From 26c197600b4345f5143676d62260b4985da0b47b Mon Sep 17 00:00:00 2001 From: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com> Date: Tue, 7 Jun 2016 15:47:05 +0300 Subject: [PATCH] ath10k: define an enum to enable cycle counter wraparound logic QCA988X hw implements a different cycle counter wraparound behaviour when compared to QCA4019. To properly handle different wraparound logic for these chipsets replace already available bool hw_params member, has_shifted_cc_wraparound, with an enum which could be extended to handle different wraparound behaviour. This patch keeps the existing logic functionally same and a prepares cycle counter wraparound handling to extend for other chips. Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com> [kvalo@qca.qualcomm.com: change also QCA9887 wrap type] Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com> --- drivers/net/wireless/ath/ath10k/core.c | 6 +++--- drivers/net/wireless/ath/ath10k/core.h | 8 +++----- drivers/net/wireless/ath/ath10k/hw.c | 4 +++- drivers/net/wireless/ath/ath10k/hw.h | 11 +++++++++++ 4 files changed, 20 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 2679d00a20e6..542700550410 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -56,7 +56,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .name = "qca988x hw2.0", .patch_load_addr = QCA988X_HW_2_0_PATCH_LOAD_ADDR, .uart_pin = 7, - .has_shifted_cc_wraparound = true, + .cc_wraparound_type = ATH10K_HW_CC_WRAP_SHIFTED_ALL, .otp_exe_param = 0, .channel_counters_freq_hz = 88000, .max_probe_resp_desc_thres = 0, @@ -75,7 +75,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .name = "qca9887 hw1.0", .patch_load_addr = QCA9887_HW_1_0_PATCH_LOAD_ADDR, .uart_pin = 7, - .has_shifted_cc_wraparound = true, + .cc_wraparound_type = ATH10K_HW_CC_WRAP_SHIFTED_ALL, .otp_exe_param = 0, .channel_counters_freq_hz = 88000, .max_probe_resp_desc_thres = 0, @@ -246,7 +246,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .name = "qca4019 hw1.0", .patch_load_addr = QCA4019_HW_1_0_PATCH_LOAD_ADDR, .uart_pin = 7, - .has_shifted_cc_wraparound = true, + .cc_wraparound_type = ATH10K_HW_CC_WRAP_SHIFTED_ALL, .otp_exe_param = 0x0010000, .continuous_frag_desc = true, .cck_rate_map_rev2 = true, diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index bbc4e0f444f0..3da18c9dbd7a 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -713,12 +713,10 @@ struct ath10k { int uart_pin; u32 otp_exe_param; - /* This is true if given HW chip has a quirky Cycle Counter - * wraparound which resets to 0x7fffffff instead of 0. All - * other CC related counters (e.g. Rx Clear Count) are divided - * by 2 so they never wraparound themselves. + /* Type of hw cycle counter wraparound logic, for more info + * refer enum ath10k_hw_cc_wraparound_type. */ - bool has_shifted_cc_wraparound; + enum ath10k_hw_cc_wraparound_type cc_wraparound_type; /* Some of chip expects fragment descriptor to be continuous * memory for any TX operation. Set continuous_frag_desc flag diff --git a/drivers/net/wireless/ath/ath10k/hw.c b/drivers/net/wireless/ath/ath10k/hw.c index f544d48518c3..31ec164c63b1 100644 --- a/drivers/net/wireless/ath/ath10k/hw.c +++ b/drivers/net/wireless/ath/ath10k/hw.c @@ -179,11 +179,13 @@ void ath10k_hw_fill_survey_time(struct ath10k *ar, struct survey_info *survey, u32 cc, u32 rcc, u32 cc_prev, u32 rcc_prev) { u32 cc_fix = 0; + enum ath10k_hw_cc_wraparound_type wraparound_type; survey->filled |= SURVEY_INFO_TIME | SURVEY_INFO_TIME_BUSY; - if (ar->hw_params.has_shifted_cc_wraparound && cc < cc_prev) { + wraparound_type = ar->hw_params.cc_wraparound_type; + if (wraparound_type == ATH10K_HW_CC_WRAP_SHIFTED_ALL && cc < cc_prev) { cc_fix = 0x7fffffff; survey->filled &= ~SURVEY_INFO_TIME_BUSY; } diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h index 3dbe4975faa2..55038c760732 100644 --- a/drivers/net/wireless/ath/ath10k/hw.h +++ b/drivers/net/wireless/ath/ath10k/hw.h @@ -351,6 +351,17 @@ enum ath10k_hw_4addr_pad { ATH10K_HW_4ADDR_PAD_BEFORE, }; +enum ath10k_hw_cc_wraparound_type { + ATH10K_HW_CC_WRAP_DISABLED = 0, + + /* This type is when the HW chip has a quirky Cycle Counter + * wraparound which resets to 0x7fffffff instead of 0. All + * other CC related counters (e.g. Rx Clear Count) are divided + * by 2 so they never wraparound themselves. + */ + ATH10K_HW_CC_WRAP_SHIFTED_ALL = 1, +}; + /* Target specific defines for MAIN firmware */ #define TARGET_NUM_VDEVS 8 #define TARGET_NUM_PEER_AST 2