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wl12xx: cmd and acx interface rework
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Rework cmd and acx interfaces, it was just too confusing earlier. Now
all commands need to contain all the needed headers, either just cmd
headers or both cmd and acx headers. This accomplish to remove the
extra copy done for each command. The interfaces are now properly
documented as well.

Also try to make all commands safe for DMA transfers. I might have missed
some, but most of them should be fixed now.

And this is not all! As a free bonus you will also get some cosmetic
cleanups and code reorganisation. Order today!

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Kalle Valo authored and John W. Linville committed Jul 10, 2009
1 parent c4f9f16 commit ff25839
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Showing 9 changed files with 896 additions and 591 deletions.
690 changes: 420 additions & 270 deletions drivers/net/wireless/wl12xx/acx.c
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126 changes: 13 additions & 113 deletions drivers/net/wireless/wl12xx/acx.h
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Original file line number Diff line number Diff line change
Expand Up @@ -26,10 +26,16 @@
#define __WL12XX_ACX_H__

#include "wl12xx.h"
#include "cmd.h"

/* Target's information element */
struct acx_header {
struct wl12xx_cmd_header cmd;

/* acx (or information element) header */
u16 id;

/* payload length (not including headers */
u16 len;
};

Expand Down Expand Up @@ -107,25 +113,6 @@ struct acx_sleep_auth {
u8 padding[3];
} __attribute__ ((packed));

#define TIM_ELE_ID 5
#define PARTIAL_VBM_MAX 251

struct tim {
u8 identity;
u8 length;
u8 dtim_count;
u8 dtim_period;
u8 bitmap_ctrl;
u8 pvb_field[PARTIAL_VBM_MAX]; /* Partial Virtual Bitmap */
} __attribute__ ((packed));

/* Virtual Bit Map update */
struct vbm_update_request {
__le16 len;
u8 padding[2];
struct tim tim;
} __attribute__ ((packed));

enum {
HOSTIF_PCI_MASTER_HOST_INDIRECT,
HOSTIF_PCI_MASTER_HOST_DIRECT,
Expand Down Expand Up @@ -202,7 +189,7 @@ struct acx_data_path_params_resp {
#define RX_MSDU_LIFETIME_MAX 0xFFFFFFFF
#define RX_MSDU_LIFETIME_DEF 512000

struct rx_msdu_lifetime {
struct acx_rx_msdu_lifetime {
struct acx_header header;

/*
Expand Down Expand Up @@ -368,7 +355,7 @@ struct acx_slot {
#define ADDRESS_GROUP_MAX (8)
#define ADDRESS_GROUP_MAX_LEN (ETH_ALEN * ADDRESS_GROUP_MAX)

struct multicast_grp_addr_start {
struct acx_dot11_grp_addr_tbl {
struct acx_header header;

u8 enabled;
Expand Down Expand Up @@ -730,90 +717,20 @@ struct acx_fw_gen_frame_rates {
} __attribute__ ((packed));

/* STA MAC */
struct dot11_station_id {
struct acx_dot11_station_id {
struct acx_header header;

u8 mac[ETH_ALEN];
u8 pad[2];
} __attribute__ ((packed));

/* HW encryption keys */
#define NUM_ACCESS_CATEGORIES_COPY 4
#define MAX_KEY_SIZE 32

/* When set, disable HW encryption */
#define DF_ENCRYPTION_DISABLE 0x01
/* When set, disable HW decryption */
#define DF_SNIFF_MODE_ENABLE 0x80

struct acx_feature_config {
struct acx_header header;

u32 options;
u32 data_flow_options;
} __attribute__ ((packed));

enum acx_key_action {
KEY_ADD_OR_REPLACE = 1,
KEY_REMOVE = 2,
KEY_SET_ID = 3,
MAX_KEY_ACTION = 0xffff,
};

enum acx_key_type {
KEY_WEP_DEFAULT = 0,
KEY_WEP_ADDR = 1,
KEY_AES_GROUP = 4,
KEY_AES_PAIRWISE = 5,
KEY_WEP_GROUP = 6,
KEY_TKIP_MIC_GROUP = 10,
KEY_TKIP_MIC_PAIRWISE = 11,
};

/*
*
* key_type_e key size key format
* ---------- --------- ----------
* 0x00 5, 13, 29 Key data
* 0x01 5, 13, 29 Key data
* 0x04 16 16 bytes of key data
* 0x05 16 16 bytes of key data
* 0x0a 32 16 bytes of TKIP key data
* 8 bytes of RX MIC key data
* 8 bytes of TX MIC key data
* 0x0b 32 16 bytes of TKIP key data
* 8 bytes of RX MIC key data
* 8 bytes of TX MIC key data
*
*/

struct acx_set_key {
/* Ignored for default WEP key */
u8 addr[ETH_ALEN];

/* key_action_e */
u16 key_action;

u16 reserved_1;

/* key size in bytes */
u8 key_size;

/* key_type_e */
u8 key_type;
u8 ssid_profile;

/*
* TKIP, AES: frame's key id field.
* For WEP default key: key id;
*/
u8 id;
u8 reserved_2[6];
u8 key[MAX_KEY_SIZE];
u16 ac_seq_num16[NUM_ACCESS_CATEGORIES_COPY];
u32 ac_seq_num32[NUM_ACCESS_CATEGORIES_COPY];
} __attribute__ ((packed));

struct acx_current_tx_power {
struct acx_header header;

Expand All @@ -839,26 +756,6 @@ struct acx_tsf_info {
u8 pad[3];
} __attribute__ ((packed));

/* 802.11 PS */
enum acx_ps_mode {
STATION_ACTIVE_MODE,
STATION_POWER_SAVE_MODE
};

struct acx_ps_params {
u8 ps_mode; /* STATION_* */
u8 send_null_data; /* Do we have to send NULL data packet ? */
u8 retries; /* Number of retires for the initial NULL data packet */

/*
* TUs during which the target stays awake after switching
* to power save mode.
*/
u8 hang_over_period;
u16 null_data_rate;
u8 pad[2];
} __attribute__ ((packed));

enum acx_wake_up_event {
WAKE_UP_EVENT_BEACON_BITMAP = 0x01, /* Wake on every Beacon*/
WAKE_UP_EVENT_DTIM_BITMAP = 0x02, /* Wake on every DTIM*/
Expand Down Expand Up @@ -892,6 +789,7 @@ enum acx_preamble_type {

struct acx_preamble {
struct acx_header header;

/*
* When set, the WiLink transmits the frames with a short preamble and
* when cleared, the WiLink transmits the frames with a long preamble.
Expand Down Expand Up @@ -1219,7 +1117,8 @@ int wl12xx_acx_sleep_auth(struct wl12xx *wl, u8 sleep_auth);
int wl12xx_acx_fw_version(struct wl12xx *wl, char *buf, size_t len);
int wl12xx_acx_tx_power(struct wl12xx *wl, int power);
int wl12xx_acx_feature_cfg(struct wl12xx *wl);
int wl12xx_acx_mem_map(struct wl12xx *wl, void *mem_map, size_t len);
int wl12xx_acx_mem_map(struct wl12xx *wl,
struct acx_header *mem_map, size_t len);
int wl12xx_acx_data_path_params(struct wl12xx *wl,
struct acx_data_path_params_resp *data_path);
int wl12xx_acx_rx_msdu_life_time(struct wl12xx *wl, u32 life_time);
Expand All @@ -1241,5 +1140,6 @@ int wl12xx_acx_set_preamble(struct wl12xx *wl, enum acx_preamble_type preamble);
int wl12xx_acx_cts_protect(struct wl12xx *wl,
enum acx_ctsprotect_type ctsprotect);
int wl12xx_acx_statistics(struct wl12xx *wl, struct acx_statistics *stats);
int wl12xx_acx_tsf_info(struct wl12xx *wl, u64 *mactime);

#endif /* __WL12XX_ACX_H__ */
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