16 #include "ipa.h"
25  * DOC: IPA Filter and Route Tables
27  * The IPA has tables defined in its local (IPA-resident) memory that define
35  * by all IPA hardware (IPA v4.2 doesn't support hashed tables).
38  * an object (such as a route or filter table) in IPA-resident memory must
52  * address of a filter rule in the memory following the bitmap.  Until IPA
58  * removed starting at IPA v5.0.  For IPA v5.0+, the endpoint bitmap
60  * bitmap, endpoint 1 has a filter rule.  Older versions of IPA represent
72  * endpoints they "own" directly.  Currently the AP does not use the IPA
76  * bitmap as defined prior to IPA v5.0.
78  *                    IPA Filter Table
97  * though the AP currently does not use the IPA routing functionality.
99  *                    IPA Route Table
145 ipa_table_mem(struct ipa *ipa, bool filter, bool hashed, bool ipv6)  in ipa_table_mem()  argument
158 	return ipa_mem_find(ipa, mem_id);  in ipa_table_mem()
162 bool ipa_table_hash_support(struct ipa *ipa)  in ipa_table_hash_support()  argument
164 	return ipa->version != IPA_VERSION_4_2;  in ipa_table_hash_support()
167 bool ipa_filtered_valid(struct ipa *ipa, u64 filtered)  in ipa_filtered_valid()  argument
169 	struct device *dev = ipa->dev;  in ipa_filtered_valid()
179 	if (count > ipa->filter_count) {  in ipa_filtered_valid()
181 			count, ipa->filter_count);  in ipa_filtered_valid()
190 static dma_addr_t ipa_table_addr(struct ipa *ipa, bool filter_mask, u16 count)  in ipa_table_addr()  argument
197 	WARN_ON(count > max_t(u32, ipa->filter_count, ipa->route_count));  in ipa_table_addr()
202 	return ipa->table_addr + skip * sizeof(*ipa->table_virt);  in ipa_table_addr()
208 	struct ipa *ipa = container_of(trans->gsi, struct ipa, gsi);  in ipa_table_reset_add()  local
215 	mem = ipa_table_mem(ipa, filter, hashed, ipv6);  in ipa_table_reset_add()
224 	addr = ipa_table_addr(ipa, false, count);  in ipa_table_reset_add()
234 ipa_filter_reset_table(struct ipa *ipa, bool hashed, bool ipv6, bool modem)  in ipa_filter_reset_table()  argument
236 	u64 ep_mask = ipa->filtered;  in ipa_filter_reset_table()
240 	trans = ipa_cmd_trans_alloc(ipa, hweight64(ep_mask));  in ipa_filter_reset_table()
242 		dev_err(ipa->dev, "no transaction for %s filter reset\n",  in ipa_filter_reset_table()
254 		endpoint = &ipa->endpoint[endpoint_id];  in ipa_filter_reset_table()
270 static int ipa_filter_reset(struct ipa *ipa, bool modem)  in ipa_filter_reset()  argument
274 	ret = ipa_filter_reset_table(ipa, false, false, modem);  in ipa_filter_reset()
278 	ret = ipa_filter_reset_table(ipa, false, true, modem);  in ipa_filter_reset()
279 	if (ret || !ipa_table_hash_support(ipa))  in ipa_filter_reset()
282 	ret = ipa_filter_reset_table(ipa, true, false, modem);  in ipa_filter_reset()
286 	return ipa_filter_reset_table(ipa, true, true, modem);  in ipa_filter_reset()
293 static int ipa_route_reset(struct ipa *ipa, bool modem)  in ipa_route_reset()  argument
295 	bool hash_support = ipa_table_hash_support(ipa);  in ipa_route_reset()
296 	u32 modem_route_count = ipa->modem_route_count;  in ipa_route_reset()
301 	trans = ipa_cmd_trans_alloc(ipa, hash_support ? 4 : 2);  in ipa_route_reset()
303 		dev_err(ipa->dev, "no transaction for %s route reset\n",  in ipa_route_reset()
313 		count = ipa->route_count - modem_route_count;  in ipa_route_reset()
329 void ipa_table_reset(struct ipa *ipa, bool modem)  in ipa_table_reset()  argument
331 	struct device *dev = ipa->dev;  in ipa_table_reset()
338 	ret = ipa_filter_reset(ipa, modem);  in ipa_table_reset()
343 	ret = ipa_route_reset(ipa, modem);  in ipa_table_reset()
349 int ipa_table_hash_flush(struct ipa *ipa)  in ipa_table_hash_flush()  argument
355 	if (!ipa_table_hash_support(ipa))  in ipa_table_hash_flush()
358 	trans = ipa_cmd_trans_alloc(ipa, 1);  in ipa_table_hash_flush()
360 		dev_err(ipa->dev, "no transaction for hash flush\n");  in ipa_table_hash_flush()
364 	if (ipa->version < IPA_VERSION_5_0) {  in ipa_table_hash_flush()
365 		reg = ipa_reg(ipa, FILT_ROUT_HASH_FLUSH);  in ipa_table_hash_flush()
372 		reg = ipa_reg(ipa, FILT_ROUT_CACHE_FLUSH);  in ipa_table_hash_flush()
374 		/* IPA v5.0+ uses a unified cache (both IPv4 and IPv6) */  in ipa_table_hash_flush()
388 	struct ipa *ipa = container_of(trans->gsi, struct ipa, gsi);  in ipa_table_init_add()  local
408 	mem = ipa_table_mem(ipa, filter, false, ipv6);  in ipa_table_init_add()
409 	hash_mem = ipa_table_mem(ipa, filter, true, ipv6);  in ipa_table_init_add()
419 		count = 1 + hweight64(ipa->filtered);  in ipa_table_init_add()
431 	addr = ipa_table_addr(ipa, filter, count);  in ipa_table_init_add()
432 	hash_addr = ipa_table_addr(ipa, filter, hash_count);  in ipa_table_init_add()
443 				   ipa->zero_addr, true);  in ipa_table_init_add()
451 				   ipa->zero_addr, true);  in ipa_table_init_add()
454 int ipa_table_setup(struct ipa *ipa)  in ipa_table_setup()  argument
471 	trans = ipa_cmd_trans_alloc(ipa, 8);  in ipa_table_setup()
473 		dev_err(ipa->dev, "no transaction for table setup\n");  in ipa_table_setup()
497 	struct ipa *ipa = endpoint->ipa;  in ipa_filter_tuple_zero()  local
502 	if (ipa->version < IPA_VERSION_5_0) {  in ipa_filter_tuple_zero()
503 		reg = ipa_reg(ipa, ENDP_FILTER_ROUTER_HSH_CFG);  in ipa_filter_tuple_zero()
506 		val = ioread32(endpoint->ipa->reg_virt + offset);  in ipa_filter_tuple_zero()
511 		/* IPA v5.0 separates filter and router cache configuration */  in ipa_filter_tuple_zero()
512 		reg = ipa_reg(ipa, ENDP_FILTER_CACHE_CFG);  in ipa_filter_tuple_zero()
519 	iowrite32(val, endpoint->ipa->reg_virt + offset);  in ipa_filter_tuple_zero()
523 static void ipa_filter_config(struct ipa *ipa, bool modem)  in ipa_filter_config()  argument
526 	u64 ep_mask = ipa->filtered;  in ipa_filter_config()
528 	if (!ipa_table_hash_support(ipa))  in ipa_filter_config()
537 		endpoint = &ipa->endpoint[endpoint_id];  in ipa_filter_config()
543 static bool ipa_route_id_modem(struct ipa *ipa, u32 route_id)  in ipa_route_id_modem()  argument
545 	return route_id < ipa->modem_route_count;  in ipa_route_id_modem()
550  * @ipa:	IPA pointer
555 static void ipa_route_tuple_zero(struct ipa *ipa, u32 route_id)  in ipa_route_tuple_zero()  argument
561 	if (ipa->version < IPA_VERSION_5_0) {  in ipa_route_tuple_zero()
562 		reg = ipa_reg(ipa, ENDP_FILTER_ROUTER_HSH_CFG);  in ipa_route_tuple_zero()
565 		val = ioread32(ipa->reg_virt + offset);  in ipa_route_tuple_zero()
570 		/* IPA v5.0 separates filter and router cache configuration */  in ipa_route_tuple_zero()
571 		reg = ipa_reg(ipa, ENDP_ROUTER_CACHE_CFG);  in ipa_route_tuple_zero()
578 	iowrite32(val, ipa->reg_virt + offset);  in ipa_route_tuple_zero()
582 static void ipa_route_config(struct ipa *ipa, bool modem)  in ipa_route_config()  argument
586 	if (!ipa_table_hash_support(ipa))  in ipa_route_config()
589 	for (route_id = 0; route_id < ipa->route_count; route_id++)  in ipa_route_config()
590 		if (ipa_route_id_modem(ipa, route_id) == modem)  in ipa_route_config()
591 			ipa_route_tuple_zero(ipa, route_id);  in ipa_route_config()
595 void ipa_table_config(struct ipa *ipa)  in ipa_table_config()  argument
597 	ipa_filter_config(ipa, false);  in ipa_table_config()
598 	ipa_filter_config(ipa, true);  in ipa_table_config()
599 	ipa_route_config(ipa, false);  in ipa_table_config()
600 	ipa_route_config(ipa, true);  in ipa_table_config()
603 /* Verify the sizes of all IPA table filter or routing table memory regions
606 bool ipa_table_mem_valid(struct ipa *ipa, bool filter)  in ipa_table_mem_valid()  argument
608 	bool hash_support = ipa_table_hash_support(ipa);  in ipa_table_mem_valid()
618 	mem_ipv4 = ipa_table_mem(ipa, filter, false, false);  in ipa_table_mem_valid()
622 	mem_ipv6 = ipa_table_mem(ipa, filter, false, true);  in ipa_table_mem_valid()
634 		ipa->filter_count = count - 1;	/* Filter map in first entry */  in ipa_table_mem_valid()
636 		ipa->route_count = count;  in ipa_table_mem_valid()
639 	if (!ipa_cmd_table_init_valid(ipa, mem_ipv4, !filter))  in ipa_table_mem_valid()
647 		if (count < 1 + hweight64(ipa->filtered))  in ipa_table_mem_valid()
653 		if (count < ipa->modem_route_count + 1)  in ipa_table_mem_valid()
662 	mem_hashed = ipa_table_mem(ipa, filter, true, false);  in ipa_table_mem_valid()
672 	mem_hashed = ipa_table_mem(ipa, filter, true, true);  in ipa_table_mem_valid()
685  * route table data.  This is used when initializing or resetting the IPA
708  *	| ---- zero rule address |  |	Max IPA filter count
709  *	|    |-------------------|   >	or IPA route count,
715 int ipa_table_init(struct ipa *ipa)  in ipa_table_init()  argument
717 	struct device *dev = ipa->dev;  in ipa_table_init()
726 	count = max_t(u32, ipa->filter_count, ipa->route_count);  in ipa_table_init()
728 	/* The IPA hardware requires route and filter table rules to be  in ipa_table_init()
739 	ipa->table_virt = virt;  in ipa_table_init()
740 	ipa->table_addr = addr;  in ipa_table_init()
747 	 * it left one position.  Prior to IPA v5.0, bit 0 repesents global  in ipa_table_init()
748 	 * filtering, which is possible but not used.  IPA v5.0+ eliminated  in ipa_table_init()
751 	if (ipa->version < IPA_VERSION_5_0)  in ipa_table_init()
752 		*virt++ = cpu_to_le64(ipa->filtered << 1);  in ipa_table_init()
754 		*virt++ = cpu_to_le64(ipa->filtered);  in ipa_table_init()
764 void ipa_table_exit(struct ipa *ipa)  in ipa_table_exit()  argument
766 	u32 count = max_t(u32, 1 + ipa->filter_count, ipa->route_count);  in ipa_table_exit()
767 	struct device *dev = ipa->dev;  in ipa_table_exit()
772 	dma_free_coherent(dev, size, ipa->table_virt, ipa->table_addr);  in ipa_table_exit()
773 	ipa->table_addr = 0;  in ipa_table_exit()
774 	ipa->table_virt = NULL;  in ipa_table_exit()