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path: root/drivers/net/wireless/iwlwifi/iwl-trans.h
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-trans.h')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-trans.h164
1 files changed, 145 insertions, 19 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index b76532e238c1..8c7bec6b9a0b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -5,7 +5,7 @@
*
* GPL LICENSE SUMMARY
*
- * Copyright(c) 2007 - 2012 Intel Corporation. All rights reserved.
+ * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
@@ -30,7 +30,7 @@
*
* BSD LICENSE
*
- * Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved.
+ * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -65,6 +65,7 @@
#include <linux/ieee80211.h>
#include <linux/mm.h> /* for page_address */
+#include <linux/lockdep.h>
#include "iwl-debug.h"
#include "iwl-config.h"
@@ -193,11 +194,11 @@ struct iwl_rx_packet {
* @CMD_ON_DEMAND: This command is sent by the test mode pipe.
*/
enum CMD_MODE {
- CMD_SYNC = 0,
- CMD_ASYNC = BIT(0),
- CMD_WANT_SKB = BIT(1),
- CMD_WANT_HCMD = BIT(2),
- CMD_ON_DEMAND = BIT(3),
+ CMD_SYNC = 0,
+ CMD_ASYNC = BIT(0),
+ CMD_WANT_SKB = BIT(1),
+ CMD_WANT_HCMD = BIT(2),
+ CMD_ON_DEMAND = BIT(3),
};
#define DEF_CMD_PAYLOAD_SIZE 320
@@ -274,6 +275,7 @@ struct iwl_rx_cmd_buffer {
struct page *_page;
int _offset;
bool _page_stolen;
+ u32 _rx_page_order;
unsigned int truesize;
};
@@ -294,6 +296,11 @@ static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r)
return r->_page;
}
+static inline void iwl_free_rxb(struct iwl_rx_cmd_buffer *r)
+{
+ __free_pages(r->_page, r->_rx_page_order);
+}
+
#define MAX_NO_RECLAIM_CMDS 6
#define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
@@ -308,6 +315,16 @@ static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r)
#define IWL_FRAME_LIMIT 64
/**
+ * enum iwl_wowlan_status - WoWLAN image/device status
+ * @IWL_D3_STATUS_ALIVE: firmware is still running after resume
+ * @IWL_D3_STATUS_RESET: device was reset while suspended
+ */
+enum iwl_d3_status {
+ IWL_D3_STATUS_ALIVE,
+ IWL_D3_STATUS_RESET,
+};
+
+/**
* struct iwl_trans_config - transport configuration
*
* @op_mode: pointer to the upper layer.
@@ -321,6 +338,8 @@ static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r)
* @n_no_reclaim_cmds: # of commands in list
* @rx_buf_size_8k: 8 kB RX buffer size needed for A-MSDUs,
* if unset 4k will be the RX buffer size
+ * @bc_table_dword: set to true if the BC table expects the byte count to be
+ * in DWORD (as opposed to bytes)
* @queue_watchdog_timeout: time (in ms) after which queues
* are considered stuck and will trigger device restart
* @command_names: array of command names, must be 256 entries
@@ -335,6 +354,7 @@ struct iwl_trans_config {
int n_no_reclaim_cmds;
bool rx_buf_size_8k;
+ bool bc_table_dword;
unsigned int queue_watchdog_timeout;
const char **command_names;
};
@@ -360,9 +380,12 @@ struct iwl_trans;
* May sleep
* @stop_device:stops the whole device (embedded CPU put to reset)
* May sleep
- * @wowlan_suspend: put the device into the correct mode for WoWLAN during
+ * @d3_suspend: put the device into the correct mode for WoWLAN during
* suspend. This is optional, if not implemented WoWLAN will not be
* supported. This callback may sleep.
+ * @d3_resume: resume the device after WoWLAN, enabling the opmode to
+ * talk to the WoWLAN image to get its status. This is optional, if not
+ * implemented WoWLAN will not be supported. This callback may sleep.
* @send_cmd:send a host command. Must return -ERFKILL if RFkill is asserted.
* If RFkill is asserted in the middle of a SYNC host command, it must
* return -ERFKILL straight away.
@@ -387,20 +410,31 @@ struct iwl_trans;
* @read32: read a u32 register at offset ofs from the BAR
* @read_prph: read a DWORD from a periphery register
* @write_prph: write a DWORD to a periphery register
+ * @read_mem: read device's SRAM in DWORD
+ * @write_mem: write device's SRAM in DWORD. If %buf is %NULL, then the memory
+ * will be zeroed.
* @configure: configure parameters required by the transport layer from
* the op_mode. May be called several times before start_fw, can't be
* called after that.
* @set_pmi: set the power pmi state
+ * @grab_nic_access: wake the NIC to be able to access non-HBUS regs.
+ * Sleeping is not allowed between grab_nic_access and
+ * release_nic_access.
+ * @release_nic_access: let the NIC go to sleep. The "flags" parameter
+ * must be the same one that was sent before to the grab_nic_access.
+ * @set_bits_mask - set SRAM register according to value and mask.
*/
struct iwl_trans_ops {
int (*start_hw)(struct iwl_trans *iwl_trans);
void (*stop_hw)(struct iwl_trans *iwl_trans, bool op_mode_leaving);
- int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw);
+ int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw,
+ bool run_in_rfkill);
void (*fw_alive)(struct iwl_trans *trans, u32 scd_addr);
void (*stop_device)(struct iwl_trans *trans);
- void (*wowlan_suspend)(struct iwl_trans *trans);
+ void (*d3_suspend)(struct iwl_trans *trans);
+ int (*d3_resume)(struct iwl_trans *trans, enum iwl_d3_status *status);
int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
@@ -424,9 +458,19 @@ struct iwl_trans_ops {
u32 (*read32)(struct iwl_trans *trans, u32 ofs);
u32 (*read_prph)(struct iwl_trans *trans, u32 ofs);
void (*write_prph)(struct iwl_trans *trans, u32 ofs, u32 val);
+ int (*read_mem)(struct iwl_trans *trans, u32 addr,
+ void *buf, int dwords);
+ int (*write_mem)(struct iwl_trans *trans, u32 addr,
+ void *buf, int dwords);
void (*configure)(struct iwl_trans *trans,
const struct iwl_trans_config *trans_cfg);
void (*set_pmi)(struct iwl_trans *trans, bool state);
+ bool (*grab_nic_access)(struct iwl_trans *trans, bool silent,
+ unsigned long *flags);
+ void (*release_nic_access)(struct iwl_trans *trans,
+ unsigned long *flags);
+ void (*set_bits_mask)(struct iwl_trans *trans, u32 reg, u32 mask,
+ u32 value);
};
/**
@@ -446,7 +490,6 @@ enum iwl_trans_state {
* @ops - pointer to iwl_trans_ops
* @op_mode - pointer to the op_mode
* @cfg - pointer to the configuration
- * @reg_lock - protect hw register access
* @dev - pointer to struct device * that represents the device
* @hw_id: a u32 with the ID of the device / subdevice.
* Set during transport allocation.
@@ -467,7 +510,6 @@ struct iwl_trans {
struct iwl_op_mode *op_mode;
const struct iwl_cfg *cfg;
enum iwl_trans_state state;
- spinlock_t reg_lock;
struct device *dev;
u32 hw_rev;
@@ -485,6 +527,10 @@ struct iwl_trans {
struct dentry *dbgfs_dir;
+#ifdef CONFIG_LOCKDEP
+ struct lockdep_map sync_cmd_lockdep_map;
+#endif
+
/* pointer to trans specific struct */
/*Ensure that this pointer will always be aligned to sizeof pointer */
char trans_specific[0] __aligned(sizeof(void *));
@@ -528,13 +574,14 @@ static inline void iwl_trans_fw_alive(struct iwl_trans *trans, u32 scd_addr)
}
static inline int iwl_trans_start_fw(struct iwl_trans *trans,
- const struct fw_img *fw)
+ const struct fw_img *fw,
+ bool run_in_rfkill)
{
might_sleep();
WARN_ON_ONCE(!trans->rx_mpdu_cmd);
- return trans->ops->start_fw(trans, fw);
+ return trans->ops->start_fw(trans, fw, run_in_rfkill);
}
static inline void iwl_trans_stop_device(struct iwl_trans *trans)
@@ -546,19 +593,36 @@ static inline void iwl_trans_stop_device(struct iwl_trans *trans)
trans->state = IWL_TRANS_NO_FW;
}
-static inline void iwl_trans_wowlan_suspend(struct iwl_trans *trans)
+static inline void iwl_trans_d3_suspend(struct iwl_trans *trans)
{
might_sleep();
- trans->ops->wowlan_suspend(trans);
+ trans->ops->d3_suspend(trans);
+}
+
+static inline int iwl_trans_d3_resume(struct iwl_trans *trans,
+ enum iwl_d3_status *status)
+{
+ might_sleep();
+ return trans->ops->d3_resume(trans, status);
}
static inline int iwl_trans_send_cmd(struct iwl_trans *trans,
- struct iwl_host_cmd *cmd)
+ struct iwl_host_cmd *cmd)
{
+ int ret;
+
WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
"%s bad state = %d", __func__, trans->state);
- return trans->ops->send_cmd(trans, cmd);
+ if (!(cmd->flags & CMD_ASYNC))
+ lock_map_acquire_read(&trans->sync_cmd_lockdep_map);
+
+ ret = trans->ops->send_cmd(trans, cmd);
+
+ if (!(cmd->flags & CMD_ASYNC))
+ lock_map_release(&trans->sync_cmd_lockdep_map);
+
+ return ret;
}
static inline struct iwl_device_cmd *
@@ -636,7 +700,7 @@ static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
}
static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,
- struct dentry *dir)
+ struct dentry *dir)
{
return trans->ops->dbgfs_register(trans, dir);
}
@@ -679,15 +743,77 @@ static inline void iwl_trans_write_prph(struct iwl_trans *trans, u32 ofs,
return trans->ops->write_prph(trans, ofs, val);
}
+static inline int iwl_trans_read_mem(struct iwl_trans *trans, u32 addr,
+ void *buf, int dwords)
+{
+ return trans->ops->read_mem(trans, addr, buf, dwords);
+}
+
+#define iwl_trans_read_mem_bytes(trans, addr, buf, bufsize) \
+ do { \
+ if (__builtin_constant_p(bufsize)) \
+ BUILD_BUG_ON((bufsize) % sizeof(u32)); \
+ iwl_trans_read_mem(trans, addr, buf, (bufsize) / sizeof(u32));\
+ } while (0)
+
+static inline u32 iwl_trans_read_mem32(struct iwl_trans *trans, u32 addr)
+{
+ u32 value;
+
+ if (WARN_ON(iwl_trans_read_mem(trans, addr, &value, 1)))
+ return 0xa5a5a5a5;
+
+ return value;
+}
+
+static inline int iwl_trans_write_mem(struct iwl_trans *trans, u32 addr,
+ void *buf, int dwords)
+{
+ return trans->ops->write_mem(trans, addr, buf, dwords);
+}
+
+static inline u32 iwl_trans_write_mem32(struct iwl_trans *trans, u32 addr,
+ u32 val)
+{
+ return iwl_trans_write_mem(trans, addr, &val, 1);
+}
+
static inline void iwl_trans_set_pmi(struct iwl_trans *trans, bool state)
{
trans->ops->set_pmi(trans, state);
}
+static inline void
+iwl_trans_set_bits_mask(struct iwl_trans *trans, u32 reg, u32 mask, u32 value)
+{
+ trans->ops->set_bits_mask(trans, reg, mask, value);
+}
+
+#define iwl_trans_grab_nic_access(trans, silent, flags) \
+ __cond_lock(nic_access, \
+ likely((trans)->ops->grab_nic_access(trans, silent, flags)))
+
+static inline void __releases(nic_access)
+iwl_trans_release_nic_access(struct iwl_trans *trans, unsigned long *flags)
+{
+ trans->ops->release_nic_access(trans, flags);
+ __release(nic_access);
+}
+
/*****************************************************
* driver (transport) register/unregister functions
******************************************************/
int __must_check iwl_pci_register_driver(void);
void iwl_pci_unregister_driver(void);
+static inline void trans_lockdep_init(struct iwl_trans *trans)
+{
+#ifdef CONFIG_LOCKDEP
+ static struct lock_class_key __key;
+
+ lockdep_init_map(&trans->sync_cmd_lockdep_map, "sync_cmd_lockdep_map",
+ &__key, 0);
+#endif
+}
+
#endif /* __iwl_trans_h__ */