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iwlwifi: replacing wording restricted to nic access in iwl-io

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This patch replaces wording 'restricted' with more appropriate 'nic access'
NIC access is grabbed to prevent NIC entering power save mode
General cleanup of iwl-io.h

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Tomas Winkler
2007-10-25 17:15:37 +08:00
committed by David S. Miller
parent af7cca2a44
commit ac17a947a4
5 changed files with 229 additions and 231 deletions
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146
drivers/net/wireless/iwlwifi/iwl-io.h
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@@ -42,15 +42,14 @@
* check or debug information is printed when that function is called.
*
* A double __ prefix before an access function means that state is checked
* (in the case of *restricted calls) and the current line number is printed
* in addition to any other debug output.
* and the current line number is printed in addition to any other debug output.
*
* The non-prefixed name is the #define that maps the caller into a
* #define that provides the caller's __LINE__ to the double prefix version.
*
* If you wish to call the function without any debug or state checking,
* you should use the single _ prefix version (as is used by dependent IO
* routines, for example _iwl_read_restricted calls the non-check version of
* routines, for example _iwl_read_direct32 calls the non-check version of
* _iwl_read32.)
*
* These declarations are *extremely* useful in quickly isolating code deltas
@@ -65,8 +64,7 @@
static inline void __iwl_write32(const char *f, u32 l, struct iwl_priv *iwl,
u32 ofs, u32 val)
{
IWL_DEBUG_IO("write_direct32(0x%08X, 0x%08X) - %s %d\n",
(u32) (ofs), (u32) (val), f, l);
IWL_DEBUG_IO("write32(0x%08X, 0x%08X) - %s %d\n", ofs, val, f, l);
_iwl_write32(iwl, ofs, val);
}
#define iwl_write32(iwl, ofs, val) \
@@ -106,16 +104,16 @@ static inline int __iwl_poll_bit(const char *f, u32 l,
struct iwl_priv *priv, u32 addr,
u32 bits, u32 mask, int timeout)
{
int rc = _iwl_poll_bit(priv, addr, bits, mask, timeout);
if (unlikely(rc == -ETIMEDOUT))
int ret = _iwl_poll_bit(priv, addr, bits, mask, timeout);
if (unlikely(ret == -ETIMEDOUT))
IWL_DEBUG_IO
("poll_bit(0x%08X, 0x%08X, 0x%08X) - timedout - %s %d\n",
addr, bits, mask, f, l);
else
IWL_DEBUG_IO
("poll_bit(0x%08X, 0x%08X, 0x%08X) = 0x%08X - %s %d\n",
addr, bits, mask, rc, f, l);
return rc;
addr, bits, mask, ret, f, l);
return ret;
}
#define iwl_poll_bit(iwl, addr, bits, mask, timeout) \
__iwl_poll_bit(__FILE__, __LINE__, iwl, addr, bits, mask, timeout)
@@ -157,9 +155,9 @@ static inline void __iwl_clear_bit(const char *f, u32 l,
#define iwl_clear_bit(p, r, m) _iwl_clear_bit(p, r, m)
#endif
static inline int _iwl_grab_restricted_access(struct iwl_priv *priv)
static inline int _iwl_grab_nic_access(struct iwl_priv *priv)
{
int rc;
int ret;
u32 gp_ctl;
#ifdef CONFIG_IWLWIFI_DEBUG
@@ -184,11 +182,11 @@ static inline int _iwl_grab_restricted_access(struct iwl_priv *priv)
/* this bit wakes up the NIC */
_iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
rc = _iwl_poll_bit(priv, CSR_GP_CNTRL,
ret = _iwl_poll_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN,
(CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 50);
if (rc < 0) {
if (ret < 0) {
IWL_ERROR("MAC is in deep sleep!\n");
return -EIO;
}
@@ -200,25 +198,24 @@ static inline int _iwl_grab_restricted_access(struct iwl_priv *priv)
}
#ifdef CONFIG_IWLWIFI_DEBUG
static inline int __iwl_grab_restricted_access(const char *f, u32 l,
static inline int __iwl_grab_nic_access(const char *f, u32 l,
struct iwl_priv *priv)
{
if (atomic_read(&priv->restrict_refcnt))
IWL_DEBUG_INFO("Grabbing access while already held at "
"line %d.\n", l);
IWL_DEBUG_IO("grabbing restricted access - %s %d\n", f, l);
return _iwl_grab_restricted_access(priv);
IWL_DEBUG_IO("grabbing nic access - %s %d\n", f, l);
return _iwl_grab_nic_access(priv);
}
#define iwl_grab_restricted_access(priv) \
__iwl_grab_restricted_access(__FILE__, __LINE__, priv)
#define iwl_grab_nic_access(priv) \
__iwl_grab_nic_access(__FILE__, __LINE__, priv)
#else
#define iwl_grab_restricted_access(priv) \
_iwl_grab_restricted_access(priv)
#define iwl_grab_nic_access(priv) \
_iwl_grab_nic_access(priv)
#endif
static inline void _iwl_release_restricted_access(struct iwl_priv *priv)
static inline void _iwl_release_nic_access(struct iwl_priv *priv)
{
#ifdef CONFIG_IWLWIFI_DEBUG
if (atomic_dec_and_test(&priv->restrict_refcnt))
@@ -227,80 +224,80 @@ static inline void _iwl_release_restricted_access(struct iwl_priv *priv)
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
}
#ifdef CONFIG_IWLWIFI_DEBUG
static inline void __iwl_release_restricted_access(const char *f, u32 l,
struct iwl_priv *priv)
static inline void __iwl_release_nic_access(const char *f, u32 l,
struct iwl_priv *priv)
{
if (atomic_read(&priv->restrict_refcnt) <= 0)
IWL_ERROR("Release unheld restricted access at line %d.\n", l);
IWL_ERROR("Release unheld nic access at line %d.\n", l);
IWL_DEBUG_IO("releasing restricted access - %s %d\n", f, l);
_iwl_release_restricted_access(priv);
IWL_DEBUG_IO("releasing nic access - %s %d\n", f, l);
_iwl_release_nic_access(priv);
}
#define iwl_release_restricted_access(priv) \
__iwl_release_restricted_access(__FILE__, __LINE__, priv)
#define iwl_release_nic_access(priv) \
__iwl_release_nic_access(__FILE__, __LINE__, priv)
#else
#define iwl_release_restricted_access(priv) \
_iwl_release_restricted_access(priv)
#define iwl_release_nic_access(priv) \
_iwl_release_nic_access(priv)
#endif
static inline u32 _iwl_read_restricted(struct iwl_priv *priv, u32 reg)
static inline u32 _iwl_read_direct32(struct iwl_priv *priv, u32 reg)
{
return _iwl_read32(priv, reg);
}
#ifdef CONFIG_IWLWIFI_DEBUG
static inline u32 __iwl_read_restricted(const char *f, u32 l,
static inline u32 __iwl_read_direct32(const char *f, u32 l,
struct iwl_priv *priv, u32 reg)
{
u32 value = _iwl_read_restricted(priv, reg);
u32 value = _iwl_read_direct32(priv, reg);
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Unrestricted access from %s %d\n", f, l);
IWL_DEBUG_IO("read_restricted(0x%4X) = 0x%08x - %s %d \n", reg, value,
IWL_ERROR("Nic access not held from %s %d\n", f, l);
IWL_DEBUG_IO("read_direct32(0x%4X) = 0x%08x - %s %d \n", reg, value,
f, l);
return value;
}
#define iwl_read_restricted(priv, reg) \
__iwl_read_restricted(__FILE__, __LINE__, priv, reg)
#define iwl_read_direct32(priv, reg) \
__iwl_read_direct32(__FILE__, __LINE__, priv, reg)
#else
#define iwl_read_restricted _iwl_read_restricted
#define iwl_read_direct32 _iwl_read_direct32
#endif
static inline void _iwl_write_restricted(struct iwl_priv *priv,
static inline void _iwl_write_direct32(struct iwl_priv *priv,
u32 reg, u32 value)
{
_iwl_write32(priv, reg, value);
}
#ifdef CONFIG_IWLWIFI_DEBUG
static void __iwl_write_restricted(u32 line,
static void __iwl_write_direct32(u32 line,
struct iwl_priv *priv, u32 reg, u32 value)
{
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Unrestricted access from line %d\n", line);
_iwl_write_restricted(priv, reg, value);
IWL_ERROR("Nic access not held from line %d\n", line);
_iwl_write_direct32(priv, reg, value);
}
#define iwl_write_restricted(priv, reg, value) \
__iwl_write_restricted(__LINE__, priv, reg, value)
#define iwl_write_direct32(priv, reg, value) \
__iwl_write_direct32(__LINE__, priv, reg, value)
#else
#define iwl_write_restricted _iwl_write_restricted
#define iwl_write_direct32 _iwl_write_direct32
#endif
static inline void iwl_write_buffer_restricted(struct iwl_priv *priv,
static inline void iwl_write_reg_buf(struct iwl_priv *priv,
u32 reg, u32 len, u32 *values)
{
u32 count = sizeof(u32);
if ((priv != NULL) && (values != NULL)) {
for (; 0 < len; len -= count, reg += count, values++)
_iwl_write_restricted(priv, reg, *values);
_iwl_write_direct32(priv, reg, *values);
}
}
static inline int _iwl_poll_restricted_bit(struct iwl_priv *priv,
static inline int _iwl_poll_direct_bit(struct iwl_priv *priv,
u32 addr, u32 mask, int timeout)
{
int i = 0;
do {
if ((_iwl_read_restricted(priv, addr) & mask) == mask)
if ((_iwl_read_direct32(priv, addr) & mask) == mask)
return i;
mdelay(10);
i += 10;
@@ -310,36 +307,36 @@ static inline int _iwl_poll_restricted_bit(struct iwl_priv *priv,
}
#ifdef CONFIG_IWLWIFI_DEBUG
static inline int __iwl_poll_restricted_bit(const char *f, u32 l,
static inline int __iwl_poll_direct_bit(const char *f, u32 l,
struct iwl_priv *priv,
u32 addr, u32 mask, int timeout)
{
int rc = _iwl_poll_restricted_bit(priv, addr, mask, timeout);
int ret = _iwl_poll_direct_bit(priv, addr, mask, timeout);
if (unlikely(rc == -ETIMEDOUT))
IWL_DEBUG_IO("poll_restricted_bit(0x%08X, 0x%08X) - "
if (unlikely(ret == -ETIMEDOUT))
IWL_DEBUG_IO("poll_direct_bit(0x%08X, 0x%08X) - "
"timedout - %s %d\n", addr, mask, f, l);
else
IWL_DEBUG_IO("poll_restricted_bit(0x%08X, 0x%08X) = 0x%08X "
"- %s %d\n", addr, mask, rc, f, l);
return rc;
IWL_DEBUG_IO("poll_direct_bit(0x%08X, 0x%08X) = 0x%08X "
"- %s %d\n", addr, mask, ret, f, l);
return ret;
}
#define iwl_poll_restricted_bit(iwl, addr, mask, timeout) \
__iwl_poll_restricted_bit(__FILE__, __LINE__, iwl, addr, mask, timeout)
#define iwl_poll_direct_bit(iwl, addr, mask, timeout) \
__iwl_poll_direct_bit(__FILE__, __LINE__, iwl, addr, mask, timeout)
#else
#define iwl_poll_restricted_bit _iwl_poll_restricted_bit
#define iwl_poll_direct_bit _iwl_poll_direct_bit
#endif
static inline u32 _iwl_read_prph(struct iwl_priv *priv, u32 reg)
{
_iwl_write_restricted(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24));
return _iwl_read_restricted(priv, HBUS_TARG_PRPH_RDAT);
_iwl_write_direct32(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24));
return _iwl_read_direct32(priv, HBUS_TARG_PRPH_RDAT);
}
#ifdef CONFIG_IWLWIFI_DEBUG
static inline u32 __iwl_read_prph(u32 line, struct iwl_priv *priv, u32 reg)
{
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Unrestricted access from line %d\n", line);
IWL_ERROR("Nic access not held from line %d\n", line);
return _iwl_read_prph(priv, reg);
}
@@ -352,16 +349,16 @@ static inline u32 __iwl_read_prph(u32 line, struct iwl_priv *priv, u32 reg)
static inline void _iwl_write_prph(struct iwl_priv *priv,
u32 addr, u32 val)
{
_iwl_write_restricted(priv, HBUS_TARG_PRPH_WADDR,
_iwl_write_direct32(priv, HBUS_TARG_PRPH_WADDR,
((addr & 0x0000FFFF) | (3 << 24)));
_iwl_write_restricted(priv, HBUS_TARG_PRPH_WDAT, val);
_iwl_write_direct32(priv, HBUS_TARG_PRPH_WDAT, val);
}
#ifdef CONFIG_IWLWIFI_DEBUG
static inline void __iwl_write_prph(u32 line, struct iwl_priv *priv,
u32 addr, u32 val)
{
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Unrestricted access from line %d\n", line);
IWL_ERROR("Nic access from line %d\n", line);
_iwl_write_prph(priv, addr, val);
}
@@ -378,7 +375,8 @@ static inline void __iwl_set_bits_prph(u32 line, struct iwl_priv *priv,
u32 reg, u32 mask)
{
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Unrestricted access from line %d\n", line);
IWL_ERROR("Nic access not held from line %d\n", line);
_iwl_set_bits_prph(priv, reg, mask);
}
#define iwl_set_bits_prph(priv, reg, mask) \
@@ -395,7 +393,7 @@ static inline void __iwl_set_bits_mask_prph(u32 line,
struct iwl_priv *priv, u32 reg, u32 bits, u32 mask)
{
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Unrestricted access from line %d\n", line);
IWL_ERROR("Nic access not held from line %d\n", line);
_iwl_set_bits_mask_prph(priv, reg, bits, mask);
}
#define iwl_set_bits_mask_prph(priv, reg, bits, mask) \
@@ -413,21 +411,21 @@ static inline void iwl_clear_bits_prph(struct iwl_priv
static inline u32 iwl_read_targ_mem(struct iwl_priv *priv, u32 addr)
{
iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, addr);
return iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, addr);
return iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
}
static inline void iwl_write_targ_mem(struct iwl_priv *priv, u32 addr, u32 val)
{
iwl_write_restricted(priv, HBUS_TARG_MEM_WADDR, addr);
iwl_write_restricted(priv, HBUS_TARG_MEM_WDAT, val);
iwl_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr);
iwl_write_direct32(priv, HBUS_TARG_MEM_WDAT, val);
}
static inline void iwl_write_targ_mem_buf(struct iwl_priv *priv, u32 addr,
u32 len, u32 *values)
{
iwl_write_restricted(priv, HBUS_TARG_MEM_WADDR, addr);
iwl_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr);
for (; 0 < len; len -= sizeof(u32), values++)
iwl_write_restricted(priv, HBUS_TARG_MEM_WDAT, *values);
iwl_write_direct32(priv, HBUS_TARG_MEM_WDAT, *values);
}
#endif