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qcacmn: Add force wake APIs for register access

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Add force wake request/release API before accessing
BAR+4K register space.

Change-Id: I6583d24925de9f4464f800e19c2d27c0d1b62819
CRs-Fixed: 2302152
This commit is contained in:
Pramod Simha
2018-08-27 10:03:04 -07:00
committed by nshrivas
parent 3e4f08be93
commit 95c59f2993
1 changed files with 110 additions and 1 deletions
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111
hal/wifi3.0/hal_api.h
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@@ -35,6 +35,54 @@
#define WINDOW_START MAX_UNWINDOWED_ADDRESS
#define WINDOW_RANGE_MASK 0x7FFFF
/*
* BAR + 4K is always accessible, any access outside this
* space requires force wake procedure.
* OFFSET = 4K - 32 bytes = 0x4063
*/
#define MAPPED_REF_OFF 0x4063
#define FORCE_WAKE_DELAY_TIMEOUT 50
#define FORCE_WAKE_DELAY_MS 5
#ifndef QCA_WIFI_QCA6390
static inline int hal_force_wake_request(struct hal_soc *soc)
{
return 0;
}
static inline int hal_force_wake_release(struct hal_soc *soc)
{
return 0;
}
#else
static inline int hal_force_wake_request(struct hal_soc *soc)
{
uint32_t timeout = 0;
if (pld_force_wake_request(soc->qdf_dev->dev)) {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"%s: Request send failed \n", __func__);
return -EINVAL;
}
while (!pld_is_device_awake(soc->qdf_dev->dev) &&
timeout <= FORCE_WAKE_DELAY_TIMEOUT) {
mdelay(FORCE_WAKE_DELAY_MS);
timeout += FORCE_WAKE_DELAY_MS;
}
if (pld_is_device_awake(soc->qdf_dev->dev) == true)
return 0;
else
return -ETIMEDOUT;
}
static inline int hal_force_wake_release(struct hal_soc *soc)
{
return pld_force_wake_release(soc->qdf_dev->dev);
}
#endif
static inline void hal_select_window(struct hal_soc *hal_soc, uint32_t offset)
{
uint32_t window = (offset >> WINDOW_SHIFT) & WINDOW_VALUE_MASK;
@@ -51,10 +99,10 @@ static inline void hal_select_window(struct hal_soc *hal_soc, uint32_t offset)
* note3: WINDOW_VALUE_MASK = big enough that trying to write past that window
* would be a bug
*/
#ifndef QCA_WIFI_QCA6390
static inline void hal_write32_mb(struct hal_soc *hal_soc, uint32_t offset,
uint32_t value)
{
if (!hal_soc->use_register_windowing ||
offset < MAX_UNWINDOWED_ADDRESS) {
qdf_iowrite32(hal_soc->dev_base_addr + offset, value);
@@ -66,6 +114,35 @@ static inline void hal_write32_mb(struct hal_soc *hal_soc, uint32_t offset,
qdf_spin_unlock_irqrestore(&hal_soc->register_access_lock);
}
}
#else
static inline void hal_write32_mb(struct hal_soc *hal_soc, uint32_t offset,
uint32_t value)
{
if ((offset > MAPPED_REF_OFF) &&
hal_force_wake_request(hal_soc)) {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"%s: Wake up request failed\n", __func__);
return;
}
if (!hal_soc->use_register_windowing ||
offset < MAX_UNWINDOWED_ADDRESS) {
qdf_iowrite32(hal_soc->dev_base_addr + offset, value);
} else {
qdf_spin_lock_irqsave(&hal_soc->register_access_lock);
hal_select_window(hal_soc, offset);
qdf_iowrite32(hal_soc->dev_base_addr + WINDOW_START +
(offset & WINDOW_RANGE_MASK), value);
qdf_spin_unlock_irqrestore(&hal_soc->register_access_lock);
}
if ((offset > MAPPED_REF_OFF) &&
hal_force_wake_release(hal_soc))
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"%s: Wake up release failed\n", __func__);
}
#endif
/**
* hal_write_address_32_mb - write a value to a register
@@ -83,6 +160,7 @@ static inline void hal_write_address_32_mb(struct hal_soc *hal_soc,
hal_write32_mb(hal_soc, offset, value);
}
#ifndef QCA_WIFI_QCA6390
static inline uint32_t hal_read32_mb(struct hal_soc *hal_soc, uint32_t offset)
{
uint32_t ret;
@@ -100,6 +178,37 @@ static inline uint32_t hal_read32_mb(struct hal_soc *hal_soc, uint32_t offset)
return ret;
}
#else
static inline uint32_t hal_read32_mb(struct hal_soc *hal_soc, uint32_t offset)
{
uint32_t ret;
if ((offset > MAPPED_REF_OFF) &&
hal_force_wake_request(hal_soc)) {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"%s: Wake up request failed\n", __func__);
return -EINVAL;
}
if (!hal_soc->use_register_windowing ||
offset < MAX_UNWINDOWED_ADDRESS) {
return qdf_ioread32(hal_soc->dev_base_addr + offset);
}
qdf_spin_lock_irqsave(&hal_soc->register_access_lock);
hal_select_window(hal_soc, offset);
ret = qdf_ioread32(hal_soc->dev_base_addr + WINDOW_START +
(offset & WINDOW_RANGE_MASK));
qdf_spin_unlock_irqrestore(&hal_soc->register_access_lock);
if ((offset > MAPPED_REF_OFF) &&
hal_force_wake_release(hal_soc))
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"%s: Wake up release failed\n", __func__);
return ret;
}
#endif
#include "hif_io32.h"