) { - iwl_read_targ_mem_words(priv->trans, base, &read, sizeof(read)); + iwl_read_targ_mem_bytes(priv->trans, base, &read, sizeof(read)); capacity = read.capacity; mode = read.mode; num_wraps = read.wrap_counter; @@ -1548,7 +1548,7 @@ static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode) iwl_dbgfs_unregister(priv); - iwl_testmode_cleanup(priv); + iwl_testmode_free(priv); iwlagn_mac_unregister(priv); iwl_tt_exit(priv); @@ -1671,7 +1671,7 @@ static void iwl_dump_nic_error_log(struct iwl_priv *priv) } /*TODO: Update dbgfs with ISR error stats obtained below */ - iwl_read_targ_mem_words(trans, base, &table, sizeof(table)); + iwl_read_targ_mem_bytes(trans, base, &table, sizeof(table)); if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { IWL_ERR(trans, "Start IWL Error Log Dump:\n"); diff --git a/drivers/net/wireless/iwlwifi/dvm/rx.c b/drivers/net/wireless/iwlwifi/dvm/rx.c index 0ed90bb8b56a..c1f7a18e08dd 100644 --- a/drivers/net/wireless/iwlwifi/dvm/rx.c +++ b/drivers/net/wireless/iwlwifi/dvm/rx.c @@ -1124,8 +1124,6 @@ int iwl_rx_dispatch(struct iwl_op_mode *op_mode, struct iwl_rx_cmd_buffer *rxb, { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); - void (*pre_rx_handler)(struct iwl_priv *, - struct iwl_rx_cmd_buffer *); int err = 0; /* @@ -1135,19 +1133,19 @@ int iwl_rx_dispatch(struct iwl_op_mode *op_mode, struct iwl_rx_cmd_buffer *rxb, */ iwl_notification_wait_notify(&priv->notif_wait, pkt); - /* RX data may be forwarded to userspace (using pre_rx_handler) in one - * of two cases: the first, that the user owns the uCode through - * testmode - in such case the pre_rx_handler is set and no further - * processing takes place. The other case is when the user want to - * monitor the rx w/o affecting the regular flow - the pre_rx_handler - * will be set but the ownership flag != IWL_OWNERSHIP_TM and the flow +#ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE + /* + * RX data may be forwarded to userspace in one + * of two cases: the user owns the fw through testmode or when + * the user requested to monitor the rx w/o affecting the regular flow. + * In these cases the iwl_test object will handle forwarding the rx + * data to user space. + * Note that if the ownership flag != IWL_OWNERSHIP_TM the flow * continues. - * We need to use ACCESS_ONCE to prevent a case where the handler - * changes between the check and the call. */ - pre_rx_handler = ACCESS_ONCE(priv->pre_rx_handler); - if (pre_rx_handler) - pre_rx_handler(priv, rxb); + iwl_test_rx(&priv->tst, rxb); +#endif + if (priv->ucode_owner != IWL_OWNERSHIP_TM) { /* Based on type of command response or notification, * handle those that need handling via function in diff --git a/drivers/net/wireless/iwlwifi/dvm/testmode.c b/drivers/net/wireless/iwlwifi/dvm/testmode.c index a7b59590bb53..57b918ce3b5f 100644 --- a/drivers/net/wireless/iwlwifi/dvm/testmode.c +++ b/drivers/net/wireless/iwlwifi/dvm/testmode.c @@ -60,6 +60,7 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *****************************************************************************/ + #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> @@ -69,354 +70,83 @@ #include <net/cfg80211.h> #include <net/mac80211.h> #include <net/netlink.h> + #include "iwl-debug.h" -#include "iwl-io.h" #include "iwl-trans.h" -#include "iwl-fh.h" -#include "iwl-prph.h" #include "dev.h" #include "agn.h" -#include "testmode.h" - - -/* Periphery registers absolute lower bound. This is used in order to - * differentiate registery access through HBUS_TARG_PRPH_* and - * HBUS_TARG_MEM_* accesses. - */ -#define IWL_TM_ABS_PRPH_START (0xA00000) - -/* The TLVs used in the gnl message policy between the kernel module and - * user space application. iwl_testmode_gnl_msg_policy is to be carried - * through the NL80211_CMD_TESTMODE channel regulated by nl80211. - * See testmode.h - */ -static -struct nla_policy iwl_testmode_gnl_msg_policy[IWL_TM_ATTR_MAX] = { - [IWL_TM_ATTR_COMMAND] = { .type = NLA_U32, }, - - [IWL_TM_ATTR_UCODE_CMD_ID] = { .type = NLA_U8, }, - [IWL_TM_ATTR_UCODE_CMD_DATA] = { .type = NLA_UNSPEC, }, - - [IWL_TM_ATTR_REG_OFFSET] = { .type = NLA_U32, }, - [IWL_TM_ATTR_REG_VALUE8] = { .type = NLA_U8, }, - [IWL_TM_ATTR_REG_VALUE32] = { .type = NLA_U32, }, - - [IWL_TM_ATTR_SYNC_RSP] = { .type = NLA_UNSPEC, }, - [IWL_TM_ATTR_UCODE_RX_PKT] = { .type = NLA_UNSPEC, }, +#include "iwl-test.h" +#include "iwl-testmode.h" - [IWL_TM_ATTR_EEPROM] = { .type = NLA_UNSPEC, }, - - [IWL_TM_ATTR_TRACE_ADDR] = { .type = NLA_UNSPEC, }, - [IWL_TM_ATTR_TRACE_DUMP] = { .type = NLA_UNSPEC, }, - [IWL_TM_ATTR_TRACE_SIZE] = { .type = NLA_U32, }, - - [IWL_TM_ATTR_FIXRATE] = { .type = NLA_U32, }, - - [IWL_TM_ATTR_UCODE_OWNER] = { .type = NLA_U8, }, - - [IWL_TM_ATTR_MEM_ADDR] = { .type = NLA_U32, }, - [IWL_TM_ATTR_BUFFER_SIZE] = { .type = NLA_U32, }, - [IWL_TM_ATTR_BUFFER_DUMP] = { .type = NLA_UNSPEC, }, - - [IWL_TM_ATTR_FW_VERSION] = { .type = NLA_U32, }, - [IWL_TM_ATTR_DEVICE_ID] = { .type = NLA_U32, }, - [IWL_TM_ATTR_FW_TYPE] = { .type = NLA_U32, }, - [IWL_TM_ATTR_FW_INST_SIZE] = { .type = NLA_U32, }, - [IWL_TM_ATTR_FW_DATA_SIZE] = { .type = NLA_U32, }, - - [IWL_TM_ATTR_ENABLE_NOTIFICATION] = {.type = NLA_FLAG, }, -}; - -/* - * See the struct iwl_rx_packet in commands.h for the format of the - * received events from the device - */ -static inline int get_event_length(struct iwl_rx_cmd_buffer *rxb) +static int iwl_testmode_send_cmd(struct iwl_op_mode *op_mode, + struct iwl_host_cmd *cmd) { - struct iwl_rx_packet *pkt = rxb_addr(rxb); - if (pkt) - return le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; - else - return 0; + struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); + return iwl_dvm_send_cmd(priv, cmd); } - -/* - * This function multicasts the spontaneous messages from the device to the - * user space. It is invoked whenever there is a received messages - * from the device. This function is called within the ISR of the rx handlers - * in iwlagn driver. - * - * The parsing of the message content is left to the user space application, - * The message content is treated as unattacked raw data and is encapsulated - * with IWL_TM_ATTR_UCODE_RX_PKT multicasting to the user space. - * - * @priv: the instance of iwlwifi device - * @rxb: pointer to rx data content received by the ISR - * - * See the message policies and TLVs in iwl_testmode_gnl_msg_policy[]. - * For the messages multicasting to the user application, the mandatory - * TLV fields are : - * IWL_TM_ATTR_COMMAND must be IWL_TM_CMD_DEV2APP_UCODE_RX_PKT - * IWL_TM_ATTR_UCODE_RX_PKT for carrying the message content - */ - -static void iwl_testmode_ucode_rx_pkt(struct iwl_priv *priv, - struct iwl_rx_cmd_buffer *rxb) +static bool iwl_testmode_valid_hw_addr(u32 addr) { - struct ieee80211_hw *hw = priv->hw; - struct sk_buff *skb; - void *data; - int length; + if (iwlagn_hw_valid_rtc_data_addr(addr)) + return true; - data = (void *)rxb_addr(rxb); - length = get_event_length(rxb); + if (IWLAGN_RTC_INST_LOWER_BOUND <= addr && + addr < IWLAGN_RTC_INST_UPPER_BOUND) + return true; - if (!data || length == 0) - return; - - skb = cfg80211_testmode_alloc_event_skb(hw->wiphy, 20 + length, - GFP_ATOMIC); - if (skb == NULL) { - IWL_ERR(priv, - "Run out of memory for messages to user space ?\n"); - return; - } - if (nla_put_u32(skb, IWL_TM_ATTR_COMMAND, IWL_TM_CMD_DEV2APP_UCODE_RX_PKT) || - /* the length doesn't include len_n_flags field, so add it manually */ - nla_put(skb, IWL_TM_ATTR_UCODE_RX_PKT, length + sizeof(__le32), data)) - goto nla_put_failure; - cfg80211_testmode_event(skb, GFP_ATOMIC); - return; - -nla_put_failure: - kfree_skb(skb); - IWL_ERR(priv, "Ouch, overran buffer, check allocation!\n"); + return false; } -void iwl_testmode_init(struct iwl_priv *priv) +static u32 iwl_testmode_get_fw_ver(struct iwl_op_mode *op_mode) { - priv->pre_rx_handler = NULL; - priv->testmode_trace.trace_enabled = false; - priv->testmode_mem.read_in_progress = false; + struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); + return priv->fw->ucode_ver; } -static void iwl_mem_cleanup(struct iwl_priv *priv) +static struct sk_buff* +iwl_testmode_alloc_reply(struct iwl_op_mode *op_mode, int len) { - if (priv->testmode_mem.read_in_progress) { - kfree(priv->testmode_mem.buff_addr); - priv->testmode_mem.buff_addr = NULL; - priv->testmode_mem.buff_size = 0; - priv->testmode_mem.num_chunks = 0; - priv->testmode_mem.read_in_progress = false; - } + struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); + return cfg80211_testmode_alloc_reply_skb(priv->hw->wiphy, len); } -static void iwl_trace_cleanup(struct iwl_priv *priv) +static int iwl_testmode_reply(struct iwl_op_mode *op_mode, struct sk_buff *skb) { - if (priv->testmode_trace.trace_enabled) { - if (priv->testmode_trace.cpu_addr && - priv->testmode_trace.dma_addr) - dma_free_coherent(priv->trans->dev, - priv->testmode_trace.total_size, - priv->testmode_trace.cpu_addr, - priv->testmode_trace.dma_addr); - priv->testmode_trace.trace_enabled = false; - priv->testmode_trace.cpu_addr = NULL; - priv->testmode_trace.trace_addr = NULL; - priv->testmode_trace.dma_addr = 0; - priv->testmode_trace.buff_size = 0; - priv->testmode_trace.total_size = 0; - } + return cfg80211_testmode_reply(skb); } - -void iwl_testmode_cleanup(struct iwl_priv *priv) +static struct sk_buff *iwl_testmode_alloc_event(struct iwl_op_mode *op_mode, + int len) { - iwl_trace_cleanup(priv); - iwl_mem_cleanup(priv); + struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); + return cfg80211_testmode_alloc_event_skb(priv->hw->wiphy, len, + GFP_ATOMIC); } - -/* - * This function handles the user application commands to the ucode. - * - * It retrieves the mandatory fields IWL_TM_ATTR_UCODE_CMD_ID and - * IWL_TM_ATTR_UCODE_CMD_DATA and calls to the handler to send the - * host command to the ucode. - * - * If any mandatory field is missing, -ENOMSG is replied to the user space - * application; otherwise, waits for the host command to be sent and checks - * the return code. In case or error, it is returned, otherwise a reply is - * allocated and the reply RX packet - * is returned. - * - * @hw: ieee80211_hw object that represents the device - * @tb: gnl message fields from the user space - */ -static int iwl_testmode_ucode(struct ieee80211_hw *hw, struct nlattr **tb) +static void iwl_testmode_event(struct iwl_op_mode *op_mode, struct sk_buff *skb) { - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - struct iwl_host_cmd cmd; - struct iwl_rx_packet *pkt; - struct sk_buff *skb; - void *reply_buf; - u32 reply_len; - int ret; - bool cmd_want_skb; - - memset(&cmd, 0, sizeof(struct iwl_host_cmd)); - - if (!tb[IWL_TM_ATTR_UCODE_CMD_ID] || - !tb[IWL_TM_ATTR_UCODE_CMD_DATA]) { - IWL_ERR(priv, "Missing ucode command mandatory fields\n"); - return -ENOMSG; - } - - cmd.flags = CMD_ON_DEMAND | CMD_SYNC; - cmd_want_skb = nla_get_flag(tb[IWL_TM_ATTR_UCODE_CMD_SKB]); - if (cmd_want_skb) - cmd.flags |= CMD_WANT_SKB; - - cmd.id = nla_get_u8(tb[IWL_TM_ATTR_UCODE_CMD_ID]); - cmd.data[0] = nla_data(tb[IWL_TM_ATTR_UCODE_CMD_DATA]); - cmd.len[0] = nla_len(tb[IWL_TM_ATTR_UCODE_CMD_DATA]); - cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; - IWL_DEBUG_INFO(priv, "testmode ucode command ID 0x%x, flags 0x%x," - " len %d\n", cmd.id, cmd.flags, cmd.len[0]); - - ret = iwl_dvm_send_cmd(priv, &cmd); - if (ret) { - IWL_ERR(priv, "Failed to send hcmd\n"); - return ret; - } - if (!cmd_want_skb) - return ret; - - /* Handling return of SKB to the user */ - pkt = cmd.resp_pkt; - if (!pkt) { - IWL_ERR(priv, "HCMD received a null response packet\n"); - return ret; - } - - reply_len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; - skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, reply_len + 20); - reply_buf = kmalloc(reply_len, GFP_KERNEL); - if (!skb || !reply_buf) { - kfree_skb(skb); - kfree(reply_buf); - return -ENOMEM; - } - - /* The reply is in a page, that we cannot send to user space. */ - memcpy(reply_buf, &(pkt->hdr), reply_len); - iwl_free_resp(&cmd); - - if (nla_put_u32(skb, IWL_TM_ATTR_COMMAND, IWL_TM_CMD_DEV2APP_UCODE_RX_PKT) || - nla_put(skb, IWL_TM_ATTR_UCODE_RX_PKT, reply_len, reply_buf)) - goto nla_put_failure; - return cfg80211_testmode_reply(skb); - -nla_put_failure: - IWL_DEBUG_INFO(priv, "Failed creating NL attributes\n"); - return -ENOMSG; + return cfg80211_testmode_event(skb, GFP_ATOMIC); } +static struct iwl_test_ops tst_ops = { + .send_cmd = iwl_testmode_send_cmd, + .valid_hw_addr = iwl_testmode_valid_hw_addr, + .get_fw_ver = iwl_testmode_get_fw_ver, + .alloc_reply = iwl_testmode_alloc_reply, + .reply = iwl_testmode_reply, + .alloc_event = iwl_testmode_alloc_event, + .event = iwl_testmode_event, +}; -/* - * This function handles the user application commands for register access. - * - * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the - * handlers respectively. - * - * If it's an unknown commdn ID, -ENOSYS is returned; or -ENOMSG if the - * mandatory fields(IWL_TM_ATTR_REG_OFFSET,IWL_TM_ATTR_REG_VALUE32, - * IWL_TM_ATTR_REG_VALUE8) are missing; Otherwise 0 is replied indicating - * the success of the command execution. - * - * If IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_REG_READ32, the register read - * value is returned with IWL_TM_ATTR_REG_VALUE32. - * - * @hw: ieee80211_hw object that represents the device - * @tb: gnl message fields from the user space - */ -static int iwl_testmode_reg(struct ieee80211_hw *hw, struct nlattr **tb) +void iwl_testmode_init(struct iwl_priv *priv) { - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - u32 ofs, val32, cmd; - u8 val8; - struct sk_buff *skb; - int status = 0; - - if (!tb[IWL_TM_ATTR_REG_OFFSET]) { - IWL_ERR(priv, "Missing register offset\n"); - return -ENOMSG; - } - ofs = nla_get_u32(tb[IWL_TM_ATTR_REG_OFFSET]); - IWL_INFO(priv, "testmode register access command offset 0x%x\n", ofs); - - /* Allow access only to FH/CSR/HBUS in direct mode. - Since we don't have the upper bounds for the CSR and HBUS segments, - we will use only the upper bound of FH for sanity check. */ - cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]); - if ((cmd == IWL_TM_CMD_APP2DEV_DIRECT_REG_READ32 || - cmd == IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE32 || - cmd == IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE8) && - (ofs >= FH_MEM_UPPER_BOUND)) { - IWL_ERR(priv, "offset out of segment (0x0 - 0x%x)\n", - FH_MEM_UPPER_BOUND); - return -EINVAL; - } - - switch (cmd) { - case IWL_TM_CMD_APP2DEV_DIRECT_REG_READ32: - val32 = iwl_read_direct32(priv->trans, ofs); - IWL_INFO(priv, "32bit value to read 0x%x\n", val32); - - skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20); - if (!skb) { - IWL_ERR(priv, "Memory allocation fail\n"); - return -ENOMEM; - } - if (nla_put_u32(skb, IWL_TM_ATTR_REG_VALUE32, val32)) - goto nla_put_failure; - status = cfg80211_testmode_reply(skb); - if (status < 0) - IWL_ERR(priv, "Error sending msg : %d\n", status); - break; - case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE32: - if (!tb[IWL_TM_ATTR_REG_VALUE32]) { - IWL_ERR(priv, "Missing value to write\n"); - return -ENOMSG; - } else { - val32 = nla_get_u32(tb[IWL_TM_ATTR_REG_VALUE32]); - IWL_INFO(priv, "32bit value to write 0x%x\n", val32); - iwl_write_direct32(priv->trans, ofs, val32); - } - break; - case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE8: - if (!tb[IWL_TM_ATTR_REG_VALUE8]) { - IWL_ERR(priv, "Missing value to write\n"); - return -ENOMSG; - } else { - val8 = nla_get_u8(tb[IWL_TM_ATTR_REG_VALUE8]); - IWL_INFO(priv, "8bit value to write 0x%x\n", val8); - iwl_write8(priv->trans, ofs, val8); - } - break; - default: - IWL_ERR(priv, "Unknown testmode register command ID\n"); - return -ENOSYS; - } - - return status; - -nla_put_failure: - kfree_skb(skb); - return -EMSGSIZE; + iwl_test_init(&priv->tst, priv->trans, &tst_ops); } +void iwl_testmode_free(struct iwl_priv *priv) +{ + iwl_test_free(&priv->tst); +} static int iwl_testmode_cfg_init_calib(struct iwl_priv *priv) { @@ -469,7 +199,7 @@ static int iwl_testmode_driver(struct ieee80211_hw *hw, struct nlattr **tb) struct sk_buff *skb; unsigned char *rsp_data_ptr = NULL; int status = 0, rsp_data_len = 0; - u32 devid, inst_size = 0, data_size = 0; + u32 inst_size = 0, data_size = 0; const struct fw_img *img; switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { @@ -563,39 +293,6 @@ static int iwl_testmode_driver(struct ieee80211_hw *hw, struct nlattr **tb) priv->tm_fixed_rate = nla_get_u32(tb[IWL_TM_ATTR_FIXRATE]); break; - case IWL_TM_CMD_APP2DEV_GET_FW_VERSION: - IWL_INFO(priv, "uCode version raw: 0x%x\n", - priv->fw->ucode_ver); - - skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20); - if (!skb) { - IWL_ERR(priv, "Memory allocation fail\n"); - return -ENOMEM; - } - if (nla_put_u32(skb, IWL_TM_ATTR_FW_VERSION, - priv->fw->ucode_ver)) - goto nla_put_failure; - status = cfg80211_testmode_reply(skb); - if (status < 0) - IWL_ERR(priv, "Error sending msg : %d\n", status); - break; - - case IWL_TM_CMD_APP2DEV_GET_DEVICE_ID: - devid = priv->trans->hw_id; - IWL_INFO(priv, "hw version: 0x%x\n", devid); - - skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20); - if (!skb) { - IWL_ERR(priv, "Memory allocation fail\n"); - return -ENOMEM; - } - if (nla_put_u32(skb, IWL_TM_ATTR_DEVICE_ID, devid)) - goto nla_put_failure; - status = cfg80211_testmode_reply(skb); - if (status < 0) - IWL_ERR(priv, "Error sending msg : %d\n", status); - break; - case IWL_TM_CMD_APP2DEV_GET_FW_INFO: skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20 + 8); if (!skb) { @@ -630,125 +327,6 @@ nla_put_failure: return -EMSGSIZE; } - -/* - * This function handles the user application commands for uCode trace - * - * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the - * handlers respectively. - * - * If it's an unknown commdn ID, -ENOSYS is replied; otherwise, the returned - * value of the actual command execution is replied to the user application. - * - * @hw: ieee80211_hw object that represents the device - * @tb: gnl message fields from the user space - */ -static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb) -{ - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - struct sk_buff *skb; - int status = 0; - struct device *dev = priv->trans->dev; - - switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { - case IWL_TM_CMD_APP2DEV_BEGIN_TRACE: - if (priv->testmode_trace.trace_enabled) - return -EBUSY; - - if (!tb[IWL_TM_ATTR_TRACE_SIZE]) - priv->testmode_trace.buff_size = TRACE_BUFF_SIZE_DEF; - else - priv->testmode_trace.buff_size = - nla_get_u32(tb[IWL_TM_ATTR_TRACE_SIZE]); - if (!priv->testmode_trace.buff_size) - return -EINVAL; - if (priv->testmode_trace.buff_size < TRACE_BUFF_SIZE_MIN || - priv->testmode_trace.buff_size > TRACE_BUFF_SIZE_MAX) - return -EINVAL; - - priv->testmode_trace.total_size = - priv->testmode_trace.buff_size + TRACE_BUFF_PADD; - priv->testmode_trace.cpu_addr = - dma_alloc_coherent(dev, - priv->testmode_trace.total_size, - &priv->testmode_trace.dma_addr, - GFP_KERNEL); - if (!priv->testmode_trace.cpu_addr) - return -ENOMEM; - priv->testmode_trace.trace_enabled = true; - priv->testmode_trace.trace_addr = (u8 *)PTR_ALIGN( - priv->testmode_trace.cpu_addr, 0x100); - memset(priv->testmode_trace.trace_addr, 0x03B, - priv->testmode_trace.buff_size); - skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, - sizeof(priv->testmode_trace.dma_addr) + 20); - if (!skb) { - IWL_ERR(priv, "Memory allocation fail\n"); - iwl_trace_cleanup(priv); - return -ENOMEM; - } - if (nla_put(skb, IWL_TM_ATTR_TRACE_ADDR, - sizeof(priv->testmode_trace.dma_addr), - (u64 *)&priv->testmode_trace.dma_addr)) - goto nla_put_failure; - status = cfg80211_testmode_reply(skb); - if (status < 0) { - IWL_ERR(priv, "Error sending msg : %d\n", status); - } - priv->testmode_trace.num_chunks = - DIV_ROUND_UP(priv->testmode_trace.buff_size, - DUMP_CHUNK_SIZE); - break; - - case IWL_TM_CMD_APP2DEV_END_TRACE: - iwl_trace_cleanup(priv); - break; - default: - IWL_ERR(priv, "Unknown testmode mem command ID\n"); - return -ENOSYS; - } - return status; - -nla_put_failure: - kfree_skb(skb); - if (nla_get_u32(tb[IWL_TM_ATTR_COMMAND]) == - IWL_TM_CMD_APP2DEV_BEGIN_TRACE) - iwl_trace_cleanup(priv); - return -EMSGSIZE; -} - -static int iwl_testmode_trace_dump(struct ieee80211_hw *hw, - struct sk_buff *skb, - struct netlink_callback *cb) -{ - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - int idx, length; - - if (priv->testmode_trace.trace_enabled && - priv->testmode_trace.trace_addr) { - idx = cb->args[4]; - if (idx >= priv->testmode_trace.num_chunks) - return -ENOENT; - length = DUMP_CHUNK_SIZE; - if (((idx + 1) == priv->testmode_trace.num_chunks) && - (priv->testmode_trace.buff_size % DUMP_CHUNK_SIZE)) - length = priv->testmode_trace.buff_size % - DUMP_CHUNK_SIZE; - - if (nla_put(skb, IWL_TM_ATTR_TRACE_DUMP, length, - priv->testmode_trace.trace_addr + - (DUMP_CHUNK_SIZE * idx))) - goto nla_put_failure; - idx++; - cb->args[4] = idx; - return 0; - } else - return -EFAULT; - - nla_put_failure: - return -ENOBUFS; -} - /* * This function handles the user application switch ucode ownership. * @@ -777,10 +355,10 @@ static int iwl_testmode_ownership(struct ieee80211_hw *hw, struct nlattr **tb) owner = nla_get_u8(tb[IWL_TM_ATTR_UCODE_OWNER]); if (owner == IWL_OWNERSHIP_DRIVER) { priv->ucode_owner = owner; - priv->pre_rx_handler = NULL; + iwl_test_enable_notifications(&priv->tst, false); } else if (owner == IWL_OWNERSHIP_TM) { - priv->pre_rx_handler = iwl_testmode_ucode_rx_pkt; priv->ucode_owner = owner; + iwl_test_enable_notifications(&priv->tst, true); } else { IWL_ERR(priv, "Invalid owner\n"); return -EINVAL; @@ -788,180 +366,6 @@ static int iwl_testmode_ownership(struct ieee80211_hw *hw, struct nlattr **tb) return 0; } -static int iwl_testmode_indirect_read(struct iwl_priv *priv, u32 addr, u32 size) -{ - struct iwl_trans *trans = priv->trans; - unsigned long flags; - int i; - - if (size & 0x3) - return -EINVAL; - priv->testmode_mem.buff_size = size; - priv->testmode_mem.buff_addr = - kmalloc(priv->testmode_mem.buff_size, GFP_KERNEL); - if (priv->testmode_mem.buff_addr == NULL) - return -ENOMEM; - - /* Hard-coded periphery absolute address */ - if (IWL_TM_ABS_PRPH_START <= addr && - addr < IWL_TM_ABS_PRPH_START + PRPH_END) { - spin_lock_irqsave(&trans->reg_lock, flags); - iwl_grab_nic_access(trans); - iwl_write32(trans, HBUS_TARG_PRPH_RADDR, - addr | (3 << 24)); - for (i = 0; i < size; i += 4) - *(u32 *)(priv->testmode_mem.buff_addr + i) = - iwl_read32(trans, HBUS_TARG_PRPH_RDAT); - iwl_release_nic_access(trans); - spin_unlock_irqrestore(&trans->reg_lock, flags); - } else { /* target memory (SRAM) */ - _iwl_read_targ_mem_words(trans, addr, - priv->testmode_mem.buff_addr, - priv->testmode_mem.buff_size / 4); - } - - priv->testmode_mem.num_chunks = - DIV_ROUND_UP(priv->testmode_mem.buff_size, DUMP_CHUNK_SIZE); - priv->testmode_mem.read_in_progress = true; - return 0; - -} - -static int iwl_testmode_indirect_write(struct iwl_priv *priv, u32 addr, - u32 size, unsigned char *buf) -{ - struct iwl_trans *trans = priv->trans; - u32 val, i; - unsigned long flags; - - if (IWL_TM_ABS_PRPH_START <= addr && - addr < IWL_TM_ABS_PRPH_START + PRPH_END) { - /* Periphery writes can be 1-3 bytes long, or DWORDs */ - if (size < 4) { - memcpy(&val, buf, size); - spin_lock_irqsave(&trans->reg_lock, flags); - iwl_grab_nic_access(trans); - iwl_write32(trans, HBUS_TARG_PRPH_WADDR, - (addr & 0x0000FFFF) | - ((size - 1) << 24)); - iwl_write32(trans, HBUS_TARG_PRPH_WDAT, val); - iwl_release_nic_access(trans); - /* needed after consecutive writes w/o read */ - mmiowb(); - spin_unlock_irqrestore(&trans->reg_lock, flags); - } else { - if (size % 4) - return -EINVAL; - for (i = 0; i < size; i += 4) - iwl_write_prph(trans, addr+i, - *(u32 *)(buf+i)); - } - } else if (iwlagn_hw_valid_rtc_data_addr(addr) || - (IWLAGN_RTC_INST_LOWER_BOUND <= addr && - addr < IWLAGN_RTC_INST_UPPER_BOUND)) { - _iwl_write_targ_mem_words(trans, addr, buf, size/4); - } else - return -EINVAL; - 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_indirect_mem(struct ieee80211_hw *hw, - struct nlattr **tb) -{ - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - u32 addr, size, cmd; - unsigned char *buf; - - /* Both read and write should be blocked, for atomicity */ - if (priv->testmode_mem.read_in_progress) - return -EBUSY; - - cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]); - if (!tb[IWL_TM_ATTR_MEM_ADDR]) { - IWL_ERR(priv, "Error finding memory offset address\n"); - return -ENOMSG; - } - addr = nla_get_u32(tb[IWL_TM_ATTR_MEM_ADDR]); - if (!tb[IWL_TM_ATTR_BUFFER_SIZE]) { - IWL_ERR(priv, "Error finding size for memory reading\n"); - return -ENOMSG; - } - size = nla_get_u32(tb[IWL_TM_ATTR_BUFFER_SIZE]); - - if (cmd == IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_READ) - return iwl_testmode_indirect_read(priv, addr, size); - else { - if (!tb[IWL_TM_ATTR_BUFFER_DUMP]) - return -EINVAL; - buf = (unsigned char *) nla_data(tb[IWL_TM_ATTR_BUFFER_DUMP]); - return iwl_testmode_indirect_write(priv, addr, size, buf); - } -} - -static int iwl_testmode_buffer_dump(struct ieee80211_hw *hw, - struct sk_buff *skb, - struct netlink_callback *cb) -{ - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - int idx, length; - - if (priv->testmode_mem.read_in_progress) { - idx = cb->args[4]; - if (idx >= priv->testmode_mem.num_chunks) { - iwl_mem_cleanup(priv); - return -ENOENT; - } - length = DUMP_CHUNK_SIZE; - if (((idx + 1) == priv->testmode_mem.num_chunks) && - (priv->testmode_mem.buff_size % DUMP_CHUNK_SIZE)) - length = priv->testmode_mem.buff_size % - DUMP_CHUNK_SIZE; - - if (nla_put(skb, IWL_TM_ATTR_BUFFER_DUMP, length, - priv->testmode_mem.buff_addr + - (DUMP_CHUNK_SIZE * idx))) - goto nla_put_failure; - idx++; - cb->args[4] = idx; - return 0; - } else - return -EFAULT; - - nla_put_failure: - return -ENOBUFS; -} - -static int iwl_testmode_notifications(struct ieee80211_hw *hw, - struct nlattr **tb) -{ - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - bool enable; - - enable = nla_get_flag(tb[IWL_TM_ATTR_ENABLE_NOTIFICATION]); - if (enable) - priv->pre_rx_handler = iwl_testmode_ucode_rx_pkt; - else - priv->pre_rx_handler = NULL; - return 0; -} - - /* 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 * invoke the corresponding handlers. @@ -987,32 +391,27 @@ int iwlagn_mac_testmode_cmd(struct ieee80211_hw *hw, void *data, int len) struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); int result; - result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len, - iwl_testmode_gnl_msg_policy); - if (result != 0) { - IWL_ERR(priv, "Error parsing the gnl message : %d\n", result); + result = iwl_test_parse(&priv->tst, tb, data, len); + if (result) return result; - } - /* IWL_TM_ATTR_COMMAND is absolutely mandatory */ - if (!tb[IWL_TM_ATTR_COMMAND]) { - IWL_ERR(priv, "Missing testmode command type\n"); - return -ENOMSG; - } /* in case multiple accesses to the device happens */ mutex_lock(&priv->mutex); - switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { case IWL_TM_CMD_APP2DEV_UCODE: - IWL_DEBUG_INFO(priv, "testmode cmd to uCode\n"); - result = iwl_testmode_ucode(hw, tb); - break; case IWL_TM_CMD_APP2DEV_DIRECT_REG_READ32: case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE32: case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE8: - IWL_DEBUG_INFO(priv, "testmode cmd to register\n"); - result = iwl_testmode_reg(hw, tb); + case IWL_TM_CMD_APP2DEV_BEGIN_TRACE: + case IWL_TM_CMD_APP2DEV_END_TRACE: + case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_READ: + case IWL_TM_CMD_APP2DEV_NOTIFICATIONS: + case IWL_TM_CMD_APP2DEV_GET_FW_VERSION: + case IWL_TM_CMD_APP2DEV_GET_DEVICE_ID: + case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_WRITE: + result = iwl_test_handle_cmd(&priv->tst, tb); break; + case IWL_TM_CMD_APP2DEV_GET_DEVICENAME: case IWL_TM_CMD_APP2DEV_LOAD_INIT_FW: case IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB: @@ -1020,45 +419,25 @@ int iwlagn_mac_testmode_cmd(struct ieee80211_hw *hw, void *data, int len) case IWL_TM_CMD_APP2DEV_GET_EEPROM: case IWL_TM_CMD_APP2DEV_FIXRATE_REQ: case IWL_TM_CMD_APP2DEV_LOAD_WOWLAN_FW: - case IWL_TM_CMD_APP2DEV_GET_FW_VERSION: - case IWL_TM_CMD_APP2DEV_GET_DEVICE_ID: case IWL_TM_CMD_APP2DEV_GET_FW_INFO: IWL_DEBUG_INFO(priv, "testmode cmd to driver\n"); result = iwl_testmode_driver(hw, tb); break; - case IWL_TM_CMD_APP2DEV_BEGIN_TRACE: - case IWL_TM_CMD_APP2DEV_END_TRACE: - case IWL_TM_CMD_APP2DEV_READ_TRACE: - IWL_DEBUG_INFO(priv, "testmode uCode trace cmd to driver\n"); - result = iwl_testmode_trace(hw, tb); - break; - case IWL_TM_CMD_APP2DEV_OWNERSHIP: IWL_DEBUG_INFO(priv, "testmode change uCode ownership\n"); result = iwl_testmode_ownership(hw, tb); break; - case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_READ: - case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_WRITE: - IWL_DEBUG_INFO(priv, "testmode indirect memory cmd " - "to driver\n"); - result = iwl_testmode_indirect_mem(hw, tb); - break; - - case IWL_TM_CMD_APP2DEV_NOTIFICATIONS: - IWL_DEBUG_INFO(priv, "testmode notifications cmd " - "to driver\n"); - result = iwl_testmode_notifications(hw, tb); - break; - default: IWL_ERR(priv, "Unknown testmode command\n"); result = -ENOSYS; break; } - mutex_unlock(&priv->mutex); + + if (result) + IWL_ERR(priv, "Test cmd failed result=%d\n", result); return result; } @@ -1066,7 +445,6 @@ int iwlagn_mac_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *skb, struct netlink_callback *cb, void *data, int len) { - struct nlattr *tb[IWL_TM_ATTR_MAX]; struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); int result; u32 cmd; @@ -1075,39 +453,19 @@ int iwlagn_mac_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *skb, /* offset by 1 since commands start at 0 */ cmd = cb->args[3] - 1; } else { - result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len, - iwl_testmode_gnl_msg_policy); - if (result) { - IWL_ERR(priv, - "Error parsing the gnl message : %d\n", result); + struct nlattr *tb[IWL_TM_ATTR_MAX]; + + result = iwl_test_parse(&priv->tst, tb, data, len); + if (result) return result; - } - /* IWL_TM_ATTR_COMMAND is absolutely mandatory */ - if (!tb[IWL_TM_ATTR_COMMAND]) { - IWL_ERR(priv, "Missing testmode command type\n"); - return -ENOMSG; - } cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]); cb->args[3] = cmd + 1; } /* in case multiple accesses to the device happens */ mutex_lock(&priv->mutex); - switch (cmd) { - case IWL_TM_CMD_APP2DEV_READ_TRACE: - IWL_DEBUG_INFO(priv, "uCode trace cmd to driver\n"); - result = iwl_testmode_trace_dump(hw, skb, cb); - break; - case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_DUMP: - IWL_DEBUG_INFO(priv, "testmode sram dump cmd to driver\n"); - result = iwl_testmode_buffer_dump(hw, skb, cb); - break; - default: - result = -EINVAL; - break; - } - + result = iwl_test_dump(&priv->tst, cmd, skb, cb); mutex_unlock(&priv->mutex); return result; } diff --git a/drivers/net/wireless/iwlwifi/dvm/tx.c b/drivers/net/wireless/iwlwifi/dvm/tx.c index 0dfaf649b257..1f9457fdb933 100644 --- a/drivers/net/wireless/iwlwifi/dvm/tx.c +++ b/drivers/net/wireless/iwlwifi/dvm/tx.c @@ -403,6 +403,7 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) info->driver_data[0] = ctx; info->driver_data[1] = dev_cmd; + /* From now on, we cannot access info->control */ spin_lock(&priv->sta_lock); diff --git a/drivers/net/wireless/iwlwifi/iwl-drv.c b/drivers/net/wireless/iwlwifi/iwl-drv.c index 49df0e9d5c5f..80898bb808b5 100644 --- a/drivers/net/wireless/iwlwifi/iwl-drv.c +++ b/drivers/net/wireless/iwlwifi/iwl-drv.c @@ -131,6 +131,8 @@ struct iwl_drv { #define DVM_OP_MODE 0 #define MVM_OP_MODE 1 +/* Protects the table contents, i.e. the ops pointer & drv list */ +static struct mutex iwlwifi_opmode_table_mtx; static struct iwlwifi_opmode_table { const char *name; /* name: iwldvm, iwlmvm, etc */ const struct iwl_op_mode_ops *ops; /* pointer to op_mode ops */ @@ -898,6 +900,7 @@ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context) /* We have our copies now, allow OS release its copies */ release_firmware(ucode_raw); + mutex_lock(&iwlwifi_opmode_table_mtx); op = &iwlwifi_opmode_table[DVM_OP_MODE]; /* add this device to the list of devices using this op_mode */ @@ -912,6 +915,7 @@ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context) } else { request_module_nowait("%s", op->name); } + mutex_unlock(&iwlwifi_opmode_table_mtx); /* * Complete the firmware request last so that @@ -952,6 +956,7 @@ struct iwl_drv *iwl_drv_start(struct iwl_trans *trans, drv->cfg = cfg; init_completion(&drv->request_firmware_complete); + INIT_LIST_HEAD(&drv->list); ret = iwl_request_firmware(drv, true); @@ -974,6 +979,16 @@ void iwl_drv_stop(struct iwl_drv *drv) iwl_dealloc_ucode(drv); + mutex_lock(&iwlwifi_opmode_table_mtx); + /* + * List is empty (this item wasn't added) + * when firmware loading failed -- in that + * case we can't remove it from any list. + */ + if (!list_empty(&drv->list)) + list_del(&drv->list); + mutex_unlock(&iwlwifi_opmode_table_mtx); + kfree(drv); } @@ -996,6 +1011,7 @@ int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops) int i; struct iwl_drv *drv; + mutex_lock(&iwlwifi_opmode_table_mtx); for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) { if (strcmp(iwlwifi_opmode_table[i].name, name)) continue; @@ -1003,8 +1019,10 @@ int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops) list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list) drv->op_mode = ops->start(drv->trans, drv->cfg, &drv->fw); + mutex_unlock(&iwlwifi_opmode_table_mtx); return 0; } + mutex_unlock(&iwlwifi_opmode_table_mtx); return -EIO; } EXPORT_SYMBOL_GPL(iwl_opmode_register); @@ -1014,6 +1032,7 @@ void iwl_opmode_deregister(const char *name) int i; struct iwl_drv *drv; + mutex_lock(&iwlwifi_opmode_table_mtx); for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) { if (strcmp(iwlwifi_opmode_table[i].name, name)) continue; @@ -1026,8 +1045,10 @@ void iwl_opmode_deregister(const char *name) drv->op_mode = NULL; } } + mutex_unlock(&iwlwifi_opmode_table_mtx); return; } + mutex_unlock(&iwlwifi_opmode_table_mtx); } EXPORT_SYMBOL_GPL(iwl_opmode_deregister); @@ -1035,6 +1056,8 @@ static int __init iwl_drv_init(void) { int i; + mutex_init(&iwlwifi_opmode_table_mtx); + for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv); diff --git a/drivers/net/wireless/iwlwifi/iwl-fh.h b/drivers/net/wireless/iwlwifi/iwl-fh.h index 74bce97a8600..806046641747 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fh.h +++ b/drivers/net/wireless/iwlwifi/iwl-fh.h @@ -421,6 +421,8 @@ static inline unsigned int FH_MEM_CBBC_QUEUE(unsigned int chnl) (FH_SRVC_LOWER_BOUND + ((_chnl) - 9) * 0x4) #define FH_TX_CHICKEN_BITS_REG (FH_MEM_LOWER_BOUND + 0xE98) +#define FH_TX_TRB_REG(_chan) (FH_MEM_LOWER_BOUND + 0x958 + (_chan) * 4) + /* Instruct FH to increment the retry count of a packet when * it is brought from the memory to TX-FIFO */ diff --git a/drivers/net/wireless/iwlwifi/iwl-io.c b/drivers/net/wireless/iwlwifi/iwl-io.c index 5f2df70b73c1..66c873399aba 100644 --- a/drivers/net/wireless/iwlwifi/iwl-io.c +++ b/drivers/net/wireless/iwlwifi/iwl-io.c @@ -298,8 +298,8 @@ void iwl_clear_bits_prph(struct iwl_trans *trans, u32 reg, u32 mask) } EXPORT_SYMBOL_GPL(iwl_clear_bits_prph); -void _iwl_read_targ_mem_words(struct iwl_trans *trans, u32 addr, - void *buf, int words) +void _iwl_read_targ_mem_dwords(struct iwl_trans *trans, u32 addr, + void *buf, int dwords) { unsigned long flags; int offs; @@ -308,26 +308,26 @@ void _iwl_read_targ_mem_words(struct iwl_trans *trans, u32 addr, spin_lock_irqsave(&trans->reg_lock, flags); if (likely(iwl_grab_nic_access(trans))) { iwl_write32(trans, HBUS_TARG_MEM_RADDR, addr); - for (offs = 0; offs < words; offs++) + for (offs = 0; offs < dwords; offs++) vals[offs] = iwl_read32(trans, HBUS_TARG_MEM_RDAT); iwl_release_nic_access(trans); } spin_unlock_irqrestore(&trans->reg_lock, flags); } -EXPORT_SYMBOL_GPL(_iwl_read_targ_mem_words); +EXPORT_SYMBOL_GPL(_iwl_read_targ_mem_dwords); u32 iwl_read_targ_mem(struct iwl_trans *trans, u32 addr) { u32 value; - _iwl_read_targ_mem_words(trans, addr, &value, 1); + _iwl_read_targ_mem_dwords(trans, addr, &value, 1); return value; } EXPORT_SYMBOL_GPL(iwl_read_targ_mem); -int _iwl_write_targ_mem_words(struct iwl_trans *trans, u32 addr, - void *buf, int words) +int _iwl_write_targ_mem_dwords(struct iwl_trans *trans, u32 addr, + void *buf, int dwords) { unsigned long flags; int offs, result = 0; @@ -336,7 +336,7 @@ int _iwl_write_targ_mem_words(struct iwl_trans *trans, u32 addr, spin_lock_irqsave(&trans->reg_lock, flags); if (likely(iwl_grab_nic_access(trans))) { iwl_write32(trans, HBUS_TARG_MEM_WADDR, addr); - for (offs = 0; offs < words; offs++) + for (offs = 0; offs < dwords; offs++) iwl_write32(trans, HBUS_TARG_MEM_WDAT, vals[offs]); iwl_release_nic_access(trans); } else @@ -345,10 +345,10 @@ int _iwl_write_targ_mem_words(struct iwl_trans *trans, u32 addr, return result; } -EXPORT_SYMBOL_GPL(_iwl_write_targ_mem_words); +EXPORT_SYMBOL_GPL(_iwl_write_targ_mem_dwords); int iwl_write_targ_mem(struct iwl_trans *trans, u32 addr, u32 val) { - return _iwl_write_targ_mem_words(trans, addr, &val, 1); + return _iwl_write_targ_mem_dwords(trans, addr, &val, 1); } EXPORT_SYMBOL_GPL(iwl_write_targ_mem); diff --git a/drivers/net/wireless/iwlwifi/iwl-io.h b/drivers/net/wireless/iwlwifi/iwl-io.h index 4a9a45f771ed..50d3819739d1 100644 --- a/drivers/net/wireless/iwlwifi/iwl-io.h +++ b/drivers/net/wireless/iwlwifi/iwl-io.h @@ -76,18 +76,18 @@ void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 reg, u32 bits, u32 mask); void iwl_clear_bits_prph(struct iwl_trans *trans, u32 reg, u32 mask); -void _iwl_read_targ_mem_words(struct iwl_trans *trans, u32 addr, - void *buf, int words); +void _iwl_read_targ_mem_dwords(struct iwl_trans *trans, u32 addr, + void *buf, int dwords); -#define iwl_read_targ_mem_words(trans, addr, buf, bufsize) \ +#define iwl_read_targ_mem_bytes(trans, addr, buf, bufsize) \ do { \ BUILD_BUG_ON((bufsize) % sizeof(u32)); \ - _iwl_read_targ_mem_words(trans, addr, buf, \ - (bufsize) / sizeof(u32));\ + _iwl_read_targ_mem_dwords(trans, addr, buf, \ + (bufsize) / sizeof(u32));\ } while (0) -int _iwl_write_targ_mem_words(struct iwl_trans *trans, u32 addr, - void *buf, int words); +int _iwl_write_targ_mem_dwords(struct iwl_trans *trans, u32 addr, + void *buf, int dwords); u32 iwl_read_targ_mem(struct iwl_trans *trans, u32 addr); int iwl_write_targ_mem(struct iwl_trans *trans, u32 addr, u32 val); diff --git a/drivers/net/wireless/iwlwifi/iwl-test.c b/drivers/net/wireless/iwlwifi/iwl-test.c new file mode 100644 index 000000000000..81e8c7126d72 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-test.c @@ -0,0 +1,856 @@ +/****************************************************************************** + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2010 - 2012 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, + * USA + * + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + * BSD LICENSE + * + * Copyright(c) 2010 - 2012 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + *****************************************************************************/ + +#include <linux/export.h> +#include <net/netlink.h> + +#include "iwl-io.h" +#include "iwl-fh.h" +#include "iwl-prph.h" +#include "iwl-trans.h" +#include "iwl-test.h" +#include "iwl-csr.h" +#include "iwl-testmode.h" + +/* + * Periphery registers absolute lower bound. This is used in order to + * differentiate registery access through HBUS_TARG_PRPH_* and + * HBUS_TARG_MEM_* accesses. + */ +#define IWL_ABS_PRPH_START (0xA00000) + +/* + * The TLVs used in the gnl message policy between the kernel module and + * user space application. iwl_testmode_gnl_msg_policy is to be carried + * through the NL80211_CMD_TESTMODE channel regulated by nl80211. + * See iwl-testmode.h + */ +static +struct nla_policy iwl_testmode_gnl_msg_policy[IWL_TM_ATTR_MAX] = { + [IWL_TM_ATTR_COMMAND] = { .type = NLA_U32, }, + + [IWL_TM_ATTR_UCODE_CMD_ID] = { .type = NLA_U8, }, + [IWL_TM_ATTR_UCODE_CMD_DATA] = { .type = NLA_UNSPEC, }, + + [IWL_TM_ATTR_REG_OFFSET] = { .type = NLA_U32, }, + [IWL_TM_ATTR_REG_VALUE8] = { .type = NLA_U8, }, + [IWL_TM_ATTR_REG_VALUE32] = { .type = NLA_U32, }, + + [IWL_TM_ATTR_SYNC_RSP] = { .type = NLA_UNSPEC, }, + [IWL_TM_ATTR_UCODE_RX_PKT] = { .type = NLA_UNSPEC, }, + + [IWL_TM_ATTR_EEPROM] = { .type = NLA_UNSPEC, }, + + [IWL_TM_ATTR_TRACE_ADDR] = { .type = NLA_UNSPEC, }, + [IWL_TM_ATTR_TRACE_DUMP] = { .type = NLA_UNSPEC, }, + [IWL_TM_ATTR_TRACE_SIZE] = { .type = NLA_U32, }, + + [IWL_TM_ATTR_FIXRATE] = { .type = NLA_U32, }, + + [IWL_TM_ATTR_UCODE_OWNER] = { .type = NLA_U8, }, + + [IWL_TM_ATTR_MEM_ADDR] = { .type = NLA_U32, }, + [IWL_TM_ATTR_BUFFER_SIZE] = { .type = NLA_U32, }, + [IWL_TM_ATTR_BUFFER_DUMP] = { .type = NLA_UNSPEC, }, + + [IWL_TM_ATTR_FW_VERSION] = { .type = NLA_U32, }, + [IWL_TM_ATTR_DEVICE_ID] = { .type = NLA_U32, }, + [IWL_TM_ATTR_FW_TYPE] = { .type = NLA_U32, }, + [IWL_TM_ATTR_FW_INST_SIZE] = { .type = NLA_U32, }, + [IWL_TM_ATTR_FW_DATA_SIZE] = { .type = NLA_U32, }, + + [IWL_TM_ATTR_ENABLE_NOTIFICATION] = {.type = NLA_FLAG, }, +}; + +static inline void iwl_test_trace_clear(struct iwl_test *tst) +{ + memset(&tst->trace, 0, sizeof(struct iwl_test_trace)); +} + +static void iwl_test_trace_stop(struct iwl_test *tst) +{ + if (!tst->trace.enabled) + return; + + if (tst->trace.cpu_addr && tst->trace.dma_addr) + dma_free_coherent(tst->trans->dev, + tst->trace.tsize, + tst->trace.cpu_addr, + tst->trace.dma_addr); + + iwl_test_trace_clear(tst); +} + +static inline void iwl_test_mem_clear(struct iwl_test *tst) +{ + memset(&tst->mem, 0, sizeof(struct iwl_test_mem)); +} + +static inline void iwl_test_mem_stop(struct iwl_test *tst) +{ + if (!tst->mem.in_read) + return; + + iwl_test_mem_clear(tst); +} + +/* + * Initializes the test object + * During the lifetime of the test object it is assumed that the transport is + * started. The test object should be stopped before the transport is stopped. + */ +void iwl_test_init(struct iwl_test *tst, struct iwl_trans *trans, + struct iwl_test_ops *ops) +{ + tst->trans = trans; + tst->ops = ops; + + iwl_test_trace_clear(tst); + iwl_test_mem_clear(tst); +} +EXPORT_SYMBOL_GPL(iwl_test_init); + +/* + * Stop the test object + */ +void iwl_test_free(struct iwl_test *tst) +{ + iwl_test_mem_stop(tst); + iwl_test_trace_stop(tst); +} +EXPORT_SYMBOL_GPL(iwl_test_free); + +static inline int iwl_test_send_cmd(struct iwl_test *tst, + struct iwl_host_cmd *cmd) +{ + return tst->ops->send_cmd(tst->trans->op_mode, cmd); +} + +static inline bool iwl_test_valid_hw_addr(struct iwl_test *tst, u32 addr) +{ + return tst->ops->valid_hw_addr(addr); +} + +static inline u32 iwl_test_fw_ver(struct iwl_test *tst) +{ + return tst->ops->get_fw_ver(tst->trans->op_mode); +} + +static inline struct sk_buff* +iwl_test_alloc_reply(struct iwl_test *tst, int len) +{ + return tst->ops->alloc_reply(tst->trans->op_mode, len); +} + +static inline int iwl_test_reply(struct iwl_test *tst, struct sk_buff *skb) +{ + return tst->ops->reply(tst->trans->op_mode, skb); +} + +static inline struct sk_buff* +iwl_test_alloc_event(struct iwl_test *tst, int len) +{ + return tst->ops->alloc_event(tst->trans->op_mode, len); +} + +static inline void +iwl_test_event(struct iwl_test *tst, struct sk_buff *skb) +{ + return tst->ops->event(tst->trans->op_mode, skb); +} + +/* + * This function handles the user application commands to the fw. The fw + * commands are sent in a synchronuous manner. In case that the user requested + * to get commands response, it is send to the user. + */ +static int iwl_test_fw_cmd(struct iwl_test *tst, struct nlattr **tb) +{ + struct iwl_host_cmd cmd; + struct iwl_rx_packet *pkt; + struct sk_buff *skb; + void *reply_buf; + u32 reply_len; + int ret; + bool cmd_want_skb; + + memset(&cmd, 0, sizeof(struct iwl_host_cmd)); + + if (!tb[IWL_TM_ATTR_UCODE_CMD_ID] || + !tb[IWL_TM_ATTR_UCODE_CMD_DATA]) { + IWL_ERR(tst->trans, "Missing fw command mandatory fields\n"); + return -ENOMSG; + } + + cmd.flags = CMD_ON_DEMAND | CMD_SYNC; + cmd_want_skb = nla_get_flag(tb[IWL_TM_ATTR_UCODE_CMD_SKB]); + if (cmd_want_skb) + cmd.flags |= CMD_WANT_SKB; + + cmd.id = nla_get_u8(tb[IWL_TM_ATTR_UCODE_CMD_ID]); + cmd.data[0] = nla_data(tb[IWL_TM_ATTR_UCODE_CMD_DATA]); + cmd.len[0] = nla_len(tb[IWL_TM_ATTR_UCODE_CMD_DATA]); + cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; + IWL_DEBUG_INFO(tst->trans, "test fw cmd=0x%x, flags 0x%x, len %d\n", + cmd.id, cmd.flags, cmd.len[0]); + + ret = iwl_test_send_cmd(tst, &cmd); + if (ret) { + IWL_ERR(tst->trans, "Failed to send hcmd\n"); + return ret; + } + if (!cmd_want_skb) + return ret; + + /* Handling return of SKB to the user */ + pkt = cmd.resp_pkt; + if (!pkt) { + IWL_ERR(tst->trans, "HCMD received a null response packet\n"); + return ret; + } + + reply_len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; + skb = iwl_test_alloc_reply(tst, reply_len + 20); + reply_buf = kmalloc(reply_len, GFP_KERNEL); + if (!skb || !reply_buf) { + kfree_skb(skb); + kfree(reply_buf); + return -ENOMEM; + } + + /* The reply is in a page, that we cannot send to user space. */ + memcpy(reply_buf, &(pkt->hdr), reply_len); + iwl_free_resp(&cmd); + + if (nla_put_u32(skb, IWL_TM_ATTR_COMMAND, + IWL_TM_CMD_DEV2APP_UCODE_RX_PKT) || + nla_put(skb, IWL_TM_ATTR_UCODE_RX_PKT, reply_len, reply_buf)) + goto nla_put_failure; + return iwl_test_reply(tst, skb); + +nla_put_failure: + IWL_DEBUG_INFO(tst->trans, "Failed creating NL attributes\n"); + kfree(reply_buf); + kfree_skb(skb); + return -ENOMSG; +} + +/* + * Handles the user application commands for register access. + */ +static int iwl_test_reg(struct iwl_test *tst, struct nlattr **tb) +{ + u32 ofs, val32, cmd; + u8 val8; + struct sk_buff *skb; + int status = 0; + struct iwl_trans *trans = tst->trans; + + if (!tb[IWL_TM_ATTR_REG_OFFSET]) { + IWL_ERR(trans, "Missing reg offset\n"); + return -ENOMSG; + } + + ofs = nla_get_u32(tb[IWL_TM_ATTR_REG_OFFSET]); + IWL_DEBUG_INFO(trans, "test reg access cmd offset=0x%x\n", ofs); + + cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]); + + /* + * Allow access only to FH/CSR/HBUS in direct mode. + * Since we don't have the upper bounds for the CSR and HBUS segments, + * we will use only the upper bound of FH for sanity check. + */ + if (ofs >= FH_MEM_UPPER_BOUND) { + IWL_ERR(trans, "offset out of segment (0x0 - 0x%x)\n", + FH_MEM_UPPER_BOUND); + return -EINVAL; + } + + switch (cmd) { + case IWL_TM_CMD_APP2DEV_DIRECT_REG_READ32: + val32 = iwl_read_direct32(tst->trans, ofs); + IWL_DEBUG_INFO(trans, "32 value to read 0x%x\n", val32); + + skb = iwl_test_alloc_reply(tst, 20); + if (!skb) { + IWL_ERR(trans, "Memory allocation fail\n"); + return -ENOMEM; + } + if (nla_put_u32(skb, IWL_TM_ATTR_REG_VALUE32, val32)) + goto nla_put_failure; + status = iwl_test_reply(tst, skb); + if (status < 0) + IWL_ERR(trans, "Error sending msg : %d\n", status); + break; + + case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE32: + if (!tb[IWL_TM_ATTR_REG_VALUE32]) { + IWL_ERR(trans, "Missing value to write\n"); + return -ENOMSG; + } else { + val32 = nla_get_u32(tb[IWL_TM_ATTR_REG_VALUE32]); + IWL_DEBUG_INFO(trans, "32b write val=0x%x\n", val32); + iwl_write_direct32(tst->trans, ofs, val32); + } + break; + + case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE8: + if (!tb[IWL_TM_ATTR_REG_VALUE8]) { + IWL_ERR(trans, "Missing value to write\n"); + return -ENOMSG; + } else { + val8 = nla_get_u8(tb[IWL_TM_ATTR_REG_VALUE8]); + IWL_DEBUG_INFO(trans, "8b write val=0x%x\n", val8); + iwl_write8(tst->trans, ofs, val8); + } + break; + + default: + IWL_ERR(trans, "Unknown test register cmd ID\n"); + return -ENOMSG; + } + + return status; + +nla_put_failure: + kfree_skb(skb); + return -EMSGSIZE; +} + +/* + * Handles the request to start FW tracing. Allocates of the trace buffer + * and sends a reply to user space with the address of the allocated buffer. + */ +static int iwl_test_trace_begin(struct iwl_test *tst, struct nlattr **tb) +{ + struct sk_buff *skb; + int status = 0; + + if (tst->trace.enabled) + return -EBUSY; + + if (!tb[IWL_TM_ATTR_TRACE_SIZE]) + tst->trace.size = TRACE_BUFF_SIZE_DEF; + else + tst->trace.size = + nla_get_u32(tb[IWL_TM_ATTR_TRACE_SIZE]); + + if (!tst->trace.size) + return -EINVAL; + + if (tst->trace.size < TRACE_BUFF_SIZE_MIN || + tst->trace.size > TRACE_BUFF_SIZE_MAX) + return -EINVAL; + + tst->trace.tsize = tst->trace.size + TRACE_BUFF_PADD; + tst->trace.cpu_addr = dma_alloc_coherent(tst->trans->dev, + tst->trace.tsize, + &tst->trace.dma_addr, + GFP_KERNEL); + if (!tst->trace.cpu_addr) + return -ENOMEM; + + tst->trace.enabled = true; + tst->trace.trace_addr = (u8 *)PTR_ALIGN(tst->trace.cpu_addr, 0x100); + + memset(tst->trace.trace_addr, 0x03B, tst->trace.size); + + skb = iwl_test_alloc_reply(tst, sizeof(tst->trace.dma_addr) + 20); + if (!skb) { + IWL_ERR(tst->trans, "Memory allocation fail\n"); + iwl_test_trace_stop(tst); + return -ENOMEM; + } + + if (nla_put(skb, IWL_TM_ATTR_TRACE_ADDR, + sizeof(tst->trace.dma_addr), + (u64 *)&tst->trace.dma_addr)) + goto nla_put_failure; + + status = iwl_test_reply(tst, skb); + if (status < 0) + IWL_ERR(tst->trans, "Error sending msg : %d\n", status); + + tst->trace.nchunks = DIV_ROUND_UP(tst->trace.size, + DUMP_CHUNK_SIZE); + + return status; + +nla_put_failure: + kfree_skb(skb); + if (nla_get_u32(tb[IWL_TM_ATTR_COMMAND]) == + IWL_TM_CMD_APP2DEV_BEGIN_TRACE) + iwl_test_trace_stop(tst); + return -EMSGSIZE; +} + +/* + * Handles indirect read from the periphery or the SRAM. The read is performed + * to a temporary buffer. The user space application should later issue a dump + */ +static int iwl_test_indirect_read(struct iwl_test *tst, u32 addr, u32 size) +{ + struct iwl_trans *trans = tst->trans; + unsigned long flags; + int i; + + if (size & 0x3) + return -EINVAL; + + tst->mem.size = size; + tst->mem.addr = kmalloc(tst->mem.size, GFP_KERNEL); + if (tst->mem.addr == NULL) + return -ENOMEM; + + /* Hard-coded periphery absolute address */ + if (IWL_ABS_PRPH_START <= addr && + addr < IWL_ABS_PRPH_START + PRPH_END) { + spin_lock_irqsave(&trans->reg_lock, flags); + iwl_grab_nic_access(trans); + iwl_write32(trans, HBUS_TARG_PRPH_RADDR, + addr | (3 << 24)); + for (i = 0; i < size; i += 4) + *(u32 *)(tst->mem.addr + i) = + iwl_read32(trans, HBUS_TARG_PRPH_RDAT); + iwl_release_nic_access(trans); + spin_unlock_irqrestore(&trans->reg_lock, flags); + } else { /* target memory (SRAM) */ + _iwl_read_targ_mem_dwords(trans, addr, + tst->mem.addr, + tst->mem.size / 4); + } + + tst->mem.nchunks = + DIV_ROUND_UP(tst->mem.size, DUMP_CHUNK_SIZE); + tst->mem.in_read = true; + return 0; + +} + +/* + * Handles indirect write to the periphery or SRAM. The is performed to a + * temporary buffer. + */ +static int iwl_test_indirect_write(struct iwl_test *tst, u32 addr, + u32 size, unsigned char *buf) +{ + struct iwl_trans *trans = tst->trans; + u32 val, i; + unsigned long flags; + + if (IWL_ABS_PRPH_START <= addr && + addr < IWL_ABS_PRPH_START + PRPH_END) { + /* Periphery writes can be 1-3 bytes long, or DWORDs */ + if (size < 4) { + memcpy(&val, buf, size); + spin_lock_irqsave(&trans->reg_lock, flags); + iwl_grab_nic_access(trans); + iwl_write32(trans, HBUS_TARG_PRPH_WADDR, + (addr & 0x0000FFFF) | + ((size - 1) << 24)); + iwl_write32(trans, HBUS_TARG_PRPH_WDAT, val); + iwl_release_nic_access(trans); + /* needed after consecutive writes w/o read */ + mmiowb(); + spin_unlock_irqrestore(&trans->reg_lock, flags); + } else { + if (size % 4) + return -EINVAL; + for (i = 0; i < size; i += 4) + iwl_write_prph(trans, addr+i, + *(u32 *)(buf+i)); + } + } else if (iwl_test_valid_hw_addr(tst, addr)) { + _iwl_write_targ_mem_dwords(trans, addr, buf, size / 4); + } else { + return -EINVAL; + } + return 0; +} + +/* + * Handles the user application commands for indirect read/write + * to/from the periphery or the SRAM. + */ +static int iwl_test_indirect_mem(struct iwl_test *tst, struct nlattr **tb) +{ + u32 addr, size, cmd; + unsigned char *buf; + + /* Both read and write should be blocked, for atomicity */ + if (tst->mem.in_read) + return -EBUSY; + + cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]); + if (!tb[IWL_TM_ATTR_MEM_ADDR]) { + IWL_ERR(tst->trans, "Error finding memory offset address\n"); + return -ENOMSG; + } + addr = nla_get_u32(tb[IWL_TM_ATTR_MEM_ADDR]); + if (!tb[IWL_TM_ATTR_BUFFER_SIZE]) { + IWL_ERR(tst->trans, "Error finding size for memory reading\n"); + return -ENOMSG; + } + size = nla_get_u32(tb[IWL_TM_ATTR_BUFFER_SIZE]); + + if (cmd == IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_READ) { + return iwl_test_indirect_read(tst, addr, size); + } else { + if (!tb[IWL_TM_ATTR_BUFFER_DUMP]) + return -EINVAL; + buf = (unsigned char *)nla_data(tb[IWL_TM_ATTR_BUFFER_DUMP]); + return iwl_test_indirect_write(tst, addr, size, buf); + } +} + +/* + * Enable notifications to user space + */ +static int iwl_test_notifications(struct iwl_test *tst, + struct nlattr **tb) +{ + tst->notify = nla_get_flag(tb[IWL_TM_ATTR_ENABLE_NOTIFICATION]); + return 0; +} + +/* + * Handles the request to get the device id + */ +static int iwl_test_get_dev_id(struct iwl_test *tst, struct nlattr **tb) +{ + u32 devid = tst->trans->hw_id; + struct sk_buff *skb; + int status; + + IWL_DEBUG_INFO(tst->trans, "hw version: 0x%x\n", devid); + + skb = iwl_test_alloc_reply(tst, 20); + if (!skb) { + IWL_ERR(tst->trans, "Memory allocation fail\n"); + return -ENOMEM; + } + + if (nla_put_u32(skb, IWL_TM_ATTR_DEVICE_ID, devid)) + goto nla_put_failure; + status = iwl_test_reply(tst, skb); + if (status < 0) + IWL_ERR(tst->trans, "Error sending msg : %d\n", status); + + return 0; + +nla_put_failure: + kfree_skb(skb); + return -EMSGSIZE; +} + +/* + * Handles the request to get the FW version + */ +static int iwl_test_get_fw_ver(struct iwl_test *tst, struct nlattr **tb) +{ + struct sk_buff *skb; + int status; + u32 ver = iwl_test_fw_ver(tst); + + IWL_DEBUG_INFO(tst->trans, "uCode version raw: 0x%x\n", ver); + + skb = iwl_test_alloc_reply(tst, 20); + if (!skb) { + IWL_ERR(tst->trans, "Memory allocation fail\n"); + return -ENOMEM; + } + + if (nla_put_u32(skb, IWL_TM_ATTR_FW_VERSION, ver)) + goto nla_put_failure; + + status = iwl_test_reply(tst, skb); + if (status < 0) + IWL_ERR(tst->trans, "Error sending msg : %d\n", status); + + return 0; + +nla_put_failure: + kfree_skb(skb); + return -EMSGSIZE; +} + +/* + * Parse the netlink message and validate that the IWL_TM_ATTR_CMD exists + */ +int iwl_test_parse(struct iwl_test *tst, struct nlattr **tb, + void *data, int len) +{ + int result; + + result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len, + iwl_testmode_gnl_msg_policy); + if (result) { + IWL_ERR(tst->trans, "Fail parse gnl msg: %d\n", result); + return result; + } + + /* IWL_TM_ATTR_COMMAND is absolutely mandatory */ + if (!tb[IWL_TM_ATTR_COMMAND]) { + IWL_ERR(tst->trans, "Missing testmode command type\n"); + return -ENOMSG; + } + return 0; +} +EXPORT_SYMBOL_GPL(iwl_test_parse); + +/* + * Handle test commands. + * Returns 1 for unknown commands (not handled by the test object); negative + * value in case of error. + */ +int iwl_test_handle_cmd(struct iwl_test *tst, struct nlattr **tb) +{ + int result; + + switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { + case IWL_TM_CMD_APP2DEV_UCODE: + IWL_DEBUG_INFO(tst->trans, "test cmd to uCode\n"); + result = iwl_test_fw_cmd(tst, tb); + break; + + case IWL_TM_CMD_APP2DEV_DIRECT_REG_READ32: + case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE32: + case IWL_TM_CMD_APP2DEV_DIRECT_REG_WRITE8: + IWL_DEBUG_INFO(tst->trans, "test cmd to register\n"); + result = iwl_test_reg(tst, tb); + break; + + case IWL_TM_CMD_APP2DEV_BEGIN_TRACE: + IWL_DEBUG_INFO(tst->trans, "test uCode trace cmd to driver\n"); + result = iwl_test_trace_begin(tst, tb); + break; + + case IWL_TM_CMD_APP2DEV_END_TRACE: + iwl_test_trace_stop(tst); + result = 0; + break; + + case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_READ: + case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_WRITE: + IWL_DEBUG_INFO(tst->trans, "test indirect memory cmd\n"); + result = iwl_test_indirect_mem(tst, tb); + break; + + case IWL_TM_CMD_APP2DEV_NOTIFICATIONS: + IWL_DEBUG_INFO(tst->trans, "test notifications cmd\n"); + result = iwl_test_notifications(tst, tb); + break; + + case IWL_TM_CMD_APP2DEV_GET_FW_VERSION: + IWL_DEBUG_INFO(tst->trans, "test get FW ver cmd\n"); + result = iwl_test_get_fw_ver(tst, tb); + break; + + case IWL_TM_CMD_APP2DEV_GET_DEVICE_ID: + IWL_DEBUG_INFO(tst->trans, "test Get device ID cmd\n"); + result = iwl_test_get_dev_id(tst, tb); + break; + + default: + IWL_DEBUG_INFO(tst->trans, "Unknown test command\n"); + result = 1; + break; + } + return result; +} +EXPORT_SYMBOL_GPL(iwl_test_handle_cmd); + +static int iwl_test_trace_dump(struct iwl_test *tst, struct sk_buff *skb, + struct netlink_callback *cb) +{ + int idx, length; + + if (!tst->trace.enabled || !tst->trace.trace_addr) + return -EFAULT; + + idx = cb->args[4]; + if (idx >= tst->trace.nchunks) + return -ENOENT; + + length = DUMP_CHUNK_SIZE; + if (((idx + 1) == tst->trace.nchunks) && + (tst->trace.size % DUMP_CHUNK_SIZE)) + length = tst->trace.size % + DUMP_CHUNK_SIZE; + + if (nla_put(skb, IWL_TM_ATTR_TRACE_DUMP, length, + tst->trace.trace_addr + (DUMP_CHUNK_SIZE * idx))) + goto nla_put_failure; + + cb->args[4] = ++idx; + return 0; + + nla_put_failure: + return -ENOBUFS; +} + +static int iwl_test_buffer_dump(struct iwl_test *tst, struct sk_buff *skb, + struct netlink_callback *cb) +{ + int idx, length; + + if (!tst->mem.in_read) + return -EFAULT; + + idx = cb->args[4]; + if (idx >= tst->mem.nchunks) { + iwl_test_mem_stop(tst); + return -ENOENT; + } + + length = DUMP_CHUNK_SIZE; + if (((idx + 1) == tst->mem.nchunks) && + (tst->mem.size % DUMP_CHUNK_SIZE)) + length = tst->mem.size % DUMP_CHUNK_SIZE; + + if (nla_put(skb, IWL_TM_ATTR_BUFFER_DUMP, length, + tst->mem.addr + (DUMP_CHUNK_SIZE * idx))) + goto nla_put_failure; + + cb->args[4] = ++idx; + return 0; + + nla_put_failure: + return -ENOBUFS; +} + +/* + * Handle dump commands. + * Returns 1 for unknown commands (not handled by the test object); negative + * value in case of error. + */ +int iwl_test_dump(struct iwl_test *tst, u32 cmd, struct sk_buff *skb, + struct netlink_callback *cb) +{ + int result; + + switch (cmd) { + case IWL_TM_CMD_APP2DEV_READ_TRACE: + IWL_DEBUG_INFO(tst->trans, "uCode trace cmd\n"); + result = iwl_test_trace_dump(tst, skb, cb); + break; + + case IWL_TM_CMD_APP2DEV_INDIRECT_BUFFER_DUMP: + IWL_DEBUG_INFO(tst->trans, "testmode sram dump cmd\n"); + result = iwl_test_buffer_dump(tst, skb, cb); + break; + + default: + result = 1; + break; + } + return result; +} +EXPORT_SYMBOL_GPL(iwl_test_dump); + +/* + * Multicast a spontaneous messages from the device to the user space. + */ +static void iwl_test_send_rx(struct iwl_test *tst, + struct iwl_rx_cmd_buffer *rxb) +{ + struct sk_buff *skb; + struct iwl_rx_packet *data; + int length; + + data = rxb_addr(rxb); + length = le32_to_cpu(data->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; + + /* the length doesn't include len_n_flags field, so add it manually */ + length += sizeof(__le32); + + skb = iwl_test_alloc_event(tst, length + 20); + if (skb == NULL) { + IWL_ERR(tst->trans, "Out of memory for message to user\n"); + return; + } + + if (nla_put_u32(skb, IWL_TM_ATTR_COMMAND, + IWL_TM_CMD_DEV2APP_UCODE_RX_PKT) || + nla_put(skb, IWL_TM_ATTR_UCODE_RX_PKT, length, data)) + goto nla_put_failure; + + iwl_test_event(tst, skb); + return; + +nla_put_failure: + kfree_skb(skb); + IWL_ERR(tst->trans, "Ouch, overran buffer, check allocation!\n"); +} + +/* + * Called whenever a Rx frames is recevied from the device. If notifications to + * the user space are requested, sends the frames to the user. + */ +void iwl_test_rx(struct iwl_test *tst, struct iwl_rx_cmd_buffer *rxb) +{ + if (tst->notify) + iwl_test_send_rx(tst, rxb); +} +EXPORT_SYMBOL_GPL(iwl_test_rx); diff --git a/drivers/net/wireless/iwlwifi/iwl-test.h b/drivers/net/wireless/iwlwifi/iwl-test.h new file mode 100644 index 000000000000..e13ffa8acc02 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-test.h @@ -0,0 +1,161 @@ +/****************************************************************************** + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2010 - 2012 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, + * USA + * + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + * BSD LICENSE + * + * Copyright(c) 2010 - 2012 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + *****************************************************************************/ + +#ifndef __IWL_TEST_H__ +#define __IWL_TEST_H__ + +#include <linux/types.h> +#include "iwl-trans.h" + +struct iwl_test_trace { + u32 size; + u32 tsize; + u32 nchunks; + u8 *cpu_addr; + u8 *trace_addr; + dma_addr_t dma_addr; + bool enabled; +}; + +struct iwl_test_mem { + u32 size; + u32 nchunks; + u8 *addr; + bool in_read; +}; + +/* + * struct iwl_test_ops: callback to the op mode + * + * The structure defines the callbacks that the op_mode should handle, + * inorder to handle logic that is out of the scope of iwl_test. The + * op_mode must set all the callbacks. + + * @send_cmd: handler that is used by the test object to request the + * op_mode to send a command to the fw. + * + * @valid_hw_addr: handler that is used by the test object to request the + * op_mode to check if the given address is a valid address. + * + * @get_fw_ver: handler used to get the FW version. + * + * @alloc_reply: handler used by the test object to request the op_mode + * to allocate an skb for sending a reply to the user, and initialize + * the skb. It is assumed that the test object only fills the required + * attributes. + * + * @reply: handler used by the test object to request the op_mode to reply + * to a request. The skb is an skb previously allocated by the the + * alloc_reply callback. + I + * @alloc_event: handler used by the test object to request the op_mode + * to allocate an skb for sending an event, and initialize + * the skb. It is assumed that the test object only fills the required + * attributes. + * + * @reply: handler used by the test object to request the op_mode to send + * an event. The skb is an skb previously allocated by the the + * alloc_event callback. + */ +struct iwl_test_ops { + int (*send_cmd)(struct iwl_op_mode *op_modes, + struct iwl_host_cmd *cmd); + bool (*valid_hw_addr)(u32 addr); + u32 (*get_fw_ver)(struct iwl_op_mode *op_mode); + + struct sk_buff *(*alloc_reply)(struct iwl_op_mode *op_mode, int len); + int (*reply)(struct iwl_op_mode *op_mode, struct sk_buff *skb); + struct sk_buff* (*alloc_event)(struct iwl_op_mode *op_mode, int len); + void (*event)(struct iwl_op_mode *op_mode, struct sk_buff *skb); +}; + +struct iwl_test { + struct iwl_trans *trans; + struct iwl_test_ops *ops; + struct iwl_test_trace trace; + struct iwl_test_mem mem; + bool notify; +}; + +void iwl_test_init(struct iwl_test *tst, struct iwl_trans *trans, + struct iwl_test_ops *ops); + +void iwl_test_free(struct iwl_test *tst); + +int iwl_test_parse(struct iwl_test *tst, struct nlattr **tb, + void *data, int len); + +int iwl_test_handle_cmd(struct iwl_test *tst, struct nlattr **tb); + +int iwl_test_dump(struct iwl_test *tst, u32 cmd, struct sk_buff *skb, + struct netlink_callback *cb); + +void iwl_test_rx(struct iwl_test *tst, struct iwl_rx_cmd_buffer *rxb); + +static inline void iwl_test_enable_notifications(struct iwl_test *tst, + bool enable) +{ + tst->notify = enable; +} + +#endif diff --git a/drivers/net/wireless/iwlwifi/dvm/testmode.h b/drivers/net/wireless/iwlwifi/iwl-testmode.h index 6ba211b09426..6ba211b09426 100644 --- a/drivers/net/wireless/iwlwifi/dvm/testmode.h +++ b/drivers/net/wireless/iwlwifi/iwl-testmode.h diff --git a/drivers/net/wireless/iwlwifi/pcie/internal.h b/drivers/net/wireless/iwlwifi/pcie/internal.h index 94201c4d6227..5024fb662bf6 100644 --- a/drivers/net/wireless/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/iwlwifi/pcie/internal.h @@ -339,16 +339,9 @@ void iwl_tx_cmd_complete(struct iwl_trans *trans, void iwl_trans_txq_update_byte_cnt_tbl(struct iwl_trans *trans, struct iwl_tx_queue *txq, u16 byte_cnt); -void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int queue); -void iwl_trans_set_wr_ptrs(struct iwl_trans *trans, int txq_id, u32 index); -void iwl_trans_tx_queue_set_status(struct iwl_trans *trans, - struct iwl_tx_queue *txq, - int tx_fifo_id, bool active); -void __iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, - int fifo, int sta_id, int tid, - int frame_limit, u16 ssn); void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, int fifo, int sta_id, int tid, int frame_limit, u16 ssn); +void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int queue); void iwl_txq_free_tfd(struct iwl_trans *trans, struct iwl_tx_queue *txq, enum dma_data_direction dma_dir); int iwl_tx_queue_reclaim(struct iwl_trans *trans, int txq_id, int index, diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 69dece5abb2f..cc935168ae52 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -298,6 +298,10 @@ static void iwl_trans_pcie_queue_stuck_timer(unsigned long data) struct iwl_tx_queue *txq = (void *)data; struct iwl_trans_pcie *trans_pcie = txq->trans_pcie; struct iwl_trans *trans = iwl_trans_pcie_get_trans(trans_pcie); + u32 scd_sram_addr = trans_pcie->scd_base_addr + + SCD_TX_STTS_MEM_LOWER_BOUND + (16 * txq->q.id); + u8 buf[16]; + int i; spin_lock(&txq->lock); /* check if triggered erroneously */ @@ -307,15 +311,40 @@ static void iwl_trans_pcie_queue_stuck_timer(unsigned long data) } spin_unlock(&txq->lock); - IWL_ERR(trans, "Queue %d stuck for %u ms.\n", txq->q.id, jiffies_to_msecs(trans_pcie->wd_timeout)); IWL_ERR(trans, "Current SW read_ptr %d write_ptr %d\n", txq->q.read_ptr, txq->q.write_ptr); - IWL_ERR(trans, "Current HW read_ptr %d write_ptr %d\n", - iwl_read_prph(trans, SCD_QUEUE_RDPTR(txq->q.id)) - & (TFD_QUEUE_SIZE_MAX - 1), - iwl_read_prph(trans, SCD_QUEUE_WRPTR(txq->q.id))); + + iwl_read_targ_mem_bytes(trans, scd_sram_addr, buf, sizeof(buf)); + + iwl_print_hex_error(trans, buf, sizeof(buf)); + + for (i = 0; i < FH_TCSR_CHNL_NUM; i++) + IWL_ERR(trans, "FH TRBs(%d) = 0x%08x\n", i, + iwl_read_direct32(trans, FH_TX_TRB_REG(i))); + + for (i = 0; i < trans->cfg->base_params->num_of_queues; i++) { + u32 status = iwl_read_prph(trans, SCD_QUEUE_STATUS_BITS(i)); + u8 fifo = (status >> SCD_QUEUE_STTS_REG_POS_TXF) & 0x7; + bool active = !!(status & BIT(SCD_QUEUE_STTS_REG_POS_ACTIVE)); + u32 tbl_dw = + iwl_read_targ_mem(trans, + trans_pcie->scd_base_addr + + SCD_TRANS_TBL_OFFSET_QUEUE(i)); + + if (i & 0x1) + tbl_dw = (tbl_dw & 0xFFFF0000) >> 16; + else + tbl_dw = tbl_dw & 0x0000FFFF; + + IWL_ERR(trans, + "Q %d is %sactive and mapped to fifo %d ra_tid 0x%04x [%d,%d]\n", + i, active ? "" : "in", fifo, tbl_dw, + iwl_read_prph(trans, + SCD_QUEUE_RDPTR(i)) & (txq->q.n_bd - 1), + iwl_read_prph(trans, SCD_QUEUE_WRPTR(i))); + } iwl_op_mode_nic_error(trans->op_mode); } @@ -1062,9 +1091,8 @@ static void iwl_tx_start(struct iwl_trans *trans) for (i = 0; i < trans_pcie->n_q_to_fifo; i++) { int fifo = trans_pcie->setup_q_to_fifo[i]; - __iwl_trans_pcie_txq_enable(trans, i, fifo, IWL_INVALID_STATION, - IWL_TID_NON_QOS, - SCD_FRAME_LIMIT, 0); + iwl_trans_pcie_txq_enable(trans, i, fifo, IWL_INVALID_STATION, + IWL_TID_NON_QOS, SCD_FRAME_LIMIT, 0); } /* Activate all Tx DMA/FIFO channels */ @@ -1238,6 +1266,19 @@ static int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb, spin_lock(&txq->lock); + /* In AGG mode, the index in the ring must correspond to the WiFi + * sequence number. This is a HW requirements to help the SCD to parse + * the BA. + * Check here that the packets are in the right place on the ring. + */ +#ifdef CONFIG_IWLWIFI_DEBUG + wifi_seq = SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); + WARN_ONCE((iwl_read_prph(trans, SCD_AGGR_SEL) & BIT(txq_id)) && + ((wifi_seq & 0xff) != q->write_ptr), + "Q: %d WiFi Seq %d tfdNum %d", + txq_id, wifi_seq, q->write_ptr); +#endif + /* Set up driver data for this TFD */ txq->entries[q->write_ptr].skb = skb; txq->entries[q->write_ptr].cmd = dev_cmd; @@ -1331,7 +1372,8 @@ static int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb, skb->data + hdr_len, secondlen); /* start timer if queue currently empty */ - if (q->read_ptr == q->write_ptr && trans_pcie->wd_timeout) + if (txq->need_update && q->read_ptr == q->write_ptr && + trans_pcie->wd_timeout) mod_timer(&txq->stuck_timer, jiffies + trans_pcie->wd_timeout); /* Tell device the write index *just past* this latest filled TFD */ diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index 35e82161ca43..6baf8deef519 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -380,8 +380,8 @@ static void iwlagn_txq_inval_byte_cnt_tbl(struct iwl_trans *trans, tfd_offset[TFD_QUEUE_SIZE_MAX + read_ptr] = bc_ent; } -static int iwlagn_tx_queue_set_q2ratid(struct iwl_trans *trans, u16 ra_tid, - u16 txq_id) +static int iwl_txq_set_ratid_map(struct iwl_trans *trans, u16 ra_tid, + u16 txq_id) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); u32 tbl_dw_addr; @@ -405,7 +405,7 @@ static int iwlagn_tx_queue_set_q2ratid(struct iwl_trans *trans, u16 ra_tid, return 0; } -static void iwlagn_tx_queue_stop_scheduler(struct iwl_trans *trans, u16 txq_id) +static inline void iwl_txq_set_inactive(struct iwl_trans *trans, u16 txq_id) { /* Simply stop the queue, but don't change any configuration; * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */ @@ -415,46 +415,16 @@ static void iwlagn_tx_queue_stop_scheduler(struct iwl_trans *trans, u16 txq_id) (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN)); } -void iwl_trans_set_wr_ptrs(struct iwl_trans *trans, int txq_id, u32 index) -{ - IWL_DEBUG_TX_QUEUES(trans, "Q %d WrPtr: %d\n", txq_id, index & 0xff); - iwl_write_direct32(trans, HBUS_TARG_WRPTR, - (index & 0xff) | (txq_id << 8)); - iwl_write_prph(trans, SCD_QUEUE_RDPTR(txq_id), index); -} - -void iwl_trans_tx_queue_set_status(struct iwl_trans *trans, - struct iwl_tx_queue *txq, - int tx_fifo_id, bool active) -{ - int txq_id = txq->q.id; - - iwl_write_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id), - (active << SCD_QUEUE_STTS_REG_POS_ACTIVE) | - (tx_fifo_id << SCD_QUEUE_STTS_REG_POS_TXF) | - (1 << SCD_QUEUE_STTS_REG_POS_WSL) | - SCD_QUEUE_STTS_REG_MSK); - - if (active) - IWL_DEBUG_TX_QUEUES(trans, "Activate queue %d on FIFO %d\n", - txq_id, tx_fifo_id); - else - IWL_DEBUG_TX_QUEUES(trans, "Deactivate queue %d\n", txq_id); -} - -void __iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, - int fifo, int sta_id, int tid, - int frame_limit, u16 ssn) +void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, int fifo, + int sta_id, int tid, int frame_limit, u16 ssn) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - lockdep_assert_held(&trans_pcie->irq_lock); - if (test_and_set_bit(txq_id, trans_pcie->queue_used)) WARN_ONCE(1, "queue %d already used - expect issues", txq_id); /* Stop this Tx queue before configuring it */ - iwlagn_tx_queue_stop_scheduler(trans, txq_id); + iwl_txq_set_inactive(trans, txq_id); /* Set this queue as a chain-building queue unless it is CMD queue */ if (txq_id != trans_pcie->cmd_queue) @@ -465,17 +435,27 @@ void __iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, u16 ra_tid = BUILD_RAxTID(sta_id, tid); /* Map receiver-address / traffic-ID to this queue */ - iwlagn_tx_queue_set_q2ratid(trans, ra_tid, txq_id); + iwl_txq_set_ratid_map(trans, ra_tid, txq_id); /* enable aggregations for the queue */ iwl_set_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id)); + } else { + /* + * disable aggregations for the queue, this will also make the + * ra_tid mapping configuration irrelevant since it is now a + * non-AGG queue. + */ + iwl_clear_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id)); } /* Place first TFD at index corresponding to start sequence number. * Assumes that ssn_idx is valid (!= 0xFFF) */ trans_pcie->txq[txq_id].q.read_ptr = (ssn & 0xff); trans_pcie->txq[txq_id].q.write_ptr = (ssn & 0xff); - iwl_trans_set_wr_ptrs(trans, txq_id, ssn); + + iwl_write_direct32(trans, HBUS_TARG_WRPTR, + (ssn & 0xff) | (txq_id << 8)); + iwl_write_prph(trans, SCD_QUEUE_RDPTR(txq_id), ssn); /* Set up Tx window size and frame limit for this queue */ iwl_write_targ_mem(trans, trans_pcie->scd_base_addr + @@ -488,43 +468,34 @@ void __iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK)); /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */ - iwl_trans_tx_queue_set_status(trans, &trans_pcie->txq[txq_id], - fifo, true); -} - -void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, int fifo, - int sta_id, int tid, int frame_limit, u16 ssn) -{ - struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - unsigned long flags; - - spin_lock_irqsave(&trans_pcie->irq_lock, flags); - - __iwl_trans_pcie_txq_enable(trans, txq_id, fifo, sta_id, - tid, frame_limit, ssn); - - spin_unlock_irqrestore(&trans_pcie->irq_lock, flags); + iwl_write_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id), + (1 << SCD_QUEUE_STTS_REG_POS_ACTIVE) | + (fifo << SCD_QUEUE_STTS_REG_POS_TXF) | + (1 << SCD_QUEUE_STTS_REG_POS_WSL) | + SCD_QUEUE_STTS_REG_MSK); + IWL_DEBUG_TX_QUEUES(trans, "Activate queue %d on FIFO %d WrPtr: %d\n", + txq_id, fifo, ssn & 0xff); } void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int txq_id) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + u16 rd_ptr, wr_ptr; + int n_bd = trans_pcie->txq[txq_id].q.n_bd; if (!test_and_clear_bit(txq_id, trans_pcie->queue_used)) { WARN_ONCE(1, "queue %d not used", txq_id); return; } - iwlagn_tx_queue_stop_scheduler(trans, txq_id); - - iwl_clear_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id)); + rd_ptr = iwl_read_prph(trans, SCD_QUEUE_RDPTR(txq_id)) & (n_bd - 1); + wr_ptr = iwl_read_prph(trans, SCD_QUEUE_WRPTR(txq_id)); - trans_pcie->txq[txq_id].q.read_ptr = 0; - trans_pcie->txq[txq_id].q.write_ptr = 0; - iwl_trans_set_wr_ptrs(trans, txq_id, 0); + WARN_ONCE(rd_ptr != wr_ptr, "queue %d isn't empty: [%d,%d]", + txq_id, rd_ptr, wr_ptr); - iwl_trans_tx_queue_set_status(trans, &trans_pcie->txq[txq_id], - 0, false); + iwl_txq_set_inactive(trans, txq_id); + IWL_DEBUG_TX_QUEUES(trans, "Deactivate queue %d\n", txq_id); } /*************** HOST COMMAND QUEUE FUNCTIONS *****/ |