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

   1 /*
   2  * Copyright (c) 2012 Qualcomm Atheros, Inc.
   3  *
   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.
   7  *
   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.
  15  */
  16
  17 #ifndef __WIL6210_H__
  18 #define __WIL6210_H__
  19
  20 #include <linux/netdevice.h>
  21 #include <linux/wireless.h>
  22 #include <net/cfg80211.h>
  23
  24 #define WIL_NAME "wil6210"
  25
  26 /**
  27  * extract bits [@b0:@b1] (inclusive) from the value @x
  28  * it should be @b0 <= @b1, or result is incorrect
  29  */
  30 static inline u32 WIL_GET_BITS(u32 x, int b0, int b1)
  31 {
  32         return (x >> b0) & ((1 << (b1 - b0 + 1)) - 1);
  33 }
  34
  35 #define WIL6210_MEM_SIZE (2*1024*1024UL)
  36
  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
  43 /* Hardware definitions begin */
  44
  45 /*
  46  * Mapping
  47  * RGF File      | Host addr    |  FW addr
  48  *               |              |
  49  * user_rgf      | 0x000000     | 0x880000
  50  *  dma_rgf      | 0x001000     | 0x881000
  51  * pcie_rgf      | 0x002000     | 0x882000
  52  *               |              |
  53  */
  54
  55 /* Where various structures placed in host address space */
  56 #define WIL6210_FW_HOST_OFF      (0x880000UL)
  57
  58 #define HOSTADDR(fwaddr)        (fwaddr - WIL6210_FW_HOST_OFF)
  59
  60 /*
  61  * Interrupt control registers block
  62  *
  63  * each interrupt controlled by the same bit in all registers
  64  */
  65 struct RGF_ICR {
  66         u32 ICC; /* Cause Control, RW: 0 - W1C, 1 - COR */
  67         u32 ICR; /* Cause, W1C/COR depending on ICC */
  68         u32 ICM; /* Cause masked (ICR & ~IMV), W1C/COR depending on ICC */
  69         u32 ICS; /* Cause Set, WO */
  70         u32 IMV; /* Mask, RW+S/C */
  71         u32 IMS; /* Mask Set, write 1 to set */
  72         u32 IMC; /* Mask Clear, write 1 to clear */
  73 } __packed;
  74
  75 /* registers - FW addresses */
  76 #define RGF_USER_USER_SCRATCH_PAD       (0x8802bc)
  77 #define RGF_USER_USER_ICR               (0x880b4c) /* struct RGF_ICR */
  78         #define BIT_USER_USER_ICR_SW_INT_2      BIT(18)
  79 #define RGF_USER_CLKS_CTL_SW_RST_MASK_0 (0x880b14)
  80 #define RGF_USER_MAC_CPU_0              (0x8801fc)
  81 #define RGF_USER_USER_CPU_0             (0x8801e0)
  82 #define RGF_USER_CLKS_CTL_SW_RST_VEC_0  (0x880b04)
  83 #define RGF_USER_CLKS_CTL_SW_RST_VEC_1  (0x880b08)
  84 #define RGF_USER_CLKS_CTL_SW_RST_VEC_2  (0x880b0c)
  85 #define RGF_USER_CLKS_CTL_SW_RST_VEC_3  (0x880b10)
  86
  87 #define RGF_DMA_PSEUDO_CAUSE            (0x881c68)
  88 #define RGF_DMA_PSEUDO_CAUSE_MASK_SW    (0x881c6c)
  89 #define RGF_DMA_PSEUDO_CAUSE_MASK_FW    (0x881c70)
  90         #define BIT_DMA_PSEUDO_CAUSE_RX         BIT(0)
  91         #define BIT_DMA_PSEUDO_CAUSE_TX         BIT(1)
  92         #define BIT_DMA_PSEUDO_CAUSE_MISC       BIT(2)
  93
  94 #define RGF_DMA_EP_TX_ICR               (0x881bb4) /* struct RGF_ICR */
  95         #define BIT_DMA_EP_TX_ICR_TX_DONE       BIT(0)
  96         #define BIT_DMA_EP_TX_ICR_TX_DONE_N(n)  BIT(n+1) /* n = [0..23] */
  97 #define RGF_DMA_EP_RX_ICR               (0x881bd0) /* struct RGF_ICR */
  98         #define BIT_DMA_EP_RX_ICR_RX_DONE       BIT(0)
  99 #define RGF_DMA_EP_MISC_ICR             (0x881bec) /* struct RGF_ICR */
 100         #define BIT_DMA_EP_MISC_ICR_RX_HTRSH    BIT(0)
 101         #define BIT_DMA_EP_MISC_ICR_TX_NO_ACT   BIT(1)
 102         #define BIT_DMA_EP_MISC_ICR_FW_INT(n)   BIT(28+n) /* n = [0..3] */
 103
 104 /* Interrupt moderation control */
 105 #define RGF_DMA_ITR_CNT_TRSH            (0x881c5c)
 106 #define RGF_DMA_ITR_CNT_DATA            (0x881c60)
 107 #define RGF_DMA_ITR_CNT_CRL             (0x881C64)
 108         #define BIT_DMA_ITR_CNT_CRL_EN          BIT(0)
 109         #define BIT_DMA_ITR_CNT_CRL_EXT_TICK    BIT(1)
 110         #define BIT_DMA_ITR_CNT_CRL_FOREVER     BIT(2)
 111         #define BIT_DMA_ITR_CNT_CRL_CLR         BIT(3)
 112         #define BIT_DMA_ITR_CNT_CRL_REACH_TRSH  BIT(4)
 113
 114 /* popular locations */
 115 #define HOST_MBOX   HOSTADDR(RGF_USER_USER_SCRATCH_PAD)
 116 #define HOST_SW_INT (HOSTADDR(RGF_USER_USER_ICR) + \
 117         offsetof(struct RGF_ICR, ICS))
 118 #define SW_INT_MBOX BIT_USER_USER_ICR_SW_INT_2
 119
 120 /* ISR register bits */
 121 #define ISR_MISC_FW_READY       BIT_DMA_EP_MISC_ICR_FW_INT(0)
 122 #define ISR_MISC_MBOX_EVT       BIT_DMA_EP_MISC_ICR_FW_INT(1)
 123 #define ISR_MISC_FW_ERROR       BIT_DMA_EP_MISC_ICR_FW_INT(3)
 124
 125 /* Hardware definitions end */
 126
 127 struct wil6210_mbox_ring {
 128         u32 base;
 129         u16 entry_size; /* max. size of mbox entry, incl. all headers */
 130         u16 size;
 131         u32 tail;
 132         u32 head;
 133 } __packed;
 134
 135 struct wil6210_mbox_ring_desc {
 136         __le32 sync;
 137         __le32 addr;
 138 } __packed;
 139
 140 /* at HOST_OFF_WIL6210_MBOX_CTL */
 141 struct wil6210_mbox_ctl {
 142         struct wil6210_mbox_ring tx;
 143         struct wil6210_mbox_ring rx;
 144 } __packed;
 145
 146 struct wil6210_mbox_hdr {
 147         __le16 seq;
 148         __le16 len; /* payload, bytes after this header */
 149         __le16 type;
 150         u8 flags;
 151         u8 reserved;
 152 } __packed;
 153
 154 #define WIL_MBOX_HDR_TYPE_WMI (0)
 155
 156 /* max. value for wil6210_mbox_hdr.len */
 157 #define MAX_MBOXITEM_SIZE   (240)
 158
 159 struct wil6210_mbox_hdr_wmi {
 160         u8 reserved0[2];
 161         __le16 id;
 162         __le16 info1; /* bits [0..3] - device_id, rest - unused */
 163         u8 reserved1[2];
 164 } __packed;
 165
 166 struct pending_wmi_event {
 167         struct list_head list;
 168         struct {
 169                 struct wil6210_mbox_hdr hdr;
 170                 struct wil6210_mbox_hdr_wmi wmi;
 171                 u8 data[0];
 172         } __packed event;
 173 };
 174
 175 union vring_desc;
 176
 177 struct vring {
 178         dma_addr_t pa;
 179         volatile union vring_desc *va; /* vring_desc[size], WriteBack by DMA */
 180         u16 size; /* number of vring_desc elements */
 181         u32 swtail;
 182         u32 swhead;
 183         u32 hwtail; /* write here to inform hw */
 184         void **ctx; /* void *ctx[size] - software context */
 185 };
 186
 187 enum { /* for wil6210_priv.status */
 188         wil_status_fwready = 0,
 189         wil_status_fwconnecting,
 190         wil_status_fwconnected,
 191         wil_status_dontscan,
 192         wil_status_reset_done,
 193         wil_status_irqen, /* FIXME: interrupts enabled - for debug */
 194 };
 195
 196 struct pci_dev;
 197
 198 struct wil6210_stats {
 199         u64 tsf;
 200         u32 snr;
 201         u16 last_mcs_rx;
 202         u16 bf_mcs; /* last BF, used for Tx */
 203         u16 my_rx_sector;
 204         u16 my_tx_sector;
 205         u16 peer_rx_sector;
 206         u16 peer_tx_sector;
 207 };
 208
 209 struct wil6210_priv {
 210         struct pci_dev *pdev;
 211         int n_msi;
 212         struct wireless_dev *wdev;
 213         void __iomem *csr;
 214         ulong status;
 215         u32 fw_version;
 216         u8 n_mids; /* number of additional MIDs as reported by FW */
 217         /* profile */
 218         u32 monitor_flags;
 219         u32 secure_pcp; /* create secure PCP? */
 220         int sinfo_gen;
 221         /* cached ISR registers */
 222         u32 isr_misc;
 223         /* mailbox related */
 224         struct mutex wmi_mutex;
 225         struct wil6210_mbox_ctl mbox_ctl;
 226         struct completion wmi_ready;
 227         u16 wmi_seq;
 228         u16 reply_id; /**< wait for this WMI event */
 229         void *reply_buf;
 230         u16 reply_size;
 231         struct workqueue_struct *wmi_wq; /* for deferred calls */
 232         struct work_struct wmi_event_worker;
 233         struct workqueue_struct *wmi_wq_conn; /* for connect worker */
 234         struct work_struct connect_worker;
 235         struct work_struct disconnect_worker;
 236         struct timer_list connect_timer;
 237         int pending_connect_cid;
 238         struct list_head pending_wmi_ev;
 239         /*
 240          * protect pending_wmi_ev
 241          * - fill in IRQ from wil6210_irq_misc,
 242          * - consumed in thread by wmi_event_worker
 243          */
 244         spinlock_t wmi_ev_lock;
 245         struct napi_struct napi_rx;
 246         struct napi_struct napi_tx;
 247         /* DMA related */
 248         struct vring vring_rx;
 249         struct vring vring_tx[WIL6210_MAX_TX_RINGS];
 250         u8 dst_addr[WIL6210_MAX_TX_RINGS][ETH_ALEN];
 251         /* scan */
 252         struct cfg80211_scan_request *scan_request;
 253
 254         struct mutex mutex; /* for wil6210_priv access in wil_{up|down} */
 255         /* statistics */
 256         struct wil6210_stats stats;
 257         /* debugfs */
 258         struct dentry *debug;
 259         struct debugfs_blob_wrapper fw_code_blob;
 260         struct debugfs_blob_wrapper fw_data_blob;
 261         struct debugfs_blob_wrapper fw_peri_blob;
 262         struct debugfs_blob_wrapper uc_code_blob;
 263         struct debugfs_blob_wrapper uc_data_blob;
 264         struct debugfs_blob_wrapper rgf_blob;
 265 };
 266
 267 #define wil_to_wiphy(i) (i->wdev->wiphy)
 268 #define wil_to_dev(i) (wiphy_dev(wil_to_wiphy(i)))
 269 #define wiphy_to_wil(w) (struct wil6210_priv *)(wiphy_priv(w))
 270 #define wil_to_wdev(i) (i->wdev)
 271 #define wdev_to_wil(w) (struct wil6210_priv *)(wdev_priv(w))
 272 #define wil_to_ndev(i) (wil_to_wdev(i)->netdev)
 273 #define ndev_to_wil(n) (wdev_to_wil(n->ieee80211_ptr))
 274
 275 int wil_dbg_trace(struct wil6210_priv *wil, const char *fmt, ...);
 276 int wil_err(struct wil6210_priv *wil, const char *fmt, ...);
 277 int wil_info(struct wil6210_priv *wil, const char *fmt, ...);
 278 #define wil_dbg(wil, fmt, arg...) do { \
 279         netdev_dbg(wil_to_ndev(wil), fmt, ##arg); \
 280         wil_dbg_trace(wil, fmt, ##arg); \
 281 } while (0)
 282
 283 #define wil_dbg_irq(wil, fmt, arg...) wil_dbg(wil, "DBG[ IRQ]" fmt, ##arg)
 284 #define wil_dbg_txrx(wil, fmt, arg...) wil_dbg(wil, "DBG[TXRX]" fmt, ##arg)
 285 #define wil_dbg_wmi(wil, fmt, arg...) wil_dbg(wil, "DBG[ WMI]" fmt, ##arg)
 286 #define wil_dbg_misc(wil, fmt, arg...) wil_dbg(wil, "DBG[MISC]" fmt, ##arg)
 287
 288 #define wil_hex_dump_txrx(prefix_str, prefix_type, rowsize,     \
 289                           groupsize, buf, len, ascii)           \
 290                           print_hex_dump_debug("DBG[TXRX]" prefix_str,\
 291                                          prefix_type, rowsize,  \
 292                                          groupsize, buf, len, ascii)
 293
 294 #define wil_hex_dump_wmi(prefix_str, prefix_type, rowsize,      \
 295                          groupsize, buf, len, ascii)            \
 296                          print_hex_dump_debug("DBG[ WMI]" prefix_str,\
 297                                         prefix_type, rowsize,   \
 298                                         groupsize, buf, len, ascii)
 299
 300 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src,
 301                           size_t count);
 302 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
 303                         size_t count);
 304
 305 void *wil_if_alloc(struct device *dev, void __iomem *csr);
 306 void wil_if_free(struct wil6210_priv *wil);
 307 int wil_if_add(struct wil6210_priv *wil);
 308 void wil_if_remove(struct wil6210_priv *wil);
 309 int wil_priv_init(struct wil6210_priv *wil);
 310 void wil_priv_deinit(struct wil6210_priv *wil);
 311 int wil_reset(struct wil6210_priv *wil);
 312 void wil_link_on(struct wil6210_priv *wil);
 313 void wil_link_off(struct wil6210_priv *wil);
 314 int wil_up(struct wil6210_priv *wil);
 315 int wil_down(struct wil6210_priv *wil);
 316 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r);
 317
 318 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr);
 319 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr);
 320 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
 321                  struct wil6210_mbox_hdr *hdr);
 322 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len);
 323 void wmi_recv_cmd(struct wil6210_priv *wil);
 324 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
 325              u16 reply_id, void *reply, u8 reply_size, int to_msec);
 326 void wmi_event_worker(struct work_struct *work);
 327 void wmi_event_flush(struct wil6210_priv *wil);
 328 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid);
 329 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid);
 330 int wmi_set_channel(struct wil6210_priv *wil, int channel);
 331 int wmi_get_channel(struct wil6210_priv *wil, int *channel);
 332 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
 333                        const void *mac_addr);
 334 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
 335                        const void *mac_addr, int key_len, const void *key);
 336 int wmi_echo(struct wil6210_priv *wil);
 337 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie);
 338 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring);
 339 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel);
 340 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r);
 341
 342 int wil6210_init_irq(struct wil6210_priv *wil, int irq);
 343 void wil6210_fini_irq(struct wil6210_priv *wil, int irq);
 344 void wil6210_disable_irq(struct wil6210_priv *wil);
 345 void wil6210_enable_irq(struct wil6210_priv *wil);
 346
 347 int wil6210_debugfs_init(struct wil6210_priv *wil);
 348 void wil6210_debugfs_remove(struct wil6210_priv *wil);
 349
 350 struct wireless_dev *wil_cfg80211_init(struct device *dev);
 351 void wil_wdev_free(struct wil6210_priv *wil);
 352
 353 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr);
 354 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan);
 355 int wmi_pcp_stop(struct wil6210_priv *wil);
 356 void wil6210_disconnect(struct wil6210_priv *wil, void *bssid);
 357
 358 int wil_rx_init(struct wil6210_priv *wil);
 359 void wil_rx_fini(struct wil6210_priv *wil);
 360
 361 /* TX API */
 362 int wil_vring_init_tx(struct wil6210_priv *wil, int id, int size,
 363                       int cid, int tid);
 364 void wil_vring_fini_tx(struct wil6210_priv *wil, int id);
 365
 366 netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev);
 367 int wil_tx_complete(struct wil6210_priv *wil, int ringid);
 368 void wil6210_unmask_irq_tx(struct wil6210_priv *wil);
 369
 370 /* RX API */
 371 void wil_rx_handle(struct wil6210_priv *wil, int *quota);
 372 void wil6210_unmask_irq_rx(struct wil6210_priv *wil);
 373
 374 int wil_iftype_nl2wmi(enum nl80211_iftype type);
 375
 376 #endif /* __WIL6210_H__ */