11739d54cSCorey Minyard /* 21739d54cSCorey Minyard * QEMU IPMI BT emulation 31739d54cSCorey Minyard * 41739d54cSCorey Minyard * Copyright (c) 2015 Corey Minyard, MontaVista Software, LLC 51739d54cSCorey Minyard * 61739d54cSCorey Minyard * Permission is hereby granted, free of charge, to any person obtaining a copy 71739d54cSCorey Minyard * of this software and associated documentation files (the "Software"), to deal 81739d54cSCorey Minyard * in the Software without restriction, including without limitation the rights 91739d54cSCorey Minyard * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 101739d54cSCorey Minyard * copies of the Software, and to permit persons to whom the Software is 111739d54cSCorey Minyard * furnished to do so, subject to the following conditions: 121739d54cSCorey Minyard * 131739d54cSCorey Minyard * The above copyright notice and this permission notice shall be included in 141739d54cSCorey Minyard * all copies or substantial portions of the Software. 151739d54cSCorey Minyard * 161739d54cSCorey Minyard * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 171739d54cSCorey Minyard * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 181739d54cSCorey Minyard * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 191739d54cSCorey Minyard * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 201739d54cSCorey Minyard * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 211739d54cSCorey Minyard * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 221739d54cSCorey Minyard * THE SOFTWARE. 231739d54cSCorey Minyard */ 241739d54cSCorey Minyard #include "qemu/osdep.h" 251739d54cSCorey Minyard #include "migration/vmstate.h" 261739d54cSCorey Minyard #include "qemu/log.h" 271739d54cSCorey Minyard #include "qapi/error.h" 281739d54cSCorey Minyard #include "hw/ipmi/ipmi_bt.h" 291739d54cSCorey Minyard 301739d54cSCorey Minyard /* Control register */ 311739d54cSCorey Minyard #define IPMI_BT_CLR_WR_BIT 0 321739d54cSCorey Minyard #define IPMI_BT_CLR_RD_BIT 1 331739d54cSCorey Minyard #define IPMI_BT_H2B_ATN_BIT 2 341739d54cSCorey Minyard #define IPMI_BT_B2H_ATN_BIT 3 351739d54cSCorey Minyard #define IPMI_BT_SMS_ATN_BIT 4 361739d54cSCorey Minyard #define IPMI_BT_HBUSY_BIT 6 371739d54cSCorey Minyard #define IPMI_BT_BBUSY_BIT 7 381739d54cSCorey Minyard 391739d54cSCorey Minyard #define IPMI_BT_GET_CLR_WR(d) (((d) >> IPMI_BT_CLR_WR_BIT) & 0x1) 401739d54cSCorey Minyard 411739d54cSCorey Minyard #define IPMI_BT_GET_CLR_RD(d) (((d) >> IPMI_BT_CLR_RD_BIT) & 0x1) 421739d54cSCorey Minyard 431739d54cSCorey Minyard #define IPMI_BT_GET_H2B_ATN(d) (((d) >> IPMI_BT_H2B_ATN_BIT) & 0x1) 441739d54cSCorey Minyard 451739d54cSCorey Minyard #define IPMI_BT_B2H_ATN_MASK (1 << IPMI_BT_B2H_ATN_BIT) 461739d54cSCorey Minyard #define IPMI_BT_GET_B2H_ATN(d) (((d) >> IPMI_BT_B2H_ATN_BIT) & 0x1) 471739d54cSCorey Minyard #define IPMI_BT_SET_B2H_ATN(d, v) ((d) = (((d) & ~IPMI_BT_B2H_ATN_MASK) | \ 481739d54cSCorey Minyard (!!(v) << IPMI_BT_B2H_ATN_BIT))) 491739d54cSCorey Minyard 501739d54cSCorey Minyard #define IPMI_BT_SMS_ATN_MASK (1 << IPMI_BT_SMS_ATN_BIT) 511739d54cSCorey Minyard #define IPMI_BT_GET_SMS_ATN(d) (((d) >> IPMI_BT_SMS_ATN_BIT) & 0x1) 521739d54cSCorey Minyard #define IPMI_BT_SET_SMS_ATN(d, v) ((d) = (((d) & ~IPMI_BT_SMS_ATN_MASK) | \ 531739d54cSCorey Minyard (!!(v) << IPMI_BT_SMS_ATN_BIT))) 541739d54cSCorey Minyard 551739d54cSCorey Minyard #define IPMI_BT_HBUSY_MASK (1 << IPMI_BT_HBUSY_BIT) 561739d54cSCorey Minyard #define IPMI_BT_GET_HBUSY(d) (((d) >> IPMI_BT_HBUSY_BIT) & 0x1) 571739d54cSCorey Minyard #define IPMI_BT_SET_HBUSY(d, v) ((d) = (((d) & ~IPMI_BT_HBUSY_MASK) | \ 581739d54cSCorey Minyard (!!(v) << IPMI_BT_HBUSY_BIT))) 591739d54cSCorey Minyard 601739d54cSCorey Minyard #define IPMI_BT_BBUSY_MASK (1 << IPMI_BT_BBUSY_BIT) 611739d54cSCorey Minyard #define IPMI_BT_SET_BBUSY(d, v) ((d) = (((d) & ~IPMI_BT_BBUSY_MASK) | \ 621739d54cSCorey Minyard (!!(v) << IPMI_BT_BBUSY_BIT))) 631739d54cSCorey Minyard 641739d54cSCorey Minyard 651739d54cSCorey Minyard /* Mask register */ 661739d54cSCorey Minyard #define IPMI_BT_B2H_IRQ_EN_BIT 0 671739d54cSCorey Minyard #define IPMI_BT_B2H_IRQ_BIT 1 681739d54cSCorey Minyard 691739d54cSCorey Minyard #define IPMI_BT_B2H_IRQ_EN_MASK (1 << IPMI_BT_B2H_IRQ_EN_BIT) 701739d54cSCorey Minyard #define IPMI_BT_GET_B2H_IRQ_EN(d) (((d) >> IPMI_BT_B2H_IRQ_EN_BIT) & 0x1) 711739d54cSCorey Minyard #define IPMI_BT_SET_B2H_IRQ_EN(d, v) ((d) = (((d) & ~IPMI_BT_B2H_IRQ_EN_MASK) |\ 721739d54cSCorey Minyard (!!(v) << IPMI_BT_B2H_IRQ_EN_BIT))) 731739d54cSCorey Minyard 741739d54cSCorey Minyard #define IPMI_BT_B2H_IRQ_MASK (1 << IPMI_BT_B2H_IRQ_BIT) 751739d54cSCorey Minyard #define IPMI_BT_GET_B2H_IRQ(d) (((d) >> IPMI_BT_B2H_IRQ_BIT) & 0x1) 761739d54cSCorey Minyard #define IPMI_BT_SET_B2H_IRQ(d, v) ((d) = (((d) & ~IPMI_BT_B2H_IRQ_MASK) | \ 771739d54cSCorey Minyard (!!(v) << IPMI_BT_B2H_IRQ_BIT))) 781739d54cSCorey Minyard 791739d54cSCorey Minyard #define IPMI_CMD_GET_BT_INTF_CAP 0x36 801739d54cSCorey Minyard 811739d54cSCorey Minyard static void ipmi_bt_raise_irq(IPMIBT *ib) 821739d54cSCorey Minyard { 831739d54cSCorey Minyard if (ib->use_irq && ib->irqs_enabled && ib->raise_irq) { 841739d54cSCorey Minyard ib->raise_irq(ib); 851739d54cSCorey Minyard } 861739d54cSCorey Minyard } 871739d54cSCorey Minyard 881739d54cSCorey Minyard static void ipmi_bt_lower_irq(IPMIBT *ib) 891739d54cSCorey Minyard { 901739d54cSCorey Minyard if (ib->lower_irq) { 911739d54cSCorey Minyard ib->lower_irq(ib); 921739d54cSCorey Minyard } 931739d54cSCorey Minyard } 941739d54cSCorey Minyard 951739d54cSCorey Minyard static void ipmi_bt_handle_event(IPMIInterface *ii) 961739d54cSCorey Minyard { 971739d54cSCorey Minyard IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 981739d54cSCorey Minyard IPMIBT *ib = iic->get_backend_data(ii); 991739d54cSCorey Minyard 1001739d54cSCorey Minyard if (ib->inlen < 4) { 101*abb55b1aSMarkus Armbruster return; 1021739d54cSCorey Minyard } 1031739d54cSCorey Minyard /* Note that overruns are handled by handle_command */ 1041739d54cSCorey Minyard if (ib->inmsg[0] != (ib->inlen - 1)) { 1051739d54cSCorey Minyard /* Length mismatch, just ignore. */ 1061739d54cSCorey Minyard IPMI_BT_SET_BBUSY(ib->control_reg, 1); 1071739d54cSCorey Minyard ib->inlen = 0; 108*abb55b1aSMarkus Armbruster return; 1091739d54cSCorey Minyard } 1101739d54cSCorey Minyard if ((ib->inmsg[1] == (IPMI_NETFN_APP << 2)) && 1111739d54cSCorey Minyard (ib->inmsg[3] == IPMI_CMD_GET_BT_INTF_CAP)) { 1121739d54cSCorey Minyard /* We handle this one ourselves. */ 1131739d54cSCorey Minyard ib->outmsg[0] = 9; 1141739d54cSCorey Minyard ib->outmsg[1] = ib->inmsg[1] | 0x04; 1151739d54cSCorey Minyard ib->outmsg[2] = ib->inmsg[2]; 1161739d54cSCorey Minyard ib->outmsg[3] = ib->inmsg[3]; 1171739d54cSCorey Minyard ib->outmsg[4] = 0; 1181739d54cSCorey Minyard ib->outmsg[5] = 1; /* Only support 1 outstanding request. */ 1191739d54cSCorey Minyard if (sizeof(ib->inmsg) > 0xff) { /* Input buffer size */ 1201739d54cSCorey Minyard ib->outmsg[6] = 0xff; 1211739d54cSCorey Minyard } else { 1221739d54cSCorey Minyard ib->outmsg[6] = (unsigned char) sizeof(ib->inmsg); 1231739d54cSCorey Minyard } 1241739d54cSCorey Minyard if (sizeof(ib->outmsg) > 0xff) { /* Output buffer size */ 1251739d54cSCorey Minyard ib->outmsg[7] = 0xff; 1261739d54cSCorey Minyard } else { 1271739d54cSCorey Minyard ib->outmsg[7] = (unsigned char) sizeof(ib->outmsg); 1281739d54cSCorey Minyard } 1291739d54cSCorey Minyard ib->outmsg[8] = 10; /* Max request to response time */ 1301739d54cSCorey Minyard ib->outmsg[9] = 0; /* Don't recommend retries */ 1311739d54cSCorey Minyard ib->outlen = 10; 1321739d54cSCorey Minyard IPMI_BT_SET_BBUSY(ib->control_reg, 0); 1331739d54cSCorey Minyard IPMI_BT_SET_B2H_ATN(ib->control_reg, 1); 1341739d54cSCorey Minyard if (!IPMI_BT_GET_B2H_IRQ(ib->mask_reg) && 1351739d54cSCorey Minyard IPMI_BT_GET_B2H_IRQ_EN(ib->mask_reg)) { 1361739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 1); 1371739d54cSCorey Minyard ipmi_bt_raise_irq(ib); 1381739d54cSCorey Minyard } 139*abb55b1aSMarkus Armbruster return; 1401739d54cSCorey Minyard } 1411739d54cSCorey Minyard ib->waiting_seq = ib->inmsg[2]; 1421739d54cSCorey Minyard ib->inmsg[2] = ib->inmsg[1]; 1431739d54cSCorey Minyard { 1441739d54cSCorey Minyard IPMIBmcClass *bk = IPMI_BMC_GET_CLASS(ib->bmc); 1451739d54cSCorey Minyard bk->handle_command(ib->bmc, ib->inmsg + 2, ib->inlen - 2, 1461739d54cSCorey Minyard sizeof(ib->inmsg), ib->waiting_rsp); 1471739d54cSCorey Minyard } 1481739d54cSCorey Minyard } 1491739d54cSCorey Minyard 1501739d54cSCorey Minyard static void ipmi_bt_handle_rsp(IPMIInterface *ii, uint8_t msg_id, 1511739d54cSCorey Minyard unsigned char *rsp, unsigned int rsp_len) 1521739d54cSCorey Minyard { 1531739d54cSCorey Minyard IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 1541739d54cSCorey Minyard IPMIBT *ib = iic->get_backend_data(ii); 1551739d54cSCorey Minyard 1561739d54cSCorey Minyard if (ib->waiting_rsp == msg_id) { 1571739d54cSCorey Minyard ib->waiting_rsp++; 1581739d54cSCorey Minyard if (rsp_len > (sizeof(ib->outmsg) - 2)) { 1591739d54cSCorey Minyard ib->outmsg[0] = 4; 1601739d54cSCorey Minyard ib->outmsg[1] = rsp[0]; 1611739d54cSCorey Minyard ib->outmsg[2] = ib->waiting_seq; 1621739d54cSCorey Minyard ib->outmsg[3] = rsp[1]; 1631739d54cSCorey Minyard ib->outmsg[4] = IPMI_CC_CANNOT_RETURN_REQ_NUM_BYTES; 1641739d54cSCorey Minyard ib->outlen = 5; 1651739d54cSCorey Minyard } else { 1661739d54cSCorey Minyard ib->outmsg[0] = rsp_len + 1; 1671739d54cSCorey Minyard ib->outmsg[1] = rsp[0]; 1681739d54cSCorey Minyard ib->outmsg[2] = ib->waiting_seq; 1691739d54cSCorey Minyard memcpy(ib->outmsg + 3, rsp + 1, rsp_len - 1); 1701739d54cSCorey Minyard ib->outlen = rsp_len + 2; 1711739d54cSCorey Minyard } 1721739d54cSCorey Minyard IPMI_BT_SET_BBUSY(ib->control_reg, 0); 1731739d54cSCorey Minyard IPMI_BT_SET_B2H_ATN(ib->control_reg, 1); 1741739d54cSCorey Minyard if (!IPMI_BT_GET_B2H_IRQ(ib->mask_reg) && 1751739d54cSCorey Minyard IPMI_BT_GET_B2H_IRQ_EN(ib->mask_reg)) { 1761739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 1); 1771739d54cSCorey Minyard ipmi_bt_raise_irq(ib); 1781739d54cSCorey Minyard } 1791739d54cSCorey Minyard } 1801739d54cSCorey Minyard } 1811739d54cSCorey Minyard 1821739d54cSCorey Minyard 1831739d54cSCorey Minyard static uint64_t ipmi_bt_ioport_read(void *opaque, hwaddr addr, unsigned size) 1841739d54cSCorey Minyard { 1851739d54cSCorey Minyard IPMIInterface *ii = opaque; 1861739d54cSCorey Minyard IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 1871739d54cSCorey Minyard IPMIBT *ib = iic->get_backend_data(ii); 1881739d54cSCorey Minyard uint32_t ret = 0xff; 1891739d54cSCorey Minyard 19079d29a9dSCorey Minyard switch (addr & ib->size_mask) { 1911739d54cSCorey Minyard case 0: 1921739d54cSCorey Minyard ret = ib->control_reg; 1931739d54cSCorey Minyard break; 1941739d54cSCorey Minyard case 1: 1951739d54cSCorey Minyard if (ib->outpos < ib->outlen) { 1961739d54cSCorey Minyard ret = ib->outmsg[ib->outpos]; 1971739d54cSCorey Minyard ib->outpos++; 1981739d54cSCorey Minyard if (ib->outpos == ib->outlen) { 1991739d54cSCorey Minyard ib->outpos = 0; 2001739d54cSCorey Minyard ib->outlen = 0; 2011739d54cSCorey Minyard } 2021739d54cSCorey Minyard } else { 2031739d54cSCorey Minyard ret = 0xff; 2041739d54cSCorey Minyard } 2051739d54cSCorey Minyard break; 2061739d54cSCorey Minyard case 2: 2071739d54cSCorey Minyard ret = ib->mask_reg; 2081739d54cSCorey Minyard break; 20979d29a9dSCorey Minyard default: 21079d29a9dSCorey Minyard ret = 0xff; 21179d29a9dSCorey Minyard break; 2121739d54cSCorey Minyard } 2131739d54cSCorey Minyard return ret; 2141739d54cSCorey Minyard } 2151739d54cSCorey Minyard 2161739d54cSCorey Minyard static void ipmi_bt_signal(IPMIBT *ib, IPMIInterface *ii) 2171739d54cSCorey Minyard { 2181739d54cSCorey Minyard IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 2191739d54cSCorey Minyard 2201739d54cSCorey Minyard ib->do_wake = 1; 2211739d54cSCorey Minyard while (ib->do_wake) { 2221739d54cSCorey Minyard ib->do_wake = 0; 2231739d54cSCorey Minyard iic->handle_if_event(ii); 2241739d54cSCorey Minyard } 2251739d54cSCorey Minyard } 2261739d54cSCorey Minyard 2271739d54cSCorey Minyard static void ipmi_bt_ioport_write(void *opaque, hwaddr addr, uint64_t val, 2281739d54cSCorey Minyard unsigned size) 2291739d54cSCorey Minyard { 2301739d54cSCorey Minyard IPMIInterface *ii = opaque; 2311739d54cSCorey Minyard IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 2321739d54cSCorey Minyard IPMIBT *ib = iic->get_backend_data(ii); 2331739d54cSCorey Minyard 23479d29a9dSCorey Minyard switch (addr & ib->size_mask) { 2351739d54cSCorey Minyard case 0: 2361739d54cSCorey Minyard if (IPMI_BT_GET_CLR_WR(val)) { 2371739d54cSCorey Minyard ib->inlen = 0; 2381739d54cSCorey Minyard } 2391739d54cSCorey Minyard if (IPMI_BT_GET_CLR_RD(val)) { 2401739d54cSCorey Minyard ib->outpos = 0; 2411739d54cSCorey Minyard } 2421739d54cSCorey Minyard if (IPMI_BT_GET_B2H_ATN(val)) { 2431739d54cSCorey Minyard IPMI_BT_SET_B2H_ATN(ib->control_reg, 0); 2441739d54cSCorey Minyard } 2451739d54cSCorey Minyard if (IPMI_BT_GET_SMS_ATN(val)) { 2461739d54cSCorey Minyard IPMI_BT_SET_SMS_ATN(ib->control_reg, 0); 2471739d54cSCorey Minyard } 2481739d54cSCorey Minyard if (IPMI_BT_GET_HBUSY(val)) { 2491739d54cSCorey Minyard /* Toggle */ 2501739d54cSCorey Minyard IPMI_BT_SET_HBUSY(ib->control_reg, 2511739d54cSCorey Minyard !IPMI_BT_GET_HBUSY(ib->control_reg)); 2521739d54cSCorey Minyard } 2531739d54cSCorey Minyard if (IPMI_BT_GET_H2B_ATN(val)) { 2541739d54cSCorey Minyard IPMI_BT_SET_BBUSY(ib->control_reg, 1); 2551739d54cSCorey Minyard ipmi_bt_signal(ib, ii); 2561739d54cSCorey Minyard } 2571739d54cSCorey Minyard break; 2581739d54cSCorey Minyard 2591739d54cSCorey Minyard case 1: 2601739d54cSCorey Minyard if (ib->inlen < sizeof(ib->inmsg)) { 2611739d54cSCorey Minyard ib->inmsg[ib->inlen] = val; 2621739d54cSCorey Minyard } 2631739d54cSCorey Minyard ib->inlen++; 2641739d54cSCorey Minyard break; 2651739d54cSCorey Minyard 2661739d54cSCorey Minyard case 2: 2671739d54cSCorey Minyard if (IPMI_BT_GET_B2H_IRQ_EN(val) != 2681739d54cSCorey Minyard IPMI_BT_GET_B2H_IRQ_EN(ib->mask_reg)) { 2691739d54cSCorey Minyard if (IPMI_BT_GET_B2H_IRQ_EN(val)) { 2701739d54cSCorey Minyard if (IPMI_BT_GET_B2H_ATN(ib->control_reg) || 2711739d54cSCorey Minyard IPMI_BT_GET_SMS_ATN(ib->control_reg)) { 2721739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 1); 2731739d54cSCorey Minyard ipmi_bt_raise_irq(ib); 2741739d54cSCorey Minyard } 2751739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ_EN(ib->mask_reg, 1); 2761739d54cSCorey Minyard } else { 2771739d54cSCorey Minyard if (IPMI_BT_GET_B2H_IRQ(ib->mask_reg)) { 2781739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 0); 2791739d54cSCorey Minyard ipmi_bt_lower_irq(ib); 2801739d54cSCorey Minyard } 2811739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ_EN(ib->mask_reg, 0); 2821739d54cSCorey Minyard } 2831739d54cSCorey Minyard } 2841739d54cSCorey Minyard if (IPMI_BT_GET_B2H_IRQ(val) && IPMI_BT_GET_B2H_IRQ(ib->mask_reg)) { 2851739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 0); 2861739d54cSCorey Minyard ipmi_bt_lower_irq(ib); 2871739d54cSCorey Minyard } 2881739d54cSCorey Minyard break; 28979d29a9dSCorey Minyard default: 29079d29a9dSCorey Minyard /* Ignore. */ 29179d29a9dSCorey Minyard break; 2921739d54cSCorey Minyard } 2931739d54cSCorey Minyard } 2941739d54cSCorey Minyard 2951739d54cSCorey Minyard static const MemoryRegionOps ipmi_bt_io_ops = { 2961739d54cSCorey Minyard .read = ipmi_bt_ioport_read, 2971739d54cSCorey Minyard .write = ipmi_bt_ioport_write, 2981739d54cSCorey Minyard .impl = { 2991739d54cSCorey Minyard .min_access_size = 1, 3001739d54cSCorey Minyard .max_access_size = 1, 3011739d54cSCorey Minyard }, 3021739d54cSCorey Minyard .endianness = DEVICE_LITTLE_ENDIAN, 3031739d54cSCorey Minyard }; 3041739d54cSCorey Minyard 3051739d54cSCorey Minyard static void ipmi_bt_set_atn(IPMIInterface *ii, int val, int irq) 3061739d54cSCorey Minyard { 3071739d54cSCorey Minyard IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 3081739d54cSCorey Minyard IPMIBT *ib = iic->get_backend_data(ii); 3091739d54cSCorey Minyard 3101739d54cSCorey Minyard if (!!val == IPMI_BT_GET_SMS_ATN(ib->control_reg)) { 3111739d54cSCorey Minyard return; 3121739d54cSCorey Minyard } 3131739d54cSCorey Minyard 3141739d54cSCorey Minyard IPMI_BT_SET_SMS_ATN(ib->control_reg, val); 3151739d54cSCorey Minyard if (val) { 3161739d54cSCorey Minyard if (irq && !IPMI_BT_GET_B2H_ATN(ib->control_reg) && 3171739d54cSCorey Minyard IPMI_BT_GET_B2H_IRQ_EN(ib->mask_reg)) { 3181739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 1); 3191739d54cSCorey Minyard ipmi_bt_raise_irq(ib); 3201739d54cSCorey Minyard } 3211739d54cSCorey Minyard } else { 3221739d54cSCorey Minyard if (!IPMI_BT_GET_B2H_ATN(ib->control_reg) && 3231739d54cSCorey Minyard IPMI_BT_GET_B2H_IRQ(ib->mask_reg)) { 3241739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 0); 3251739d54cSCorey Minyard ipmi_bt_lower_irq(ib); 3261739d54cSCorey Minyard } 3271739d54cSCorey Minyard } 3281739d54cSCorey Minyard } 3291739d54cSCorey Minyard 3301739d54cSCorey Minyard static void ipmi_bt_handle_reset(IPMIInterface *ii, bool is_cold) 3311739d54cSCorey Minyard { 3321739d54cSCorey Minyard IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 3331739d54cSCorey Minyard IPMIBT *ib = iic->get_backend_data(ii); 3341739d54cSCorey Minyard 3351739d54cSCorey Minyard if (is_cold) { 3361739d54cSCorey Minyard /* Disable the BT interrupt on reset */ 3371739d54cSCorey Minyard if (IPMI_BT_GET_B2H_IRQ(ib->mask_reg)) { 3381739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 0); 3391739d54cSCorey Minyard ipmi_bt_lower_irq(ib); 3401739d54cSCorey Minyard } 3411739d54cSCorey Minyard IPMI_BT_SET_B2H_IRQ_EN(ib->mask_reg, 0); 3421739d54cSCorey Minyard } 3431739d54cSCorey Minyard } 3441739d54cSCorey Minyard 3451739d54cSCorey Minyard static void ipmi_bt_set_irq_enable(IPMIInterface *ii, int val) 3461739d54cSCorey Minyard { 3471739d54cSCorey Minyard IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 3481739d54cSCorey Minyard IPMIBT *ib = iic->get_backend_data(ii); 3491739d54cSCorey Minyard 3501739d54cSCorey Minyard ib->irqs_enabled = val; 3511739d54cSCorey Minyard } 3521739d54cSCorey Minyard 35379d29a9dSCorey Minyard static void ipmi_bt_init(IPMIInterface *ii, unsigned int min_size, Error **errp) 3541739d54cSCorey Minyard { 3551739d54cSCorey Minyard IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 3561739d54cSCorey Minyard IPMIBT *ib = iic->get_backend_data(ii); 3571739d54cSCorey Minyard 35879d29a9dSCorey Minyard if (min_size == 0) { 35979d29a9dSCorey Minyard min_size = 4; 36079d29a9dSCorey Minyard } 36179d29a9dSCorey Minyard ib->size_mask = min_size - 1; 3621739d54cSCorey Minyard ib->io_length = 3; 3631739d54cSCorey Minyard 36479d29a9dSCorey Minyard memory_region_init_io(&ib->io, NULL, &ipmi_bt_io_ops, ii, "ipmi-bt", 36579d29a9dSCorey Minyard min_size); 3661739d54cSCorey Minyard } 3671739d54cSCorey Minyard 3681739d54cSCorey Minyard int ipmi_bt_vmstate_post_load(void *opaque, int version) 3691739d54cSCorey Minyard { 3701739d54cSCorey Minyard IPMIBT *ib = opaque; 3711739d54cSCorey Minyard 3721739d54cSCorey Minyard /* Make sure all the values are sane. */ 3731739d54cSCorey Minyard if (ib->outpos >= MAX_IPMI_MSG_SIZE || ib->outlen >= MAX_IPMI_MSG_SIZE || 3741739d54cSCorey Minyard ib->outpos >= ib->outlen) { 3751739d54cSCorey Minyard qemu_log_mask(LOG_GUEST_ERROR, 3761739d54cSCorey Minyard "ipmi:bt: vmstate transfer received bad out values: %d %d\n", 3771739d54cSCorey Minyard ib->outpos, ib->outlen); 3781739d54cSCorey Minyard ib->outpos = 0; 3791739d54cSCorey Minyard ib->outlen = 0; 3801739d54cSCorey Minyard } 3811739d54cSCorey Minyard 3821739d54cSCorey Minyard if (ib->inlen >= MAX_IPMI_MSG_SIZE) { 3831739d54cSCorey Minyard qemu_log_mask(LOG_GUEST_ERROR, 3841739d54cSCorey Minyard "ipmi:bt: vmstate transfer received bad in value: %d\n", 3851739d54cSCorey Minyard ib->inlen); 3861739d54cSCorey Minyard ib->inlen = 0; 3871739d54cSCorey Minyard } 3881739d54cSCorey Minyard 3891739d54cSCorey Minyard return 0; 3901739d54cSCorey Minyard } 3911739d54cSCorey Minyard 3921739d54cSCorey Minyard const VMStateDescription vmstate_IPMIBT = { 3931739d54cSCorey Minyard .name = TYPE_IPMI_INTERFACE_PREFIX "bt", 3941739d54cSCorey Minyard .version_id = 1, 3951739d54cSCorey Minyard .minimum_version_id = 1, 3961739d54cSCorey Minyard .post_load = ipmi_bt_vmstate_post_load, 39709c6ac6dSRichard Henderson .fields = (const VMStateField[]) { 3981739d54cSCorey Minyard VMSTATE_BOOL(obf_irq_set, IPMIBT), 3991739d54cSCorey Minyard VMSTATE_BOOL(atn_irq_set, IPMIBT), 4001739d54cSCorey Minyard VMSTATE_BOOL(irqs_enabled, IPMIBT), 4011739d54cSCorey Minyard VMSTATE_UINT32(outpos, IPMIBT), 4021739d54cSCorey Minyard VMSTATE_UINT32(outlen, IPMIBT), 4031739d54cSCorey Minyard VMSTATE_UINT8_ARRAY(outmsg, IPMIBT, MAX_IPMI_MSG_SIZE), 4041739d54cSCorey Minyard VMSTATE_UINT32(inlen, IPMIBT), 4051739d54cSCorey Minyard VMSTATE_UINT8_ARRAY(inmsg, IPMIBT, MAX_IPMI_MSG_SIZE), 4061739d54cSCorey Minyard VMSTATE_UINT8(control_reg, IPMIBT), 4071739d54cSCorey Minyard VMSTATE_UINT8(mask_reg, IPMIBT), 4081739d54cSCorey Minyard VMSTATE_UINT8(waiting_rsp, IPMIBT), 4091739d54cSCorey Minyard VMSTATE_UINT8(waiting_seq, IPMIBT), 4101739d54cSCorey Minyard VMSTATE_END_OF_LIST() 4111739d54cSCorey Minyard } 4121739d54cSCorey Minyard }; 4131739d54cSCorey Minyard 4141739d54cSCorey Minyard void ipmi_bt_get_fwinfo(struct IPMIBT *ib, IPMIFwInfo *info) 4151739d54cSCorey Minyard { 4161739d54cSCorey Minyard info->interface_name = "bt"; 4171739d54cSCorey Minyard info->interface_type = IPMI_SMBIOS_BT; 4181739d54cSCorey Minyard info->ipmi_spec_major_revision = 2; 4191739d54cSCorey Minyard info->ipmi_spec_minor_revision = 0; 4207f9e7af4SNicholas Piggin /* BT System Interface Format, IPMI v1.5 */ 4217f9e7af4SNicholas Piggin info->ipmi_channel_protocol = IPMI_CHANNEL_PROTOCOL_BT_15; 4221739d54cSCorey Minyard info->base_address = ib->io_base; 4231739d54cSCorey Minyard info->register_length = ib->io_length; 4241739d54cSCorey Minyard info->register_spacing = 1; 4251739d54cSCorey Minyard info->memspace = IPMI_MEMSPACE_IO; 4261739d54cSCorey Minyard info->irq_type = IPMI_LEVEL_IRQ; 4271739d54cSCorey Minyard } 4281739d54cSCorey Minyard 4291739d54cSCorey Minyard void ipmi_bt_class_init(IPMIInterfaceClass *iic) 4301739d54cSCorey Minyard { 4311739d54cSCorey Minyard iic->init = ipmi_bt_init; 4321739d54cSCorey Minyard iic->set_atn = ipmi_bt_set_atn; 4331739d54cSCorey Minyard iic->handle_rsp = ipmi_bt_handle_rsp; 4341739d54cSCorey Minyard iic->handle_if_event = ipmi_bt_handle_event; 4351739d54cSCorey Minyard iic->set_irq_enable = ipmi_bt_set_irq_enable; 4361739d54cSCorey Minyard iic->reset = ipmi_bt_handle_reset; 4371739d54cSCorey Minyard } 438