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>

diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 2679d00..5427005 100644 (file)
--- 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 bbc4e0f..3da18c9 100644 (file)
--- 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 f544d48..31ec164 100644 (file)
--- 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 3dbe497..55038c7 100644 (file)
--- 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