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Commit 2a2981c6 authored by Ashok Vuyyuru's avatar Ashok Vuyyuru
Browse files

msm: ipa3: Deepsleep enable changes 

Adding support to deepsleep scenario.

Change-Id: I2b388396cf9a7f26f77bbcd49c1014e16475a980
parent 1ed7eace

drivers/platform/msm/gsi/gsi.c

+1 −2
Original line number Diff line number Diff line
@@ -1482,8 +1482,7 @@ int gsi_deregister_device(unsigned long dev_hdl, bool force) 


	devm_free_irq(gsi_ctx->dev, gsi_ctx->per.irq, gsi_ctx);

	gsi_unmap_base();

	memset(gsi_ctx, 0, sizeof(*gsi_ctx));



	gsi_ctx->per_registered = false;

	return GSI_STATUS_SUCCESS;

}

EXPORT_SYMBOL(gsi_deregister_device);

drivers/platform/msm/ipa/ipa_v3/ipa.c

+130 −4
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ 
#include <linux/jiffies.h>

#include <linux/delay.h>

#include <linux/wait.h>

#include <linux/suspend.h>



#ifdef CONFIG_ARM64
@@ -124,6 +125,11 @@ static void ipa_gsi_notify_cb(struct gsi_per_notify *notify); 
static int ipa3_attach_to_smmu(void);

static int ipa3_alloc_pkt_init(void);



#ifdef CONFIG_DEEPSLEEP

static void ipa3_deepsleep_resume(void);

static void ipa3_deepsleep_suspend(void);

#endif



static void ipa3_load_ipa_fw(struct work_struct *work);

static DECLARE_WORK(ipa3_fw_loading_work, ipa3_load_ipa_fw);

static DECLARE_DELAYED_WORK(ipa3_fw_load_failure_handle, ipa3_load_ipa_fw);
@@ -438,6 +444,38 @@ int ipa_smmu_free_sgt(struct sg_table **out_sgt_ptr) 
}

EXPORT_SYMBOL(ipa_smmu_free_sgt);



/**

 * ipa_pm_notify() - PM notify to listen suspend events

 *

 * This callback will be invoked by the pm framework to suspend

 * operation is invoked.

 *

 * Returns NOTIFY_DONE to pm framework completed operation.

 */



static int ipa_pm_notify(struct notifier_block *b, unsigned long event, void *p)

{

	IPAERR("Entry\n");

	switch (event) {

		case PM_POST_SUSPEND:

#ifdef CONFIG_DEEPSLEEP

			if (mem_sleep_current == PM_SUSPEND_MEM) {

				IPADBG("Enter deepsleep resume\n");

				ipa3_deepsleep_resume();

				IPADBG("Exit deepsleep resume\n");

			}

#endif

			break;

	}

	IPAERR("Exit\n");

	return NOTIFY_DONE;

}





static struct notifier_block ipa_pm_notifier = {

	.notifier_call = ipa_pm_notify,

};



static const struct dev_pm_ops ipa_pm_ops = {

	.suspend_late = ipa3_ap_suspend,

	.resume_early = ipa3_ap_resume,
@@ -5063,6 +5101,7 @@ static void ipa3_teardown_apps_pipes(void) 
	__ipa3_del_rt_rule(ipa3_ctx->dflt_v4_rt_rule_hdl);

	__ipa3_del_hdr(ipa3_ctx->excp_hdr_hdl, false);

	ipa3_teardown_sys_pipe(ipa3_ctx->clnt_hdl_cmd);

	ipa3_dealloc_common_event_ring();

}



#ifdef CONFIG_COMPAT
@@ -6317,6 +6356,12 @@ static inline void ipa3_enable_napi_lan_rx(void) 
		napi_enable(&ipa3_ctx->napi_lan_rx);

}



static inline void ipa3_disable_napi_lan_rx(void)

{

	if (ipa3_ctx->lan_rx_napi_enable)

		napi_disable(&ipa3_ctx->napi_lan_rx);

}



static inline void ipa3_register_to_fmwk(void)

{

	struct ipa_core_data data;
@@ -6691,6 +6736,11 @@ static int ipa3_post_init(const struct ipa3_plat_drv_res *resource_p, 
		IPADBG("register to fmwk\n");

		ipa3_register_to_fmwk();

	}



#ifdef CONFIG_DEEPSLEEP

	if (!ipa3_is_ready())

		ipa_fmwk_deepsleep_exit_ipa();

#endif

	complete_all(&ipa3_ctx->init_completion_obj);



	ipa_ut_module_init();
@@ -6793,13 +6843,12 @@ static int ipa3_manual_load_ipa_fws(void) 


static int ipa3_pil_load_ipa_fws(const char *sub_sys)

{

	void *subsystem_get_retval = NULL;



	IPADBG("PIL FW loading process initiated sub_sys=%s\n",

		sub_sys);



	subsystem_get_retval = subsystem_get(sub_sys);

	if (IS_ERR_OR_NULL(subsystem_get_retval)) {

	ipa3_ctx->subsystem_get_retval = subsystem_get(sub_sys);

	if (IS_ERR_OR_NULL(ipa3_ctx->subsystem_get_retval)) {

		IPAERR("Unable to PIL load FW for sub_sys=%s\n", sub_sys);

		return -EINVAL;

	}
@@ -6808,6 +6857,20 @@ static int ipa3_pil_load_ipa_fws(const char *sub_sys) 
	return 0;

}



#ifdef CONFIG_DEEPSLEEP

static int ipa3_pil_unload_ipa_fws(void)

{



	IPADBG("PIL FW unloading process initiated sub_sys\n");



	if (ipa3_ctx->subsystem_get_retval)

		subsystem_put(ipa3_ctx->subsystem_get_retval);



	IPADBG("PIL FW unloading process is complete sub_sys\n");

	return 0;

}

#endif



static void ipa3_load_ipa_fw(struct work_struct *work)

{

	int result;
@@ -9513,7 +9576,8 @@ int ipa3_ap_suspend(struct device *dev) 
	int i;



	IPADBG("Enter...\n");



	if (!of_device_is_compatible(dev->of_node,"qcom,ipa"))

		return 0;

	/* In case there is a tx/rx handler in polling mode fail to suspend */

	for (i = 0; i < ipa3_ctx->ipa_num_pipes; i++) {

		if (ipa3_ctx->ep[i].sys &&
@@ -9524,6 +9588,13 @@ int ipa3_ap_suspend(struct device *dev) 
		}

	}



#ifdef CONFIG_DEEPSLEEP

	if (mem_sleep_current == PM_SUSPEND_MEM) {

		IPADBG("Enter deepsleep suspend\n");

		ipa3_deepsleep_suspend();

		IPADBG("Exit deepsleep suspend\n");

	}

#endif

	ipa_pm_deactivate_all_deferred();



	IPADBG("Exit\n");
@@ -9556,6 +9627,58 @@ bool ipa3_get_lan_rx_napi(void) 
	return ipa3_ctx->lan_rx_napi_enable;

}





#ifdef CONFIG_DEEPSLEEP

static void ipa3_deepsleep_suspend(void)

{

	IPADBG("Entry\n");

	IPA_ACTIVE_CLIENTS_INC_SIMPLE();



	/* To allow default routing table delection using this flag */

	ipa3_ctx->deepsleep = true;

	/*Disabling the LAN NAPI*/

	ipa3_disable_napi_lan_rx();

	/*NOt allow uC related operations until uC load again*/

	ipa3_ctx->uc_ctx.uc_loaded = false;

	/*Disconnecting LAN PROD/LAN CONS/CMD PROD apps pipes*/

	ipa3_teardown_apps_pipes();

	/*Deregistering the GSI driver*/

	gsi_deregister_device(ipa3_ctx->gsi_dev_hdl, false);

	/*Destroying filter table ids*/

	ipa3_destroy_flt_tbl_idrs();

	/*Disabling IPA interrupt*/

	ipa3_remove_interrupt_handler(IPA_TX_SUSPEND_IRQ);

	ipa3_interrupts_destroy(ipa3_res.ipa_irq, &ipa3_ctx->master_pdev->dev);

	/*Destroy the NAT device*/

	ipa3_nat_ipv6ct_destroy_devices();

	/*Freeing memory allocated for coalesing and dma task*/

	ipa3_free_coal_close_frame();

	ipa3_free_dma_task_for_gsi();

	/*Destroying ipa hal module*/

	ipahal_destroy();

	ipa3_ctx->ipa_initialization_complete = false;

	ipa3_debugfs_remove();

	/*Unloading IPA FW to allow FW load in resume*/

	ipa3_pil_unload_ipa_fws();

	/*Calling framework API to reset IPA ready flag to false*/

	ipa_fmwk_deepsleep_entry_ipa();

	IPA_ACTIVE_CLIENTS_DEC_SIMPLE();

	IPADBG("Exit\n");

}



static void ipa3_deepsleep_resume(void)

{



	IPADBG("Entry\n");

	/*After deeplseep exit we shouldn't allow delete the default routing table*/

	ipa3_ctx->deepsleep = false;

	/*Scheduling WQ to load IPA FW*/

	queue_work(ipa3_ctx->transport_power_mgmt_wq,

		&ipa3_fw_loading_work);

	IPADBG("Exit\n");

}

#endif



static void ipa_gsi_notify_cb(struct gsi_per_notify *notify)

{

	/*
@@ -9985,6 +10108,8 @@ static int __init ipa_module_init(void) 
		/* Register as a PCI device driver */

		return pci_register_driver(&ipa_pci_driver);

	}



	register_pm_notifier(&ipa_pm_notifier);

	/* Register as a platform device driver */

	return platform_driver_register(&ipa_plat_drv);

}
@@ -9995,6 +10120,7 @@ static void __exit ipa_module_exit(void) 
	if (running_emulation)

		pci_unregister_driver(&ipa_pci_driver);

	platform_driver_unregister(&ipa_plat_drv);

	unregister_pm_notifier(&ipa_pm_notifier);

	kfree(ipa3_ctx);

	ipa3_ctx = NULL;

}

drivers/platform/msm/ipa/ipa_v3/ipa_dp.c

+7 −0
Original line number Diff line number Diff line
@@ -4741,6 +4741,13 @@ static void ipa_dma_gsi_irq_rx_notify_cb(struct gsi_chan_xfer_notify *notify) 
	}

}



void ipa3_dealloc_common_event_ring(void)

{

	IPA_ACTIVE_CLIENTS_INC_SIMPLE();

	gsi_dealloc_evt_ring(ipa3_ctx->gsi_evt_comm_hdl);

	IPA_ACTIVE_CLIENTS_DEC_SIMPLE();

}



int ipa3_alloc_common_event_ring(void)

{

	struct gsi_evt_ring_props gsi_evt_ring_props;

drivers/platform/msm/ipa/ipa_v3/ipa_i.h

+3 −1
Original line number Diff line number Diff line
@@ -2125,6 +2125,8 @@ struct ipa3_context { 
	bool (*get_teth_port_state[IPA_MAX_CLNT])(void);



	atomic_t is_ssr;

	bool deepsleep;

	void *subsystem_get_retval;

	struct IpaHwOffloadStatsAllocCmdData_t

		gsi_info[IPA_HW_PROTOCOL_MAX];

	bool ipa_wan_skb_page;
@@ -2506,7 +2508,6 @@ int ipa3_start_stop_client_prod_gsi_chnl(enum ipa_client_type client, 
		bool start_chnl);

void ipa3_client_prod_post_shutdown_cleanup(void);





int ipa3_set_reset_client_cons_pipe_sus_holb(bool set_reset, u32 tmr_val,

		enum ipa_client_type client);
@@ -3124,6 +3125,7 @@ int ipa3_get_ntn_stats(struct Ipa3HwStatsNTNInfoData_t *stats); 
struct dentry *ipa_debugfs_get_root(void);

void ipa3_enable_dcd(void);

void ipa3_disable_prefetch(enum ipa_client_type client);

void ipa3_dealloc_common_event_ring(void);

int ipa3_alloc_common_event_ring(void);

int ipa3_allocate_dma_task_for_gsi(void);

void ipa3_free_dma_task_for_gsi(void);

drivers/platform/msm/ipa/ipa_v3/ipa_rt.c

+1 −1
Original line number Diff line number Diff line
@@ -1753,7 +1753,7 @@ int __ipa3_del_rt_rule(u32 rule_hdl) 
		!strcmp(entry->tbl->name, IPA_DFLT_RT_TBL_NAME)) {

		IPADBG("Deleting rule from default rt table idx=%u\n",

			entry->tbl->idx);

		if (entry->tbl->rule_cnt == 1) {

		if (entry->tbl->rule_cnt == 1 && !ipa3_ctx->deepsleep) {

			IPAERR_RL("Default tbl last rule cannot be deleted\n");

			return -EINVAL;

		}