2 * This file is part of the Palacios Virtual Machine Monitor developed
3 * by the V3VEE Project with funding from the United States National
4 * Science Foundation and the Department of Energy.
6 * The V3VEE Project is a joint project between Northwestern University
7 * and the University of New Mexico. You can find out more at
10 * Copyright (c) 2009, Jack Lange <jarusl@cs.northwestern.edu>
11 * Copyright (c) 2009, The V3VEE Project <http://www.v3vee.org>
12 * All rights reserved.
14 * Author: Jack Lange <jarusl@cs.northwestern.edu>
16 * This is free software. You are permitted to use,
17 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
21 #include <palacios/vmm.h>
22 #include <palacios/vmm_dev_mgr.h>
23 #include <palacios/vmm_intr.h>
25 #include <devices/pci.h>
26 #include <devices/southbridge.h>
33 uint8_t times_16bit : 2;
34 uint8_t enable_16bit : 1;
35 uint8_t times_8bit : 3;
36 uint8_t enable_8bit : 1;
38 } __attribute__((packed));
39 } __attribute__((packed));
40 } __attribute__((packed));
46 uint8_t rtc_addr_en : 1;
47 uint8_t kb_ctrl_en : 1;
48 uint8_t bioscs_wprot_en : 1;
50 uint8_t irq12_mouse_fn_en : 1;
51 uint8_t coproc_err_fn_en : 1;
52 uint8_t lower_bios_en : 1;
53 uint8_t ext_bios_en : 1;
54 uint8_t apic_chip_sel : 1;
55 uint8_t piix_rsvd : 7;
56 } __attribute__((packed));
57 } __attribute__((packed));
58 } __attribute__((packed));
61 struct pirq_route_ctrl_req {
65 uint8_t irq_routing : 4;
67 uint8_t irq_route_en : 1;
68 } __attribute__((packed));
69 } __attribute__((packed));
70 } __attribute__((packed));
72 struct top_of_mem_reg {
77 uint8_t isadma_reg_fwd_en : 1;
78 uint8_t piix_rsvd : 1;
79 uint8_t isadma_lo_bios_fwd_en : 1;
80 uint8_t top_of_mem : 4;
81 } __attribute__((packed));
82 } __attribute__((packed));
83 } __attribute__((packed));
85 // Miscellaneous Status register
86 struct misc_stat_reg {
90 uint8_t isa_clk_div : 1;
91 uint8_t piix_rsvd1 : 1;
92 uint8_t pci_hdr_type_en : 1;
96 uint8_t ext_sm_mode_en : 1;
97 uint8_t nb_retry_en : 1;
99 uint8_t serr_gen_delayed_tranx : 1;
100 } __attribute__((packed));
101 } __attribute__((packed));
102 } __attribute__((packed));
106 // Motherboard Device IRQ route control register
107 struct mb_irq_ctrl_reg {
111 uint8_t irq_routing : 4;
114 uint8_t irq_sharing_en : 1;
115 uint8_t irq_routing_en : 1;
116 } __attribute__((packed));
117 } __attribute__((packed));
118 } __attribute__((packed));
120 // Motherboard Device DMA control register
121 struct mb_dma_ctrl_reg {
125 uint8_t type_f_dma_routing : 3;
126 uint8_t piix_rsvd : 1;
128 uint8_t type_f_dma_buf_en : 1;
129 } __attribute__((packed));
130 } __attribute__((packed));
131 } __attribute__((packed));
134 // Programmable Chip Select Control Register
135 struct prg_chip_sel_ctrl_reg {
139 uint8_t pcs_addr_mask : 2;
140 uint16_t pcs_addr : 14;
141 } __attribute__((packed));
142 } __attribute__((packed));
143 } __attribute__((packed));
146 // APIC base address relocation register
147 struct apic_base_addr_reg {
151 uint8_t y_base_addr : 2;
152 uint8_t x_base_addr : 4;
153 uint8_t a12_mask : 1;
155 } __attribute__((packed));
156 } __attribute__((packed));
157 } __attribute__((packed));
160 // Deterministic Latency control register
161 struct deter_lat_ctrl_reg {
165 uint8_t delayed_trans_en : 1;
166 uint8_t pass_release_en : 1;
167 uint8_t usb_pass_release_en : 1;
168 uint8_t serr_gen_trans_tmout_en : 1;
170 } __attribute__((packed));
171 } __attribute__((packed));
172 } __attribute__((packed));
174 // SMI Control Register
175 struct smi_ctrl_reg {
179 uint8_t smi_gate : 1;
180 uint8_t stpclk_sig_en : 1;
181 uint8_t stpclk_scaling_en : 1;
182 uint8_t fast_off_tmr_freeze : 2;
184 } __attribute__((packed));
185 } __attribute__((packed));
186 } __attribute__((packed));
188 // SMI Enable register
189 struct smi_enable_reg {
193 uint8_t irq1_smi_en : 1; // (keyboard irq)
194 uint8_t irq3_smi_en : 1; // (COM1/COM3/Mouse irq)
195 uint8_t irq4_smi_en : 1; // (COM2/COM4/Mouse irq)
196 uint8_t irq8_smi_en : 1; // (RTC irq)
197 uint8_t irq12_smi_en : 1; // (PS/2 mouse irq)
198 uint8_t fast_off_tmr_en : 1;
199 uint8_t ext_smi_en : 1;
200 uint8_t apic_wr_smi_en : 1;
201 uint8_t legacy_usb_smi_en : 1;
203 } __attribute__((packed));
204 } __attribute__((packed));
205 } __attribute__((packed));
208 // System Event Enable register
209 struct sys_evt_en_reg {
213 uint8_t firq0_en : 1;
214 uint8_t firq1_en : 1;
216 uint8_t firq3_en : 1;
217 uint8_t firq4_en : 1;
218 uint8_t firq5_en : 1;
219 uint8_t firq6_en : 1;
220 uint8_t firq7_en : 1;
221 uint8_t firq8_en : 1;
222 uint8_t firq9_en : 1;
223 uint8_t firq10_en : 1;
224 uint8_t firq11_en : 1;
225 uint8_t firq12_en : 1;
226 uint8_t firq13_en : 1;
227 uint8_t firq14_en : 1;
228 uint8_t firq15_en : 1;
230 uint8_t fast_off_apic_en : 1;
231 uint8_t fast_off_nmi_en : 1;
233 uint8_t fast_off_smi_en : 1;
234 } __attribute__((packed));
235 } __attribute__((packed));
236 } __attribute__((packed));
239 // SMI Request Register
244 uint8_t irq1_req_smi_stat : 1;
245 uint8_t irq3_req_smi_stat : 1;
246 uint8_t irq4_req_smi_stat : 1;
247 uint8_t irq8_req_smi_stat : 1;
248 uint8_t irq12_req_smi_stat : 1;
249 uint8_t fast_off_tmr_exp_stat : 1;
250 uint8_t extsmi_stat : 1;
251 uint8_t apm_smi_stat : 1;
252 uint8_t legacy_usb_smi_stat : 1;
254 } __attribute__((packed));
255 } __attribute__((packed));
256 } __attribute__((packed));
259 struct piix3_config_space {
260 uint8_t rsvd1[12]; // 0x40 - 0x4b
262 // ISA I/O Recovery timer register
263 uint8_t iort; // 0x4c (default 0x4d)
264 uint8_t rsvd2; // 0x4d
266 // X-Bus Chip select register
267 uint16_t xbcs; // 0x4e - 0x4f (default: 0x03)
268 uint8_t rsvd3[16]; // 0x50 - 0x5f
270 // pirq route control register (IRQs A-D)
271 uint8_t pirq_rc[4]; // 0x60 - 0x63 (default: 0x80)
272 uint8_t rsvd4[5]; // 0x64 - 0x68
274 // top of memory register
275 uint8_t top_of_mem; // 0x69 (default: 0x02)
277 // Miscellaneous status register
278 uint16_t mstat; // 0x6A - 0x6B (default: undefined)
279 uint8_t rsvd5[4]; // 0x6c - 0x6f
281 // Motherboard device IRQ route control register
282 uint8_t mbirq0; // 0x70 (default: 0x80)
283 uint8_t rsvd6; // 0x71 (piix only)
284 uint8_t rsvd7[4]; // 0x72 - 0x75
286 // Motherboard Device DMA Control registers
287 uint8_t mbdma0; // 0x76 (default: 0x0c)
288 uint8_t mbdma1; // 0x77 (default: 0x0c)
290 // Programmable Chip Select Control Register
291 uint16_t pcsc; // 0x78 - 0x79 (default: 0x0002)
292 uint8_t rsvd8[6]; // 0x7A - 0x7F
294 // APIC base address relocation register
295 uint8_t apicbase; // 0x80 (default: 0x00)
296 uint8_t rsvd9; // 0x81
299 // Deterministic Latency control register
300 uint8_t dlc; // 0x82 (default: 0x00)
301 uint8_t rsvd10[29]; // 0x83 - 0x9f
304 // SMI Control Register
305 uint8_t smicntl; // 0xa0 (default: 0x08)
306 uint8_t rsvd11; // 0xa1
308 // SMI Enable register
309 uint16_t smien; // 0xa2 - 0xa3 (default: 0x0000)
311 // System Event Enable register
312 uint32_t see; // 0xa4 - 0xa7 (default: 0x00000000)
314 // Fast off timer register
315 uint8_t ftmr; // 0xa8 (default: 0x0f)
316 uint8_t rsvd12; // 0xa9
318 // SMI Request Register
319 uint16_t smireq; // 0xaa - 0xab (default: 0x0000)
321 // Clock Scale stpclk low timer
322 uint8_t ctltmr; // 0xac (default: 0x00)
323 uint8_t rsvd13; // 0xad
325 // Slock Scale STPCLK high timer
326 uint8_t cthtmr; // 0xae (default: 0x00)
328 } __attribute__((packed));
332 static int reset_piix3(struct v3_southbridge * piix3) {
333 struct pci_device * pci_dev = piix3->southbridge_pci;
334 struct piix3_config_space * piix3_cfg = (struct piix3_config_space *)(pci_dev->config_data);
336 pci_dev->config_header.command = 0x0007; // master, memory and I/O
337 pci_dev->config_header.status = 0x0200;
339 piix3_cfg->iort = 0x4d;
340 piix3_cfg->xbcs = 0x0003;
341 piix3_cfg->pirq_rc[0] = 0x80;
342 piix3_cfg->pirq_rc[1] = 0x80;
343 piix3_cfg->pirq_rc[2] = 0x80;
344 piix3_cfg->pirq_rc[3] = 0x80;
345 piix3_cfg->top_of_mem = 0x02;
346 piix3_cfg->mbirq0 = 0x80;
347 piix3_cfg->mbdma0 = 0x0c;
348 piix3_cfg->mbdma1 = 0x0c;
349 piix3_cfg->pcsc = 0x0002;
350 piix3_cfg->apicbase = 0x00;
351 piix3_cfg->dlc = 0x00;
352 piix3_cfg->smicntl = 0x08;
353 piix3_cfg->smien = 0x0000;
354 piix3_cfg->see = 0x00000000;
355 piix3_cfg->ftmr = 0x0f;
356 piix3_cfg->smireq = 0x0000;
357 piix3_cfg->ctltmr = 0x00;
358 piix3_cfg->cthtmr = 0x00;
364 //irq is pirq_rc[intr_pin + pci_dev_num - 1] & 0xf
369 uint8_t disabled : 1; // (1=disabled, 0=enabled)
374 static int raise_pci_irq(struct pci_device * pci_dev, void * dev_data, struct v3_irq * vec) {
375 struct v3_southbridge * piix3 = dev_data;
376 struct pci_device * piix3_pci = piix3->southbridge_pci;
377 struct piix3_config_space * piix3_cfg = (struct piix3_config_space *)(piix3_pci->config_data);
378 int intr_pin = pci_dev->config_header.intr_pin - 1;
379 int irq_index = (intr_pin + pci_dev->dev_num - 1) & 0x3;
380 struct v3_irq irq; // Make a copy of the irq state because we will switch the irq number
383 irq.private_data = vec->private_data;
386 PrintError(info->vm_info, info, "Raising PCI dev %d intr %d via IOAPIC as IRQ %d and via PIRQ as IRQ %d on VM %p\n",
387 pci_dev->dev_num, pci_dev->config_header.intr_pin,
389 piix3_cfg->pirq_rc[irq_index], piix3->vm);
392 // deliver first by PIRQ, if it exists
394 if (piix3_cfg->pirq_rc[irq_index] < 16) {
395 irq.irq = piix3_cfg->pirq_rc[irq_index] & 0xf;
397 // V3_Print(info->vm_info, info, "Raising PIIX IRQ %d\n", irq.irq);
398 v3_raise_acked_irq(piix3->vm, irq);
403 // deliver next via the PCI0 to ioapic mapping defined in the
404 // mptable (ioapic, pins 16->19 are used for PCI0)
405 // ideally this would check to verify that an ioapic is actually available
406 irq.irq = (irq_index + 1) + 16;
407 // V3_Print(info->vm_info, info, "Raising PIIX IRQ (#2) %d\n", irq.irq);
408 v3_raise_acked_irq(piix3->vm, irq);
416 static int lower_pci_irq(struct pci_device * pci_dev, void * dev_data, struct v3_irq * vec) {
417 struct v3_southbridge * piix3 = dev_data;
418 struct pci_device * piix3_pci = piix3->southbridge_pci;
419 struct piix3_config_space * piix3_cfg = (struct piix3_config_space *)(piix3_pci->config_data);
420 int intr_pin = pci_dev->config_header.intr_pin - 1;
421 int irq_index = (intr_pin + pci_dev->dev_num - 1) & 0x3;
422 struct v3_irq irq; // Make a copy of the irq state because we will switch the irq number
425 irq.private_data = vec->private_data;
426 // PrintError(info->vm_info, info, "Lowering PCI IRQ %d\n", piix3_cfg->pirq_rc[irq_index]);
428 // First, lower the pin on the ioapic
429 irq.irq = (irq_index + 1) + 16;
430 v3_lower_acked_irq(piix3->vm, irq);
432 // Next, lower whatever we asserted by the PIRQs
433 if (piix3_cfg->pirq_rc[irq_index] < 16) {
434 irq.irq = piix3_cfg->pirq_rc[irq_index] & 0xf;
435 v3_lower_acked_irq(piix3->vm, irq);
445 static int piix_free(struct v3_southbridge * piix3) {
454 static struct v3_device_ops dev_ops = {
455 .free = (int (*)(void *))piix_free,
461 static int setup_pci(struct v3_southbridge * piix3) {
462 struct pci_device * pci_dev = NULL;
463 struct v3_pci_bar bars[6];
467 for (i = 0; i < 6; i++) {
468 bars[i].type = PCI_BAR_NONE;
471 pci_dev = v3_pci_register_device(piix3->pci_bus, PCI_MULTIFUNCTION,
474 NULL, NULL, NULL, NULL, piix3);
475 if (pci_dev == NULL) {
476 PrintError(VM_NONE, VCORE_NONE, "Could not register PCI Device for PIIX3\n");
480 pci_dev->config_header.vendor_id = 0x8086;
481 pci_dev->config_header.device_id = 0x7000; // PIIX4 is 0x7001
482 pci_dev->config_header.class = PCI_CLASS_BRIDGE;
483 pci_dev->config_header.subclass = PCI_BRIDGE_SUBCLASS_PCI_ISA;
485 piix3->southbridge_pci = pci_dev;
487 v3_pci_set_irq_bridge(piix3->pci_bus, bus_num, raise_pci_irq, lower_pci_irq, piix3);
494 static int piix3_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
495 struct v3_southbridge * piix3 = (struct v3_southbridge *)V3_Malloc(sizeof(struct v3_southbridge));
496 struct vm_device * dev = NULL;
497 struct vm_device * pci = v3_find_dev(vm, v3_cfg_val(cfg, "bus"));
498 char * dev_id = v3_cfg_val(cfg, "ID");
501 PrintError(vm, VCORE_NONE, "Cannot allocate in init\n");
506 PrintError(vm, VCORE_NONE, "Could not find PCI device\n");
510 piix3->pci_bus = pci;
511 piix3->type = V3_SB_PIIX3;
514 dev = v3_add_device(vm, dev_id, &dev_ops, piix3);
517 PrintError(vm, VCORE_NONE, "Could not attach device %s\n", dev_id);
522 PrintDebug(vm, VCORE_NONE, "Created PIIX3\n");
524 if (setup_pci(piix3) == -1) {
525 v3_remove_device(dev);
533 device_register("PIIX3", piix3_init)