/******************************************************************************
*
- * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
+ * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
*
* Portions of this file are derived from the ipw3945 project, as well
* as portions of the ieee80211 subsystem header files.
* file called LICENSE.
*
* Contact Information:
- * James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ * Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#include <linux/ctype.h>
-/*
- * The structures defined by the hardware/uCode interface
- * have bit-wise operations. For each bit-field there is
- * a data symbol in the structure, the start bit position
- * and the length of the bit-field.
- *
- * iwl_get_bits and iwl_set_bits will return or set the
- * appropriate bits on a 32-bit value.
- *
- * IWL_GET_BITS and IWL_SET_BITS use symbol expansion to
- * expand out to the appropriate call to iwl_get_bits
- * and iwl_set_bits without having to reference all of the
- * numerical constants and defines provided in the hardware
- * definition
- */
-
-/**
- * iwl_get_bits - Extract a hardware bit-field value
- * @src: source hardware value (__le32)
- * @pos: bit-position (0-based) of first bit of value
- * @len: length of bit-field
- *
- * iwl_get_bits will return the bit-field in cpu endian ordering.
- *
- * NOTE: If used from IWL_GET_BITS then pos and len are compile-constants and
- * will collapse to minimal code by the compiler.
- */
-static inline u32 iwl_get_bits(__le32 src, u8 pos, u8 len)
-{
- u32 tmp = le32_to_cpu(src);
-
- tmp >>= pos;
- tmp &= (1UL << len) - 1;
- return tmp;
-}
-
-/**
- * iwl_set_bits - Set a hardware bit-field value
- * @dst: Address of __le32 hardware value
- * @pos: bit-position (0-based) of first bit of value
- * @len: length of bit-field
- * @val: cpu endian value to encode into the bit-field
- *
- * iwl_set_bits will encode val into dst, masked to be len bits long at bit
- * position pos.
- *
- * NOTE: If used IWL_SET_BITS pos and len will be compile-constants and
- * will collapse to minimal code by the compiler.
- */
-static inline void iwl_set_bits(__le32 *dst, u8 pos, u8 len, int val)
-{
- u32 tmp = le32_to_cpu(*dst);
-
- tmp &= ~(((1UL << len) - 1) << pos);
- tmp |= (val & ((1UL << len) - 1)) << pos;
- *dst = cpu_to_le32(tmp);
-}
-
-static inline void iwl_set_bits16(__le16 *dst, u8 pos, u8 len, int val)
-{
- u16 tmp = le16_to_cpu(*dst);
-
- tmp &= ~((1UL << (pos + len)) - (1UL << pos));
- tmp |= (val & ((1UL << len) - 1)) << pos;
- *dst = cpu_to_le16(tmp);
-}
-
-/*
- * The bit-field definitions in iwl-xxxx-hw.h are in the form of:
- *
- * struct example {
- * __le32 val1;
- * #define IWL_name_POS 8
- * #define IWL_name_LEN 4
- * #define IWL_name_SYM val1
- * };
- *
- * The IWL_SET_BITS and IWL_GET_BITS macros are provided to allow the driver
- * to call:
- *
- * struct example bar;
- * u32 val = IWL_GET_BITS(bar, name);
- * val = val * 2;
- * IWL_SET_BITS(bar, name, val);
- *
- * All cpu / host ordering, masking, and shifts are performed by the macros
- * and iwl_{get,set}_bits.
- *
- */
-#define IWL_SET_BITS(s, sym, v) \
- iwl_set_bits(&(s).IWL_ ## sym ## _SYM, IWL_ ## sym ## _POS, \
- IWL_ ## sym ## _LEN, (v))
-
-#define IWL_SET_BITS16(s, sym, v) \
- iwl_set_bits16(&(s).IWL_ ## sym ## _SYM, IWL_ ## sym ## _POS, \
- IWL_ ## sym ## _LEN, (v))
-
-#define IWL_GET_BITS(s, sym) \
- iwl_get_bits((s).IWL_ ## sym ## _SYM, IWL_ ## sym ## _POS, \
- IWL_ ## sym ## _LEN)
+#define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
-#define KELVIN_TO_CELSIUS(x) ((x)-273)
-#define CELSIUS_TO_KELVIN(x) ((x)+273)
-
-#define IEEE80211_CHAN_W_RADAR_DETECT 0x00000010
-
static inline struct ieee80211_conf *ieee80211_get_hw_conf(
struct ieee80211_hw *hw)
{
return &hw->conf;
}
-#define QOS_CONTROL_LEN 2
-
-
-static inline int ieee80211_is_management(u16 fc)
-{
- return (fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT;
-}
-
-static inline int ieee80211_is_control(u16 fc)
-{
- return (fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL;
-}
-
-static inline int ieee80211_is_data(u16 fc)
-{
- return (fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA;
-}
-
-static inline int ieee80211_is_back_request(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BACK_REQ);
-}
-
-static inline int ieee80211_is_probe_response(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP);
-}
-
-static inline int ieee80211_is_probe_request(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_REQ);
-}
-
-static inline int ieee80211_is_beacon(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON);
-}
-
-static inline int ieee80211_is_atim(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ATIM);
-}
-
-static inline int ieee80211_is_assoc_request(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ);
-}
-
-static inline int ieee80211_is_assoc_response(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_RESP);
-}
-
-static inline int ieee80211_is_auth(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ);
-}
-
-static inline int ieee80211_is_deauth(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ);
-}
-
-static inline int ieee80211_is_disassoc(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ);
-}
-
-static inline int ieee80211_is_reassoc_request(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ);
-}
-
-static inline int ieee80211_is_reassoc_response(u16 fc)
-{
- return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_RESP);
-}
-
static inline int iwl_check_bits(unsigned long field, unsigned long mask)
{
return ((field & mask) == mask) ? 1 : 0;
return end + (MAX_JIFFY_OFFSET - start) + 1;
}
-static inline u8 iwl_get_dma_hi_address(dma_addr_t addr)
+/**
+ * iwl_queue_inc_wrap - increment queue index, wrap back to beginning
+ * @index -- current index
+ * @n_bd -- total number of entries in queue (must be power of 2)
+ */
+static inline int iwl_queue_inc_wrap(int index, int n_bd)
{
- return sizeof(addr) > sizeof(u32) ? (addr >> 16) >> 16 : 0;
+ return ++index & (n_bd - 1);
+}
+
+/**
+ * iwl_queue_dec_wrap - decrement queue index, wrap back to end
+ * @index -- current index
+ * @n_bd -- total number of entries in queue (must be power of 2)
+ */
+static inline int iwl_queue_dec_wrap(int index, int n_bd)
+{
+ return --index & (n_bd - 1);
}
/* TODO: Move fw_desc functions to iwl-pci.ko */
return (desc->v_addr != NULL) ? 0 : -ENOMEM;
}
+/*
+ * we have 8 bits used like this:
+ *
+ * 7 6 5 4 3 2 1 0
+ * | | | | | | | |
+ * | | | | | | +-+-------- AC queue (0-3)
+ * | | | | | |
+ * | +-+-+-+-+------------ HW A-MPDU queue
+ * |
+ * +---------------------- indicates agg queue
+ */
+static inline u8 iwl_virtual_agg_queue_num(u8 ac, u8 hwq)
+{
+ BUG_ON(ac > 3); /* only have 2 bits */
+ BUG_ON(hwq > 31); /* only have 5 bits */
+
+ return 0x80 | (hwq << 2) | ac;
+}
+
+static inline void iwl_wake_queue(struct iwl_priv *priv, u8 queue)
+{
+ u8 ac = queue;
+ u8 hwq = queue;
+
+ if (queue & 0x80) {
+ ac = queue & 3;
+ hwq = (queue >> 2) & 0x1f;
+ }
+
+ if (test_and_clear_bit(hwq, priv->queue_stopped))
+ if (atomic_dec_return(&priv->queue_stop_count[ac]) <= 0)
+ ieee80211_wake_queue(priv->hw, ac);
+}
+
+static inline void iwl_stop_queue(struct iwl_priv *priv, u8 queue)
+{
+ u8 ac = queue;
+ u8 hwq = queue;
+
+ if (queue & 0x80) {
+ ac = queue & 3;
+ hwq = (queue >> 2) & 0x1f;
+ }
+
+ if (!test_and_set_bit(hwq, priv->queue_stopped))
+ if (atomic_inc_return(&priv->queue_stop_count[ac]) > 0)
+ ieee80211_stop_queue(priv->hw, ac);
+}
+
+#define ieee80211_stop_queue DO_NOT_USE_ieee80211_stop_queue
+#define ieee80211_wake_queue DO_NOT_USE_ieee80211_wake_queue
+
#endif /* __iwl_helpers_h__ */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff