36 void brcmf_commonring_register_cb(struct brcmf_commonring *commonring,  in brcmf_commonring_register_cb()  argument
43 	commonring->cr_ring_bell = cr_ring_bell;  in brcmf_commonring_register_cb()
44 	commonring->cr_update_rptr = cr_update_rptr;  in brcmf_commonring_register_cb()
45 	commonring->cr_update_wptr = cr_update_wptr;  in brcmf_commonring_register_cb()
46 	commonring->cr_write_rptr = cr_write_rptr;  in brcmf_commonring_register_cb()
47 	commonring->cr_write_wptr = cr_write_wptr;  in brcmf_commonring_register_cb()
48 	commonring->cr_ctx = ctx;  in brcmf_commonring_register_cb()
52 void brcmf_commonring_config(struct brcmf_commonring *commonring, u16 depth,  in brcmf_commonring_config()  argument
55 	commonring->depth = depth;  in brcmf_commonring_config()
56 	commonring->item_len = item_len;  in brcmf_commonring_config()
57 	commonring->buf_addr = buf_addr;  in brcmf_commonring_config()
58 	if (!commonring->inited) {  in brcmf_commonring_config()
59 		spin_lock_init(&commonring->lock);  in brcmf_commonring_config()
60 		commonring->inited = true;  in brcmf_commonring_config()
62 	commonring->r_ptr = 0;  in brcmf_commonring_config()
63 	if (commonring->cr_write_rptr)  in brcmf_commonring_config()
64 		commonring->cr_write_rptr(commonring->cr_ctx);  in brcmf_commonring_config()
65 	commonring->w_ptr = 0;  in brcmf_commonring_config()
66 	if (commonring->cr_write_wptr)  in brcmf_commonring_config()
67 		commonring->cr_write_wptr(commonring->cr_ctx);  in brcmf_commonring_config()
68 	commonring->f_ptr = 0;  in brcmf_commonring_config()
72 void brcmf_commonring_lock(struct brcmf_commonring *commonring)  in brcmf_commonring_lock()  argument
73 		__acquires(&commonring->lock)  in brcmf_commonring_lock()
77 	spin_lock_irqsave(&commonring->lock, flags);  in brcmf_commonring_lock()
78 	commonring->flags = flags;  in brcmf_commonring_lock()
82 void brcmf_commonring_unlock(struct brcmf_commonring *commonring)  in brcmf_commonring_unlock()  argument
83 		__releases(&commonring->lock)  in brcmf_commonring_unlock()
85 	spin_unlock_irqrestore(&commonring->lock, commonring->flags);  in brcmf_commonring_unlock()
89 bool brcmf_commonring_write_available(struct brcmf_commonring *commonring)  in brcmf_commonring_write_available()  argument
95 	if (commonring->r_ptr <= commonring->w_ptr)  in brcmf_commonring_write_available()
96 		available = commonring->depth - commonring->w_ptr +  in brcmf_commonring_write_available()
97 			    commonring->r_ptr;  in brcmf_commonring_write_available()
99 		available = commonring->r_ptr - commonring->w_ptr;  in brcmf_commonring_write_available()
102 		if (!commonring->was_full)  in brcmf_commonring_write_available()
104 		if (available > commonring->depth / 8) {  in brcmf_commonring_write_available()
105 			commonring->was_full = false;  in brcmf_commonring_write_available()
109 			if (commonring->cr_update_rptr)  in brcmf_commonring_write_available()
110 				commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_write_available()
118 		if (commonring->cr_update_rptr)  in brcmf_commonring_write_available()
119 			commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_write_available()
124 	commonring->was_full = true;  in brcmf_commonring_write_available()
129 void *brcmf_commonring_reserve_for_write(struct brcmf_commonring *commonring)  in brcmf_commonring_reserve_for_write()  argument
136 	if (commonring->r_ptr <= commonring->w_ptr)  in brcmf_commonring_reserve_for_write()
137 		available = commonring->depth - commonring->w_ptr +  in brcmf_commonring_reserve_for_write()
138 			    commonring->r_ptr;  in brcmf_commonring_reserve_for_write()
140 		available = commonring->r_ptr - commonring->w_ptr;  in brcmf_commonring_reserve_for_write()
143 		ret_ptr = commonring->buf_addr +  in brcmf_commonring_reserve_for_write()
144 			  (commonring->w_ptr * commonring->item_len);  in brcmf_commonring_reserve_for_write()
145 		commonring->w_ptr++;  in brcmf_commonring_reserve_for_write()
146 		if (commonring->w_ptr == commonring->depth)  in brcmf_commonring_reserve_for_write()
147 			commonring->w_ptr = 0;  in brcmf_commonring_reserve_for_write()
152 		if (commonring->cr_update_rptr)  in brcmf_commonring_reserve_for_write()
153 			commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_reserve_for_write()
158 	commonring->was_full = true;  in brcmf_commonring_reserve_for_write()
164 brcmf_commonring_reserve_for_write_multiple(struct brcmf_commonring *commonring,  in brcmf_commonring_reserve_for_write_multiple()  argument
172 	if (commonring->r_ptr <= commonring->w_ptr)  in brcmf_commonring_reserve_for_write_multiple()
173 		available = commonring->depth - commonring->w_ptr +  in brcmf_commonring_reserve_for_write_multiple()
174 			    commonring->r_ptr;  in brcmf_commonring_reserve_for_write_multiple()
176 		available = commonring->r_ptr - commonring->w_ptr;  in brcmf_commonring_reserve_for_write_multiple()
179 		ret_ptr = commonring->buf_addr +  in brcmf_commonring_reserve_for_write_multiple()
180 			  (commonring->w_ptr * commonring->item_len);  in brcmf_commonring_reserve_for_write_multiple()
182 		if (*alloced + commonring->w_ptr > commonring->depth)  in brcmf_commonring_reserve_for_write_multiple()
183 			*alloced = commonring->depth - commonring->w_ptr;  in brcmf_commonring_reserve_for_write_multiple()
184 		commonring->w_ptr += *alloced;  in brcmf_commonring_reserve_for_write_multiple()
185 		if (commonring->w_ptr == commonring->depth)  in brcmf_commonring_reserve_for_write_multiple()
186 			commonring->w_ptr = 0;  in brcmf_commonring_reserve_for_write_multiple()
191 		if (commonring->cr_update_rptr)  in brcmf_commonring_reserve_for_write_multiple()
192 			commonring->cr_update_rptr(commonring->cr_ctx);  in brcmf_commonring_reserve_for_write_multiple()
197 	commonring->was_full = true;  in brcmf_commonring_reserve_for_write_multiple()
202 int brcmf_commonring_write_complete(struct brcmf_commonring *commonring)  in brcmf_commonring_write_complete()  argument
206 	address = commonring->buf_addr;  in brcmf_commonring_write_complete()
207 	address += (commonring->f_ptr * commonring->item_len);  in brcmf_commonring_write_complete()
208 	if (commonring->f_ptr > commonring->w_ptr) {  in brcmf_commonring_write_complete()
210 				(commonring->depth - commonring->f_ptr) *  in brcmf_commonring_write_complete()
211 				commonring->item_len);  in brcmf_commonring_write_complete()
212 		address = commonring->buf_addr;  in brcmf_commonring_write_complete()
213 		commonring->f_ptr = 0;  in brcmf_commonring_write_complete()
215 	brcmf_dma_flush(address, (commonring->w_ptr - commonring->f_ptr) *  in brcmf_commonring_write_complete()
216 			commonring->item_len);  in brcmf_commonring_write_complete()
218 	commonring->f_ptr = commonring->w_ptr;  in brcmf_commonring_write_complete()
220 	if (commonring->cr_write_wptr)  in brcmf_commonring_write_complete()
221 		commonring->cr_write_wptr(commonring->cr_ctx);  in brcmf_commonring_write_complete()
222 	if (commonring->cr_ring_bell)  in brcmf_commonring_write_complete()
223 		return commonring->cr_ring_bell(commonring->cr_ctx);  in brcmf_commonring_write_complete()
229 void brcmf_commonring_write_cancel(struct brcmf_commonring *commonring,  in brcmf_commonring_write_cancel()  argument
232 	if (commonring->w_ptr == 0)  in brcmf_commonring_write_cancel()
233 		commonring->w_ptr = commonring->depth - n_items;  in brcmf_commonring_write_cancel()
235 		commonring->w_ptr -= n_items;  in brcmf_commonring_write_cancel()
239 void *brcmf_commonring_get_read_ptr(struct brcmf_commonring *commonring,  in brcmf_commonring_get_read_ptr()  argument
244 	if (commonring->cr_update_wptr)  in brcmf_commonring_get_read_ptr()
245 		commonring->cr_update_wptr(commonring->cr_ctx);  in brcmf_commonring_get_read_ptr()
247 	*n_items = (commonring->w_ptr >= commonring->r_ptr) ?  in brcmf_commonring_get_read_ptr()
248 				(commonring->w_ptr - commonring->r_ptr) :  in brcmf_commonring_get_read_ptr()
249 				(commonring->depth - commonring->r_ptr);  in brcmf_commonring_get_read_ptr()
254 	ret_addr = commonring->buf_addr +  in brcmf_commonring_get_read_ptr()
255 		   (commonring->r_ptr * commonring->item_len);  in brcmf_commonring_get_read_ptr()
257 	commonring->r_ptr += *n_items;  in brcmf_commonring_get_read_ptr()
258 	if (commonring->r_ptr == commonring->depth)  in brcmf_commonring_get_read_ptr()
259 		commonring->r_ptr = 0;  in brcmf_commonring_get_read_ptr()
261 	brcmf_dma_invalidate_cache(ret_addr, *n_ items * commonring->item_len);  in brcmf_commonring_get_read_ptr()
267 int brcmf_commonring_read_complete(struct brcmf_commonring *commonring)  in brcmf_commonring_read_complete()  argument
269 	if (commonring->cr_write_rptr)  in brcmf_commonring_read_complete()
270 		return commonring->cr_write_rptr(commonring->cr_ctx);  in brcmf_commonring_read_complete()