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/*
* Copyright (c) 2016-2017 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.
*/
/* this file dispatches functions to bus specific definitions */
#include "hif_debug.h"
#include "hif.h"
#include "hif_main.h"
#include "hif_io32.h"
#include "multibus.h"
#include "dummy.h"
#if defined(HIF_PCI) || defined(HIF_SNOC) || defined(HIF_AHB)
#include "ce_main.h"
#endif
#include "htc_services.h"
#include "a_types.h"
#include "dummy.h"
/**
* hif_intialize_default_ops() - intializes default operations values
*
* bus specific features should assign their dummy implementations here.
*/
static void hif_intialize_default_ops(struct hif_softc *hif_sc)
{
struct hif_bus_ops *bus_ops = &hif_sc->bus_ops;
/* must be filled in by hif_bus_open */
bus_ops->hif_bus_close = NULL;
/* dummy implementations */
bus_ops->hif_display_stats =
&hif_dummy_display_stats;
bus_ops->hif_clear_stats =
&hif_dummy_clear_stats;
bus_ops->hif_set_bundle_mode = &hif_dummy_set_bundle_mode;
bus_ops->hif_bus_reset_resume = &hif_dummy_bus_reset_resume;
bus_ops->hif_bus_suspend_noirq = &hif_dummy_bus_suspend_noirq;
bus_ops->hif_bus_resume_noirq = &hif_dummy_bus_resume_noirq;
bus_ops->hif_bus_early_suspend = &hif_dummy_bus_suspend;
bus_ops->hif_bus_late_resume = &hif_dummy_bus_resume;
}
#define NUM_OPS (sizeof(struct hif_bus_ops) / sizeof(void *))
/**
* hif_verify_basic_ops() - ensure required bus apis are defined
*
* all bus operations must be defined to avoid crashes
* itterate over the structure and ensure all function pointers
* are non null.
*
* Return: QDF_STATUS_SUCCESS if all the operations are defined
*/
static QDF_STATUS hif_verify_basic_ops(struct hif_softc *hif_sc)
{
struct hif_bus_ops *bus_ops = &hif_sc->bus_ops;
void **ops_array = (void *)bus_ops;
QDF_STATUS status = QDF_STATUS_SUCCESS;
int i;
for (i = 0; i < NUM_OPS; i++) {
if (!ops_array[i]) {
HIF_ERROR("%s: function %d is null", __func__, i);
status = QDF_STATUS_E_NOSUPPORT;
}
}
return status;
}
/**
* hif_bus_get_context_size - API to return size of the bus specific structure
*
* Return: sizeof of hif_pci_softc
*/
int hif_bus_get_context_size(enum qdf_bus_type bus_type)
{
switch (bus_type) {
case QDF_BUS_TYPE_PCI:
return hif_pci_get_context_size();
case QDF_BUS_TYPE_AHB:
return hif_ahb_get_context_size();
case QDF_BUS_TYPE_SNOC:
return hif_snoc_get_context_size();
case QDF_BUS_TYPE_SDIO:
return hif_sdio_get_context_size();
case QDF_BUS_TYPE_USB:
return hif_usb_get_context_size();
default:
return 0;
}
}
/**
* hif_bus_open() - initialize the bus_ops and call the bus specific open
* hif_sc: hif_context
* bus_type: type of bus being enumerated
*
* Return: QDF_STATUS_SUCCESS or error
*/
QDF_STATUS hif_bus_open(struct hif_softc *hif_sc,
enum qdf_bus_type bus_type)
{
QDF_STATUS status = QDF_STATUS_E_INVAL;
hif_intialize_default_ops(hif_sc);
switch (bus_type) {
case QDF_BUS_TYPE_PCI:
status = hif_initialize_pci_ops(hif_sc);
break;
case QDF_BUS_TYPE_SNOC:
status = hif_initialize_snoc_ops(&hif_sc->bus_ops);
break;
case QDF_BUS_TYPE_AHB:
status = hif_initialize_ahb_ops(&hif_sc->bus_ops);
break;
case QDF_BUS_TYPE_SDIO:
status = hif_initialize_sdio_ops(hif_sc);
break;
case QDF_BUS_TYPE_USB:
status = hif_initialize_usb_ops(&hif_sc->bus_ops);
break;
default:
status = QDF_STATUS_E_NOSUPPORT;
break;
}
if (status != QDF_STATUS_SUCCESS) {
HIF_ERROR("%s: %d not supported", __func__, bus_type);
return status;
}
status = hif_verify_basic_ops(hif_sc);
if (status != QDF_STATUS_SUCCESS)
return status;
return hif_sc->bus_ops.hif_bus_open(hif_sc, bus_type);
}
/**
* hif_bus_close() - close the bus
* @hif_sc: hif_context
*/
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_early_suspend(struct hif_opaque_softc *hif_ctx)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
return hif_sc->bus_ops.hif_bus_early_suspend(hif_sc);
}
int hif_bus_late_resume(struct hif_opaque_softc *hif_ctx)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
return hif_sc->bus_ops.hif_bus_late_resume(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_bus_suspend_noirq(struct hif_opaque_softc *hif_ctx)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
return hif_sc->bus_ops.hif_bus_suspend_noirq(hif_sc);
}
int hif_bus_resume_noirq(struct hif_opaque_softc *hif_ctx)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
return hif_sc->bus_ops.hif_bus_resume_noirq(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);
}
void hif_disable_isr(struct hif_opaque_softc *hif_hdl)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_hdl);
hif_sc->bus_ops.hif_disable_isr(hif_sc);
}
void hif_nointrs(struct hif_softc *hif_sc)
{
hif_sc->bus_ops.hif_nointrs(hif_sc);
}
QDF_STATUS hif_enable_bus(struct hif_softc *hif_sc, struct device *dev,
void *bdev, const struct hif_bus_id *bid,
enum hif_enable_type type)
{
return hif_sc->bus_ops.hif_enable_bus(hif_sc, dev, bdev, bid, type);
}
void hif_disable_bus(struct hif_softc *hif_sc)
{
hif_sc->bus_ops.hif_disable_bus(hif_sc);
}
int hif_bus_configure(struct hif_softc *hif_sc)
{
return hif_sc->bus_ops.hif_bus_configure(hif_sc);
}
QDF_STATUS hif_get_config_item(struct hif_opaque_softc *hif_ctx,
int opcode, void *config, uint32_t config_len)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
return hif_sc->bus_ops.hif_get_config_item(hif_sc, opcode, config,
config_len);
}
void hif_set_mailbox_swap(struct hif_opaque_softc *hif_ctx)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
hif_sc->bus_ops.hif_set_mailbox_swap(hif_sc);
}
void hif_claim_device(struct hif_opaque_softc *hif_ctx)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
hif_sc->bus_ops.hif_claim_device(hif_sc);
}
void hif_shutdown_device(struct hif_opaque_softc *hif_ctx)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
hif_sc->bus_ops.hif_shutdown_device(hif_sc);
}
void hif_stop(struct hif_opaque_softc *hif_ctx)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx);
hif_sc->bus_ops.hif_stop(hif_sc);
}
void hif_cancel_deferred_target_sleep(struct hif_softc *hif_sc)
{
return hif_sc->bus_ops.hif_cancel_deferred_target_sleep(hif_sc);
}
void hif_irq_enable(struct hif_softc *hif_sc, int irq_id)
{
hif_sc->bus_ops.hif_irq_enable(hif_sc, irq_id);
}
void hif_irq_disable(struct hif_softc *hif_sc, int irq_id)
{
hif_sc->bus_ops.hif_irq_disable(hif_sc, irq_id);
}
int hif_dump_registers(struct hif_opaque_softc *hif_hdl)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_hdl);
return hif_sc->bus_ops.hif_dump_registers(hif_sc);
}
void hif_dump_target_memory(struct hif_opaque_softc *hif_hdl,
void *ramdump_base,
uint32_t address, uint32_t size)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_hdl);
hif_sc->bus_ops.hif_dump_target_memory(hif_sc, ramdump_base,
address, size);
}
void hif_ipa_get_ce_resource(struct hif_opaque_softc *hif_hdl,
qdf_shared_mem_t **ce_sr,
uint32_t *ce_sr_ring_size,
qdf_dma_addr_t *ce_reg_paddr)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_hdl);
hif_sc->bus_ops.hif_ipa_get_ce_resource(hif_sc, ce_sr,
ce_sr_ring_size, ce_reg_paddr);
}
void hif_mask_interrupt_call(struct hif_opaque_softc *hif_hdl)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_hdl);
hif_sc->bus_ops.hif_mask_interrupt_call(hif_sc);
}
void hif_display_bus_stats(struct hif_opaque_softc *scn)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(scn);
hif_sc->bus_ops.hif_display_stats(hif_sc);
}
void hif_clear_bus_stats(struct hif_opaque_softc *scn)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(scn);
hif_sc->bus_ops.hif_clear_stats(hif_sc);
}
/**
* hif_enable_power_management() - enable power management after driver load
* @hif_hdl: opaque pointer to the hif context
* is_packet_log_enabled: true if packet log is enabled
*
* Driver load and firmware download are done in a high performance mode.
* Enable power management after the driver is loaded.
* packet log can require fewer power management features to be enabled.
*/
void hif_enable_power_management(struct hif_opaque_softc *hif_hdl,
bool is_packet_log_enabled)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_hdl);
hif_sc->bus_ops.hif_enable_power_management(hif_sc,
is_packet_log_enabled);
}
/**
* hif_disable_power_management() - reset the bus power management
* @hif_hdl: opaque pointer to the hif context
*
* return the power management of the bus to its default state.
* This isn't necessarily a complete reversal of its counterpart.
* This should be called when unloading the driver.
*/
void hif_disable_power_management(struct hif_opaque_softc *hif_hdl)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_hdl);
hif_sc->bus_ops.hif_disable_power_management(hif_sc);
}
/**
* hif_set_bundle_mode() - enable bundling and set default rx bundle cnt
* @scn: pointer to hif_opaque_softc structure
* @enabled: flag to enable/disable bundling
* @rx_bundle_cnt: bundle count to be used for RX
*
* Return: none
*/
void hif_set_bundle_mode(struct hif_opaque_softc *scn, bool enabled,
int rx_bundle_cnt)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(scn);
hif_sc->bus_ops.hif_set_bundle_mode(hif_sc, enabled, rx_bundle_cnt);
}
/**
* hif_bus_reset_resume() - resume the bus after reset
* @scn: struct hif_opaque_softc
*
* This function is called to tell the driver that USB device has been resumed
* and it has also been reset. The driver should redo any necessary
* initialization. This function resets WLAN SOC.
*
* Return: int 0 for success, non zero for failure
*/
int hif_bus_reset_resume(struct hif_opaque_softc *scn)
{
struct hif_softc *hif_sc = HIF_GET_SOFTC(scn);
return hif_sc->bus_ops.hif_bus_reset_resume(hif_sc);
}