15 void brcmf_commonring_register_cb(struct brcmf_commonring *commonring,  in brcmf_commonring_register_cb()  argument
22 	commonring->cr_ring_bell = cr_ring_bell;  in brcmf_commonring_register_cb()
23 	commonring->cr_update_rptr = cr_update_rptr;  in brcmf_commonring_register_cb()
24 	commonring->cr_update_wptr = cr_update_wptr;  in brcmf_commonring_register_cb()
25 	commonring->cr_write_rptr = cr_write_rptr;  in brcmf_commonring_register_cb()
26 	commonring->cr_write_wptr = cr_write_wptr;  in brcmf_commonring_register_cb()
27 	commonring->cr_ctx = ctx;  in brcmf_commonring_register_cb()
31 void brcmf_commonring_config(struct brcmf_commonring *commonring, u16 depth,  in brcmf_commonring_config()  argument
34 	commonring->depth = depth;  in brcmf_commonring_config()
35 	commonring->item_len = item_len;  in brcmf_commonring_config()
36 	commonring->buf_addr = buf_addr;  in brcmf_commonring_config()
37 	if (!commonring->inited) {  in brcmf_commonring_config()
38 		spin_lock_init(&commonring->lock);  in brcmf_commonring_config()
39 		commonring->inited = true;  in brcmf_commonring_config()
41 	commonring->r_ptr = 0;  in brcmf_commonring_config()
42 	if (commonring->cr_write_rptr)  in brcmf_commonring_config()
43 		commonring->cr_write_rptr(commonring->cr_ctx);  in brcmf_commonring_config()
44 	commonring->w_ptr = 0;  in brcmf_commonring_config()
45 	if (commonring->cr_write_wptr)  in brcmf_commonring_config()
46 		commonring->cr_write_wptr(commonring->cr_ctx);  in brcmf_commonring_config()
47 	commonring->f_ptr = 0;  in brcmf_commonring_config()
51 void brcmf_commonring_lock(struct brcmf_commonring *commonring)  in brcmf_commonring_lock()  argument
52 		__acquires(&commonring->lock)  in brcmf_commonring_lock()
56 	spin_lock_irqsave(&commonring->lock, flags);  in brcmf_commonring_lock()
57 	commonring->flags = flags;  in brcmf_commonring_lock()
61 void brcmf_commonring_unlock(struct brcmf_commonring *commonring)  in brcmf_commonring_unlock()  argument
62 		__releases(&commonring->lock)  in brcmf_commonring_unlock()
64 	spin_unlock_irqrestore(&commonring->lock, commonring->flags);  in brcmf_commonring_unlock()
68 bool brcmf_commonring_write_available(struct brcmf_commonring *commonring)  in brcmf_commonring_write_available()  argument
74 	if (commonring->r_ptr <= commonring->w_ptr)  in brcmf_commonring_write_available()
75 		available = commonring->depth - commonring->w_ptr +  in brcmf_commonring_write_available()
76 			    commonring->r_ptr;  in brcmf_commonring_write_available()
78 		available = commonring->r_ptr - commonring->w_ptr;  in brcmf_commonring_write_available()
81 		if (!commonring->was_full)  in brcmf_commonring_write_available()
83 		if (available > commonring->depth / 8) {  in brcmf_commonring_write_available()
84 			commonring->was_full = false;  in brcmf_commonring_write_available()
88 			if (commonring->cr_update_rptr)  in brcmf_commonring_write_available()
89 				commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_write_available()
97 		if (commonring->cr_update_rptr)  in brcmf_commonring_write_available()
98 			commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_write_available()
103 	commonring->was_full = true;  in brcmf_commonring_write_available()
108 void *brcmf_commonring_reserve_for_write(struct brcmf_commonring *commonring)  in brcmf_commonring_reserve_for_write()  argument
115 	if (commonring->r_ptr <= commonring->w_ptr)  in brcmf_commonring_reserve_for_write()
116 		available = commonring->depth - commonring->w_ptr +  in brcmf_commonring_reserve_for_write()
117 			    commonring->r_ptr;  in brcmf_commonring_reserve_for_write()
119 		available = commonring->r_ptr - commonring->w_ptr;  in brcmf_commonring_reserve_for_write()
122 		ret_ptr = commonring->buf_addr +  in brcmf_commonring_reserve_for_write()
123 			  (commonring->w_ptr * commonring->item_len);  in brcmf_commonring_reserve_for_write()
124 		commonring->w_ptr++;  in brcmf_commonring_reserve_for_write()
125 		if (commonring->w_ptr == commonring->depth)  in brcmf_commonring_reserve_for_write()
126 			commonring->w_ptr = 0;  in brcmf_commonring_reserve_for_write()
131 		if (commonring->cr_update_rptr)  in brcmf_commonring_reserve_for_write()
132 			commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_reserve_for_write()
137 	commonring->was_full = true;  in brcmf_commonring_reserve_for_write()
143 brcmf_commonring_reserve_for_write_multiple(struct brcmf_commonring *commonring,  in brcmf_commonring_reserve_for_write_multiple()  argument
151 	if (commonring->r_ptr <= commonring->w_ptr)  in brcmf_commonring_reserve_for_write_multiple()
152 		available = commonring->depth - commonring->w_ptr +  in brcmf_commonring_reserve_for_write_multiple()
153 			    commonring->r_ptr;  in brcmf_commonring_reserve_for_write_multiple()
155 		available = commonring->r_ptr - commonring->w_ptr;  in brcmf_commonring_reserve_for_write_multiple()
158 		ret_ptr = commonring->buf_addr +  in brcmf_commonring_reserve_for_write_multiple()
159 			  (commonring->w_ptr * commonring->item_len);  in brcmf_commonring_reserve_for_write_multiple()
161 		if (*alloced + commonring->w_ptr > commonring->depth)  in brcmf_commonring_reserve_for_write_multiple()
162 			*alloced = commonring->depth - commonring->w_ptr;  in brcmf_commonring_reserve_for_write_multiple()
163 		commonring->w_ptr += *alloced;  in brcmf_commonring_reserve_for_write_multiple()
164 		if (commonring->w_ptr == commonring->depth)  in brcmf_commonring_reserve_for_write_multiple()
165 			commonring->w_ptr = 0;  in brcmf_commonring_reserve_for_write_multiple()
170 		if (commonring->cr_update_rptr)  in brcmf_commonring_reserve_for_write_multiple()
171 			commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_reserve_for_write_multiple()
176 	commonring->was_full = true;  in brcmf_commonring_reserve_for_write_multiple()
181 int brcmf_commonring_write_complete(struct brcmf_commonring *commonring)  in brcmf_commonring_write_complete()  argument
183 	if (commonring->f_ptr > commonring->w_ptr)  in brcmf_commonring_write_complete()
184 		commonring->f_ptr = 0;  in brcmf_commonring_write_complete()
186 	commonring->f_ptr = commonring->w_ptr;  in brcmf_commonring_write_complete()
188 	if (commonring->cr_write_wptr)  in brcmf_commonring_write_complete()
189 		commonring->cr_write_wptr(commonring->cr_ctx);  in brcmf_commonring_write_complete()
190 	if (commonring->cr_ring_bell)  in brcmf_commonring_write_complete()
191 		return commonring->cr_ring_bell(commonring->cr_ctx);  in brcmf_commonring_write_complete()
197 void brcmf_commonring_write_cancel(struct brcmf_commonring *commonring,  in brcmf_commonring_write_cancel()  argument
200 	if (commonring->w_ptr == 0)  in brcmf_commonring_write_cancel()
201 		commonring->w_ptr = commonring->depth - n_items;  in brcmf_commonring_write_cancel()
203 		commonring->w_ptr -= n_items;  in brcmf_commonring_write_cancel()
207 void *brcmf_commonring_get_read_ptr(struct brcmf_commonring *commonring,  in brcmf_commonring_get_read_ptr()  argument
210 	if (commonring->cr_update_wptr)  in brcmf_commonring_get_read_ptr()
211 		commonring->cr_update_wptr(commonring->cr_ctx);  in brcmf_commonring_get_read_ptr()
213 	*n_items = (commonring->w_ptr >= commonring->r_ptr) ?  in brcmf_commonring_get_read_ptr()
214 				(commonring->w_ptr - commonring->r_ptr) :  in brcmf_commonring_get_read_ptr()
215 				(commonring->depth - commonring->r_ptr);  in brcmf_commonring_get_read_ptr()
220 	return commonring->buf_addr +  in brcmf_commonring_get_read_ptr()
221 	       (commonring->r_ptr * commonring->item_len);  in brcmf_commonring_get_read_ptr()
225 int brcmf_commonring_read_complete(struct brcmf_commonring *commonring,  in brcmf_commonring_read_complete()  argument
228 	commonring->r_ptr += n_items;  in brcmf_commonring_read_complete()
229 	if (commonring->r_ptr == commonring->depth)  in brcmf_commonring_read_complete()
230 		commonring->r_ptr = 0;  in brcmf_commonring_read_complete()
232 	if (commonring->cr_write_rptr)  in brcmf_commonring_read_complete()
233 		return commonring->cr_write_rptr(commonring->cr_ctx);  in brcmf_commonring_read_complete()