1 // SPDX-License-Identifier: GPL-2.0
3 * Wireless Host Controller (WHC) private header.
5 * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version
9 * 2 as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
24 #include <linux/uwb/whci.h>
25 #include <linux/uwb/umc.h>
26 #include <linux/workqueue.h>
30 /* Generic command timeout. */
31 #define WHC_GENCMD_TIMEOUT_MS 100
39 resource_size_t base_phys;
48 struct dn_buf_entry *dn_buf;
49 struct di_buf_entry *di_buf;
50 dma_addr_t pz_list_dma;
51 dma_addr_t dn_buf_dma;
52 dma_addr_t di_buf_dma;
58 dma_addr_t gen_cmd_buf_dma;
59 wait_queue_head_t cmd_wq;
61 struct workqueue_struct *workqueue;
62 struct work_struct dn_work;
64 struct dma_pool *qset_pool;
66 struct list_head async_list;
67 struct list_head async_removed_list;
68 wait_queue_head_t async_list_wq;
69 struct work_struct async_work;
71 struct list_head periodic_list[5];
72 struct list_head periodic_removed_list;
73 wait_queue_head_t periodic_list_wq;
74 struct work_struct periodic_work;
79 #define wusbhc_to_whc(w) (container_of((w), struct whc, wusbhc))
82 * struct whc_std - a software TD.
83 * @urb: the URB this sTD is for.
84 * @offset: start of the URB's data for this TD.
85 * @len: the length of data in the associated TD.
86 * @ntds_remaining: number of TDs (starting from this one) in this transfer.
88 * @bounce_buf: a bounce buffer if the std was from an urb with a sg
89 * list that could not be mapped to qTDs directly.
90 * @bounce_sg: the first scatterlist element bounce_buf is for.
91 * @bounce_offset: the offset into bounce_sg for the start of bounce_buf.
93 * Queued URBs may require more TDs than are available in a qset so we
94 * use a list of these "software TDs" (sTDs) to hold per-TD data.
102 struct list_head list_node;
105 struct whc_page_list_entry *pl_virt;
108 struct scatterlist *bounce_sg;
109 unsigned bounce_offset;
113 * struct whc_urb - per URB host controller structure.
114 * @urb: the URB this struct is for.
115 * @qset: the qset associated to the URB.
116 * @dequeue_work: the work to remove the URB when dequeued.
117 * @is_async: the URB belongs to async sheduler or not.
118 * @status: the status to be returned when calling wusbhc_giveback_urb.
122 struct whc_qset *qset;
123 struct work_struct dequeue_work;
129 * whc_std_last - is this sTD the URB's last?
130 * @std: the sTD to check.
132 static inline bool whc_std_last(struct whc_std *std)
134 return std->ntds_remaining <= 1;
138 WHC_UPDATE_ADDED = 0x01,
139 WHC_UPDATE_REMOVED = 0x02,
140 WHC_UPDATE_UPDATED = 0x04,
144 int whc_init(struct whc *whc);
145 void whc_clean_up(struct whc *whc);
148 void whc_write_wusbcmd(struct whc *whc, u32 mask, u32 val);
149 int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len);
150 void whc_hw_error(struct whc *whc, const char *reason);
153 int whc_wusbhc_start(struct wusbhc *wusbhc);
154 void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay);
155 int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
156 u8 handle, struct wuie_hdr *wuie);
157 int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle);
158 int whc_bwa_set(struct wusbhc *wusbhc, s8 stream_index, const struct uwb_mas_bm *mas_bm);
159 int whc_dev_info_set(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev);
160 int whc_set_num_dnts(struct wusbhc *wusbhc, u8 interval, u8 slots);
161 int whc_set_ptk(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
162 const void *ptk, size_t key_size);
163 int whc_set_gtk(struct wusbhc *wusbhc, u32 tkid,
164 const void *gtk, size_t key_size);
165 int whc_set_cluster_id(struct whc *whc, u8 bcid);
168 irqreturn_t whc_int_handler(struct usb_hcd *hcd);
169 void whc_dn_work(struct work_struct *work);
172 void asl_start(struct whc *whc);
173 void asl_stop(struct whc *whc);
174 int asl_init(struct whc *whc);
175 void asl_clean_up(struct whc *whc);
176 int asl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags);
177 int asl_urb_dequeue(struct whc *whc, struct urb *urb, int status);
178 void asl_qset_delete(struct whc *whc, struct whc_qset *qset);
179 void scan_async_work(struct work_struct *work);
182 int pzl_init(struct whc *whc);
183 void pzl_clean_up(struct whc *whc);
184 void pzl_start(struct whc *whc);
185 void pzl_stop(struct whc *whc);
186 int pzl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags);
187 int pzl_urb_dequeue(struct whc *whc, struct urb *urb, int status);
188 void pzl_qset_delete(struct whc *whc, struct whc_qset *qset);
189 void scan_periodic_work(struct work_struct *work);
192 struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags);
193 void qset_free(struct whc *whc, struct whc_qset *qset);
194 struct whc_qset *get_qset(struct whc *whc, struct urb *urb, gfp_t mem_flags);
195 void qset_delete(struct whc *whc, struct whc_qset *qset);
196 void qset_clear(struct whc *whc, struct whc_qset *qset);
197 void qset_reset(struct whc *whc, struct whc_qset *qset);
198 int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb,
200 void qset_free_std(struct whc *whc, struct whc_std *std);
201 void qset_remove_urb(struct whc *whc, struct whc_qset *qset,
202 struct urb *urb, int status);
203 void process_halted_qtd(struct whc *whc, struct whc_qset *qset,
204 struct whc_qtd *qtd);
205 void process_inactive_qtd(struct whc *whc, struct whc_qset *qset,
206 struct whc_qtd *qtd);
207 enum whc_update qset_add_qtds(struct whc *whc, struct whc_qset *qset);
208 void qset_remove_complete(struct whc *whc, struct whc_qset *qset);
209 void pzl_update(struct whc *whc, uint32_t wusbcmd);
210 void asl_update(struct whc *whc, uint32_t wusbcmd);
213 void whc_dbg_init(struct whc *whc);
214 void whc_dbg_clean_up(struct whc *whc);
216 #endif /* #ifndef __WHCD_H */