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linux/drivers/net/wireless/ath/wil6210/wil6210.h

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/*
* Copyright (c) 2012 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __WIL6210_H__
#define __WIL6210_H__
#include <linux/netdevice.h>
#include <linux/wireless.h>
#include <net/cfg80211.h>
#define WIL_NAME "wil6210"
/**
* extract bits [@b0:@b1] (inclusive) from the value @x
* it should be @b0 <= @b1, or result is incorrect
*/
static inline u32 WIL_GET_BITS(u32 x, int b0, int b1)
{
return (x >> b0) & ((1 << (b1 - b0 + 1)) - 1);
}
#define WIL6210_MEM_SIZE (2*1024*1024UL)
#define WIL6210_RX_RING_SIZE (128)
#define WIL6210_TX_RING_SIZE (512)
#define WIL6210_MAX_TX_RINGS (24) /* HW limit */
#define WIL6210_MAX_CID (8) /* HW limit */
#define WIL6210_NAPI_BUDGET (16) /* arbitrary */
#define WIL6210_ITR_TRSH (10000) /* arbitrary - about 15 IRQs/msec */
#define WIL6210_FW_RECOVERY_RETRIES (5) /* try to recover this many times */
#define WIL6210_FW_RECOVERY_TO msecs_to_jiffies(5000)
#define WIL6210_SCAN_TO msecs_to_jiffies(10000)
/* Hardware definitions begin */
/*
* Mapping
* RGF File | Host addr | FW addr
* | |
* user_rgf | 0x000000 | 0x880000
* dma_rgf | 0x001000 | 0x881000
* pcie_rgf | 0x002000 | 0x882000
* | |
*/
/* Where various structures placed in host address space */
#define WIL6210_FW_HOST_OFF (0x880000UL)
#define HOSTADDR(fwaddr) (fwaddr - WIL6210_FW_HOST_OFF)
/*
* Interrupt control registers block
*
* each interrupt controlled by the same bit in all registers
*/
struct RGF_ICR {
u32 ICC; /* Cause Control, RW: 0 - W1C, 1 - COR */
u32 ICR; /* Cause, W1C/COR depending on ICC */
u32 ICM; /* Cause masked (ICR & ~IMV), W1C/COR depending on ICC */
u32 ICS; /* Cause Set, WO */
u32 IMV; /* Mask, RW+S/C */
u32 IMS; /* Mask Set, write 1 to set */
u32 IMC; /* Mask Clear, write 1 to clear */
} __packed;
/* registers - FW addresses */
#define RGF_USER_HW_MACHINE_STATE (0x8801dc)
#define HW_MACHINE_BOOT_DONE (0x3fffffd)
#define RGF_USER_USER_CPU_0 (0x8801e0)
#define RGF_USER_MAC_CPU_0 (0x8801fc)
#define RGF_USER_USER_SCRATCH_PAD (0x8802bc)
#define RGF_USER_FW_REV_ID (0x880a8c) /* chip revision */
#define RGF_USER_CLKS_CTL_0 (0x880abc)
#define BIT_USER_CLKS_RST_PWGD BIT(11) /* reset on "power good" */
#define RGF_USER_CLKS_CTL_SW_RST_VEC_0 (0x880b04)
#define RGF_USER_CLKS_CTL_SW_RST_VEC_1 (0x880b08)
#define RGF_USER_CLKS_CTL_SW_RST_VEC_2 (0x880b0c)
#define RGF_USER_CLKS_CTL_SW_RST_VEC_3 (0x880b10)
#define RGF_USER_CLKS_CTL_SW_RST_MASK_0 (0x880b14)
#define RGF_USER_USER_ICR (0x880b4c) /* struct RGF_ICR */
#define BIT_USER_USER_ICR_SW_INT_2 BIT(18)
#define RGF_DMA_EP_TX_ICR (0x881bb4) /* struct RGF_ICR */
#define BIT_DMA_EP_TX_ICR_TX_DONE BIT(0)
#define BIT_DMA_EP_TX_ICR_TX_DONE_N(n) BIT(n+1) /* n = [0..23] */
#define RGF_DMA_EP_RX_ICR (0x881bd0) /* struct RGF_ICR */
#define BIT_DMA_EP_RX_ICR_RX_DONE BIT(0)
#define RGF_DMA_EP_MISC_ICR (0x881bec) /* struct RGF_ICR */
#define BIT_DMA_EP_MISC_ICR_RX_HTRSH BIT(0)
#define BIT_DMA_EP_MISC_ICR_TX_NO_ACT BIT(1)
#define BIT_DMA_EP_MISC_ICR_FW_INT(n) BIT(28+n) /* n = [0..3] */
/* Interrupt moderation control */
#define RGF_DMA_ITR_CNT_TRSH (0x881c5c)
#define RGF_DMA_ITR_CNT_DATA (0x881c60)
#define RGF_DMA_ITR_CNT_CRL (0x881c64)
#define BIT_DMA_ITR_CNT_CRL_EN BIT(0)
#define BIT_DMA_ITR_CNT_CRL_EXT_TICK BIT(1)
#define BIT_DMA_ITR_CNT_CRL_FOREVER BIT(2)
#define BIT_DMA_ITR_CNT_CRL_CLR BIT(3)
#define BIT_DMA_ITR_CNT_CRL_REACH_TRSH BIT(4)
#define RGF_DMA_PSEUDO_CAUSE (0x881c68)
#define RGF_DMA_PSEUDO_CAUSE_MASK_SW (0x881c6c)
#define RGF_DMA_PSEUDO_CAUSE_MASK_FW (0x881c70)
#define BIT_DMA_PSEUDO_CAUSE_RX BIT(0)
#define BIT_DMA_PSEUDO_CAUSE_TX BIT(1)
#define BIT_DMA_PSEUDO_CAUSE_MISC BIT(2)
#define RGF_PCIE_LOS_COUNTER_CTL (0x882dc4)
/* popular locations */
#define HOST_MBOX HOSTADDR(RGF_USER_USER_SCRATCH_PAD)
#define HOST_SW_INT (HOSTADDR(RGF_USER_USER_ICR) + \
offsetof(struct RGF_ICR, ICS))
#define SW_INT_MBOX BIT_USER_USER_ICR_SW_INT_2
/* ISR register bits */
#define ISR_MISC_FW_READY BIT_DMA_EP_MISC_ICR_FW_INT(0)
#define ISR_MISC_MBOX_EVT BIT_DMA_EP_MISC_ICR_FW_INT(1)
#define ISR_MISC_FW_ERROR BIT_DMA_EP_MISC_ICR_FW_INT(3)
/* Hardware definitions end */
/**
* mk_cidxtid - construct @cidxtid field
* @cid: CID value
* @tid: TID value
*
* @cidxtid field encoded as bits 0..3 - CID; 4..7 - TID
*/
static inline u8 mk_cidxtid(u8 cid, u8 tid)
{
return ((tid & 0xf) << 4) | (cid & 0xf);
}
/**
* parse_cidxtid - parse @cidxtid field
* @cid: store CID value here
* @tid: store TID value here
*
* @cidxtid field encoded as bits 0..3 - CID; 4..7 - TID
*/
static inline void parse_cidxtid(u8 cidxtid, u8 *cid, u8 *tid)
{
*cid = cidxtid & 0xf;
*tid = (cidxtid >> 4) & 0xf;
}
struct wil6210_mbox_ring {
u32 base;
u16 entry_size; /* max. size of mbox entry, incl. all headers */
u16 size;
u32 tail;
u32 head;
} __packed;
struct wil6210_mbox_ring_desc {
__le32 sync;
__le32 addr;
} __packed;
/* at HOST_OFF_WIL6210_MBOX_CTL */
struct wil6210_mbox_ctl {
struct wil6210_mbox_ring tx;
struct wil6210_mbox_ring rx;
} __packed;
struct wil6210_mbox_hdr {
__le16 seq;
__le16 len; /* payload, bytes after this header */
__le16 type;
u8 flags;
u8 reserved;
} __packed;
#define WIL_MBOX_HDR_TYPE_WMI (0)
/* max. value for wil6210_mbox_hdr.len */
#define MAX_MBOXITEM_SIZE (240)
/**
* struct wil6210_mbox_hdr_wmi - WMI header
*
* @mid: MAC ID
* 00 - default, created by FW
* 01..0f - WiFi ports, driver to create
* 10..fe - debug
* ff - broadcast
* @id: command/event ID
* @timestamp: FW fills for events, free-running msec timer
*/
struct wil6210_mbox_hdr_wmi {
u8 mid;
u8 reserved;
__le16 id;
__le32 timestamp;
} __packed;
struct pending_wmi_event {
struct list_head list;
struct {
struct wil6210_mbox_hdr hdr;
struct wil6210_mbox_hdr_wmi wmi;
u8 data[0];
} __packed event;
};
enum { /* for wil_ctx.mapped_as */
wil_mapped_as_none = 0,
wil_mapped_as_single = 1,
wil_mapped_as_page = 2,
};
/**
* struct wil_ctx - software context for Vring descriptor
*/
struct wil_ctx {
struct sk_buff *skb;
u8 nr_frags;
u8 mapped_as;
};
union vring_desc;
struct vring {
dma_addr_t pa;
volatile union vring_desc *va; /* vring_desc[size], WriteBack by DMA */
u16 size; /* number of vring_desc elements */
u32 swtail;
u32 swhead;
u32 hwtail; /* write here to inform hw */
struct wil_ctx *ctx; /* ctx[size] - software context */
};
/**
* Additional data for Tx Vring
*/
struct vring_tx_data {
int enabled;
};
enum { /* for wil6210_priv.status */
wil_status_fwready = 0,
wil_status_fwconnecting,
wil_status_fwconnected,
wil_status_dontscan,
wil_status_reset_done,
wil_status_irqen, /* FIXME: interrupts enabled - for debug */
wil_status_napi_en, /* NAPI enabled protected by wil->mutex */
};
struct pci_dev;
/**
* struct tid_ampdu_rx - TID aggregation information (Rx).
*
* @reorder_buf: buffer to reorder incoming aggregated MPDUs
* @reorder_time: jiffies when skb was added
* @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
* @reorder_timer: releases expired frames from the reorder buffer.
* @last_rx: jiffies of last rx activity
* @head_seq_num: head sequence number in reordering buffer.
* @stored_mpdu_num: number of MPDUs in reordering buffer
* @ssn: Starting Sequence Number expected to be aggregated.
* @buf_size: buffer size for incoming A-MPDUs
* @timeout: reset timer value (in TUs).
* @dialog_token: dialog token for aggregation session
* @rcu_head: RCU head used for freeing this struct
* @reorder_lock: serializes access to reorder buffer, see below.
*
* This structure's lifetime is managed by RCU, assignments to
* the array holding it must hold the aggregation mutex.
*
* The @reorder_lock is used to protect the members of this
* struct, except for @timeout, @buf_size and @dialog_token,
* which are constant across the lifetime of the struct (the
* dialog token being used only for debugging).
*/
struct wil_tid_ampdu_rx {
spinlock_t reorder_lock; /* see above */
struct sk_buff **reorder_buf;
unsigned long *reorder_time;
struct timer_list session_timer;
struct timer_list reorder_timer;
unsigned long last_rx;
u16 head_seq_num;
u16 stored_mpdu_num;
u16 ssn;
u16 buf_size;
u16 timeout;
u8 dialog_token;
bool first_time; /* is it 1-st time this buffer used? */
};
struct wil6210_stats {
u64 tsf;
u32 snr;
u16 last_mcs_rx;
u16 bf_mcs; /* last BF, used for Tx */
u16 my_rx_sector;
u16 my_tx_sector;
u16 peer_rx_sector;
u16 peer_tx_sector;
};
enum wil_sta_status {
wil_sta_unused = 0,
wil_sta_conn_pending = 1,
wil_sta_connected = 2,
};
#define WIL_STA_TID_NUM (16)
struct wil_net_stats {
unsigned long rx_packets;
unsigned long tx_packets;
unsigned long rx_bytes;
unsigned long tx_bytes;
unsigned long tx_errors;
unsigned long rx_dropped;
u16 last_mcs_rx;
};
/**
* struct wil_sta_info - data for peer
*
* Peer identified by its CID (connection ID)
* NIC performs beam forming for each peer;
* if no beam forming done, frame exchange is not
* possible.
*/
struct wil_sta_info {
u8 addr[ETH_ALEN];
enum wil_sta_status status;
struct wil_net_stats stats;
bool data_port_open; /* can send any data, not only EAPOL */
/* Rx BACK */
struct wil_tid_ampdu_rx *tid_rx[WIL_STA_TID_NUM];
unsigned long tid_rx_timer_expired[BITS_TO_LONGS(WIL_STA_TID_NUM)];
unsigned long tid_rx_stop_requested[BITS_TO_LONGS(WIL_STA_TID_NUM)];
};
struct wil6210_priv {
struct pci_dev *pdev;
int n_msi;
struct wireless_dev *wdev;
void __iomem *csr;
ulong status;
u32 fw_version;
u32 hw_version;
u8 n_mids; /* number of additional MIDs as reported by FW */
int recovery_count; /* num of FW recovery attempts in a short time */
unsigned long last_fw_recovery; /* jiffies of last fw recovery */
/* profile */
u32 monitor_flags;
u32 secure_pcp; /* create secure PCP? */
int sinfo_gen;
/* cached ISR registers */
u32 isr_misc;
/* mailbox related */
struct mutex wmi_mutex;
struct wil6210_mbox_ctl mbox_ctl;
struct completion wmi_ready;
u16 wmi_seq;
u16 reply_id; /**< wait for this WMI event */
void *reply_buf;
u16 reply_size;
struct workqueue_struct *wmi_wq; /* for deferred calls */
struct work_struct wmi_event_worker;
struct workqueue_struct *wmi_wq_conn; /* for connect worker */
struct work_struct connect_worker;
struct work_struct disconnect_worker;
struct work_struct fw_error_worker; /* for FW error recovery */
struct timer_list connect_timer;
struct timer_list scan_timer; /* detect scan timeout */
int pending_connect_cid;
struct list_head pending_wmi_ev;
/*
* protect pending_wmi_ev
* - fill in IRQ from wil6210_irq_misc,
* - consumed in thread by wmi_event_worker
*/
spinlock_t wmi_ev_lock;
struct napi_struct napi_rx;
struct napi_struct napi_tx;
/* DMA related */
struct vring vring_rx;
struct vring vring_tx[WIL6210_MAX_TX_RINGS];
struct vring_tx_data vring_tx_data[WIL6210_MAX_TX_RINGS];
u8 vring2cid_tid[WIL6210_MAX_TX_RINGS][2]; /* [0] - CID, [1] - TID */
struct wil_sta_info sta[WIL6210_MAX_CID];
/* scan */
struct cfg80211_scan_request *scan_request;
struct mutex mutex; /* for wil6210_priv access in wil_{up|down} */
/* statistics */
struct wil6210_stats stats;
/* debugfs */
struct dentry *debug;
struct debugfs_blob_wrapper fw_code_blob;
struct debugfs_blob_wrapper fw_data_blob;
struct debugfs_blob_wrapper fw_peri_blob;
struct debugfs_blob_wrapper uc_code_blob;
struct debugfs_blob_wrapper uc_data_blob;
struct debugfs_blob_wrapper rgf_blob;
};
#define wil_to_wiphy(i) (i->wdev->wiphy)
#define wil_to_dev(i) (wiphy_dev(wil_to_wiphy(i)))
#define wiphy_to_wil(w) (struct wil6210_priv *)(wiphy_priv(w))
#define wil_to_wdev(i) (i->wdev)
#define wdev_to_wil(w) (struct wil6210_priv *)(wdev_priv(w))
#define wil_to_ndev(i) (wil_to_wdev(i)->netdev)
#define ndev_to_wil(n) (wdev_to_wil(n->ieee80211_ptr))
int wil_dbg_trace(struct wil6210_priv *wil, const char *fmt, ...);
int wil_err(struct wil6210_priv *wil, const char *fmt, ...);
int wil_info(struct wil6210_priv *wil, const char *fmt, ...);
#define wil_dbg(wil, fmt, arg...) do { \
netdev_dbg(wil_to_ndev(wil), fmt, ##arg); \
wil_dbg_trace(wil, fmt, ##arg); \
} while (0)
#define wil_dbg_irq(wil, fmt, arg...) wil_dbg(wil, "DBG[ IRQ]" fmt, ##arg)
#define wil_dbg_txrx(wil, fmt, arg...) wil_dbg(wil, "DBG[TXRX]" fmt, ##arg)
#define wil_dbg_wmi(wil, fmt, arg...) wil_dbg(wil, "DBG[ WMI]" fmt, ##arg)
#define wil_dbg_misc(wil, fmt, arg...) wil_dbg(wil, "DBG[MISC]" fmt, ##arg)
#define wil_hex_dump_txrx(prefix_str, prefix_type, rowsize, \
groupsize, buf, len, ascii) \
print_hex_dump_debug("DBG[TXRX]" prefix_str,\
prefix_type, rowsize, \
groupsize, buf, len, ascii)
#define wil_hex_dump_wmi(prefix_str, prefix_type, rowsize, \
groupsize, buf, len, ascii) \
print_hex_dump_debug("DBG[ WMI]" prefix_str,\
prefix_type, rowsize, \
groupsize, buf, len, ascii)
void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src,
size_t count);
void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
size_t count);
void *wil_if_alloc(struct device *dev, void __iomem *csr);
void wil_if_free(struct wil6210_priv *wil);
int wil_if_add(struct wil6210_priv *wil);
void wil_if_remove(struct wil6210_priv *wil);
int wil_priv_init(struct wil6210_priv *wil);
void wil_priv_deinit(struct wil6210_priv *wil);
int wil_reset(struct wil6210_priv *wil);
void wil_fw_error_recovery(struct wil6210_priv *wil);
void wil_link_on(struct wil6210_priv *wil);
void wil_link_off(struct wil6210_priv *wil);
int wil_up(struct wil6210_priv *wil);
int wil_down(struct wil6210_priv *wil);
void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r);
int wil_find_cid(struct wil6210_priv *wil, const u8 *mac);
void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr);
void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr);
int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
struct wil6210_mbox_hdr *hdr);
int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len);
void wmi_recv_cmd(struct wil6210_priv *wil);
int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
u16 reply_id, void *reply, u8 reply_size, int to_msec);
void wmi_event_worker(struct work_struct *work);
void wmi_event_flush(struct wil6210_priv *wil);
int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid);
int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid);
int wmi_set_channel(struct wil6210_priv *wil, int channel);
int wmi_get_channel(struct wil6210_priv *wil, int *channel);
int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
const void *mac_addr);
int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
const void *mac_addr, int key_len, const void *key);
int wmi_echo(struct wil6210_priv *wil);
int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie);
int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring);
int wmi_p2p_cfg(struct wil6210_priv *wil, int channel);
int wmi_rxon(struct wil6210_priv *wil, bool on);
int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r);
int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason);
void wil6210_clear_irq(struct wil6210_priv *wil);
int wil6210_init_irq(struct wil6210_priv *wil, int irq);
void wil6210_fini_irq(struct wil6210_priv *wil, int irq);
void wil6210_disable_irq(struct wil6210_priv *wil);
void wil6210_enable_irq(struct wil6210_priv *wil);
int wil6210_debugfs_init(struct wil6210_priv *wil);
void wil6210_debugfs_remove(struct wil6210_priv *wil);
struct wireless_dev *wil_cfg80211_init(struct device *dev);
void wil_wdev_free(struct wil6210_priv *wil);
int wmi_set_mac_address(struct wil6210_priv *wil, void *addr);
int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan);
int wmi_pcp_stop(struct wil6210_priv *wil);
void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid);
int wil_rx_init(struct wil6210_priv *wil);
void wil_rx_fini(struct wil6210_priv *wil);
/* TX API */
int wil_vring_init_tx(struct wil6210_priv *wil, int id, int size,
int cid, int tid);
void wil_vring_fini_tx(struct wil6210_priv *wil, int id);
netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev);
int wil_tx_complete(struct wil6210_priv *wil, int ringid);
void wil6210_unmask_irq_tx(struct wil6210_priv *wil);
/* RX API */
void wil_rx_handle(struct wil6210_priv *wil, int *quota);
void wil6210_unmask_irq_rx(struct wil6210_priv *wil);
int wil_iftype_nl2wmi(enum nl80211_iftype type);
#endif /* __WIL6210_H__ */
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