2 * Copyright (c) 2012 Qualcomm Atheros, Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <linux/netdevice.h>
21 #include <linux/wireless.h>
22 #include <net/cfg80211.h>
24 #define WIL_NAME "wil6210"
27 * extract bits [@b0:@b1] (inclusive) from the value @x
28 * it should be @b0 <= @b1, or result is incorrect
30 static inline u32 WIL_GET_BITS(u32 x, int b0, int b1)
32 return (x >> b0) & ((1 << (b1 - b0 + 1)) - 1);
35 #define WIL6210_MEM_SIZE (2*1024*1024UL)
37 #define WIL6210_RX_RING_SIZE (128)
38 #define WIL6210_TX_RING_SIZE (128)
39 #define WIL6210_MAX_TX_RINGS (24) /* HW limit */
40 #define WIL6210_MAX_CID (8) /* HW limit */
41 #define WIL6210_NAPI_BUDGET (16) /* arbitrary */
42 #define WIL6210_ITR_TRSH (10000) /* arbitrary - about 15 IRQs/msec */
44 /* Hardware definitions begin */
48 * RGF File | Host addr | FW addr
50 * user_rgf | 0x000000 | 0x880000
51 * dma_rgf | 0x001000 | 0x881000
52 * pcie_rgf | 0x002000 | 0x882000
56 /* Where various structures placed in host address space */
57 #define WIL6210_FW_HOST_OFF (0x880000UL)
59 #define HOSTADDR(fwaddr) (fwaddr - WIL6210_FW_HOST_OFF)
62 * Interrupt control registers block
64 * each interrupt controlled by the same bit in all registers
67 u32 ICC; /* Cause Control, RW: 0 - W1C, 1 - COR */
68 u32 ICR; /* Cause, W1C/COR depending on ICC */
69 u32 ICM; /* Cause masked (ICR & ~IMV), W1C/COR depending on ICC */
70 u32 ICS; /* Cause Set, WO */
71 u32 IMV; /* Mask, RW+S/C */
72 u32 IMS; /* Mask Set, write 1 to set */
73 u32 IMC; /* Mask Clear, write 1 to clear */
76 /* registers - FW addresses */
77 #define RGF_USER_USER_SCRATCH_PAD (0x8802bc)
78 #define RGF_USER_USER_ICR (0x880b4c) /* struct RGF_ICR */
79 #define BIT_USER_USER_ICR_SW_INT_2 BIT(18)
80 #define RGF_USER_CLKS_CTL_SW_RST_MASK_0 (0x880b14)
81 #define RGF_USER_MAC_CPU_0 (0x8801fc)
82 #define RGF_USER_USER_CPU_0 (0x8801e0)
83 #define RGF_USER_CLKS_CTL_SW_RST_VEC_0 (0x880b04)
84 #define RGF_USER_CLKS_CTL_SW_RST_VEC_1 (0x880b08)
85 #define RGF_USER_CLKS_CTL_SW_RST_VEC_2 (0x880b0c)
86 #define RGF_USER_CLKS_CTL_SW_RST_VEC_3 (0x880b10)
88 #define RGF_DMA_PSEUDO_CAUSE (0x881c68)
89 #define RGF_DMA_PSEUDO_CAUSE_MASK_SW (0x881c6c)
90 #define RGF_DMA_PSEUDO_CAUSE_MASK_FW (0x881c70)
91 #define BIT_DMA_PSEUDO_CAUSE_RX BIT(0)
92 #define BIT_DMA_PSEUDO_CAUSE_TX BIT(1)
93 #define BIT_DMA_PSEUDO_CAUSE_MISC BIT(2)
95 #define RGF_DMA_EP_TX_ICR (0x881bb4) /* struct RGF_ICR */
96 #define BIT_DMA_EP_TX_ICR_TX_DONE BIT(0)
97 #define BIT_DMA_EP_TX_ICR_TX_DONE_N(n) BIT(n+1) /* n = [0..23] */
98 #define RGF_DMA_EP_RX_ICR (0x881bd0) /* struct RGF_ICR */
99 #define BIT_DMA_EP_RX_ICR_RX_DONE BIT(0)
100 #define RGF_DMA_EP_MISC_ICR (0x881bec) /* struct RGF_ICR */
101 #define BIT_DMA_EP_MISC_ICR_RX_HTRSH BIT(0)
102 #define BIT_DMA_EP_MISC_ICR_TX_NO_ACT BIT(1)
103 #define BIT_DMA_EP_MISC_ICR_FW_INT(n) BIT(28+n) /* n = [0..3] */
105 /* Interrupt moderation control */
106 #define RGF_DMA_ITR_CNT_TRSH (0x881c5c)
107 #define RGF_DMA_ITR_CNT_DATA (0x881c60)
108 #define RGF_DMA_ITR_CNT_CRL (0x881C64)
109 #define BIT_DMA_ITR_CNT_CRL_EN BIT(0)
110 #define BIT_DMA_ITR_CNT_CRL_EXT_TICK BIT(1)
111 #define BIT_DMA_ITR_CNT_CRL_FOREVER BIT(2)
112 #define BIT_DMA_ITR_CNT_CRL_CLR BIT(3)
113 #define BIT_DMA_ITR_CNT_CRL_REACH_TRSH BIT(4)
115 /* popular locations */
116 #define HOST_MBOX HOSTADDR(RGF_USER_USER_SCRATCH_PAD)
117 #define HOST_SW_INT (HOSTADDR(RGF_USER_USER_ICR) + \
118 offsetof(struct RGF_ICR, ICS))
119 #define SW_INT_MBOX BIT_USER_USER_ICR_SW_INT_2
121 /* ISR register bits */
122 #define ISR_MISC_FW_READY BIT_DMA_EP_MISC_ICR_FW_INT(0)
123 #define ISR_MISC_MBOX_EVT BIT_DMA_EP_MISC_ICR_FW_INT(1)
124 #define ISR_MISC_FW_ERROR BIT_DMA_EP_MISC_ICR_FW_INT(3)
126 /* Hardware definitions end */
129 * mk_cidxtid - construct @cidxtid field
133 * @cidxtid field encoded as bits 0..3 - CID; 4..7 - TID
135 static inline u8 mk_cidxtid(u8 cid, u8 tid)
137 return ((tid & 0xf) << 4) | (cid & 0xf);
141 * parse_cidxtid - parse @cidxtid field
142 * @cid: store CID value here
143 * @tid: store TID value here
145 * @cidxtid field encoded as bits 0..3 - CID; 4..7 - TID
147 static inline void parse_cidxtid(u8 cidxtid, u8 *cid, u8 *tid)
149 *cid = cidxtid & 0xf;
150 *tid = (cidxtid >> 4) & 0xf;
153 struct wil6210_mbox_ring {
155 u16 entry_size; /* max. size of mbox entry, incl. all headers */
161 struct wil6210_mbox_ring_desc {
166 /* at HOST_OFF_WIL6210_MBOX_CTL */
167 struct wil6210_mbox_ctl {
168 struct wil6210_mbox_ring tx;
169 struct wil6210_mbox_ring rx;
172 struct wil6210_mbox_hdr {
174 __le16 len; /* payload, bytes after this header */
180 #define WIL_MBOX_HDR_TYPE_WMI (0)
182 /* max. value for wil6210_mbox_hdr.len */
183 #define MAX_MBOXITEM_SIZE (240)
186 * struct wil6210_mbox_hdr_wmi - WMI header
189 * 00 - default, created by FW
190 * 01..0f - WiFi ports, driver to create
193 * @id: command/event ID
194 * @timestamp: FW fills for events, free-running msec timer
196 struct wil6210_mbox_hdr_wmi {
203 struct pending_wmi_event {
204 struct list_head list;
206 struct wil6210_mbox_hdr hdr;
207 struct wil6210_mbox_hdr_wmi wmi;
212 enum { /* for wil_ctx.mapped_as */
213 wil_mapped_as_none = 0,
214 wil_mapped_as_single = 1,
215 wil_mapped_as_page = 2,
219 * struct wil_ctx - software context for Vring descriptor
231 volatile union vring_desc *va; /* vring_desc[size], WriteBack by DMA */
232 u16 size; /* number of vring_desc elements */
235 u32 hwtail; /* write here to inform hw */
236 struct wil_ctx *ctx; /* ctx[size] - software context */
239 enum { /* for wil6210_priv.status */
240 wil_status_fwready = 0,
241 wil_status_fwconnecting,
242 wil_status_fwconnected,
244 wil_status_reset_done,
245 wil_status_irqen, /* FIXME: interrupts enabled - for debug */
251 * struct tid_ampdu_rx - TID aggregation information (Rx).
253 * @reorder_buf: buffer to reorder incoming aggregated MPDUs
254 * @reorder_time: jiffies when skb was added
255 * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
256 * @reorder_timer: releases expired frames from the reorder buffer.
257 * @last_rx: jiffies of last rx activity
258 * @head_seq_num: head sequence number in reordering buffer.
259 * @stored_mpdu_num: number of MPDUs in reordering buffer
260 * @ssn: Starting Sequence Number expected to be aggregated.
261 * @buf_size: buffer size for incoming A-MPDUs
262 * @timeout: reset timer value (in TUs).
263 * @dialog_token: dialog token for aggregation session
264 * @rcu_head: RCU head used for freeing this struct
265 * @reorder_lock: serializes access to reorder buffer, see below.
267 * This structure's lifetime is managed by RCU, assignments to
268 * the array holding it must hold the aggregation mutex.
270 * The @reorder_lock is used to protect the members of this
271 * struct, except for @timeout, @buf_size and @dialog_token,
272 * which are constant across the lifetime of the struct (the
273 * dialog token being used only for debugging).
275 struct wil_tid_ampdu_rx {
276 spinlock_t reorder_lock; /* see above */
277 struct sk_buff **reorder_buf;
278 unsigned long *reorder_time;
279 struct timer_list session_timer;
280 struct timer_list reorder_timer;
281 unsigned long last_rx;
290 struct wil6210_stats {
294 u16 bf_mcs; /* last BF, used for Tx */
301 enum wil_sta_status {
303 wil_sta_conn_pending = 1,
304 wil_sta_connected = 2,
307 #define WIL_STA_TID_NUM (16)
309 struct wil_net_stats {
310 unsigned long rx_packets;
311 unsigned long tx_packets;
312 unsigned long rx_bytes;
313 unsigned long tx_bytes;
314 unsigned long tx_errors;
315 unsigned long rx_dropped;
320 * struct wil_sta_info - data for peer
322 * Peer identified by its CID (connection ID)
323 * NIC performs beam forming for each peer;
324 * if no beam forming done, frame exchange is not
327 struct wil_sta_info {
329 enum wil_sta_status status;
330 struct wil_net_stats stats;
331 bool data_port_open; /* can send any data, not only EAPOL */
333 struct wil_tid_ampdu_rx *tid_rx[WIL_STA_TID_NUM];
334 unsigned long tid_rx_timer_expired[BITS_TO_LONGS(WIL_STA_TID_NUM)];
335 unsigned long tid_rx_stop_requested[BITS_TO_LONGS(WIL_STA_TID_NUM)];
338 struct wil6210_priv {
339 struct pci_dev *pdev;
341 struct wireless_dev *wdev;
345 u8 n_mids; /* number of additional MIDs as reported by FW */
348 u32 secure_pcp; /* create secure PCP? */
350 /* cached ISR registers */
352 /* mailbox related */
353 struct mutex wmi_mutex;
354 struct wil6210_mbox_ctl mbox_ctl;
355 struct completion wmi_ready;
357 u16 reply_id; /**< wait for this WMI event */
360 struct workqueue_struct *wmi_wq; /* for deferred calls */
361 struct work_struct wmi_event_worker;
362 struct workqueue_struct *wmi_wq_conn; /* for connect worker */
363 struct work_struct connect_worker;
364 struct work_struct disconnect_worker;
365 struct timer_list connect_timer;
366 int pending_connect_cid;
367 struct list_head pending_wmi_ev;
369 * protect pending_wmi_ev
370 * - fill in IRQ from wil6210_irq_misc,
371 * - consumed in thread by wmi_event_worker
373 spinlock_t wmi_ev_lock;
374 struct napi_struct napi_rx;
375 struct napi_struct napi_tx;
377 struct vring vring_rx;
378 struct vring vring_tx[WIL6210_MAX_TX_RINGS];
379 u8 vring2cid_tid[WIL6210_MAX_TX_RINGS][2]; /* [0] - CID, [1] - TID */
380 struct wil_sta_info sta[WIL6210_MAX_CID];
382 struct cfg80211_scan_request *scan_request;
384 struct mutex mutex; /* for wil6210_priv access in wil_{up|down} */
386 struct wil6210_stats stats;
388 struct dentry *debug;
389 struct debugfs_blob_wrapper fw_code_blob;
390 struct debugfs_blob_wrapper fw_data_blob;
391 struct debugfs_blob_wrapper fw_peri_blob;
392 struct debugfs_blob_wrapper uc_code_blob;
393 struct debugfs_blob_wrapper uc_data_blob;
394 struct debugfs_blob_wrapper rgf_blob;
397 #define wil_to_wiphy(i) (i->wdev->wiphy)
398 #define wil_to_dev(i) (wiphy_dev(wil_to_wiphy(i)))
399 #define wiphy_to_wil(w) (struct wil6210_priv *)(wiphy_priv(w))
400 #define wil_to_wdev(i) (i->wdev)
401 #define wdev_to_wil(w) (struct wil6210_priv *)(wdev_priv(w))
402 #define wil_to_ndev(i) (wil_to_wdev(i)->netdev)
403 #define ndev_to_wil(n) (wdev_to_wil(n->ieee80211_ptr))
405 int wil_dbg_trace(struct wil6210_priv *wil, const char *fmt, ...);
406 int wil_err(struct wil6210_priv *wil, const char *fmt, ...);
407 int wil_info(struct wil6210_priv *wil, const char *fmt, ...);
408 #define wil_dbg(wil, fmt, arg...) do { \
409 netdev_dbg(wil_to_ndev(wil), fmt, ##arg); \
410 wil_dbg_trace(wil, fmt, ##arg); \
413 #define wil_dbg_irq(wil, fmt, arg...) wil_dbg(wil, "DBG[ IRQ]" fmt, ##arg)
414 #define wil_dbg_txrx(wil, fmt, arg...) wil_dbg(wil, "DBG[TXRX]" fmt, ##arg)
415 #define wil_dbg_wmi(wil, fmt, arg...) wil_dbg(wil, "DBG[ WMI]" fmt, ##arg)
416 #define wil_dbg_misc(wil, fmt, arg...) wil_dbg(wil, "DBG[MISC]" fmt, ##arg)
418 #define wil_hex_dump_txrx(prefix_str, prefix_type, rowsize, \
419 groupsize, buf, len, ascii) \
420 print_hex_dump_debug("DBG[TXRX]" prefix_str,\
421 prefix_type, rowsize, \
422 groupsize, buf, len, ascii)
424 #define wil_hex_dump_wmi(prefix_str, prefix_type, rowsize, \
425 groupsize, buf, len, ascii) \
426 print_hex_dump_debug("DBG[ WMI]" prefix_str,\
427 prefix_type, rowsize, \
428 groupsize, buf, len, ascii)
430 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src,
432 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
435 void *wil_if_alloc(struct device *dev, void __iomem *csr);
436 void wil_if_free(struct wil6210_priv *wil);
437 int wil_if_add(struct wil6210_priv *wil);
438 void wil_if_remove(struct wil6210_priv *wil);
439 int wil_priv_init(struct wil6210_priv *wil);
440 void wil_priv_deinit(struct wil6210_priv *wil);
441 int wil_reset(struct wil6210_priv *wil);
442 void wil_link_on(struct wil6210_priv *wil);
443 void wil_link_off(struct wil6210_priv *wil);
444 int wil_up(struct wil6210_priv *wil);
445 int wil_down(struct wil6210_priv *wil);
446 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r);
447 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac);
449 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr);
450 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr);
451 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
452 struct wil6210_mbox_hdr *hdr);
453 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len);
454 void wmi_recv_cmd(struct wil6210_priv *wil);
455 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
456 u16 reply_id, void *reply, u8 reply_size, int to_msec);
457 void wmi_event_worker(struct work_struct *work);
458 void wmi_event_flush(struct wil6210_priv *wil);
459 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid);
460 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid);
461 int wmi_set_channel(struct wil6210_priv *wil, int channel);
462 int wmi_get_channel(struct wil6210_priv *wil, int *channel);
463 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
464 const void *mac_addr);
465 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
466 const void *mac_addr, int key_len, const void *key);
467 int wmi_echo(struct wil6210_priv *wil);
468 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie);
469 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring);
470 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel);
471 int wmi_rxon(struct wil6210_priv *wil, bool on);
472 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r);
473 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason);
475 int wil6210_init_irq(struct wil6210_priv *wil, int irq);
476 void wil6210_fini_irq(struct wil6210_priv *wil, int irq);
477 void wil6210_disable_irq(struct wil6210_priv *wil);
478 void wil6210_enable_irq(struct wil6210_priv *wil);
480 int wil6210_debugfs_init(struct wil6210_priv *wil);
481 void wil6210_debugfs_remove(struct wil6210_priv *wil);
483 struct wireless_dev *wil_cfg80211_init(struct device *dev);
484 void wil_wdev_free(struct wil6210_priv *wil);
486 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr);
487 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan);
488 int wmi_pcp_stop(struct wil6210_priv *wil);
489 void wil6210_disconnect(struct wil6210_priv *wil, void *bssid);
491 int wil_rx_init(struct wil6210_priv *wil);
492 void wil_rx_fini(struct wil6210_priv *wil);
495 int wil_vring_init_tx(struct wil6210_priv *wil, int id, int size,
497 void wil_vring_fini_tx(struct wil6210_priv *wil, int id);
499 netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev);
500 int wil_tx_complete(struct wil6210_priv *wil, int ringid);
501 void wil6210_unmask_irq_tx(struct wil6210_priv *wil);
504 void wil_rx_handle(struct wil6210_priv *wil, int *quota);
505 void wil6210_unmask_irq_rx(struct wil6210_priv *wil);
507 int wil_iftype_nl2wmi(enum nl80211_iftype type);
509 #endif /* __WIL6210_H__ */