25 void brcmf_commonring_register_cb(struct brcmf_commonring *commonring,  in brcmf_commonring_register_cb()  argument
32 	commonring->cr_ring_bell = cr_ring_bell;  in brcmf_commonring_register_cb()
33 	commonring->cr_update_rptr = cr_update_rptr;  in brcmf_commonring_register_cb()
34 	commonring->cr_update_wptr = cr_update_wptr;  in brcmf_commonring_register_cb()
35 	commonring->cr_write_rptr = cr_write_rptr;  in brcmf_commonring_register_cb()
36 	commonring->cr_write_wptr = cr_write_wptr;  in brcmf_commonring_register_cb()
37 	commonring->cr_ctx = ctx;  in brcmf_commonring_register_cb()
41 void brcmf_commonring_config(struct brcmf_commonring *commonring, u16 depth,  in brcmf_commonring_config()  argument
44 	commonring->depth = depth;  in brcmf_commonring_config()
45 	commonring->item_len = item_len;  in brcmf_commonring_config()
46 	commonring->buf_addr = buf_addr;  in brcmf_commonring_config()
47 	if (!commonring->inited) {  in brcmf_commonring_config()
48 		spin_lock_init(&commonring->lock);  in brcmf_commonring_config()
49 		commonring->inited = true;  in brcmf_commonring_config()
51 	commonring->r_ptr = 0;  in brcmf_commonring_config()
52 	if (commonring->cr_write_rptr)  in brcmf_commonring_config()
53 		commonring->cr_write_rptr(commonring->cr_ctx);  in brcmf_commonring_config()
54 	commonring->w_ptr = 0;  in brcmf_commonring_config()
55 	if (commonring->cr_write_wptr)  in brcmf_commonring_config()
56 		commonring->cr_write_wptr(commonring->cr_ctx);  in brcmf_commonring_config()
57 	commonring->f_ptr = 0;  in brcmf_commonring_config()
61 void brcmf_commonring_lock(struct brcmf_commonring *commonring)  in brcmf_commonring_lock()  argument
62 		__acquires(&commonring->lock)  in brcmf_commonring_lock()
66 	spin_lock_irqsave(&commonring->lock, flags);  in brcmf_commonring_lock()
67 	commonring->flags = flags;  in brcmf_commonring_lock()
71 void brcmf_commonring_unlock(struct brcmf_commonring *commonring)  in brcmf_commonring_unlock()  argument
72 		__releases(&commonring->lock)  in brcmf_commonring_unlock()
74 	spin_unlock_irqrestore(&commonring->lock, commonring->flags);  in brcmf_commonring_unlock()
78 bool brcmf_commonring_write_available(struct brcmf_commonring *commonring)  in brcmf_commonring_write_available()  argument
84 	if (commonring->r_ptr <= commonring->w_ptr)  in brcmf_commonring_write_available()
85 		available = commonring->depth - commonring->w_ptr +  in brcmf_commonring_write_available()
86 			    commonring->r_ptr;  in brcmf_commonring_write_available()
88 		available = commonring->r_ptr - commonring->w_ptr;  in brcmf_commonring_write_available()
91 		if (!commonring->was_full)  in brcmf_commonring_write_available()
93 		if (available > commonring->depth / 8) {  in brcmf_commonring_write_available()
94 			commonring->was_full = false;  in brcmf_commonring_write_available()
98 			if (commonring->cr_update_rptr)  in brcmf_commonring_write_available()
99 				commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_write_available()
107 		if (commonring->cr_update_rptr)  in brcmf_commonring_write_available()
108 			commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_write_available()
113 	commonring->was_full = true;  in brcmf_commonring_write_available()
118 void *brcmf_commonring_reserve_for_write(struct brcmf_commonring *commonring)  in brcmf_commonring_reserve_for_write()  argument
125 	if (commonring->r_ptr <= commonring->w_ptr)  in brcmf_commonring_reserve_for_write()
126 		available = commonring->depth - commonring->w_ptr +  in brcmf_commonring_reserve_for_write()
127 			    commonring->r_ptr;  in brcmf_commonring_reserve_for_write()
129 		available = commonring->r_ptr - commonring->w_ptr;  in brcmf_commonring_reserve_for_write()
132 		ret_ptr = commonring->buf_addr +  in brcmf_commonring_reserve_for_write()
133 			  (commonring->w_ptr * commonring->item_len);  in brcmf_commonring_reserve_for_write()
134 		commonring->w_ptr++;  in brcmf_commonring_reserve_for_write()
135 		if (commonring->w_ptr == commonring->depth)  in brcmf_commonring_reserve_for_write()
136 			commonring->w_ptr = 0;  in brcmf_commonring_reserve_for_write()
141 		if (commonring->cr_update_rptr)  in brcmf_commonring_reserve_for_write()
142 			commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_reserve_for_write()
147 	commonring->was_full = true;  in brcmf_commonring_reserve_for_write()
153 brcmf_commonring_reserve_for_write_multiple(struct brcmf_commonring *commonring,  in brcmf_commonring_reserve_for_write_multiple()  argument
161 	if (commonring->r_ptr <= commonring->w_ptr)  in brcmf_commonring_reserve_for_write_multiple()
162 		available = commonring->depth - commonring->w_ptr +  in brcmf_commonring_reserve_for_write_multiple()
163 			    commonring->r_ptr;  in brcmf_commonring_reserve_for_write_multiple()
165 		available = commonring->r_ptr - commonring->w_ptr;  in brcmf_commonring_reserve_for_write_multiple()
168 		ret_ptr = commonring->buf_addr +  in brcmf_commonring_reserve_for_write_multiple()
169 			  (commonring->w_ptr * commonring->item_len);  in brcmf_commonring_reserve_for_write_multiple()
171 		if (*alloced + commonring->w_ptr > commonring->depth)  in brcmf_commonring_reserve_for_write_multiple()
172 			*alloced = commonring->depth - commonring->w_ptr;  in brcmf_commonring_reserve_for_write_multiple()
173 		commonring->w_ptr += *alloced;  in brcmf_commonring_reserve_for_write_multiple()
174 		if (commonring->w_ptr == commonring->depth)  in brcmf_commonring_reserve_for_write_multiple()
175 			commonring->w_ptr = 0;  in brcmf_commonring_reserve_for_write_multiple()
180 		if (commonring->cr_update_rptr)  in brcmf_commonring_reserve_for_write_multiple()
181 			commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_reserve_for_write_multiple()
186 	commonring->was_full = true;  in brcmf_commonring_reserve_for_write_multiple()
191 int brcmf_commonring_write_complete(struct brcmf_commonring *commonring)  in brcmf_commonring_write_complete()  argument
195 	address = commonring->buf_addr;  in brcmf_commonring_write_complete()
196 	address += (commonring->f_ptr * commonring->item_len);  in brcmf_commonring_write_complete()
197 	if (commonring->f_ptr > commonring->w_ptr) {  in brcmf_commonring_write_complete()
198 		address = commonring->buf_addr;  in brcmf_commonring_write_complete()
199 		commonring->f_ptr = 0;  in brcmf_commonring_write_complete()
202 	commonring->f_ptr = commonring->w_ptr;  in brcmf_commonring_write_complete()
204 	if (commonring->cr_write_wptr)  in brcmf_commonring_write_complete()
205 		commonring->cr_write_wptr(commonring->cr_ctx);  in brcmf_commonring_write_complete()
206 	if (commonring->cr_ring_bell)  in brcmf_commonring_write_complete()
207 		return commonring->cr_ring_bell(commonring->cr_ctx);  in brcmf_commonring_write_complete()
213 void brcmf_commonring_write_cancel(struct brcmf_commonring *commonring,  in brcmf_commonring_write_cancel()  argument
216 	if (commonring->w_ptr == 0)  in brcmf_commonring_write_cancel()
217 		commonring->w_ptr = commonring->depth - n_items;  in brcmf_commonring_write_cancel()
219 		commonring->w_ptr -= n_items;  in brcmf_commonring_write_cancel()
223 void *brcmf_commonring_get_read_ptr(struct brcmf_commonring *commonring,  in brcmf_commonring_get_read_ptr()  argument
226 	if (commonring->cr_update_wptr)  in brcmf_commonring_get_read_ptr()
227 		commonring->cr_update_wptr(commonring->cr_ctx);  in brcmf_commonring_get_read_ptr()
229 	*n_items = (commonring->w_ptr >= commonring->r_ptr) ?  in brcmf_commonring_get_read_ptr()
230 				(commonring->w_ptr - commonring->r_ptr) :  in brcmf_commonring_get_read_ptr()
231 				(commonring->depth - commonring->r_ptr);  in brcmf_commonring_get_read_ptr()
236 	return commonring->buf_addr +  in brcmf_commonring_get_read_ptr()
237 	       (commonring->r_ptr * commonring->item_len);  in brcmf_commonring_get_read_ptr()
241 int brcmf_commonring_read_complete(struct brcmf_commonring *commonring,  in brcmf_commonring_read_complete()  argument
244 	commonring->r_ptr += n_items;  in brcmf_commonring_read_complete()
245 	if (commonring->r_ptr == commonring->depth)  in brcmf_commonring_read_complete()
246 		commonring->r_ptr = 0;  in brcmf_commonring_read_complete()
248 	if (commonring->cr_write_rptr)  in brcmf_commonring_read_complete()
249 		return commonring->cr_write_rptr(commonring->cr_ctx);  in brcmf_commonring_read_complete()