2 * QEMU TEWS TPCI200 IndustryPack carrier emulation
4 * Copyright (C) 2012 Igalia, S.L.
5 * Author: Alberto Garcia <berto@igalia.com>
7 * This code is licensed under the GNU GPL v2 or (at your option) any
11 #include "qemu/osdep.h"
12 #include "hw/ipack/ipack.h"
13 #include "hw/pci/pci.h"
14 #include "qemu/bitops.h"
16 /* #define DEBUG_TPCI */
19 #define DPRINTF(fmt, ...) \
20 do { fprintf(stderr, "TPCI200: " fmt, ## __VA_ARGS__); } while (0)
22 #define DPRINTF(fmt, ...) do { } while (0)
28 #define IP_INT_SPACE 3
29 #define IP_IO_SPACE_ADDR_MASK 0x7F
30 #define IP_ID_SPACE_ADDR_MASK 0x3F
31 #define IP_INT_SPACE_ADDR_MASK 0x3F
33 #define STATUS_INT(IP, INTNO) BIT((IP) * 2 + (INTNO))
34 #define STATUS_TIME(IP) BIT((IP) + 12)
35 #define STATUS_ERR_ANY 0xF00
37 #define CTRL_CLKRATE BIT(0)
38 #define CTRL_RECOVER BIT(1)
39 #define CTRL_TIME_INT BIT(2)
40 #define CTRL_ERR_INT BIT(3)
41 #define CTRL_INT_EDGE(INTNO) BIT(4 + (INTNO))
42 #define CTRL_INT(INTNO) BIT(6 + (INTNO))
44 #define REG_REV_ID 0x00
45 #define REG_IP_A_CTRL 0x02
46 #define REG_IP_B_CTRL 0x04
47 #define REG_IP_C_CTRL 0x06
48 #define REG_IP_D_CTRL 0x08
49 #define REG_RESET 0x0A
50 #define REG_STATUS 0x0C
51 #define IP_N_FROM_REG(REG) ((REG) / 2 - 1)
63 uint8_t ctrl
[N_MODULES
];
68 #define TYPE_TPCI200 "tpci200"
70 #define TPCI200(obj) \
71 OBJECT_CHECK(TPCI200State, (obj), TYPE_TPCI200)
73 static const uint8_t local_config_regs
[] = {
74 0x00, 0xFF, 0xFF, 0x0F, 0x00, 0xFC, 0xFF, 0x0F, 0x00, 0x00, 0x00,
75 0x0E, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
76 0x00, 0x08, 0x01, 0x00, 0x00, 0x04, 0x01, 0x00, 0x00, 0x00, 0x01,
77 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0xA0, 0x60, 0x41, 0xD4,
78 0xA2, 0x20, 0x41, 0x14, 0xA2, 0x20, 0x41, 0x14, 0xA2, 0x20, 0x01,
79 0x14, 0x00, 0x00, 0x00, 0x00, 0x81, 0x00, 0x00, 0x08, 0x01, 0x02,
80 0x00, 0x04, 0x01, 0x00, 0x00, 0x01, 0x01, 0x00, 0x80, 0x02, 0x41,
81 0x00, 0x00, 0x00, 0x00, 0x40, 0x7A, 0x00, 0x52, 0x92, 0x24, 0x02
84 static void adjust_addr(bool big_endian
, hwaddr
*addr
, unsigned size
)
86 /* During 8 bit access in big endian mode,
87 odd and even addresses are swapped */
88 if (big_endian
&& size
== 1) {
93 static uint64_t adjust_value(bool big_endian
, uint64_t *val
, unsigned size
)
95 /* Local spaces only support 8/16 bit access,
96 * so there's no need to care for sizes > 2 */
97 if (big_endian
&& size
== 2) {
103 static void tpci200_set_irq(void *opaque
, int intno
, int level
)
105 IPackDevice
*ip
= opaque
;
106 IPackBus
*bus
= IPACK_BUS(qdev_get_parent_bus(DEVICE(ip
)));
107 PCIDevice
*pcidev
= PCI_DEVICE(BUS(bus
)->parent
);
108 TPCI200State
*dev
= TPCI200(pcidev
);
109 unsigned ip_n
= ip
->slot
;
110 uint16_t prev_status
= dev
->status
;
112 assert(ip
->slot
>= 0 && ip
->slot
< N_MODULES
);
114 /* The requested interrupt must be enabled in the IP CONTROL
116 if (!(dev
->ctrl
[ip_n
] & CTRL_INT(intno
))) {
120 /* Update the interrupt status in the IP STATUS register */
122 dev
->status
|= STATUS_INT(ip_n
, intno
);
124 dev
->status
&= ~STATUS_INT(ip_n
, intno
);
127 /* Return if there are no changes */
128 if (dev
->status
== prev_status
) {
132 DPRINTF("IP %u INT%u#: %u\n", ip_n
, intno
, level
);
134 /* Check if the interrupt is edge sensitive */
135 if (dev
->ctrl
[ip_n
] & CTRL_INT_EDGE(intno
)) {
137 pci_set_irq(&dev
->dev
, !dev
->int_set
);
138 pci_set_irq(&dev
->dev
, dev
->int_set
);
142 uint16_t level_status
= dev
->status
;
144 /* Check if there are any level sensitive interrupts set by
145 removing the ones that are edge sensitive from the status
147 for (i
= 0; i
< N_MODULES
; i
++) {
148 for (j
= 0; j
< 2; j
++) {
149 if (dev
->ctrl
[i
] & CTRL_INT_EDGE(j
)) {
150 level_status
&= ~STATUS_INT(i
, j
);
155 if (level_status
&& !dev
->int_set
) {
156 pci_irq_assert(&dev
->dev
);
158 } else if (!level_status
&& dev
->int_set
) {
159 pci_irq_deassert(&dev
->dev
);
165 static uint64_t tpci200_read_cfg(void *opaque
, hwaddr addr
, unsigned size
)
167 TPCI200State
*s
= opaque
;
169 if (addr
< ARRAY_SIZE(local_config_regs
)) {
170 ret
= local_config_regs
[addr
];
172 /* Endianness is stored in the first bit of these registers */
173 if ((addr
== 0x2b && s
->big_endian
[0]) ||
174 (addr
== 0x2f && s
->big_endian
[1]) ||
175 (addr
== 0x33 && s
->big_endian
[2])) {
178 DPRINTF("Read from LCR 0x%x: 0x%x\n", (unsigned) addr
, (unsigned) ret
);
182 static void tpci200_write_cfg(void *opaque
, hwaddr addr
, uint64_t val
,
185 TPCI200State
*s
= opaque
;
186 /* Endianness is stored in the first bit of these registers */
187 if (addr
== 0x2b || addr
== 0x2f || addr
== 0x33) {
188 unsigned las
= (addr
- 0x2b) / 4;
189 s
->big_endian
[las
] = val
& 1;
190 DPRINTF("LAS%u big endian mode: %u\n", las
, (unsigned) val
& 1);
192 DPRINTF("Write to LCR 0x%x: 0x%x\n", (unsigned) addr
, (unsigned) val
);
196 static uint64_t tpci200_read_las0(void *opaque
, hwaddr addr
, unsigned size
)
198 TPCI200State
*s
= opaque
;
204 DPRINTF("Read REVISION ID\n"); /* Current value is 0x00 */
212 unsigned ip_n
= IP_N_FROM_REG(addr
);
214 DPRINTF("Read IP %c CONTROL: 0x%x\n", 'A' + ip_n
, (unsigned) ret
);
219 DPRINTF("Read RESET\n"); /* Not implemented */
224 DPRINTF("Read STATUS: 0x%x\n", (unsigned) ret
);
229 DPRINTF("Unsupported read from LAS0 0x%x\n", (unsigned) addr
);
233 return adjust_value(s
->big_endian
[0], &ret
, size
);
236 static void tpci200_write_las0(void *opaque
, hwaddr addr
, uint64_t val
,
239 TPCI200State
*s
= opaque
;
241 adjust_value(s
->big_endian
[0], &val
, size
);
246 DPRINTF("Write Revision ID: 0x%x\n", (unsigned) val
); /* No effect */
254 unsigned ip_n
= IP_N_FROM_REG(addr
);
256 DPRINTF("Write IP %c CONTROL: 0x%x\n", 'A' + ip_n
, (unsigned) val
);
261 DPRINTF("Write RESET: 0x%x\n", (unsigned) val
); /* Not implemented */
268 for (i
= 0; i
< N_MODULES
; i
++) {
269 IPackDevice
*ip
= ipack_device_find(&s
->bus
, i
);
272 if (val
& STATUS_INT(i
, 0)) {
273 DPRINTF("Clear IP %c INT0# status\n", 'A' + i
);
274 qemu_irq_lower(ip
->irq
[0]);
276 if (val
& STATUS_INT(i
, 1)) {
277 DPRINTF("Clear IP %c INT1# status\n", 'A' + i
);
278 qemu_irq_lower(ip
->irq
[1]);
282 if (val
& STATUS_TIME(i
)) {
283 DPRINTF("Clear IP %c timeout\n", 'A' + i
);
284 s
->status
&= ~STATUS_TIME(i
);
288 if (val
& STATUS_ERR_ANY
) {
289 DPRINTF("Unexpected write to STATUS register: 0x%x\n",
297 DPRINTF("Unsupported write to LAS0 0x%x: 0x%x\n",
298 (unsigned) addr
, (unsigned) val
);
303 static uint64_t tpci200_read_las1(void *opaque
, hwaddr addr
, unsigned size
)
305 TPCI200State
*s
= opaque
;
308 unsigned ip_n
, space
;
311 adjust_addr(s
->big_endian
[1], &addr
, size
);
314 * The address is divided into the IP module number (0-4), the IP
315 * address space (I/O, ID, INT) and the offset within that space.
318 space
= (addr
>> 6) & 3;
319 ip
= ipack_device_find(&s
->bus
, ip_n
);
322 DPRINTF("Read LAS1: IP module %u not installed\n", ip_n
);
324 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
328 offset
= addr
& IP_ID_SPACE_ADDR_MASK
;
330 ret
= k
->id_read(ip
, offset
);
335 offset
= addr
& IP_INT_SPACE_ADDR_MASK
;
337 /* Read address 0 to ACK IP INT0# and address 2 to ACK IP INT1# */
338 if (offset
== 0 || offset
== 2) {
339 unsigned intno
= offset
/ 2;
340 bool int_set
= s
->status
& STATUS_INT(ip_n
, intno
);
341 bool int_edge_sensitive
= s
->ctrl
[ip_n
] & CTRL_INT_EDGE(intno
);
342 if (int_set
&& !int_edge_sensitive
) {
343 qemu_irq_lower(ip
->irq
[intno
]);
348 ret
= k
->int_read(ip
, offset
);
353 offset
= addr
& IP_IO_SPACE_ADDR_MASK
;
355 ret
= k
->io_read(ip
, offset
);
361 return adjust_value(s
->big_endian
[1], &ret
, size
);
364 static void tpci200_write_las1(void *opaque
, hwaddr addr
, uint64_t val
,
367 TPCI200State
*s
= opaque
;
369 unsigned ip_n
, space
;
372 adjust_addr(s
->big_endian
[1], &addr
, size
);
373 adjust_value(s
->big_endian
[1], &val
, size
);
376 * The address is divided into the IP module number, the IP
377 * address space (I/O, ID, INT) and the offset within that space.
380 space
= (addr
>> 6) & 3;
381 ip
= ipack_device_find(&s
->bus
, ip_n
);
384 DPRINTF("Write LAS1: IP module %u not installed\n", ip_n
);
386 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
390 offset
= addr
& IP_ID_SPACE_ADDR_MASK
;
392 k
->id_write(ip
, offset
, val
);
397 offset
= addr
& IP_INT_SPACE_ADDR_MASK
;
399 k
->int_write(ip
, offset
, val
);
404 offset
= addr
& IP_IO_SPACE_ADDR_MASK
;
406 k
->io_write(ip
, offset
, val
);
413 static uint64_t tpci200_read_las2(void *opaque
, hwaddr addr
, unsigned size
)
415 TPCI200State
*s
= opaque
;
421 adjust_addr(s
->big_endian
[2], &addr
, size
);
424 * The address is divided into the IP module number and the offset
425 * within the IP module MEM space.
428 offset
= addr
& 0x7fffff;
429 ip
= ipack_device_find(&s
->bus
, ip_n
);
432 DPRINTF("Read LAS2: IP module %u not installed\n", ip_n
);
434 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
436 ret
= k
->mem_read16(ip
, offset
);
440 return adjust_value(s
->big_endian
[2], &ret
, size
);
443 static void tpci200_write_las2(void *opaque
, hwaddr addr
, uint64_t val
,
446 TPCI200State
*s
= opaque
;
451 adjust_addr(s
->big_endian
[2], &addr
, size
);
452 adjust_value(s
->big_endian
[2], &val
, size
);
455 * The address is divided into the IP module number and the offset
456 * within the IP module MEM space.
459 offset
= addr
& 0x7fffff;
460 ip
= ipack_device_find(&s
->bus
, ip_n
);
463 DPRINTF("Write LAS2: IP module %u not installed\n", ip_n
);
465 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
466 if (k
->mem_write16
) {
467 k
->mem_write16(ip
, offset
, val
);
472 static uint64_t tpci200_read_las3(void *opaque
, hwaddr addr
, unsigned size
)
474 TPCI200State
*s
= opaque
;
478 * The address is divided into the IP module number and the offset
479 * within the IP module MEM space.
481 unsigned ip_n
= addr
>> 22;
482 uint32_t offset
= addr
& 0x3fffff;
484 ip
= ipack_device_find(&s
->bus
, ip_n
);
487 DPRINTF("Read LAS3: IP module %u not installed\n", ip_n
);
489 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
491 ret
= k
->mem_read8(ip
, offset
);
498 static void tpci200_write_las3(void *opaque
, hwaddr addr
, uint64_t val
,
501 TPCI200State
*s
= opaque
;
504 * The address is divided into the IP module number and the offset
505 * within the IP module MEM space.
507 unsigned ip_n
= addr
>> 22;
508 uint32_t offset
= addr
& 0x3fffff;
510 ip
= ipack_device_find(&s
->bus
, ip_n
);
513 DPRINTF("Write LAS3: IP module %u not installed\n", ip_n
);
515 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
517 k
->mem_write8(ip
, offset
, val
);
522 static const MemoryRegionOps tpci200_cfg_ops
= {
523 .read
= tpci200_read_cfg
,
524 .write
= tpci200_write_cfg
,
525 .endianness
= DEVICE_NATIVE_ENDIAN
,
527 .min_access_size
= 1,
531 .min_access_size
= 1,
536 static const MemoryRegionOps tpci200_las0_ops
= {
537 .read
= tpci200_read_las0
,
538 .write
= tpci200_write_las0
,
539 .endianness
= DEVICE_NATIVE_ENDIAN
,
541 .min_access_size
= 2,
546 static const MemoryRegionOps tpci200_las1_ops
= {
547 .read
= tpci200_read_las1
,
548 .write
= tpci200_write_las1
,
549 .endianness
= DEVICE_NATIVE_ENDIAN
,
551 .min_access_size
= 1,
556 static const MemoryRegionOps tpci200_las2_ops
= {
557 .read
= tpci200_read_las2
,
558 .write
= tpci200_write_las2
,
559 .endianness
= DEVICE_NATIVE_ENDIAN
,
561 .min_access_size
= 1,
566 static const MemoryRegionOps tpci200_las3_ops
= {
567 .read
= tpci200_read_las3
,
568 .write
= tpci200_write_las3
,
569 .endianness
= DEVICE_NATIVE_ENDIAN
,
571 .min_access_size
= 1,
576 static void tpci200_realize(PCIDevice
*pci_dev
, Error
**errp
)
578 TPCI200State
*s
= TPCI200(pci_dev
);
579 uint8_t *c
= s
->dev
.config
;
581 pci_set_word(c
+ PCI_COMMAND
, 0x0003);
582 pci_set_word(c
+ PCI_STATUS
, 0x0280);
584 pci_set_byte(c
+ PCI_INTERRUPT_PIN
, 0x01); /* Interrupt pin A */
586 pci_set_byte(c
+ PCI_CAPABILITY_LIST
, 0x40);
587 pci_set_long(c
+ 0x40, 0x48014801);
588 pci_set_long(c
+ 0x48, 0x00024C06);
589 pci_set_long(c
+ 0x4C, 0x00000003);
591 memory_region_init_io(&s
->mmio
, OBJECT(s
), &tpci200_cfg_ops
,
592 s
, "tpci200_mmio", 128);
593 memory_region_init_io(&s
->io
, OBJECT(s
), &tpci200_cfg_ops
,
594 s
, "tpci200_io", 128);
595 memory_region_init_io(&s
->las0
, OBJECT(s
), &tpci200_las0_ops
,
596 s
, "tpci200_las0", 256);
597 memory_region_init_io(&s
->las1
, OBJECT(s
), &tpci200_las1_ops
,
598 s
, "tpci200_las1", 1024);
599 memory_region_init_io(&s
->las2
, OBJECT(s
), &tpci200_las2_ops
,
600 s
, "tpci200_las2", 1024*1024*32);
601 memory_region_init_io(&s
->las3
, OBJECT(s
), &tpci200_las3_ops
,
602 s
, "tpci200_las3", 1024*1024*16);
603 pci_register_bar(&s
->dev
, 0, PCI_BASE_ADDRESS_SPACE_MEMORY
, &s
->mmio
);
604 pci_register_bar(&s
->dev
, 1, PCI_BASE_ADDRESS_SPACE_IO
, &s
->io
);
605 pci_register_bar(&s
->dev
, 2, PCI_BASE_ADDRESS_SPACE_MEMORY
, &s
->las0
);
606 pci_register_bar(&s
->dev
, 3, PCI_BASE_ADDRESS_SPACE_MEMORY
, &s
->las1
);
607 pci_register_bar(&s
->dev
, 4, PCI_BASE_ADDRESS_SPACE_MEMORY
, &s
->las2
);
608 pci_register_bar(&s
->dev
, 5, PCI_BASE_ADDRESS_SPACE_MEMORY
, &s
->las3
);
610 ipack_bus_new_inplace(&s
->bus
, sizeof(s
->bus
), DEVICE(pci_dev
), NULL
,
611 N_MODULES
, tpci200_set_irq
);
614 static const VMStateDescription vmstate_tpci200
= {
617 .minimum_version_id
= 1,
618 .fields
= (VMStateField
[]) {
619 VMSTATE_PCI_DEVICE(dev
, TPCI200State
),
620 VMSTATE_BOOL_ARRAY(big_endian
, TPCI200State
, 3),
621 VMSTATE_UINT8_ARRAY(ctrl
, TPCI200State
, N_MODULES
),
622 VMSTATE_UINT16(status
, TPCI200State
),
623 VMSTATE_UINT8(int_set
, TPCI200State
),
624 VMSTATE_END_OF_LIST()
628 static void tpci200_class_init(ObjectClass
*klass
, void *data
)
630 DeviceClass
*dc
= DEVICE_CLASS(klass
);
631 PCIDeviceClass
*k
= PCI_DEVICE_CLASS(klass
);
633 k
->realize
= tpci200_realize
;
634 k
->vendor_id
= PCI_VENDOR_ID_TEWS
;
635 k
->device_id
= PCI_DEVICE_ID_TEWS_TPCI200
;
636 k
->class_id
= PCI_CLASS_BRIDGE_OTHER
;
637 k
->subsystem_vendor_id
= PCI_VENDOR_ID_TEWS
;
638 k
->subsystem_id
= 0x300A;
639 set_bit(DEVICE_CATEGORY_INPUT
, dc
->categories
);
640 dc
->desc
= "TEWS TPCI200 IndustryPack carrier";
641 dc
->vmsd
= &vmstate_tpci200
;
644 static const TypeInfo tpci200_info
= {
645 .name
= TYPE_TPCI200
,
646 .parent
= TYPE_PCI_DEVICE
,
647 .instance_size
= sizeof(TPCI200State
),
648 .class_init
= tpci200_class_init
,
649 .interfaces
= (InterfaceInfo
[]) {
650 { INTERFACE_CONVENTIONAL_PCI_DEVICE
},
655 static void tpci200_register_types(void)
657 type_register_static(&tpci200_info
);
660 type_init(tpci200_register_types
)