qcacmn: Add support for low memory platforms

For supporting low memory platforms, if fastpath is enabled, the number
of destinaton ring receive buffers are reduced from 512 to 64 for CE1.
Also when pktlog has been disabled, avoid allocating receive buffers
for CE8.

Change-Id: Ia4cd991ec14a5d69f13efee8e6f72db6da99f83a
Acked-by: Sahoo, Amarendra Kumar <[email protected]>
CRs-Fixed: 1066302

hif/inc/hif.h

@@ -510,6 +510,18 @@ enum hif_target_status {
 	TARGET_STATUS_SUSPEND /*target got suspend */
 };
 
+/**
+ * enum hif_attribute_flags: configure hif
+ *
+ * @HIF_LOWDESC_CE_CFG: Configure HIF with Low descriptor CE
+ * @HIF_LOWDESC_CE_NO_PKTLOG_CFG: Configure HIF with Low descriptor
+ *  							+ No pktlog CE
+ */
+enum hif_attribute_flags {
+	HIF_LOWDESC_CE_CFG = 1,
+	HIF_LOWDESC_CE_NO_PKTLOG_CFG
+};
+
 #define HIF_DATA_ATTR_SET_TX_CLASSIFY(attr, v) \
 	(attr |= (v & 0x01) << 5)
 #define HIF_DATA_ATTR_SET_ENCAPSULATION_TYPE(attr, v) \
@@ -723,6 +735,8 @@ void hif_set_bundle_mode(struct hif_opaque_softc *scn, bool enabled,
 				int rx_bundle_cnt);
 int hif_bus_reset_resume(struct hif_opaque_softc *scn);
 
+void hif_set_attribute(struct hif_opaque_softc *osc, uint8_t hif_attrib);
+
 #ifdef WLAN_SUSPEND_RESUME_TEST
 typedef void (*hif_fake_resume_callback)(uint32_t val);
 void hif_fake_apps_suspend(struct hif_opaque_softc *hif_ctx,

hif/src/ce/ce_assignment.h

@@ -364,6 +364,78 @@ static struct CE_attr host_ce_config_wlan_ar900b[] = {
 	{ /* CE11 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },   /* Target autonomous HIF_memcpy */
 };
 
+static struct CE_attr host_lowdesc_ce_cfg_wlan_ar9888[] = {
+	{ /* CE0 */ CE_ATTR_FLAGS, 0, 16, 256, 0, NULL, }, /* host->target HTC control and raw streams */
+	/* could be moved to share CE3 */
+#if WLAN_FEATURE_FASTPATH
+	{ /* CE1 */ CE_ATTR_FLAGS, 0, 0, 512, 64, NULL, },/* target->host BMI + HTC control */
+#else
+	{ /* CE1 */ CE_ATTR_FLAGS, 0, 0, 512, 512, NULL, },/* target->host BMI + HTC control */
+#endif
+	{ /* CE2 */ CE_ATTR_FLAGS, 0, 0, 2048, 128, NULL, },/* target->host WMI */
+	{ /* CE3 */ CE_ATTR_FLAGS, 0, 32, 2048, 0, NULL, },/* host->target WMI */
+	{ /* CE4 */ CE_ATTR_FLAGS | CE_ATTR_DISABLE_INTR, 0,
+		CE_HTT_H2T_MSG_SRC_NENTRIES_AR900B, 256, 0, NULL, }, /* host->target HTT */
+#if WLAN_FEATURE_FASTPATH
+	{ /* CE5 */ CE_ATTR_FLAGS, 0, 0, 512, 512, NULL, },    /* target->host HTT messages */
+#else   /* WLAN_FEATURE_FASTPATH */
+	{ /* CE5 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },    /* unused */
+#endif  /* WLAN_FEATURE_FASTPATH */
+	{ /* CE6 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },    /* Target autonomous HIF_memcpy */
+	{ /* CE7 */ CE_ATTR_FLAGS, 0, 2, DIAG_TRANSFER_LIMIT, 2, NULL, }, /* ce_diag, the Diagnostic Window */
+	{ /* CE8 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },    /* Target autonomous HIF_memcpy */
+};
+
+static struct CE_attr host_lowdesc_ce_cfg_wlan_ar900b[] = {
+	{ /* CE0 */ CE_ATTR_FLAGS, 0, 16, 256, 0, NULL, }, /* host->target HTC control and raw streams */
+	/* could be moved to share CE3 */
+#if WLAN_FEATURE_FASTPATH
+	{ /* CE1 */ CE_ATTR_FLAGS, 0, 0, 512, 64, NULL, },/* target->host BMI + HTC control */
+#else
+	{ /* CE1 */ CE_ATTR_FLAGS, 0, 0, 512, 512, NULL, },/* target->host BMI + HTC control */
+#endif
+	{ /* CE2 */ CE_ATTR_FLAGS, 0, 0, 2048, 128, NULL, },/* target->host WMI */
+	{ /* CE3 */ CE_ATTR_FLAGS, 0, 32, 2048, 0, NULL, },/* host->target WMI */
+	{ /* CE4 */ CE_ATTR_FLAGS | CE_ATTR_DISABLE_INTR, 0,
+		CE_HTT_H2T_MSG_SRC_NENTRIES_AR900B, 256, 0, NULL, }, /* host->target HTT */
+#if WLAN_FEATURE_FASTPATH
+	{ /* CE5 */ CE_ATTR_FLAGS, 0, 0, 512, 512, NULL, },    /* target->host HTT messages */
+#else   /* WLAN_FEATURE_FASTPATH */
+	{ /* CE5 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },    /* unused */
+#endif  /* WLAN_FEATURE_FASTPATH */
+	{ /* CE6 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },    /* Target autonomous HIF_memcpy */
+	{ /* CE7 */ CE_ATTR_FLAGS, 0, 2, DIAG_TRANSFER_LIMIT, 2, NULL, }, /* ce_diag, the Diagnostic Window */
+	{ /* CE8 */ CE_ATTR_FLAGS, 0, 0, 2048, 128, NULL, },/* target->host pktlog */
+	{ /* CE9 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },    /* Target autonomous HIF_memcpy */
+	{ /* CE10 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },   /* Target autonomous HIF_memcpy */
+	{ /* CE11 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },   /* Target autonomous HIF_memcpy */
+};
+
+static struct CE_attr host_lowdesc_ce_cfg_wlan_ar900b_nopktlog[] = {
+	{ /* CE0 */ CE_ATTR_FLAGS, 0, 16, 256, 0, NULL, }, /* host->target HTC control and raw streams */
+	/* could be moved to share CE3 */
+#if WLAN_FEATURE_FASTPATH
+	{ /* CE1 */ CE_ATTR_FLAGS, 0, 0, 512, 64, NULL, },/* target->host BMI + HTC control */
+#else
+	{ /* CE1 */ CE_ATTR_FLAGS, 0, 0, 512, 512, NULL, },/* target->host BMI + HTC control */
+#endif
+	{ /* CE2 */ CE_ATTR_FLAGS, 0, 0, 2048, 128, NULL, },/* target->host WMI */
+	{ /* CE3 */ CE_ATTR_FLAGS, 0, 32, 2048, 0, NULL, },/* host->target WMI */
+	{ /* CE4 */ CE_ATTR_FLAGS | CE_ATTR_DISABLE_INTR, 0,
+		CE_HTT_H2T_MSG_SRC_NENTRIES_AR900B, 256, 0, NULL, }, /* host->target HTT */
+#if WLAN_FEATURE_FASTPATH
+	{ /* CE5 */ CE_ATTR_FLAGS, 0, 0, 512, 512, NULL, },    /* target->host HTT messages */
+#else   /* WLAN_FEATURE_FASTPATH */
+	{ /* CE5 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },    /* unused */
+#endif  /* WLAN_FEATURE_FASTPATH */
+	{ /* CE6 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },    /* Target autonomous HIF_memcpy */
+	{ /* CE7 */ CE_ATTR_FLAGS, 0, 2, DIAG_TRANSFER_LIMIT, 2, NULL, }, /* ce_diag, the Diagnostic Window */
+	{ /* CE8 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },/* target->host pktlog */
+	{ /* CE9 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },    /* Target autonomous HIF_memcpy */
+	{ /* CE10 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },   /* Target autonomous HIF_memcpy */
+	{ /* CE11 */ CE_ATTR_FLAGS, 0, 0, 0, 0, NULL, },   /* Target autonomous HIF_memcpy */
+};
+
 static struct CE_pipe_config target_ce_config_wlan_ar9888[] = {
 	{ /* CE0 */ 0, PIPEDIR_OUT, 32, 256, CE_ATTR_FLAGS, 0, },   /* host->target HTC control and raw streams */
 	{ /* CE1 */ 1, PIPEDIR_IN, 32, 512, CE_ATTR_FLAGS, 0, },    /* target->host HTC control */

hif/src/ce/ce_main.c

@@ -2038,7 +2038,16 @@ void hif_ce_prepare_config(struct hif_softc *scn)
 	case TARGET_TYPE_QCA9984:
 	case TARGET_TYPE_IPQ4019:
 	case TARGET_TYPE_QCA9888:
-		hif_state->host_ce_config = host_ce_config_wlan_ar900b;
+		if (hif_is_attribute_set(scn, HIF_LOWDESC_CE_NO_PKTLOG_CFG)) {
+			hif_state->host_ce_config =
+				host_lowdesc_ce_cfg_wlan_ar900b_nopktlog;
+		} else if (hif_is_attribute_set(scn, HIF_LOWDESC_CE_CFG)) {
+			hif_state->host_ce_config =
+				host_lowdesc_ce_cfg_wlan_ar900b;
+		} else {
+			hif_state->host_ce_config = host_ce_config_wlan_ar900b;
+		}
+
 		hif_state->target_ce_config = target_ce_config_wlan_ar900b;
 		hif_state->target_ce_config_sz =
 				sizeof(target_ce_config_wlan_ar900b);
@@ -2050,7 +2059,12 @@ void hif_ce_prepare_config(struct hif_softc *scn)
 
 	case TARGET_TYPE_AR9888:
 	case TARGET_TYPE_AR9888V2:
-		hif_state->host_ce_config = host_ce_config_wlan_ar9888;
+		if (hif_is_attribute_set(scn, HIF_LOWDESC_CE_CFG)) {
+			hif_state->host_ce_config = host_lowdesc_ce_cfg_wlan_ar9888;
+		} else {
+			hif_state->host_ce_config = host_ce_config_wlan_ar9888;
+		}
+
 		hif_state->target_ce_config = target_ce_config_wlan_ar9888;
 		hif_state->target_ce_config_sz =
 					sizeof(target_ce_config_wlan_ar9888);
@@ -2891,6 +2905,12 @@ uint32_t hif_set_nss_wifiol_mode(struct hif_opaque_softc *osc, uint32_t mode)
 
 #endif
 
+void hif_set_attribute(struct hif_opaque_softc *osc, uint8_t hif_attrib)
+{
+	struct hif_softc *scn = HIF_GET_SOFTC(osc);
+	scn->hif_attribute = hif_attrib;
+}
+
 void hif_disable_interrupt(struct hif_opaque_softc *osc, uint32_t pipe_num)
 {
 	struct hif_softc *scn = HIF_GET_SOFTC(osc);

hif/src/hif_main.h

@@ -173,6 +173,7 @@ struct hif_softc {
 #ifdef WLAN_SUSPEND_RESUME_TEST
 	struct fake_apps_context fake_apps_ctx;
 #endif /* WLAN_SUSPEND_RESUME_TEST */
+	uint32_t hif_attribute;
 };
 
 #ifdef QCA_NSS_WIFI_OFFLOAD_SUPPORT
@@ -187,6 +188,12 @@ static inline bool hif_is_nss_wifi_enabled(struct hif_softc *sc)
 }
 #endif
 
+static inline uint8_t hif_is_attribute_set(struct hif_softc *sc,
+						uint32_t hif_attrib)
+{
+	return sc->hif_attribute == hif_attrib;
+}
+
 A_target_id_t hif_get_target_id(struct hif_softc *scn);
 void hif_dump_pipe_debug_count(struct hif_softc *scn);
 void hif_display_bus_stats(struct hif_opaque_softc *scn);