| /* |
| * Exynos4210 UART Emulation |
| * |
| * Copyright (C) 2011 Samsung Electronics Co Ltd. |
| * Maksim Kozlov, <m.kozlov@samsung.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "hw/sysbus.h" |
| #include "migration/vmstate.h" |
| #include "qemu/error-report.h" |
| #include "qemu/module.h" |
| #include "chardev/char-fe.h" |
| #include "chardev/char-serial.h" |
| |
| #include "hw/arm/exynos4210.h" |
| #include "hw/irq.h" |
| #include "hw/qdev-properties.h" |
| |
| #undef DEBUG_UART |
| #undef DEBUG_UART_EXTEND |
| #undef DEBUG_IRQ |
| #undef DEBUG_Rx_DATA |
| #undef DEBUG_Tx_DATA |
| |
| #define DEBUG_UART 0 |
| #define DEBUG_UART_EXTEND 0 |
| #define DEBUG_IRQ 0 |
| #define DEBUG_Rx_DATA 0 |
| #define DEBUG_Tx_DATA 0 |
| |
| #if DEBUG_UART |
| #define PRINT_DEBUG(fmt, args...) \ |
| do { \ |
| fprintf(stderr, " [%s:%d] "fmt, __func__, __LINE__, ##args); \ |
| } while (0) |
| |
| #if DEBUG_UART_EXTEND |
| #define PRINT_DEBUG_EXTEND(fmt, args...) \ |
| do { \ |
| fprintf(stderr, " [%s:%d] "fmt, __func__, __LINE__, ##args); \ |
| } while (0) |
| #else |
| #define PRINT_DEBUG_EXTEND(fmt, args...) \ |
| do {} while (0) |
| #endif /* EXTEND */ |
| |
| #else |
| #define PRINT_DEBUG(fmt, args...) \ |
| do {} while (0) |
| #define PRINT_DEBUG_EXTEND(fmt, args...) \ |
| do {} while (0) |
| #endif |
| |
| #define PRINT_ERROR(fmt, args...) \ |
| do { \ |
| fprintf(stderr, " [%s:%d] "fmt, __func__, __LINE__, ##args); \ |
| } while (0) |
| |
| /* |
| * Offsets for UART registers relative to SFR base address |
| * for UARTn |
| * |
| */ |
| #define ULCON 0x0000 /* Line Control */ |
| #define UCON 0x0004 /* Control */ |
| #define UFCON 0x0008 /* FIFO Control */ |
| #define UMCON 0x000C /* Modem Control */ |
| #define UTRSTAT 0x0010 /* Tx/Rx Status */ |
| #define UERSTAT 0x0014 /* UART Error Status */ |
| #define UFSTAT 0x0018 /* FIFO Status */ |
| #define UMSTAT 0x001C /* Modem Status */ |
| #define UTXH 0x0020 /* Transmit Buffer */ |
| #define URXH 0x0024 /* Receive Buffer */ |
| #define UBRDIV 0x0028 /* Baud Rate Divisor */ |
| #define UFRACVAL 0x002C /* Divisor Fractional Value */ |
| #define UINTP 0x0030 /* Interrupt Pending */ |
| #define UINTSP 0x0034 /* Interrupt Source Pending */ |
| #define UINTM 0x0038 /* Interrupt Mask */ |
| |
| /* |
| * for indexing register in the uint32_t array |
| * |
| * 'reg' - register offset (see offsets definitions above) |
| * |
| */ |
| #define I_(reg) (reg / sizeof(uint32_t)) |
| |
| typedef struct Exynos4210UartReg { |
| const char *name; /* the only reason is the debug output */ |
| hwaddr offset; |
| uint32_t reset_value; |
| } Exynos4210UartReg; |
| |
| static const Exynos4210UartReg exynos4210_uart_regs[] = { |
| {"ULCON", ULCON, 0x00000000}, |
| {"UCON", UCON, 0x00003000}, |
| {"UFCON", UFCON, 0x00000000}, |
| {"UMCON", UMCON, 0x00000000}, |
| {"UTRSTAT", UTRSTAT, 0x00000006}, /* RO */ |
| {"UERSTAT", UERSTAT, 0x00000000}, /* RO */ |
| {"UFSTAT", UFSTAT, 0x00000000}, /* RO */ |
| {"UMSTAT", UMSTAT, 0x00000000}, /* RO */ |
| {"UTXH", UTXH, 0x5c5c5c5c}, /* WO, undefined reset value*/ |
| {"URXH", URXH, 0x00000000}, /* RO */ |
| {"UBRDIV", UBRDIV, 0x00000000}, |
| {"UFRACVAL", UFRACVAL, 0x00000000}, |
| {"UINTP", UINTP, 0x00000000}, |
| {"UINTSP", UINTSP, 0x00000000}, |
| {"UINTM", UINTM, 0x00000000}, |
| }; |
| |
| #define EXYNOS4210_UART_REGS_MEM_SIZE 0x3C |
| |
| /* UART FIFO Control */ |
| #define UFCON_FIFO_ENABLE 0x1 |
| #define UFCON_Rx_FIFO_RESET 0x2 |
| #define UFCON_Tx_FIFO_RESET 0x4 |
| #define UFCON_Tx_FIFO_TRIGGER_LEVEL_SHIFT 8 |
| #define UFCON_Tx_FIFO_TRIGGER_LEVEL (7 << UFCON_Tx_FIFO_TRIGGER_LEVEL_SHIFT) |
| #define UFCON_Rx_FIFO_TRIGGER_LEVEL_SHIFT 4 |
| #define UFCON_Rx_FIFO_TRIGGER_LEVEL (7 << UFCON_Rx_FIFO_TRIGGER_LEVEL_SHIFT) |
| |
| /* Uart FIFO Status */ |
| #define UFSTAT_Rx_FIFO_COUNT 0xff |
| #define UFSTAT_Rx_FIFO_FULL 0x100 |
| #define UFSTAT_Rx_FIFO_ERROR 0x200 |
| #define UFSTAT_Tx_FIFO_COUNT_SHIFT 16 |
| #define UFSTAT_Tx_FIFO_COUNT (0xff << UFSTAT_Tx_FIFO_COUNT_SHIFT) |
| #define UFSTAT_Tx_FIFO_FULL_SHIFT 24 |
| #define UFSTAT_Tx_FIFO_FULL (1 << UFSTAT_Tx_FIFO_FULL_SHIFT) |
| |
| /* UART Interrupt Source Pending */ |
| #define UINTSP_RXD 0x1 /* Receive interrupt */ |
| #define UINTSP_ERROR 0x2 /* Error interrupt */ |
| #define UINTSP_TXD 0x4 /* Transmit interrupt */ |
| #define UINTSP_MODEM 0x8 /* Modem interrupt */ |
| |
| /* UART Line Control */ |
| #define ULCON_IR_MODE_SHIFT 6 |
| #define ULCON_PARITY_SHIFT 3 |
| #define ULCON_STOP_BIT_SHIFT 1 |
| |
| /* UART Tx/Rx Status */ |
| #define UTRSTAT_TRANSMITTER_EMPTY 0x4 |
| #define UTRSTAT_Tx_BUFFER_EMPTY 0x2 |
| #define UTRSTAT_Rx_BUFFER_DATA_READY 0x1 |
| |
| /* UART Error Status */ |
| #define UERSTAT_OVERRUN 0x1 |
| #define UERSTAT_PARITY 0x2 |
| #define UERSTAT_FRAME 0x4 |
| #define UERSTAT_BREAK 0x8 |
| |
| typedef struct { |
| uint8_t *data; |
| uint32_t sp, rp; /* store and retrieve pointers */ |
| uint32_t size; |
| } Exynos4210UartFIFO; |
| |
| #define TYPE_EXYNOS4210_UART "exynos4210.uart" |
| #define EXYNOS4210_UART(obj) \ |
| OBJECT_CHECK(Exynos4210UartState, (obj), TYPE_EXYNOS4210_UART) |
| |
| typedef struct Exynos4210UartState { |
| SysBusDevice parent_obj; |
| |
| MemoryRegion iomem; |
| |
| uint32_t reg[EXYNOS4210_UART_REGS_MEM_SIZE / sizeof(uint32_t)]; |
| Exynos4210UartFIFO rx; |
| Exynos4210UartFIFO tx; |
| |
| CharBackend chr; |
| qemu_irq irq; |
| |
| uint32_t channel; |
| |
| } Exynos4210UartState; |
| |
| |
| #if DEBUG_UART |
| /* Used only for debugging inside PRINT_DEBUG_... macros */ |
| static const char *exynos4210_uart_regname(hwaddr offset) |
| { |
| |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(exynos4210_uart_regs); i++) { |
| if (offset == exynos4210_uart_regs[i].offset) { |
| return exynos4210_uart_regs[i].name; |
| } |
| } |
| |
| return NULL; |
| } |
| #endif |
| |
| |
| static void fifo_store(Exynos4210UartFIFO *q, uint8_t ch) |
| { |
| q->data[q->sp] = ch; |
| q->sp = (q->sp + 1) % q->size; |
| } |
| |
| static uint8_t fifo_retrieve(Exynos4210UartFIFO *q) |
| { |
| uint8_t ret = q->data[q->rp]; |
| q->rp = (q->rp + 1) % q->size; |
| return ret; |
| } |
| |
| static int fifo_elements_number(const Exynos4210UartFIFO *q) |
| { |
| if (q->sp < q->rp) { |
| return q->size - q->rp + q->sp; |
| } |
| |
| return q->sp - q->rp; |
| } |
| |
| static int fifo_empty_elements_number(const Exynos4210UartFIFO *q) |
| { |
| return q->size - fifo_elements_number(q); |
| } |
| |
| static void fifo_reset(Exynos4210UartFIFO *q) |
| { |
| g_free(q->data); |
| q->data = NULL; |
| |
| q->data = (uint8_t *)g_malloc0(q->size); |
| |
| q->sp = 0; |
| q->rp = 0; |
| } |
| |
| static uint32_t exynos4210_uart_Tx_FIFO_trigger_level(const Exynos4210UartState *s) |
| { |
| uint32_t level = 0; |
| uint32_t reg; |
| |
| reg = (s->reg[I_(UFCON)] & UFCON_Tx_FIFO_TRIGGER_LEVEL) >> |
| UFCON_Tx_FIFO_TRIGGER_LEVEL_SHIFT; |
| |
| switch (s->channel) { |
| case 0: |
| level = reg * 32; |
| break; |
| case 1: |
| case 4: |
| level = reg * 8; |
| break; |
| case 2: |
| case 3: |
| level = reg * 2; |
| break; |
| default: |
| level = 0; |
| PRINT_ERROR("Wrong UART channel number: %d\n", s->channel); |
| } |
| |
| return level; |
| } |
| |
| static void exynos4210_uart_update_irq(Exynos4210UartState *s) |
| { |
| /* |
| * The Tx interrupt is always requested if the number of data in the |
| * transmit FIFO is smaller than the trigger level. |
| */ |
| if (s->reg[I_(UFCON)] & UFCON_FIFO_ENABLE) { |
| |
| uint32_t count = (s->reg[I_(UFSTAT)] & UFSTAT_Tx_FIFO_COUNT) >> |
| UFSTAT_Tx_FIFO_COUNT_SHIFT; |
| |
| if (count <= exynos4210_uart_Tx_FIFO_trigger_level(s)) { |
| s->reg[I_(UINTSP)] |= UINTSP_TXD; |
| } |
| } |
| |
| s->reg[I_(UINTP)] = s->reg[I_(UINTSP)] & ~s->reg[I_(UINTM)]; |
| |
| if (s->reg[I_(UINTP)]) { |
| qemu_irq_raise(s->irq); |
| |
| #if DEBUG_IRQ |
| fprintf(stderr, "UART%d: IRQ has been raised: %08x\n", |
| s->channel, s->reg[I_(UINTP)]); |
| #endif |
| |
| } else { |
| qemu_irq_lower(s->irq); |
| } |
| } |
| |
| static void exynos4210_uart_update_parameters(Exynos4210UartState *s) |
| { |
| int speed, parity, data_bits, stop_bits; |
| QEMUSerialSetParams ssp; |
| uint64_t uclk_rate; |
| |
| if (s->reg[I_(UBRDIV)] == 0) { |
| return; |
| } |
| |
| if (s->reg[I_(ULCON)] & 0x20) { |
| if (s->reg[I_(ULCON)] & 0x28) { |
| parity = 'E'; |
| } else { |
| parity = 'O'; |
| } |
| } else { |
| parity = 'N'; |
| } |
| |
| if (s->reg[I_(ULCON)] & 0x4) { |
| stop_bits = 2; |
| } else { |
| stop_bits = 1; |
| } |
| |
| data_bits = (s->reg[I_(ULCON)] & 0x3) + 5; |
| |
| uclk_rate = 24000000; |
| |
| speed = uclk_rate / ((16 * (s->reg[I_(UBRDIV)]) & 0xffff) + |
| (s->reg[I_(UFRACVAL)] & 0x7) + 16); |
| |
| ssp.speed = speed; |
| ssp.parity = parity; |
| ssp.data_bits = data_bits; |
| ssp.stop_bits = stop_bits; |
| |
| qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp); |
| |
| PRINT_DEBUG("UART%d: speed: %d, parity: %c, data: %d, stop: %d\n", |
| s->channel, speed, parity, data_bits, stop_bits); |
| } |
| |
| static void exynos4210_uart_write(void *opaque, hwaddr offset, |
| uint64_t val, unsigned size) |
| { |
| Exynos4210UartState *s = (Exynos4210UartState *)opaque; |
| uint8_t ch; |
| |
| PRINT_DEBUG_EXTEND("UART%d: <0x%04x> %s <- 0x%08llx\n", s->channel, |
| offset, exynos4210_uart_regname(offset), (long long unsigned int)val); |
| |
| switch (offset) { |
| case ULCON: |
| case UBRDIV: |
| case UFRACVAL: |
| s->reg[I_(offset)] = val; |
| exynos4210_uart_update_parameters(s); |
| break; |
| case UFCON: |
| s->reg[I_(UFCON)] = val; |
| if (val & UFCON_Rx_FIFO_RESET) { |
| fifo_reset(&s->rx); |
| s->reg[I_(UFCON)] &= ~UFCON_Rx_FIFO_RESET; |
| PRINT_DEBUG("UART%d: Rx FIFO Reset\n", s->channel); |
| } |
| if (val & UFCON_Tx_FIFO_RESET) { |
| fifo_reset(&s->tx); |
| s->reg[I_(UFCON)] &= ~UFCON_Tx_FIFO_RESET; |
| PRINT_DEBUG("UART%d: Tx FIFO Reset\n", s->channel); |
| } |
| break; |
| |
| case UTXH: |
| if (qemu_chr_fe_backend_connected(&s->chr)) { |
| s->reg[I_(UTRSTAT)] &= ~(UTRSTAT_TRANSMITTER_EMPTY | |
| UTRSTAT_Tx_BUFFER_EMPTY); |
| ch = (uint8_t)val; |
| /* XXX this blocks entire thread. Rewrite to use |
| * qemu_chr_fe_write and background I/O callbacks */ |
| qemu_chr_fe_write_all(&s->chr, &ch, 1); |
| #if DEBUG_Tx_DATA |
| fprintf(stderr, "%c", ch); |
| #endif |
| s->reg[I_(UTRSTAT)] |= UTRSTAT_TRANSMITTER_EMPTY | |
| UTRSTAT_Tx_BUFFER_EMPTY; |
| s->reg[I_(UINTSP)] |= UINTSP_TXD; |
| exynos4210_uart_update_irq(s); |
| } |
| break; |
| |
| case UINTP: |
| s->reg[I_(UINTP)] &= ~val; |
| s->reg[I_(UINTSP)] &= ~val; |
| PRINT_DEBUG("UART%d: UINTP [%04x] have been cleared: %08x\n", |
| s->channel, offset, s->reg[I_(UINTP)]); |
| exynos4210_uart_update_irq(s); |
| break; |
| case UTRSTAT: |
| case UERSTAT: |
| case UFSTAT: |
| case UMSTAT: |
| case URXH: |
| PRINT_DEBUG("UART%d: Trying to write into RO register: %s [%04x]\n", |
| s->channel, exynos4210_uart_regname(offset), offset); |
| break; |
| case UINTSP: |
| s->reg[I_(UINTSP)] &= ~val; |
| break; |
| case UINTM: |
| s->reg[I_(UINTM)] = val; |
| exynos4210_uart_update_irq(s); |
| break; |
| case UCON: |
| case UMCON: |
| default: |
| s->reg[I_(offset)] = val; |
| break; |
| } |
| } |
| static uint64_t exynos4210_uart_read(void *opaque, hwaddr offset, |
| unsigned size) |
| { |
| Exynos4210UartState *s = (Exynos4210UartState *)opaque; |
| uint32_t res; |
| |
| switch (offset) { |
| case UERSTAT: /* Read Only */ |
| res = s->reg[I_(UERSTAT)]; |
| s->reg[I_(UERSTAT)] = 0; |
| return res; |
| case UFSTAT: /* Read Only */ |
| s->reg[I_(UFSTAT)] = fifo_elements_number(&s->rx) & 0xff; |
| if (fifo_empty_elements_number(&s->rx) == 0) { |
| s->reg[I_(UFSTAT)] |= UFSTAT_Rx_FIFO_FULL; |
| s->reg[I_(UFSTAT)] &= ~0xff; |
| } |
| return s->reg[I_(UFSTAT)]; |
| case URXH: |
| if (s->reg[I_(UFCON)] & UFCON_FIFO_ENABLE) { |
| if (fifo_elements_number(&s->rx)) { |
| res = fifo_retrieve(&s->rx); |
| #if DEBUG_Rx_DATA |
| fprintf(stderr, "%c", res); |
| #endif |
| if (!fifo_elements_number(&s->rx)) { |
| s->reg[I_(UTRSTAT)] &= ~UTRSTAT_Rx_BUFFER_DATA_READY; |
| } else { |
| s->reg[I_(UTRSTAT)] |= UTRSTAT_Rx_BUFFER_DATA_READY; |
| } |
| } else { |
| s->reg[I_(UINTSP)] |= UINTSP_ERROR; |
| exynos4210_uart_update_irq(s); |
| res = 0; |
| } |
| } else { |
| s->reg[I_(UTRSTAT)] &= ~UTRSTAT_Rx_BUFFER_DATA_READY; |
| res = s->reg[I_(URXH)]; |
| } |
| return res; |
| case UTXH: |
| PRINT_DEBUG("UART%d: Trying to read from WO register: %s [%04x]\n", |
| s->channel, exynos4210_uart_regname(offset), offset); |
| break; |
| default: |
| return s->reg[I_(offset)]; |
| } |
| |
| return 0; |
| } |
| |
| static const MemoryRegionOps exynos4210_uart_ops = { |
| .read = exynos4210_uart_read, |
| .write = exynos4210_uart_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| .valid = { |
| .max_access_size = 4, |
| .unaligned = false |
| }, |
| }; |
| |
| static int exynos4210_uart_can_receive(void *opaque) |
| { |
| Exynos4210UartState *s = (Exynos4210UartState *)opaque; |
| |
| return fifo_empty_elements_number(&s->rx); |
| } |
| |
| |
| static void exynos4210_uart_receive(void *opaque, const uint8_t *buf, int size) |
| { |
| Exynos4210UartState *s = (Exynos4210UartState *)opaque; |
| int i; |
| |
| if (s->reg[I_(UFCON)] & UFCON_FIFO_ENABLE) { |
| if (fifo_empty_elements_number(&s->rx) < size) { |
| for (i = 0; i < fifo_empty_elements_number(&s->rx); i++) { |
| fifo_store(&s->rx, buf[i]); |
| } |
| s->reg[I_(UINTSP)] |= UINTSP_ERROR; |
| s->reg[I_(UTRSTAT)] |= UTRSTAT_Rx_BUFFER_DATA_READY; |
| } else { |
| for (i = 0; i < size; i++) { |
| fifo_store(&s->rx, buf[i]); |
| } |
| s->reg[I_(UTRSTAT)] |= UTRSTAT_Rx_BUFFER_DATA_READY; |
| } |
| /* XXX: Around here we maybe should check Rx trigger level */ |
| s->reg[I_(UINTSP)] |= UINTSP_RXD; |
| } else { |
| s->reg[I_(URXH)] = buf[0]; |
| s->reg[I_(UINTSP)] |= UINTSP_RXD; |
| s->reg[I_(UTRSTAT)] |= UTRSTAT_Rx_BUFFER_DATA_READY; |
| } |
| |
| exynos4210_uart_update_irq(s); |
| } |
| |
| |
| static void exynos4210_uart_event(void *opaque, int event) |
| { |
| Exynos4210UartState *s = (Exynos4210UartState *)opaque; |
| |
| if (event == CHR_EVENT_BREAK) { |
| /* When the RxDn is held in logic 0, then a null byte is pushed into the |
| * fifo */ |
| fifo_store(&s->rx, '\0'); |
| s->reg[I_(UERSTAT)] |= UERSTAT_BREAK; |
| exynos4210_uart_update_irq(s); |
| } |
| } |
| |
| |
| static void exynos4210_uart_reset(DeviceState *dev) |
| { |
| Exynos4210UartState *s = EXYNOS4210_UART(dev); |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(exynos4210_uart_regs); i++) { |
| s->reg[I_(exynos4210_uart_regs[i].offset)] = |
| exynos4210_uart_regs[i].reset_value; |
| } |
| |
| fifo_reset(&s->rx); |
| fifo_reset(&s->tx); |
| |
| PRINT_DEBUG("UART%d: Rx FIFO size: %d\n", s->channel, s->rx.size); |
| } |
| |
| static const VMStateDescription vmstate_exynos4210_uart_fifo = { |
| .name = "exynos4210.uart.fifo", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .fields = (VMStateField[]) { |
| VMSTATE_UINT32(sp, Exynos4210UartFIFO), |
| VMSTATE_UINT32(rp, Exynos4210UartFIFO), |
| VMSTATE_VBUFFER_UINT32(data, Exynos4210UartFIFO, 1, NULL, size), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static const VMStateDescription vmstate_exynos4210_uart = { |
| .name = "exynos4210.uart", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .fields = (VMStateField[]) { |
| VMSTATE_STRUCT(rx, Exynos4210UartState, 1, |
| vmstate_exynos4210_uart_fifo, Exynos4210UartFIFO), |
| VMSTATE_UINT32_ARRAY(reg, Exynos4210UartState, |
| EXYNOS4210_UART_REGS_MEM_SIZE / sizeof(uint32_t)), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| DeviceState *exynos4210_uart_create(hwaddr addr, |
| int fifo_size, |
| int channel, |
| Chardev *chr, |
| qemu_irq irq) |
| { |
| DeviceState *dev; |
| SysBusDevice *bus; |
| |
| dev = qdev_create(NULL, TYPE_EXYNOS4210_UART); |
| |
| qdev_prop_set_chr(dev, "chardev", chr); |
| qdev_prop_set_uint32(dev, "channel", channel); |
| qdev_prop_set_uint32(dev, "rx-size", fifo_size); |
| qdev_prop_set_uint32(dev, "tx-size", fifo_size); |
| |
| bus = SYS_BUS_DEVICE(dev); |
| qdev_init_nofail(dev); |
| if (addr != (hwaddr)-1) { |
| sysbus_mmio_map(bus, 0, addr); |
| } |
| sysbus_connect_irq(bus, 0, irq); |
| |
| return dev; |
| } |
| |
| static void exynos4210_uart_init(Object *obj) |
| { |
| SysBusDevice *dev = SYS_BUS_DEVICE(obj); |
| Exynos4210UartState *s = EXYNOS4210_UART(dev); |
| |
| /* memory mapping */ |
| memory_region_init_io(&s->iomem, obj, &exynos4210_uart_ops, s, |
| "exynos4210.uart", EXYNOS4210_UART_REGS_MEM_SIZE); |
| sysbus_init_mmio(dev, &s->iomem); |
| |
| sysbus_init_irq(dev, &s->irq); |
| } |
| |
| static void exynos4210_uart_realize(DeviceState *dev, Error **errp) |
| { |
| Exynos4210UartState *s = EXYNOS4210_UART(dev); |
| |
| qemu_chr_fe_set_handlers(&s->chr, exynos4210_uart_can_receive, |
| exynos4210_uart_receive, exynos4210_uart_event, |
| NULL, s, NULL, true); |
| } |
| |
| static Property exynos4210_uart_properties[] = { |
| DEFINE_PROP_CHR("chardev", Exynos4210UartState, chr), |
| DEFINE_PROP_UINT32("channel", Exynos4210UartState, channel, 0), |
| DEFINE_PROP_UINT32("rx-size", Exynos4210UartState, rx.size, 16), |
| DEFINE_PROP_UINT32("tx-size", Exynos4210UartState, tx.size, 16), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void exynos4210_uart_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| dc->realize = exynos4210_uart_realize; |
| dc->reset = exynos4210_uart_reset; |
| dc->props = exynos4210_uart_properties; |
| dc->vmsd = &vmstate_exynos4210_uart; |
| } |
| |
| static const TypeInfo exynos4210_uart_info = { |
| .name = TYPE_EXYNOS4210_UART, |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_size = sizeof(Exynos4210UartState), |
| .instance_init = exynos4210_uart_init, |
| .class_init = exynos4210_uart_class_init, |
| }; |
| |
| static void exynos4210_uart_register(void) |
| { |
| type_register_static(&exynos4210_uart_info); |
| } |
| |
| type_init(exynos4210_uart_register) |