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xemu/hw/dma/xlnx-zynq-devcfg.c
Markus Armbruster d5938f29fe Clean up inclusion of sysemu/sysemu.h 
In my "build everything" tree, changing sysemu/sysemu.h triggers a
recompile of some 5400 out of 6600 objects (not counting tests and
objects that don't depend on qemu/osdep.h).

Almost a third of its inclusions are actually superfluous.  Delete
them.  Downgrade two more to qapi/qapi-types-run-state.h, and move one
from char/serial.h to char/serial.c.

hw/semihosting/config.c, monitor/monitor.c, qdev-monitor.c, and
stubs/semihost.c define variables declared in sysemu/sysemu.h without
including it.  The compiler is cool with that, but include it anyway.

This doesn't reduce actual use much, as it's still included into
widely included headers.  The next commit will tackle that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20190812052359.30071-27-armbru@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
2019-08-16 13:31:53 +02:00

403 lines
14 KiB
C
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/*
* 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);
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);
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 = (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 = (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,
&reg_array->mem);
sysbus_init_mmio(sbd, &s->iomem);
}
static void xlnx_zynq_devcfg_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->reset = 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)
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