qcacmn: Add dummy functions to bus_ops table for snoc

Use bus ops table to tunnel into dummy implementations for snoc.
Needed to support both pcie and snoc in the same binary.

Change-Id: I11725ed4dfa5dd7b43a4b29236d3caca58fda41f
CRs-Fixed: 986480

hif/src/dispatcher/dummy.c

@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2016 The Linux Foundation. All rights reserved.
+ *
+ * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
+ *
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This file was originally distributed by Qualcomm Atheros, Inc.
+ * under proprietary terms before Copyright ownership was assigned
+ * to the Linux Foundation.
+ */
+
+#include "qdf_types.h"
+#include "dummy.h"
+#include "hif_debug.h"
+
+/**
+ * hif_dummy_bus_prevent_linkdown() - prevent linkdown
+ * @hif_ctx: hif context
+ * @flag: weather to keep the bus alive or not
+ *
+ * Dummy function for busses and platforms that do not support
+ * link down.  This may need to be replaced with a wakelock.
+ */
+void hif_dummy_bus_prevent_linkdown(struct hif_softc *scn, bool flag)
+{
+	HIF_ERROR("wlan: %s pcie power collapse ignored",
+			(flag ? "disable" : "enable"));
+}
+
+/**
+ * hif_reset_soc(): reset soc
+ *
+ * this function resets soc
+ *
+ * @hif_ctx: HIF context
+ *
+ * Return: void
+ */
+/* Function to reset SoC */
+void hif_dummy_reset_soc(struct hif_softc *hif_ctx)
+{
+}
+
+/**
+ * hif_dummy_suspend() - suspend the bus
+ * @hif_ctx: hif context
+ *
+ * dummy for busses that don't need to suspend.
+ *
+ * Return: 0 for success and non-zero for failure
+ */
+int hif_dummy_bus_suspend(struct hif_softc *hif_ctx)
+{
+	return 0;
+}
+
+/**
+ * hif_dummy_resume() - hif resume API
+ *
+ * This function resumes the bus. but snoc doesn't need to resume.
+ * Therefore do nothing.
+ *
+ * Return: 0 for success and non-zero for failure
+ */
+int hif_dummy_bus_resume(struct hif_softc *hif_ctx)
+{
+	return 0;
+}
+
+/**
+ * hif_dummy_target_sleep_state_adjust() - api to adjust state of target
+ * @scn: hif context
+ * @sleep_ok: allow or deny target to go to sleep
+ * @wait_for_it: ensure target has change
+ */
+int hif_dummy_target_sleep_state_adjust(struct hif_softc *scn,
+						bool sleep_ok, bool wait_for_it)
+{
+	return 0;
+}

hif/src/dispatcher/dummy.h

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2016 The Linux Foundation. All rights reserved.
+ *
+ * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
+ *
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This file was originally distributed by Qualcomm Atheros, Inc.
+ * under proprietary terms before Copyright ownership was assigned
+ * to the Linux Foundation.
+ */
+struct hif_softc;
+
+void hif_dummy_bus_prevent_linkdown(struct hif_softc *scn, bool flag);
+void hif_dummy_reset_soc(struct hif_softc *scn);
+int hif_dummy_bus_suspend(struct hif_softc *hif_ctx);
+int hif_dummy_bus_resume(struct hif_softc *hif_ctx);
+int hif_dummy_target_sleep_state_adjust(struct hif_softc *scn,
+					bool sleep_ok, bool wait_for_it);
+

hif/src/dispatcher/multibus.c

@@ -120,3 +120,41 @@ void hif_bus_close(struct hif_softc *hif_sc)
 {
 	hif_sc->bus_ops.hif_bus_close(hif_sc);
 }
+
+/**
+ * hif_bus_prevent_linkdown() - prevent linkdown
+ * @hif_ctx: hif context
+ * @flag: true = keep bus alive false = let bus go to sleep
+ *
+ * Keeps the bus awake durring suspend.
+ */
+void hif_bus_prevent_linkdown(struct hif_softc *hif_sc, bool flag)
+{
+	hif_sc->bus_ops.hif_bus_prevent_linkdown(hif_sc, flag);
+}
+
+
+void hif_reset_soc(struct hif_opaque_softc *hif_ctx)
+{
+	struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
+	hif_sc->bus_ops.hif_reset_soc(hif_sc);
+}
+
+int hif_bus_suspend(struct hif_opaque_softc *hif_ctx)
+{
+	struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
+	return hif_sc->bus_ops.hif_bus_suspend(hif_sc);
+}
+
+int hif_bus_resume(struct hif_opaque_softc *hif_ctx)
+{
+	struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
+	return hif_sc->bus_ops.hif_bus_resume(hif_sc);
+}
+
+int hif_target_sleep_state_adjust(struct hif_softc *hif_sc,
+			      bool sleep_ok, bool wait_for_it)
+{
+	return hif_sc->bus_ops.hif_target_sleep_state_adjust(hif_sc,
+			sleep_ok, wait_for_it);
+}

hif/src/dispatcher/multibus.h

@@ -38,6 +38,12 @@ struct hif_bus_ops {
 	QDF_STATUS (*hif_bus_open)(struct hif_softc *hif_sc,
 				   enum qdf_bus_type bus_type);
 	void (*hif_bus_close)(struct hif_softc *hif_sc);
+	void (*hif_bus_prevent_linkdown)(struct hif_softc *hif_sc, bool flag);
+	void (*hif_reset_soc)(struct hif_softc *hif_sc);
+	int (*hif_bus_suspend)(struct hif_softc *hif_ctx);
+	int (*hif_bus_resume)(struct hif_softc *hif_ctx);
+	int (*hif_target_sleep_state_adjust)(struct hif_softc *scn,
+					bool sleep_ok, bool wait_for_it);
 };
 
 #ifdef HIF_SNOC

hif/src/dispatcher/multibus_pci.c

@@ -39,5 +39,12 @@ QDF_STATUS hif_initialize_pci_ops(struct hif_bus_ops *bus_ops)
 {
 	bus_ops->hif_bus_open = &hif_pci_open;
 	bus_ops->hif_bus_close = &hif_pci_close;
+	bus_ops->hif_bus_prevent_linkdown = &hif_pci_prevent_linkdown;
+	bus_ops->hif_reset_soc = &hif_pci_reset_soc;
+	bus_ops->hif_bus_suspend = &hif_pci_bus_suspend;
+	bus_ops->hif_bus_resume = &hif_pci_bus_resume;
+	bus_ops->hif_target_sleep_state_adjust =
+		&hif_pci_target_sleep_state_adjust;
+
 	return QDF_STATUS_SUCCESS;
 }

hif/src/dispatcher/multibus_snoc.c

@@ -29,6 +29,7 @@
 #include "hif.h"
 #include "hif_main.h"
 #include "snoc_api.h"
+#include "dummy.h"
 
 /**
  * hif_initialize_pci_ops() - initialize the pci ops
@@ -40,5 +41,12 @@ QDF_STATUS hif_initialize_snoc_ops(struct hif_bus_ops *bus_ops)
 {
 	bus_ops->hif_bus_open = &hif_snoc_open;
 	bus_ops->hif_bus_close = &hif_snoc_close;
+	bus_ops->hif_bus_prevent_linkdown = &hif_dummy_bus_prevent_linkdown;
+	bus_ops->hif_reset_soc = &hif_dummy_reset_soc;
+	bus_ops->hif_bus_suspend = &hif_dummy_bus_suspend;
+	bus_ops->hif_bus_resume = &hif_dummy_bus_resume;
+	bus_ops->hif_target_sleep_state_adjust =
+		&hif_dummy_target_sleep_state_adjust;
+
 	return QDF_STATUS_SUCCESS;
 }

hif/src/dispatcher/pci_api.h

@@ -28,3 +28,9 @@
 QDF_STATUS hif_pci_open(struct hif_softc *hif_ctx,
 			enum qdf_bus_type bus_type);
 void hif_pci_close(struct hif_softc *hif_ctx);
+void hif_pci_prevent_linkdown(struct hif_softc *scn, bool flag);
+void hif_pci_reset_soc(struct hif_softc *ol_sc);
+int hif_pci_bus_suspend(struct hif_softc *scn);
+int hif_pci_bus_resume(struct hif_softc *scn);
+int hif_pci_target_sleep_state_adjust(struct hif_softc *scn,
+			      bool sleep_ok, bool wait_for_it);

hif/src/hif_main.h

@@ -190,4 +190,7 @@ struct hif_callbacks *hif_get_callbacks_handle(struct hif_softc *scn);
 bool hif_is_driver_unloading(struct hif_softc *scn);
 bool hif_is_load_or_unload_in_progress(struct hif_softc *scn);
 bool hif_is_recovery_in_progress(struct hif_softc *scn);
+int hif_target_sleep_state_adjust(struct hif_softc *scn,
+					 bool sleep_ok,
+					 bool wait_for_it);
 #endif /* __HIF_MAIN_H__ */

hif/src/pcie/hif_io32_pci.h

@@ -88,10 +88,6 @@
 #define hif_write32_mb(addr, value) \
 	iowrite32((u32)(value), (void __iomem *)(addr))
 
-extern int hif_target_sleep_state_adjust(struct hif_softc *scn,
-					 bool sleep_ok,
-					 bool wait_for_it);
-
 #if CONFIG_ATH_PCIE_MAX_PERF
 #define A_TARGET_ACCESS_BEGIN(scn) \
 	do {struct hif_softc *unused = scn; \

hif/src/pcie/if_pci.c

@@ -1236,7 +1236,7 @@ void hif_enable_power_management(struct hif_opaque_softc *hif_ctx,
 
 	if (!CONFIG_ATH_PCIE_MAX_PERF &&
 	    CONFIG_ATH_PCIE_AWAKE_WHILE_DRIVER_LOAD) {
-		if (hif_target_sleep_state_adjust(hif_sc, true, false) < 0)
+		if (hif_pci_target_sleep_state_adjust(hif_sc, true, false) < 0)
 			HIF_ERROR("%s, failed to set target to sleep",
 				  __func__);
 	}
@@ -1725,7 +1725,8 @@ int hif_bus_configure(struct hif_softc *hif_sc)
 	if (CONFIG_ATH_PCIE_MAX_PERF ||
 	    CONFIG_ATH_PCIE_AWAKE_WHILE_DRIVER_LOAD) {
 		/* Force AWAKE forever/till the driver is loaded */
-		if (hif_target_sleep_state_adjust(hif_sc, false, true) < 0) {
+		if (hif_pci_target_sleep_state_adjust(hif_sc, false, true)
+				< 0) {
 			status = -EACCES;
 			goto disable_wlan;
 		}
@@ -2259,7 +2260,7 @@ static void hif_runtime_prevent_linkdown(struct hif_softc *scn, bool flag)
  *
  * Return: n/a
  */
-void hif_bus_prevent_linkdown(struct hif_softc *scn, bool flag)
+void hif_pci_prevent_linkdown(struct hif_softc *scn, bool flag)
 {
 	HIF_ERROR("wlan: %s pcie power collapse",
 			(flag ? "disable" : "enable"));
@@ -2267,7 +2268,7 @@ void hif_bus_prevent_linkdown(struct hif_softc *scn, bool flag)
 	cnss_wlan_pm_control(flag);
 }
 #else
-void hif_bus_prevent_linkdown(struct hif_opaque_softc *scn, bool flag)
+void hif_pci_prevent_linkdown(struct hif_opaque_softc *scn, bool flag)
 {
 	HIF_ERROR("wlan: %s pcie power collapse",
 			(flag ? "disable" : "enable"));
@@ -2427,17 +2428,15 @@ static int hif_bus_resume_link_down(struct hif_softc *scn)
 }
 
 /**
- * hif_bus_suspend(): prepare hif for suspend
+ * hif_pci_suspend(): prepare hif for suspend
  *
  * chose suspend type based on link suspend voting.
  *
  * Return: 0 for success and non-zero error code for failure
  */
-int hif_bus_suspend(struct hif_opaque_softc *hif_ctx)
+int hif_pci_bus_suspend(struct hif_softc *scn)
 {
-	struct hif_softc *scn = HIF_GET_SOFTC(hif_ctx);
-
-	if (hif_can_suspend_link(hif_ctx))
+	if (hif_can_suspend_link(GET_HIF_OPAQUE_HDL(scn)))
 		return hif_bus_suspend_link_down(scn);
 	else
 		return hif_bus_suspend_link_up(scn);
@@ -2450,11 +2449,9 @@ int hif_bus_suspend(struct hif_opaque_softc *hif_ctx)
  *
  * Return: 0 for success and non-zero error code for failure
  */
-int hif_bus_resume(struct hif_opaque_softc *hif_ctx)
+int hif_pci_bus_resume(struct hif_softc *scn)
 {
-	struct hif_softc *scn = HIF_GET_SOFTC(hif_ctx);
-
-	if (hif_can_suspend_link(hif_ctx))
+	if (hif_can_suspend_link(GET_HIF_OPAQUE_HDL(scn)))
 		return hif_bus_resume_link_down(scn);
 	else
 		return hif_bus_resume_link_up(scn);
@@ -2660,7 +2657,7 @@ void hif_process_runtime_resume_success(struct hif_opaque_softc *hif_ctx)
  */
 int hif_runtime_suspend(struct hif_opaque_softc *hif_ctx)
 {
-	return hif_bus_suspend(hif_ctx);
+	return hif_pci_bus_suspend(HIF_GET_SOFTC(hif_ctx));
 }
 
 #ifdef WLAN_FEATURE_FASTPATH
@@ -2704,7 +2701,7 @@ static void hif_fastpath_resume(struct hif_opaque_softc *hif_ctx) {}
  */
 int hif_runtime_resume(struct hif_opaque_softc *hif_ctx)
 {
-	int status = hif_bus_resume(hif_ctx);
+	int status = hif_pci_bus_resume(HIF_GET_SOFTC(hif_ctx));
 
 	hif_fastpath_resume(hif_ctx);
 
@@ -2743,9 +2740,10 @@ void hif_disable_isr(struct hif_opaque_softc *ol_sc)
 }
 
 /* Function to reset SoC */
-void hif_reset_soc(struct hif_opaque_softc *ol_sc)
+void hif_pci_reset_soc(struct hif_softc *hif_sc)
 {
-	struct hif_pci_softc *sc = HIF_GET_PCI_SOFTC(ol_sc);
+	struct hif_pci_softc *sc = HIF_GET_PCI_SOFTC(hif_sc);
+	struct hif_opaque_softc *ol_sc = GET_HIF_OPAQUE_HDL(hif_sc);
 	struct hif_target_info *tgt_info = hif_get_target_info_handle(ol_sc);
 
 #if defined(CPU_WARM_RESET_WAR)
@@ -2874,8 +2872,7 @@ static int hif_log_soc_wakeup_timeout(struct hif_pci_softc *sc)
  * Return: int
  */
 #if ((CONFIG_ATH_PCIE_MAX_PERF == 0) && CONFIG_ATH_PCIE_AWAKE_WHILE_DRIVER_LOAD)
-int
-hif_target_sleep_state_adjust(struct hif_softc *scn,
+int hif_pci_target_sleep_state_adjust(struct hif_softc *scn,
 			      bool sleep_ok, bool wait_for_it)
 {
 	struct HIF_CE_state *hif_state = HIF_GET_CE_STATE(scn);
@@ -2991,7 +2988,7 @@ hif_target_sleep_state_adjust(struct hif_softc *scn,
 }
 #else
 inline int
-hif_target_sleep_state_adjust(struct hif_softc *scn,
+hif_pci_sleep_state_adjust(struct hif_softc *scn,
 			      bool sleep_ok, bool wait_for_it)
 {
 	return 0;

hif/src/snoc/hif_io32_snoc.h

@@ -66,27 +66,6 @@
 #define Q_TARGET_ACCESS_BEGIN(scn) 0
 #define Q_TARGET_ACCESS_END(scn) 0
 
-static inline void hif_pci_cancel_deferred_target_sleep(struct hif_softc *scn)
-{
-	return;
-}
-
-static inline void hif_target_sleep_state_adjust(struct hif_softc *scn,
-						bool sleep_ok, bool wait_for_it)
-{
-	return;
-}
-
-/**
- * soc_wake_reset() - soc_wake_reset
- * @scn: hif_softc
- *
- * Return: void
- */
-static inline void soc_wake_reset(struct hif_softc *scn)
-{
-}
-
 /**
  * hif_write32_mb - SNOC write 32
  * @addr: physical address

hif/src/snoc/if_snoc.c

@@ -38,50 +38,6 @@
 #include "ce_main.h"
 #include "ce_tasklet.h"
 
-/**
- * hif_bus_prevent_linkdown(): prevent linkdown
- *
- * Dummy function for busses and platforms that do not support
- * link down.  This may need to be replaced with a wakelock.
- *
- * This is duplicated here because CONFIG_CNSS can be defined
- * even though it is not used for the snoc bus.
- */
-void hif_bus_prevent_linkdown(struct hif_softc *scn, bool flag)
-{
-	HIF_ERROR("wlan: %s pcie power collapse ignored",
-			(flag ? "disable" : "enable"));
-}
-
-/**
- * hif_targ_is_awake(): check if target is awake
- *
- * This function returns true if the target is awake
- *
- * @scn: struct hif_softc
- * @mem: mapped mem base
- *
- * Return: bool
- */
-bool hif_targ_is_awake(struct hif_softc *scn, void *__iomem *mem)
-{
-	return true;
-}
-
-/**
- * hif_reset_soc(): reset soc
- *
- * this function resets soc
- *
- * @hif_ctx: HIF context
- *
- * Return: void
- */
-/* Function to reset SoC */
-void hif_reset_soc(struct hif_opaque_softc *hif_ctx)
-{
-}
-
 /**
  * hif_disable_isr(): disable isr
  *
@@ -136,33 +92,7 @@ int hif_dump_registers(struct hif_opaque_softc *hif_ctx)
 }
 
 /**
- * hif_bus_suspend() - suspend the bus
- *
- * This function suspends the bus, but snoc doesn't need to suspend.
- * Therefore do nothing.
- *
- * Return: 0 for success and non-zero for failure
- */
-int hif_bus_suspend(struct hif_opaque_softc *hif_ctx)
-{
-	return 0;
-}
-
-/**
- * hif_bus_resume() - hif resume API
- *
- * This function resumes the bus. but snoc doesn't need to resume.
- * Therefore do nothing.
- *
- * Return: 0 for success and non-zero for failure
- */
-int hif_bus_resume(struct hif_opaque_softc *hif_ctx)
-{
-	return 0;
-}
-
-/**
- * hif_bus_close(): hif_bus_close
+ * hif_snoc_close(): hif_bus_close
  *
  * Return: n/a
  */