mirror of https://gitlab.com/qemu-project/qemu
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
405 lines
14 KiB
C
405 lines
14 KiB
C
/*
|
|
* QEMU model of the Xilinx Zynq Devcfg Interface
|
|
*
|
|
* (C) 2011 PetaLogix Pty Ltd
|
|
* (C) 2014 Xilinx Inc.
|
|
* Written by Peter Crosthwaite <peter.crosthwaite@xilinx.com>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/dma/xlnx-zynq-devcfg.h"
|
|
#include "hw/irq.h"
|
|
#include "migration/vmstate.h"
|
|
#include "qemu/bitops.h"
|
|
#include "sysemu/dma.h"
|
|
#include "qemu/log.h"
|
|
#include "qemu/module.h"
|
|
|
|
#define FREQ_HZ 900000000
|
|
|
|
#define BTT_MAX 0x400
|
|
|
|
#ifndef XLNX_ZYNQ_DEVCFG_ERR_DEBUG
|
|
#define XLNX_ZYNQ_DEVCFG_ERR_DEBUG 0
|
|
#endif
|
|
|
|
#define DB_PRINT(fmt, args...) do { \
|
|
if (XLNX_ZYNQ_DEVCFG_ERR_DEBUG) { \
|
|
qemu_log("%s: " fmt, __func__, ## args); \
|
|
} \
|
|
} while (0)
|
|
|
|
REG32(CTRL, 0x00)
|
|
FIELD(CTRL, FORCE_RST, 31, 1) /* Not supported, wr ignored */
|
|
FIELD(CTRL, PCAP_PR, 27, 1) /* Forced to 0 on bad unlock */
|
|
FIELD(CTRL, PCAP_MODE, 26, 1)
|
|
FIELD(CTRL, MULTIBOOT_EN, 24, 1)
|
|
FIELD(CTRL, USER_MODE, 15, 1)
|
|
FIELD(CTRL, PCFG_AES_FUSE, 12, 1)
|
|
FIELD(CTRL, PCFG_AES_EN, 9, 3)
|
|
FIELD(CTRL, SEU_EN, 8, 1)
|
|
FIELD(CTRL, SEC_EN, 7, 1)
|
|
FIELD(CTRL, SPNIDEN, 6, 1)
|
|
FIELD(CTRL, SPIDEN, 5, 1)
|
|
FIELD(CTRL, NIDEN, 4, 1)
|
|
FIELD(CTRL, DBGEN, 3, 1)
|
|
FIELD(CTRL, DAP_EN, 0, 3)
|
|
|
|
REG32(LOCK, 0x04)
|
|
#define AES_FUSE_LOCK 4
|
|
#define AES_EN_LOCK 3
|
|
#define SEU_LOCK 2
|
|
#define SEC_LOCK 1
|
|
#define DBG_LOCK 0
|
|
|
|
/* mapping bits in R_LOCK to what they lock in R_CTRL */
|
|
static const uint32_t lock_ctrl_map[] = {
|
|
[AES_FUSE_LOCK] = R_CTRL_PCFG_AES_FUSE_MASK,
|
|
[AES_EN_LOCK] = R_CTRL_PCFG_AES_EN_MASK,
|
|
[SEU_LOCK] = R_CTRL_SEU_EN_MASK,
|
|
[SEC_LOCK] = R_CTRL_SEC_EN_MASK,
|
|
[DBG_LOCK] = R_CTRL_SPNIDEN_MASK | R_CTRL_SPIDEN_MASK |
|
|
R_CTRL_NIDEN_MASK | R_CTRL_DBGEN_MASK |
|
|
R_CTRL_DAP_EN_MASK,
|
|
};
|
|
|
|
REG32(CFG, 0x08)
|
|
FIELD(CFG, RFIFO_TH, 10, 2)
|
|
FIELD(CFG, WFIFO_TH, 8, 2)
|
|
FIELD(CFG, RCLK_EDGE, 7, 1)
|
|
FIELD(CFG, WCLK_EDGE, 6, 1)
|
|
FIELD(CFG, DISABLE_SRC_INC, 5, 1)
|
|
FIELD(CFG, DISABLE_DST_INC, 4, 1)
|
|
#define R_CFG_RESET 0x50B
|
|
|
|
REG32(INT_STS, 0x0C)
|
|
FIELD(INT_STS, PSS_GTS_USR_B, 31, 1)
|
|
FIELD(INT_STS, PSS_FST_CFG_B, 30, 1)
|
|
FIELD(INT_STS, PSS_CFG_RESET_B, 27, 1)
|
|
FIELD(INT_STS, RX_FIFO_OV, 18, 1)
|
|
FIELD(INT_STS, WR_FIFO_LVL, 17, 1)
|
|
FIELD(INT_STS, RD_FIFO_LVL, 16, 1)
|
|
FIELD(INT_STS, DMA_CMD_ERR, 15, 1)
|
|
FIELD(INT_STS, DMA_Q_OV, 14, 1)
|
|
FIELD(INT_STS, DMA_DONE, 13, 1)
|
|
FIELD(INT_STS, DMA_P_DONE, 12, 1)
|
|
FIELD(INT_STS, P2D_LEN_ERR, 11, 1)
|
|
FIELD(INT_STS, PCFG_DONE, 2, 1)
|
|
#define R_INT_STS_RSVD ((0x7 << 24) | (0x1 << 19) | (0xF < 7))
|
|
|
|
REG32(INT_MASK, 0x10)
|
|
|
|
REG32(STATUS, 0x14)
|
|
FIELD(STATUS, DMA_CMD_Q_F, 31, 1)
|
|
FIELD(STATUS, DMA_CMD_Q_E, 30, 1)
|
|
FIELD(STATUS, DMA_DONE_CNT, 28, 2)
|
|
FIELD(STATUS, RX_FIFO_LVL, 20, 5)
|
|
FIELD(STATUS, TX_FIFO_LVL, 12, 7)
|
|
FIELD(STATUS, PSS_GTS_USR_B, 11, 1)
|
|
FIELD(STATUS, PSS_FST_CFG_B, 10, 1)
|
|
FIELD(STATUS, PSS_CFG_RESET_B, 5, 1)
|
|
|
|
REG32(DMA_SRC_ADDR, 0x18)
|
|
REG32(DMA_DST_ADDR, 0x1C)
|
|
REG32(DMA_SRC_LEN, 0x20)
|
|
REG32(DMA_DST_LEN, 0x24)
|
|
REG32(ROM_SHADOW, 0x28)
|
|
REG32(SW_ID, 0x30)
|
|
REG32(UNLOCK, 0x34)
|
|
|
|
#define R_UNLOCK_MAGIC 0x757BDF0D
|
|
|
|
REG32(MCTRL, 0x80)
|
|
FIELD(MCTRL, PS_VERSION, 28, 4)
|
|
FIELD(MCTRL, PCFG_POR_B, 8, 1)
|
|
FIELD(MCTRL, INT_PCAP_LPBK, 4, 1)
|
|
FIELD(MCTRL, QEMU, 3, 1)
|
|
|
|
static void xlnx_zynq_devcfg_update_ixr(XlnxZynqDevcfg *s)
|
|
{
|
|
qemu_set_irq(s->irq, ~s->regs[R_INT_MASK] & s->regs[R_INT_STS]);
|
|
}
|
|
|
|
static void xlnx_zynq_devcfg_reset(DeviceState *dev)
|
|
{
|
|
XlnxZynqDevcfg *s = XLNX_ZYNQ_DEVCFG(dev);
|
|
int i;
|
|
|
|
for (i = 0; i < XLNX_ZYNQ_DEVCFG_R_MAX; ++i) {
|
|
register_reset(&s->regs_info[i]);
|
|
}
|
|
}
|
|
|
|
static void xlnx_zynq_devcfg_dma_go(XlnxZynqDevcfg *s)
|
|
{
|
|
do {
|
|
uint8_t buf[BTT_MAX];
|
|
XlnxZynqDevcfgDMACmd *dmah = s->dma_cmd_fifo;
|
|
uint32_t btt = BTT_MAX;
|
|
bool loopback = s->regs[R_MCTRL] & R_MCTRL_INT_PCAP_LPBK_MASK;
|
|
|
|
btt = MIN(btt, dmah->src_len);
|
|
if (loopback) {
|
|
btt = MIN(btt, dmah->dest_len);
|
|
}
|
|
DB_PRINT("reading %x bytes from %x\n", btt, dmah->src_addr);
|
|
dma_memory_read(&address_space_memory, dmah->src_addr, buf, btt,
|
|
MEMTXATTRS_UNSPECIFIED);
|
|
dmah->src_len -= btt;
|
|
dmah->src_addr += btt;
|
|
if (loopback && (dmah->src_len || dmah->dest_len)) {
|
|
DB_PRINT("writing %x bytes from %x\n", btt, dmah->dest_addr);
|
|
dma_memory_write(&address_space_memory, dmah->dest_addr, buf, btt,
|
|
MEMTXATTRS_UNSPECIFIED);
|
|
dmah->dest_len -= btt;
|
|
dmah->dest_addr += btt;
|
|
}
|
|
if (!dmah->src_len && !dmah->dest_len) {
|
|
DB_PRINT("dma operation finished\n");
|
|
s->regs[R_INT_STS] |= R_INT_STS_DMA_DONE_MASK |
|
|
R_INT_STS_DMA_P_DONE_MASK;
|
|
s->dma_cmd_fifo_num--;
|
|
memmove(s->dma_cmd_fifo, &s->dma_cmd_fifo[1],
|
|
sizeof(s->dma_cmd_fifo) - sizeof(s->dma_cmd_fifo[0]));
|
|
}
|
|
xlnx_zynq_devcfg_update_ixr(s);
|
|
} while (s->dma_cmd_fifo_num);
|
|
}
|
|
|
|
static void r_ixr_post_write(RegisterInfo *reg, uint64_t val)
|
|
{
|
|
XlnxZynqDevcfg *s = XLNX_ZYNQ_DEVCFG(reg->opaque);
|
|
|
|
xlnx_zynq_devcfg_update_ixr(s);
|
|
}
|
|
|
|
static uint64_t r_ctrl_pre_write(RegisterInfo *reg, uint64_t val)
|
|
{
|
|
XlnxZynqDevcfg *s = XLNX_ZYNQ_DEVCFG(reg->opaque);
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(lock_ctrl_map); ++i) {
|
|
if (s->regs[R_LOCK] & 1 << i) {
|
|
val &= ~lock_ctrl_map[i];
|
|
val |= lock_ctrl_map[i] & s->regs[R_CTRL];
|
|
}
|
|
}
|
|
return val;
|
|
}
|
|
|
|
static void r_ctrl_post_write(RegisterInfo *reg, uint64_t val)
|
|
{
|
|
const char *device_prefix = object_get_typename(OBJECT(reg->opaque));
|
|
uint32_t aes_en = FIELD_EX32(val, CTRL, PCFG_AES_EN);
|
|
|
|
if (aes_en != 0 && aes_en != 7) {
|
|
qemu_log_mask(LOG_UNIMP, "%s: warning, aes-en bits inconsistent,"
|
|
"unimplemented security reset should happen!\n",
|
|
device_prefix);
|
|
}
|
|
}
|
|
|
|
static void r_unlock_post_write(RegisterInfo *reg, uint64_t val)
|
|
{
|
|
XlnxZynqDevcfg *s = XLNX_ZYNQ_DEVCFG(reg->opaque);
|
|
const char *device_prefix = object_get_typename(OBJECT(s));
|
|
|
|
if (val == R_UNLOCK_MAGIC) {
|
|
DB_PRINT("successful unlock\n");
|
|
s->regs[R_CTRL] |= R_CTRL_PCAP_PR_MASK;
|
|
s->regs[R_CTRL] |= R_CTRL_PCFG_AES_EN_MASK;
|
|
memory_region_set_enabled(&s->iomem, true);
|
|
} else { /* bad unlock attempt */
|
|
qemu_log_mask(LOG_GUEST_ERROR, "%s: failed unlock\n", device_prefix);
|
|
s->regs[R_CTRL] &= ~R_CTRL_PCAP_PR_MASK;
|
|
s->regs[R_CTRL] &= ~R_CTRL_PCFG_AES_EN_MASK;
|
|
/* core becomes inaccessible */
|
|
memory_region_set_enabled(&s->iomem, false);
|
|
}
|
|
}
|
|
|
|
static uint64_t r_lock_pre_write(RegisterInfo *reg, uint64_t val)
|
|
{
|
|
XlnxZynqDevcfg *s = XLNX_ZYNQ_DEVCFG(reg->opaque);
|
|
|
|
/* once bits are locked they stay locked */
|
|
return s->regs[R_LOCK] | val;
|
|
}
|
|
|
|
static void r_dma_dst_len_post_write(RegisterInfo *reg, uint64_t val)
|
|
{
|
|
XlnxZynqDevcfg *s = XLNX_ZYNQ_DEVCFG(reg->opaque);
|
|
|
|
s->dma_cmd_fifo[s->dma_cmd_fifo_num] = (XlnxZynqDevcfgDMACmd) {
|
|
.src_addr = s->regs[R_DMA_SRC_ADDR] & ~0x3UL,
|
|
.dest_addr = s->regs[R_DMA_DST_ADDR] & ~0x3UL,
|
|
.src_len = s->regs[R_DMA_SRC_LEN] << 2,
|
|
.dest_len = s->regs[R_DMA_DST_LEN] << 2,
|
|
};
|
|
s->dma_cmd_fifo_num++;
|
|
DB_PRINT("dma transfer started; %d total transfers pending\n",
|
|
s->dma_cmd_fifo_num);
|
|
xlnx_zynq_devcfg_dma_go(s);
|
|
}
|
|
|
|
static const RegisterAccessInfo xlnx_zynq_devcfg_regs_info[] = {
|
|
{ .name = "CTRL", .addr = A_CTRL,
|
|
.reset = R_CTRL_PCAP_PR_MASK | R_CTRL_PCAP_MODE_MASK | 0x3 << 13,
|
|
.rsvd = 0x1 << 28 | 0x3ff << 13 | 0x3 << 13,
|
|
.pre_write = r_ctrl_pre_write,
|
|
.post_write = r_ctrl_post_write,
|
|
},
|
|
{ .name = "LOCK", .addr = A_LOCK,
|
|
.rsvd = MAKE_64BIT_MASK(5, 64 - 5),
|
|
.pre_write = r_lock_pre_write,
|
|
},
|
|
{ .name = "CFG", .addr = A_CFG,
|
|
.reset = R_CFG_RESET,
|
|
.rsvd = 0xfffff00f,
|
|
},
|
|
{ .name = "INT_STS", .addr = A_INT_STS,
|
|
.w1c = ~R_INT_STS_RSVD,
|
|
.reset = R_INT_STS_PSS_GTS_USR_B_MASK |
|
|
R_INT_STS_PSS_CFG_RESET_B_MASK |
|
|
R_INT_STS_WR_FIFO_LVL_MASK,
|
|
.rsvd = R_INT_STS_RSVD,
|
|
.post_write = r_ixr_post_write,
|
|
},
|
|
{ .name = "INT_MASK", .addr = A_INT_MASK,
|
|
.reset = ~0,
|
|
.rsvd = R_INT_STS_RSVD,
|
|
.post_write = r_ixr_post_write,
|
|
},
|
|
{ .name = "STATUS", .addr = A_STATUS,
|
|
.reset = R_STATUS_DMA_CMD_Q_E_MASK |
|
|
R_STATUS_PSS_GTS_USR_B_MASK |
|
|
R_STATUS_PSS_CFG_RESET_B_MASK,
|
|
.ro = ~0,
|
|
},
|
|
{ .name = "DMA_SRC_ADDR", .addr = A_DMA_SRC_ADDR, },
|
|
{ .name = "DMA_DST_ADDR", .addr = A_DMA_DST_ADDR, },
|
|
{ .name = "DMA_SRC_LEN", .addr = A_DMA_SRC_LEN,
|
|
.ro = MAKE_64BIT_MASK(27, 64 - 27) },
|
|
{ .name = "DMA_DST_LEN", .addr = A_DMA_DST_LEN,
|
|
.ro = MAKE_64BIT_MASK(27, 64 - 27),
|
|
.post_write = r_dma_dst_len_post_write,
|
|
},
|
|
{ .name = "ROM_SHADOW", .addr = A_ROM_SHADOW,
|
|
.rsvd = ~0ull,
|
|
},
|
|
{ .name = "SW_ID", .addr = A_SW_ID, },
|
|
{ .name = "UNLOCK", .addr = A_UNLOCK,
|
|
.post_write = r_unlock_post_write,
|
|
},
|
|
{ .name = "MCTRL", .addr = R_MCTRL * 4,
|
|
/* Silicon 3.0 for version field, the mysterious reserved bit 23
|
|
* and QEMU platform identifier.
|
|
*/
|
|
.reset = 0x2 << R_MCTRL_PS_VERSION_SHIFT | 1 << 23 | R_MCTRL_QEMU_MASK,
|
|
.ro = ~R_MCTRL_INT_PCAP_LPBK_MASK,
|
|
.rsvd = 0x00f00303,
|
|
},
|
|
};
|
|
|
|
static const MemoryRegionOps xlnx_zynq_devcfg_reg_ops = {
|
|
.read = register_read_memory,
|
|
.write = register_write_memory,
|
|
.endianness = DEVICE_LITTLE_ENDIAN,
|
|
.valid = {
|
|
.min_access_size = 4,
|
|
.max_access_size = 4,
|
|
}
|
|
};
|
|
|
|
static const VMStateDescription vmstate_xlnx_zynq_devcfg_dma_cmd = {
|
|
.name = "xlnx_zynq_devcfg_dma_cmd",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (const VMStateField[]) {
|
|
VMSTATE_UINT32(src_addr, XlnxZynqDevcfgDMACmd),
|
|
VMSTATE_UINT32(dest_addr, XlnxZynqDevcfgDMACmd),
|
|
VMSTATE_UINT32(src_len, XlnxZynqDevcfgDMACmd),
|
|
VMSTATE_UINT32(dest_len, XlnxZynqDevcfgDMACmd),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static const VMStateDescription vmstate_xlnx_zynq_devcfg = {
|
|
.name = "xlnx_zynq_devcfg",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (const VMStateField[]) {
|
|
VMSTATE_STRUCT_ARRAY(dma_cmd_fifo, XlnxZynqDevcfg,
|
|
XLNX_ZYNQ_DEVCFG_DMA_CMD_FIFO_LEN, 0,
|
|
vmstate_xlnx_zynq_devcfg_dma_cmd,
|
|
XlnxZynqDevcfgDMACmd),
|
|
VMSTATE_UINT8(dma_cmd_fifo_num, XlnxZynqDevcfg),
|
|
VMSTATE_UINT32_ARRAY(regs, XlnxZynqDevcfg, XLNX_ZYNQ_DEVCFG_R_MAX),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static void xlnx_zynq_devcfg_init(Object *obj)
|
|
{
|
|
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
|
|
XlnxZynqDevcfg *s = XLNX_ZYNQ_DEVCFG(obj);
|
|
RegisterInfoArray *reg_array;
|
|
|
|
sysbus_init_irq(sbd, &s->irq);
|
|
|
|
memory_region_init(&s->iomem, obj, "devcfg", XLNX_ZYNQ_DEVCFG_R_MAX * 4);
|
|
reg_array =
|
|
register_init_block32(DEVICE(obj), xlnx_zynq_devcfg_regs_info,
|
|
ARRAY_SIZE(xlnx_zynq_devcfg_regs_info),
|
|
s->regs_info, s->regs,
|
|
&xlnx_zynq_devcfg_reg_ops,
|
|
XLNX_ZYNQ_DEVCFG_ERR_DEBUG,
|
|
XLNX_ZYNQ_DEVCFG_R_MAX);
|
|
memory_region_add_subregion(&s->iomem,
|
|
A_CTRL,
|
|
®_array->mem);
|
|
|
|
sysbus_init_mmio(sbd, &s->iomem);
|
|
}
|
|
|
|
static void xlnx_zynq_devcfg_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
device_class_set_legacy_reset(dc, xlnx_zynq_devcfg_reset);
|
|
dc->vmsd = &vmstate_xlnx_zynq_devcfg;
|
|
}
|
|
|
|
static const TypeInfo xlnx_zynq_devcfg_info = {
|
|
.name = TYPE_XLNX_ZYNQ_DEVCFG,
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_size = sizeof(XlnxZynqDevcfg),
|
|
.instance_init = xlnx_zynq_devcfg_init,
|
|
.class_init = xlnx_zynq_devcfg_class_init,
|
|
};
|
|
|
|
static void xlnx_zynq_devcfg_register_types(void)
|
|
{
|
|
type_register_static(&xlnx_zynq_devcfg_info);
|
|
}
|
|
|
|
type_init(xlnx_zynq_devcfg_register_types)
|