1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
74 	device_t dev = sc->ipmi_dev;  in ssif_polled_request()
75 	device_t smbus = sc->ipmi_ssif_smbus;  in ssif_polled_request()
88 	ssif_buf[0] = req->ir_addr;  in ssif_polled_request()
89 	ssif_buf[1] = req->ir_command;  in ssif_polled_request()
90 	if (req->ir_requestlen > 0)  in ssif_polled_request()
91 		bcopy(req->ir_request, &ssif_buf[2],  in ssif_polled_request()
92 		    min(req->ir_requestlen, SMBUS_DATA_SIZE - 2));  in ssif_polled_request()
95 	if (req->ir_requestlen <= 30) {  in ssif_polled_request()
98 		    req->ir_requestlen + 2);  in ssif_polled_request()
101 			sc->ipmi_ssif_smbus_address, SMBUS_WRITE_SINGLE,  in ssif_polled_request()
102 			req->ir_requestlen + 2, ssif_buf));  in ssif_polled_request()
105 			device_printf(dev, "SSIF: WRITE_SINGLE error %d\n",  in ssif_polled_request()
111 		/* Longer requests are sent out in 32-byte messages. */  in ssif_polled_request()
116 			sc->ipmi_ssif_smbus_address, SMBUS_WRITE_START,  in ssif_polled_request()
120 			device_printf(dev, "SSIF: WRITE_START error %d\n",  in ssif_polled_request()
126 		len = req->ir_requestlen - (SMBUS_DATA_SIZE - 2);  in ssif_polled_request()
127 		cp = req->ir_request + (SMBUS_DATA_SIZE - 2);  in ssif_polled_request()
134 			    sc->ipmi_ssif_smbus_address, SMBUS_WRITE_CONT,  in ssif_polled_request()
138 				device_printf(dev, "SSIF: WRITE_CONT error %d\n",  in ssif_polled_request()
144 			len -= SMBUS_DATA_SIZE;  in ssif_polled_request()
148 		 * The final WRITE_CONT transaction has to have a non-zero  in ssif_polled_request()
161 				sc->ipmi_ssif_smbus_address, SMBUS_WRITE_CONT,  in ssif_polled_request()
165 				device_printf(dev, "SSIF: WRITE_CONT error %d\n",  in ssif_polled_request()
176 	/* Give the BMC 100ms to chew on the request. */  in ssif_polled_request()
185 	    sc->ipmi_ssif_smbus_address, SMBUS_READ_START, &count, ssif_buf));  in ssif_polled_request()
189 		device_printf(dev, "SSIF: READ_START retry\n");  in ssif_polled_request()
191 		/* Give the BMC another 10ms. */  in ssif_polled_request()
197 		device_printf(dev, "SSIF: READ_START failed: %d\n", error);  in ssif_polled_request()
202 	device_printf(dev, "SSIF: READ_START: ok\n");  in ssif_polled_request()
206 	 * If this is the first part of a multi-part read, then we need to  in ssif_polled_request()
216 		device_printf(dev, "SSIF: Short reply packet\n");  in ssif_polled_request()
221 	if (ssif_buf[offset] != IPMI_REPLY_ADDR(req->ir_addr)) {  in ssif_polled_request()
222 		device_printf(dev, "SSIF: Reply address mismatch\n");  in ssif_polled_request()
227 	if (ssif_buf[offset + 1] != req->ir_command) {  in ssif_polled_request()
233 	req->ir_compcode = ssif_buf[offset + 2];  in ssif_polled_request()
240 		len = count - 3;  in ssif_polled_request()
241 		bcopy(&ssif_buf[3], req->ir_reply,  in ssif_polled_request()
242 		    min(req->ir_replybuflen, len));  in ssif_polled_request()
247 	 * This is the first part of a multi-read transaction, so copy  in ssif_polled_request()
251 	dump_buffer(dev, "READ_START", ssif_buf + 2, count - 2);  in ssif_polled_request()
253 	bcopy(&ssif_buf[5], req->ir_reply, min(req->ir_replybuflen, count - 5));  in ssif_polled_request()
254 	len = count - 5;  in ssif_polled_request()
261 		    sc->ipmi_ssif_smbus_address, SMBUS_READ_CONT, &count,  in ssif_polled_request()
265 			printf("SSIF: READ_CONT failed: %d\n", error);  in ssif_polled_request()
270 		device_printf(dev, "SSIF: READ_CONT... ok\n");  in ssif_polled_request()
275 			device_printf(dev, "SSIF: Read wrong block %d %d\n",  in ssif_polled_request()
281 			    "SSIF: Read short middle block, length %d\n",  in ssif_polled_request()
287 			dump_buffer(dev, "READ_END", ssif_buf + 1, count - 1);  in ssif_polled_request()
289 			dump_buffer(dev, "READ_CONT", ssif_buf + 1, count - 1);  in ssif_polled_request()
291 		if (len < req->ir_replybuflen)  in ssif_polled_request()
292 			bcopy(&ssif_buf[1], &req->ir_reply[len],  in ssif_polled_request()
293 			    min(req->ir_replybuflen - len, count - 1));  in ssif_polled_request()
294 		len += count - 1;  in ssif_polled_request()
304 	req->ir_replylen = len;  in ssif_polled_request()
332 			device_printf(sc->ipmi_dev,  in ssif_loop()
333 			    "SSIF: Retrying request (%d)\n", i + 1);  in ssif_loop()
337 			req->ir_error = 0;  in ssif_loop()
339 			req->ir_error = EIO;  in ssif_loop()
357 	return (kproc_create(ssif_loop, sc, &sc->ipmi_kthread, 0, 0,  in ssif_startup()
358 	    "%s: ssif", device_get_nameunit(sc->ipmi_dev)));  in ssif_startup()
369 		error = msleep(req, &sc->ipmi_requests_lock, 0, "ipmireq", 0);  in ssif_driver_request()
371 		error = req->ir_error;  in ssif_driver_request()
381 	sc->ipmi_ssif_smbus = smbus;  in ipmi_ssif_attach()
382 	sc->ipmi_ssif_smbus_address = smbus_address;  in ipmi_ssif_attach()
385 	sc->ipmi_startup = ssif_startup;  in ipmi_ssif_attach()
386 	sc->ipmi_enqueue_request = ipmi_polled_enqueue_request;  in ipmi_ssif_attach()
387 	sc->ipmi_driver_request = ssif_driver_request;  in ipmi_ssif_attach()