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 "qemu/units.h"
13 #include "hw/ipack/ipack.h"
14 #include "hw/pci/pci.h"
15 #include "qemu/bitops.h"
17 /* #define DEBUG_TPCI */
20 #define DPRINTF(fmt, ...) \
21 do { fprintf(stderr, "TPCI200: " fmt, ## __VA_ARGS__); } while (0)
23 #define DPRINTF(fmt, ...) do { } while (0)
29 #define IP_INT_SPACE 3
30 #define IP_IO_SPACE_ADDR_MASK 0x7F
31 #define IP_ID_SPACE_ADDR_MASK 0x3F
32 #define IP_INT_SPACE_ADDR_MASK 0x3F
34 #define STATUS_INT(IP, INTNO) BIT((IP) * 2 + (INTNO))
35 #define STATUS_TIME(IP) BIT((IP) + 12)
36 #define STATUS_ERR_ANY 0xF00
38 #define CTRL_CLKRATE BIT(0)
39 #define CTRL_RECOVER BIT(1)
40 #define CTRL_TIME_INT BIT(2)
41 #define CTRL_ERR_INT BIT(3)
42 #define CTRL_INT_EDGE(INTNO) BIT(4 + (INTNO))
43 #define CTRL_INT(INTNO) BIT(6 + (INTNO))
45 #define REG_REV_ID 0x00
46 #define REG_IP_A_CTRL 0x02
47 #define REG_IP_B_CTRL 0x04
48 #define REG_IP_C_CTRL 0x06
49 #define REG_IP_D_CTRL 0x08
50 #define REG_RESET 0x0A
51 #define REG_STATUS 0x0C
52 #define IP_N_FROM_REG(REG) ((REG) / 2 - 1)
64 uint8_t ctrl
[N_MODULES
];
69 #define TYPE_TPCI200 "tpci200"
71 #define TPCI200(obj) \
72 OBJECT_CHECK(TPCI200State, (obj), TYPE_TPCI200)
74 static const uint8_t local_config_regs
[] = {
75 0x00, 0xFF, 0xFF, 0x0F, 0x00, 0xFC, 0xFF, 0x0F, 0x00, 0x00, 0x00,
76 0x0E, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
77 0x00, 0x08, 0x01, 0x00, 0x00, 0x04, 0x01, 0x00, 0x00, 0x00, 0x01,
78 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0xA0, 0x60, 0x41, 0xD4,
79 0xA2, 0x20, 0x41, 0x14, 0xA2, 0x20, 0x41, 0x14, 0xA2, 0x20, 0x01,
80 0x14, 0x00, 0x00, 0x00, 0x00, 0x81, 0x00, 0x00, 0x08, 0x01, 0x02,
81 0x00, 0x04, 0x01, 0x00, 0x00, 0x01, 0x01, 0x00, 0x80, 0x02, 0x41,
82 0x00, 0x00, 0x00, 0x00, 0x40, 0x7A, 0x00, 0x52, 0x92, 0x24, 0x02
85 static void adjust_addr(bool big_endian
, hwaddr
*addr
, unsigned size
)
87 /* During 8 bit access in big endian mode,
88 odd and even addresses are swapped */
89 if (big_endian
&& size
== 1) {
94 static uint64_t adjust_value(bool big_endian
, uint64_t *val
, unsigned size
)
96 /* Local spaces only support 8/16 bit access,
97 * so there's no need to care for sizes > 2 */
98 if (big_endian
&& size
== 2) {
104 static void tpci200_set_irq(void *opaque
, int intno
, int level
)
106 IPackDevice
*ip
= opaque
;
107 IPackBus
*bus
= IPACK_BUS(qdev_get_parent_bus(DEVICE(ip
)));
108 PCIDevice
*pcidev
= PCI_DEVICE(BUS(bus
)->parent
);
109 TPCI200State
*dev
= TPCI200(pcidev
);
110 unsigned ip_n
= ip
->slot
;
111 uint16_t prev_status
= dev
->status
;
113 assert(ip
->slot
>= 0 && ip
->slot
< N_MODULES
);
115 /* The requested interrupt must be enabled in the IP CONTROL
117 if (!(dev
->ctrl
[ip_n
] & CTRL_INT(intno
))) {
121 /* Update the interrupt status in the IP STATUS register */
123 dev
->status
|= STATUS_INT(ip_n
, intno
);
125 dev
->status
&= ~STATUS_INT(ip_n
, intno
);
128 /* Return if there are no changes */
129 if (dev
->status
== prev_status
) {
133 DPRINTF("IP %u INT%u#: %u\n", ip_n
, intno
, level
);
135 /* Check if the interrupt is edge sensitive */
136 if (dev
->ctrl
[ip_n
] & CTRL_INT_EDGE(intno
)) {
138 pci_set_irq(&dev
->dev
, !dev
->int_set
);
139 pci_set_irq(&dev
->dev
, dev
->int_set
);
143 uint16_t level_status
= dev
->status
;
145 /* Check if there are any level sensitive interrupts set by
146 removing the ones that are edge sensitive from the status
148 for (i
= 0; i
< N_MODULES
; i
++) {
149 for (j
= 0; j
< 2; j
++) {
150 if (dev
->ctrl
[i
] & CTRL_INT_EDGE(j
)) {
151 level_status
&= ~STATUS_INT(i
, j
);
156 if (level_status
&& !dev
->int_set
) {
157 pci_irq_assert(&dev
->dev
);
159 } else if (!level_status
&& dev
->int_set
) {
160 pci_irq_deassert(&dev
->dev
);
166 static uint64_t tpci200_read_cfg(void *opaque
, hwaddr addr
, unsigned size
)
168 TPCI200State
*s
= opaque
;
170 if (addr
< ARRAY_SIZE(local_config_regs
)) {
171 ret
= local_config_regs
[addr
];
173 /* Endianness is stored in the first bit of these registers */
174 if ((addr
== 0x2b && s
->big_endian
[0]) ||
175 (addr
== 0x2f && s
->big_endian
[1]) ||
176 (addr
== 0x33 && s
->big_endian
[2])) {
179 DPRINTF("Read from LCR 0x%x: 0x%x\n", (unsigned) addr
, (unsigned) ret
);
183 static void tpci200_write_cfg(void *opaque
, hwaddr addr
, uint64_t val
,
186 TPCI200State
*s
= opaque
;
187 /* Endianness is stored in the first bit of these registers */
188 if (addr
== 0x2b || addr
== 0x2f || addr
== 0x33) {
189 unsigned las
= (addr
- 0x2b) / 4;
190 s
->big_endian
[las
] = val
& 1;
191 DPRINTF("LAS%u big endian mode: %u\n", las
, (unsigned) val
& 1);
193 DPRINTF("Write to LCR 0x%x: 0x%x\n", (unsigned) addr
, (unsigned) val
);
197 static uint64_t tpci200_read_las0(void *opaque
, hwaddr addr
, unsigned size
)
199 TPCI200State
*s
= opaque
;
205 DPRINTF("Read REVISION ID\n"); /* Current value is 0x00 */
213 unsigned ip_n
= IP_N_FROM_REG(addr
);
215 DPRINTF("Read IP %c CONTROL: 0x%x\n", 'A' + ip_n
, (unsigned) ret
);
220 DPRINTF("Read RESET\n"); /* Not implemented */
225 DPRINTF("Read STATUS: 0x%x\n", (unsigned) ret
);
230 DPRINTF("Unsupported read from LAS0 0x%x\n", (unsigned) addr
);
234 return adjust_value(s
->big_endian
[0], &ret
, size
);
237 static void tpci200_write_las0(void *opaque
, hwaddr addr
, uint64_t val
,
240 TPCI200State
*s
= opaque
;
242 adjust_value(s
->big_endian
[0], &val
, size
);
247 DPRINTF("Write Revision ID: 0x%x\n", (unsigned) val
); /* No effect */
255 unsigned ip_n
= IP_N_FROM_REG(addr
);
257 DPRINTF("Write IP %c CONTROL: 0x%x\n", 'A' + ip_n
, (unsigned) val
);
262 DPRINTF("Write RESET: 0x%x\n", (unsigned) val
); /* Not implemented */
269 for (i
= 0; i
< N_MODULES
; i
++) {
270 IPackDevice
*ip
= ipack_device_find(&s
->bus
, i
);
273 if (val
& STATUS_INT(i
, 0)) {
274 DPRINTF("Clear IP %c INT0# status\n", 'A' + i
);
275 qemu_irq_lower(ip
->irq
[0]);
277 if (val
& STATUS_INT(i
, 1)) {
278 DPRINTF("Clear IP %c INT1# status\n", 'A' + i
);
279 qemu_irq_lower(ip
->irq
[1]);
283 if (val
& STATUS_TIME(i
)) {
284 DPRINTF("Clear IP %c timeout\n", 'A' + i
);
285 s
->status
&= ~STATUS_TIME(i
);
289 if (val
& STATUS_ERR_ANY
) {
290 DPRINTF("Unexpected write to STATUS register: 0x%x\n",
298 DPRINTF("Unsupported write to LAS0 0x%x: 0x%x\n",
299 (unsigned) addr
, (unsigned) val
);
304 static uint64_t tpci200_read_las1(void *opaque
, hwaddr addr
, unsigned size
)
306 TPCI200State
*s
= opaque
;
309 unsigned ip_n
, space
;
312 adjust_addr(s
->big_endian
[1], &addr
, size
);
315 * The address is divided into the IP module number (0-4), the IP
316 * address space (I/O, ID, INT) and the offset within that space.
319 space
= (addr
>> 6) & 3;
320 ip
= ipack_device_find(&s
->bus
, ip_n
);
323 DPRINTF("Read LAS1: IP module %u not installed\n", ip_n
);
325 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
329 offset
= addr
& IP_ID_SPACE_ADDR_MASK
;
331 ret
= k
->id_read(ip
, offset
);
336 offset
= addr
& IP_INT_SPACE_ADDR_MASK
;
338 /* Read address 0 to ACK IP INT0# and address 2 to ACK IP INT1# */
339 if (offset
== 0 || offset
== 2) {
340 unsigned intno
= offset
/ 2;
341 bool int_set
= s
->status
& STATUS_INT(ip_n
, intno
);
342 bool int_edge_sensitive
= s
->ctrl
[ip_n
] & CTRL_INT_EDGE(intno
);
343 if (int_set
&& !int_edge_sensitive
) {
344 qemu_irq_lower(ip
->irq
[intno
]);
349 ret
= k
->int_read(ip
, offset
);
354 offset
= addr
& IP_IO_SPACE_ADDR_MASK
;
356 ret
= k
->io_read(ip
, offset
);
362 return adjust_value(s
->big_endian
[1], &ret
, size
);
365 static void tpci200_write_las1(void *opaque
, hwaddr addr
, uint64_t val
,
368 TPCI200State
*s
= opaque
;
370 unsigned ip_n
, space
;
373 adjust_addr(s
->big_endian
[1], &addr
, size
);
374 adjust_value(s
->big_endian
[1], &val
, size
);
377 * The address is divided into the IP module number, the IP
378 * address space (I/O, ID, INT) and the offset within that space.
381 space
= (addr
>> 6) & 3;
382 ip
= ipack_device_find(&s
->bus
, ip_n
);
385 DPRINTF("Write LAS1: IP module %u not installed\n", ip_n
);
387 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
391 offset
= addr
& IP_ID_SPACE_ADDR_MASK
;
393 k
->id_write(ip
, offset
, val
);
398 offset
= addr
& IP_INT_SPACE_ADDR_MASK
;
400 k
->int_write(ip
, offset
, val
);
405 offset
= addr
& IP_IO_SPACE_ADDR_MASK
;
407 k
->io_write(ip
, offset
, val
);
414 static uint64_t tpci200_read_las2(void *opaque
, hwaddr addr
, unsigned size
)
416 TPCI200State
*s
= opaque
;
422 adjust_addr(s
->big_endian
[2], &addr
, size
);
425 * The address is divided into the IP module number and the offset
426 * within the IP module MEM space.
429 offset
= addr
& 0x7fffff;
430 ip
= ipack_device_find(&s
->bus
, ip_n
);
433 DPRINTF("Read LAS2: IP module %u not installed\n", ip_n
);
435 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
437 ret
= k
->mem_read16(ip
, offset
);
441 return adjust_value(s
->big_endian
[2], &ret
, size
);
444 static void tpci200_write_las2(void *opaque
, hwaddr addr
, uint64_t val
,
447 TPCI200State
*s
= opaque
;
452 adjust_addr(s
->big_endian
[2], &addr
, size
);
453 adjust_value(s
->big_endian
[2], &val
, size
);
456 * The address is divided into the IP module number and the offset
457 * within the IP module MEM space.
460 offset
= addr
& 0x7fffff;
461 ip
= ipack_device_find(&s
->bus
, ip_n
);
464 DPRINTF("Write LAS2: IP module %u not installed\n", ip_n
);
466 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
467 if (k
->mem_write16
) {
468 k
->mem_write16(ip
, offset
, val
);
473 static uint64_t tpci200_read_las3(void *opaque
, hwaddr addr
, unsigned size
)
475 TPCI200State
*s
= opaque
;
479 * The address is divided into the IP module number and the offset
480 * within the IP module MEM space.
482 unsigned ip_n
= addr
>> 22;
483 uint32_t offset
= addr
& 0x3fffff;
485 ip
= ipack_device_find(&s
->bus
, ip_n
);
488 DPRINTF("Read LAS3: IP module %u not installed\n", ip_n
);
490 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
492 ret
= k
->mem_read8(ip
, offset
);
499 static void tpci200_write_las3(void *opaque
, hwaddr addr
, uint64_t val
,
502 TPCI200State
*s
= opaque
;
505 * The address is divided into the IP module number and the offset
506 * within the IP module MEM space.
508 unsigned ip_n
= addr
>> 22;
509 uint32_t offset
= addr
& 0x3fffff;
511 ip
= ipack_device_find(&s
->bus
, ip_n
);
514 DPRINTF("Write LAS3: IP module %u not installed\n", ip_n
);
516 IPackDeviceClass
*k
= IPACK_DEVICE_GET_CLASS(ip
);
518 k
->mem_write8(ip
, offset
, val
);
523 static const MemoryRegionOps tpci200_cfg_ops
= {
524 .read
= tpci200_read_cfg
,
525 .write
= tpci200_write_cfg
,
526 .endianness
= DEVICE_NATIVE_ENDIAN
,
528 .min_access_size
= 1,
532 .min_access_size
= 1,
537 static const MemoryRegionOps tpci200_las0_ops
= {
538 .read
= tpci200_read_las0
,
539 .write
= tpci200_write_las0
,
540 .endianness
= DEVICE_NATIVE_ENDIAN
,
542 .min_access_size
= 2,
547 static const MemoryRegionOps tpci200_las1_ops
= {
548 .read
= tpci200_read_las1
,
549 .write
= tpci200_write_las1
,
550 .endianness
= DEVICE_NATIVE_ENDIAN
,
552 .min_access_size
= 1,
557 static const MemoryRegionOps tpci200_las2_ops
= {
558 .read
= tpci200_read_las2
,
559 .write
= tpci200_write_las2
,
560 .endianness
= DEVICE_NATIVE_ENDIAN
,
562 .min_access_size
= 1,
567 static const MemoryRegionOps tpci200_las3_ops
= {
568 .read
= tpci200_read_las3
,
569 .write
= tpci200_write_las3
,
570 .endianness
= DEVICE_NATIVE_ENDIAN
,
572 .min_access_size
= 1,
577 static void tpci200_realize(PCIDevice
*pci_dev
, Error
**errp
)
579 TPCI200State
*s
= TPCI200(pci_dev
);
580 uint8_t *c
= s
->dev
.config
;
582 pci_set_word(c
+ PCI_COMMAND
, 0x0003);
583 pci_set_word(c
+ PCI_STATUS
, 0x0280);
585 pci_set_byte(c
+ PCI_INTERRUPT_PIN
, 0x01); /* Interrupt pin A */
587 pci_set_byte(c
+ PCI_CAPABILITY_LIST
, 0x40);
588 pci_set_long(c
+ 0x40, 0x48014801);
589 pci_set_long(c
+ 0x48, 0x00024C06);
590 pci_set_long(c
+ 0x4C, 0x00000003);
592 memory_region_init_io(&s
->mmio
, OBJECT(s
), &tpci200_cfg_ops
,
593 s
, "tpci200_mmio", 128);
594 memory_region_init_io(&s
->io
, OBJECT(s
), &tpci200_cfg_ops
,
595 s
, "tpci200_io", 128);
596 memory_region_init_io(&s
->las0
, OBJECT(s
), &tpci200_las0_ops
,
597 s
, "tpci200_las0", 256);
598 memory_region_init_io(&s
->las1
, OBJECT(s
), &tpci200_las1_ops
,
599 s
, "tpci200_las1", 1024);
600 memory_region_init_io(&s
->las2
, OBJECT(s
), &tpci200_las2_ops
,
601 s
, "tpci200_las2", 32 * MiB
);
602 memory_region_init_io(&s
->las3
, OBJECT(s
), &tpci200_las3_ops
,
603 s
, "tpci200_las3", 16 * MiB
);
604 pci_register_bar(&s
->dev
, 0, PCI_BASE_ADDRESS_SPACE_MEMORY
, &s
->mmio
);
605 pci_register_bar(&s
->dev
, 1, PCI_BASE_ADDRESS_SPACE_IO
, &s
->io
);
606 pci_register_bar(&s
->dev
, 2, PCI_BASE_ADDRESS_SPACE_MEMORY
, &s
->las0
);
607 pci_register_bar(&s
->dev
, 3, PCI_BASE_ADDRESS_SPACE_MEMORY
, &s
->las1
);
608 pci_register_bar(&s
->dev
, 4, PCI_BASE_ADDRESS_SPACE_MEMORY
, &s
->las2
);
609 pci_register_bar(&s
->dev
, 5, PCI_BASE_ADDRESS_SPACE_MEMORY
, &s
->las3
);
611 ipack_bus_new_inplace(&s
->bus
, sizeof(s
->bus
), DEVICE(pci_dev
), NULL
,
612 N_MODULES
, tpci200_set_irq
);
615 static const VMStateDescription vmstate_tpci200
= {
618 .minimum_version_id
= 1,
619 .fields
= (VMStateField
[]) {
620 VMSTATE_PCI_DEVICE(dev
, TPCI200State
),
621 VMSTATE_BOOL_ARRAY(big_endian
, TPCI200State
, 3),
622 VMSTATE_UINT8_ARRAY(ctrl
, TPCI200State
, N_MODULES
),
623 VMSTATE_UINT16(status
, TPCI200State
),
624 VMSTATE_UINT8(int_set
, TPCI200State
),
625 VMSTATE_END_OF_LIST()
629 static void tpci200_class_init(ObjectClass
*klass
, void *data
)
631 DeviceClass
*dc
= DEVICE_CLASS(klass
);
632 PCIDeviceClass
*k
= PCI_DEVICE_CLASS(klass
);
634 k
->realize
= tpci200_realize
;
635 k
->vendor_id
= PCI_VENDOR_ID_TEWS
;
636 k
->device_id
= PCI_DEVICE_ID_TEWS_TPCI200
;
637 k
->class_id
= PCI_CLASS_BRIDGE_OTHER
;
638 k
->subsystem_vendor_id
= PCI_VENDOR_ID_TEWS
;
639 k
->subsystem_id
= 0x300A;
640 set_bit(DEVICE_CATEGORY_INPUT
, dc
->categories
);
641 dc
->desc
= "TEWS TPCI200 IndustryPack carrier";
642 dc
->vmsd
= &vmstate_tpci200
;
645 static const TypeInfo tpci200_info
= {
646 .name
= TYPE_TPCI200
,
647 .parent
= TYPE_PCI_DEVICE
,
648 .instance_size
= sizeof(TPCI200State
),
649 .class_init
= tpci200_class_init
,
650 .interfaces
= (InterfaceInfo
[]) {
651 { INTERFACE_CONVENTIONAL_PCI_DEVICE
},
656 static void tpci200_register_types(void)
658 type_register_static(&tpci200_info
);
661 type_init(tpci200_register_types
)