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authorPaolo Bonzini <pbonzini@redhat.com>2013-03-01 13:59:19 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2013-04-08 18:13:12 +0200
commit49ab747f668f421138d5b40d83fa279c4c5e278d (patch)
tree943225a04eac885aed038731adf058f2250a2f40 /hw/cadence_uart.c
parentce3b494cb504f96992f2d37ebc8f56deed202b06 (diff)
hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, moving them to subdirectories of hw/. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/cadence_uart.c')
-rw-r--r--hw/cadence_uart.c518
1 files changed, 0 insertions, 518 deletions
diff --git a/hw/cadence_uart.c b/hw/cadence_uart.c
deleted file mode 100644
index 421ec998d6..0000000000
--- a/hw/cadence_uart.c
+++ /dev/null
@@ -1,518 +0,0 @@
-/*
- * Device model for Cadence UART
- *
- * Copyright (c) 2010 Xilinx Inc.
- * Copyright (c) 2012 Peter A.G. Crosthwaite (peter.crosthwaite@petalogix.com)
- * Copyright (c) 2012 PetaLogix Pty Ltd.
- * Written by Haibing Ma
- * M.Habib
- *
- * 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.
- *
- * 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 "hw/sysbus.h"
-#include "char/char.h"
-#include "qemu/timer.h"
-
-#ifdef CADENCE_UART_ERR_DEBUG
-#define DB_PRINT(...) do { \
- fprintf(stderr, ": %s: ", __func__); \
- fprintf(stderr, ## __VA_ARGS__); \
- } while (0);
-#else
- #define DB_PRINT(...)
-#endif
-
-#define UART_SR_INTR_RTRIG 0x00000001
-#define UART_SR_INTR_REMPTY 0x00000002
-#define UART_SR_INTR_RFUL 0x00000004
-#define UART_SR_INTR_TEMPTY 0x00000008
-#define UART_SR_INTR_TFUL 0x00000010
-/* bits fields in CSR that correlate to CISR. If any of these bits are set in
- * SR, then the same bit in CISR is set high too */
-#define UART_SR_TO_CISR_MASK 0x0000001F
-
-#define UART_INTR_ROVR 0x00000020
-#define UART_INTR_FRAME 0x00000040
-#define UART_INTR_PARE 0x00000080
-#define UART_INTR_TIMEOUT 0x00000100
-#define UART_INTR_DMSI 0x00000200
-
-#define UART_SR_RACTIVE 0x00000400
-#define UART_SR_TACTIVE 0x00000800
-#define UART_SR_FDELT 0x00001000
-
-#define UART_CR_RXRST 0x00000001
-#define UART_CR_TXRST 0x00000002
-#define UART_CR_RX_EN 0x00000004
-#define UART_CR_RX_DIS 0x00000008
-#define UART_CR_TX_EN 0x00000010
-#define UART_CR_TX_DIS 0x00000020
-#define UART_CR_RST_TO 0x00000040
-#define UART_CR_STARTBRK 0x00000080
-#define UART_CR_STOPBRK 0x00000100
-
-#define UART_MR_CLKS 0x00000001
-#define UART_MR_CHRL 0x00000006
-#define UART_MR_CHRL_SH 1
-#define UART_MR_PAR 0x00000038
-#define UART_MR_PAR_SH 3
-#define UART_MR_NBSTOP 0x000000C0
-#define UART_MR_NBSTOP_SH 6
-#define UART_MR_CHMODE 0x00000300
-#define UART_MR_CHMODE_SH 8
-#define UART_MR_UCLKEN 0x00000400
-#define UART_MR_IRMODE 0x00000800
-
-#define UART_DATA_BITS_6 (0x3 << UART_MR_CHRL_SH)
-#define UART_DATA_BITS_7 (0x2 << UART_MR_CHRL_SH)
-#define UART_PARITY_ODD (0x1 << UART_MR_PAR_SH)
-#define UART_PARITY_EVEN (0x0 << UART_MR_PAR_SH)
-#define UART_STOP_BITS_1 (0x3 << UART_MR_NBSTOP_SH)
-#define UART_STOP_BITS_2 (0x2 << UART_MR_NBSTOP_SH)
-#define NORMAL_MODE (0x0 << UART_MR_CHMODE_SH)
-#define ECHO_MODE (0x1 << UART_MR_CHMODE_SH)
-#define LOCAL_LOOPBACK (0x2 << UART_MR_CHMODE_SH)
-#define REMOTE_LOOPBACK (0x3 << UART_MR_CHMODE_SH)
-
-#define RX_FIFO_SIZE 16
-#define TX_FIFO_SIZE 16
-#define UART_INPUT_CLK 50000000
-
-#define R_CR (0x00/4)
-#define R_MR (0x04/4)
-#define R_IER (0x08/4)
-#define R_IDR (0x0C/4)
-#define R_IMR (0x10/4)
-#define R_CISR (0x14/4)
-#define R_BRGR (0x18/4)
-#define R_RTOR (0x1C/4)
-#define R_RTRIG (0x20/4)
-#define R_MCR (0x24/4)
-#define R_MSR (0x28/4)
-#define R_SR (0x2C/4)
-#define R_TX_RX (0x30/4)
-#define R_BDIV (0x34/4)
-#define R_FDEL (0x38/4)
-#define R_PMIN (0x3C/4)
-#define R_PWID (0x40/4)
-#define R_TTRIG (0x44/4)
-
-#define R_MAX (R_TTRIG + 1)
-
-typedef struct {
- SysBusDevice busdev;
- MemoryRegion iomem;
- uint32_t r[R_MAX];
- uint8_t r_fifo[RX_FIFO_SIZE];
- uint32_t rx_wpos;
- uint32_t rx_count;
- uint64_t char_tx_time;
- CharDriverState *chr;
- qemu_irq irq;
- struct QEMUTimer *fifo_trigger_handle;
- struct QEMUTimer *tx_time_handle;
-} UartState;
-
-static void uart_update_status(UartState *s)
-{
- s->r[R_CISR] |= s->r[R_SR] & UART_SR_TO_CISR_MASK;
- qemu_set_irq(s->irq, !!(s->r[R_IMR] & s->r[R_CISR]));
-}
-
-static void fifo_trigger_update(void *opaque)
-{
- UartState *s = (UartState *)opaque;
-
- s->r[R_CISR] |= UART_INTR_TIMEOUT;
-
- uart_update_status(s);
-}
-
-static void uart_tx_redo(UartState *s)
-{
- uint64_t new_tx_time = qemu_get_clock_ns(vm_clock);
-
- qemu_mod_timer(s->tx_time_handle, new_tx_time + s->char_tx_time);
-
- s->r[R_SR] |= UART_SR_INTR_TEMPTY;
-
- uart_update_status(s);
-}
-
-static void uart_tx_write(void *opaque)
-{
- UartState *s = (UartState *)opaque;
-
- uart_tx_redo(s);
-}
-
-static void uart_rx_reset(UartState *s)
-{
- s->rx_wpos = 0;
- s->rx_count = 0;
- qemu_chr_accept_input(s->chr);
-
- s->r[R_SR] |= UART_SR_INTR_REMPTY;
- s->r[R_SR] &= ~UART_SR_INTR_RFUL;
-}
-
-static void uart_tx_reset(UartState *s)
-{
- s->r[R_SR] |= UART_SR_INTR_TEMPTY;
- s->r[R_SR] &= ~UART_SR_INTR_TFUL;
-}
-
-static void uart_send_breaks(UartState *s)
-{
- int break_enabled = 1;
-
- qemu_chr_fe_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_BREAK,
- &break_enabled);
-}
-
-static void uart_parameters_setup(UartState *s)
-{
- QEMUSerialSetParams ssp;
- unsigned int baud_rate, packet_size;
-
- baud_rate = (s->r[R_MR] & UART_MR_CLKS) ?
- UART_INPUT_CLK / 8 : UART_INPUT_CLK;
-
- ssp.speed = baud_rate / (s->r[R_BRGR] * (s->r[R_BDIV] + 1));
- packet_size = 1;
-
- switch (s->r[R_MR] & UART_MR_PAR) {
- case UART_PARITY_EVEN:
- ssp.parity = 'E';
- packet_size++;
- break;
- case UART_PARITY_ODD:
- ssp.parity = 'O';
- packet_size++;
- break;
- default:
- ssp.parity = 'N';
- break;
- }
-
- switch (s->r[R_MR] & UART_MR_CHRL) {
- case UART_DATA_BITS_6:
- ssp.data_bits = 6;
- break;
- case UART_DATA_BITS_7:
- ssp.data_bits = 7;
- break;
- default:
- ssp.data_bits = 8;
- break;
- }
-
- switch (s->r[R_MR] & UART_MR_NBSTOP) {
- case UART_STOP_BITS_1:
- ssp.stop_bits = 1;
- break;
- default:
- ssp.stop_bits = 2;
- break;
- }
-
- packet_size += ssp.data_bits + ssp.stop_bits;
- s->char_tx_time = (get_ticks_per_sec() / ssp.speed) * packet_size;
- qemu_chr_fe_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp);
-}
-
-static int uart_can_receive(void *opaque)
-{
- UartState *s = (UartState *)opaque;
-
- return RX_FIFO_SIZE - s->rx_count;
-}
-
-static void uart_ctrl_update(UartState *s)
-{
- if (s->r[R_CR] & UART_CR_TXRST) {
- uart_tx_reset(s);
- }
-
- if (s->r[R_CR] & UART_CR_RXRST) {
- uart_rx_reset(s);
- }
-
- s->r[R_CR] &= ~(UART_CR_TXRST | UART_CR_RXRST);
-
- if ((s->r[R_CR] & UART_CR_TX_EN) && !(s->r[R_CR] & UART_CR_TX_DIS)) {
- uart_tx_redo(s);
- }
-
- if (s->r[R_CR] & UART_CR_STARTBRK && !(s->r[R_CR] & UART_CR_STOPBRK)) {
- uart_send_breaks(s);
- }
-}
-
-static void uart_write_rx_fifo(void *opaque, const uint8_t *buf, int size)
-{
- UartState *s = (UartState *)opaque;
- uint64_t new_rx_time = qemu_get_clock_ns(vm_clock);
- int i;
-
- if ((s->r[R_CR] & UART_CR_RX_DIS) || !(s->r[R_CR] & UART_CR_RX_EN)) {
- return;
- }
-
- s->r[R_SR] &= ~UART_SR_INTR_REMPTY;
-
- if (s->rx_count == RX_FIFO_SIZE) {
- s->r[R_CISR] |= UART_INTR_ROVR;
- } else {
- for (i = 0; i < size; i++) {
- s->r_fifo[s->rx_wpos] = buf[i];
- s->rx_wpos = (s->rx_wpos + 1) % RX_FIFO_SIZE;
- s->rx_count++;
-
- if (s->rx_count == RX_FIFO_SIZE) {
- s->r[R_SR] |= UART_SR_INTR_RFUL;
- break;
- }
-
- if (s->rx_count >= s->r[R_RTRIG]) {
- s->r[R_SR] |= UART_SR_INTR_RTRIG;
- }
- }
- qemu_mod_timer(s->fifo_trigger_handle, new_rx_time +
- (s->char_tx_time * 4));
- }
- uart_update_status(s);
-}
-
-static void uart_write_tx_fifo(UartState *s, const uint8_t *buf, int size)
-{
- if ((s->r[R_CR] & UART_CR_TX_DIS) || !(s->r[R_CR] & UART_CR_TX_EN)) {
- return;
- }
-
- while (size) {
- size -= qemu_chr_fe_write(s->chr, buf, size);
- }
-}
-
-static void uart_receive(void *opaque, const uint8_t *buf, int size)
-{
- UartState *s = (UartState *)opaque;
- uint32_t ch_mode = s->r[R_MR] & UART_MR_CHMODE;
-
- if (ch_mode == NORMAL_MODE || ch_mode == ECHO_MODE) {
- uart_write_rx_fifo(opaque, buf, size);
- }
- if (ch_mode == REMOTE_LOOPBACK || ch_mode == ECHO_MODE) {
- uart_write_tx_fifo(s, buf, size);
- }
-}
-
-static void uart_event(void *opaque, int event)
-{
- UartState *s = (UartState *)opaque;
- uint8_t buf = '\0';
-
- if (event == CHR_EVENT_BREAK) {
- uart_write_rx_fifo(opaque, &buf, 1);
- }
-
- uart_update_status(s);
-}
-
-static void uart_read_rx_fifo(UartState *s, uint32_t *c)
-{
- if ((s->r[R_CR] & UART_CR_RX_DIS) || !(s->r[R_CR] & UART_CR_RX_EN)) {
- return;
- }
-
- s->r[R_SR] &= ~UART_SR_INTR_RFUL;
-
- if (s->rx_count) {
- uint32_t rx_rpos =
- (RX_FIFO_SIZE + s->rx_wpos - s->rx_count) % RX_FIFO_SIZE;
- *c = s->r_fifo[rx_rpos];
- s->rx_count--;
-
- if (!s->rx_count) {
- s->r[R_SR] |= UART_SR_INTR_REMPTY;
- }
- qemu_chr_accept_input(s->chr);
- } else {
- *c = 0;
- s->r[R_SR] |= UART_SR_INTR_REMPTY;
- }
-
- if (s->rx_count < s->r[R_RTRIG]) {
- s->r[R_SR] &= ~UART_SR_INTR_RTRIG;
- }
- uart_update_status(s);
-}
-
-static void uart_write(void *opaque, hwaddr offset,
- uint64_t value, unsigned size)
-{
- UartState *s = (UartState *)opaque;
-
- DB_PRINT(" offset:%x data:%08x\n", (unsigned)offset, (unsigned)value);
- offset >>= 2;
- switch (offset) {
- case R_IER: /* ier (wts imr) */
- s->r[R_IMR] |= value;
- break;
- case R_IDR: /* idr (wtc imr) */
- s->r[R_IMR] &= ~value;
- break;
- case R_IMR: /* imr (read only) */
- break;
- case R_CISR: /* cisr (wtc) */
- s->r[R_CISR] &= ~value;
- break;
- case R_TX_RX: /* UARTDR */
- switch (s->r[R_MR] & UART_MR_CHMODE) {
- case NORMAL_MODE:
- uart_write_tx_fifo(s, (uint8_t *) &value, 1);
- break;
- case LOCAL_LOOPBACK:
- uart_write_rx_fifo(opaque, (uint8_t *) &value, 1);
- break;
- }
- break;
- default:
- s->r[offset] = value;
- }
-
- switch (offset) {
- case R_CR:
- uart_ctrl_update(s);
- break;
- case R_MR:
- uart_parameters_setup(s);
- break;
- }
-}
-
-static uint64_t uart_read(void *opaque, hwaddr offset,
- unsigned size)
-{
- UartState *s = (UartState *)opaque;
- uint32_t c = 0;
-
- offset >>= 2;
- if (offset >= R_MAX) {
- c = 0;
- } else if (offset == R_TX_RX) {
- uart_read_rx_fifo(s, &c);
- } else {
- c = s->r[offset];
- }
-
- DB_PRINT(" offset:%x data:%08x\n", (unsigned)(offset << 2), (unsigned)c);
- return c;
-}
-
-static const MemoryRegionOps uart_ops = {
- .read = uart_read,
- .write = uart_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static void cadence_uart_reset(UartState *s)
-{
- s->r[R_CR] = 0x00000128;
- s->r[R_IMR] = 0;
- s->r[R_CISR] = 0;
- s->r[R_RTRIG] = 0x00000020;
- s->r[R_BRGR] = 0x0000000F;
- s->r[R_TTRIG] = 0x00000020;
-
- uart_rx_reset(s);
- uart_tx_reset(s);
-
- s->rx_count = 0;
- s->rx_wpos = 0;
-}
-
-static int cadence_uart_init(SysBusDevice *dev)
-{
- UartState *s = FROM_SYSBUS(UartState, dev);
-
- memory_region_init_io(&s->iomem, &uart_ops, s, "uart", 0x1000);
- sysbus_init_mmio(dev, &s->iomem);
- sysbus_init_irq(dev, &s->irq);
-
- s->fifo_trigger_handle = qemu_new_timer_ns(vm_clock,
- (QEMUTimerCB *)fifo_trigger_update, s);
-
- s->tx_time_handle = qemu_new_timer_ns(vm_clock,
- (QEMUTimerCB *)uart_tx_write, s);
-
- s->char_tx_time = (get_ticks_per_sec() / 9600) * 10;
-
- s->chr = qemu_char_get_next_serial();
-
- cadence_uart_reset(s);
-
- if (s->chr) {
- qemu_chr_add_handlers(s->chr, uart_can_receive, uart_receive,
- uart_event, s);
- }
-
- return 0;
-}
-
-static int cadence_uart_post_load(void *opaque, int version_id)
-{
- UartState *s = opaque;
-
- uart_parameters_setup(s);
- uart_update_status(s);
- return 0;
-}
-
-static const VMStateDescription vmstate_cadence_uart = {
- .name = "cadence_uart",
- .version_id = 1,
- .minimum_version_id = 1,
- .minimum_version_id_old = 1,
- .post_load = cadence_uart_post_load,
- .fields = (VMStateField[]) {
- VMSTATE_UINT32_ARRAY(r, UartState, R_MAX),
- VMSTATE_UINT8_ARRAY(r_fifo, UartState, RX_FIFO_SIZE),
- VMSTATE_UINT32(rx_count, UartState),
- VMSTATE_UINT32(rx_wpos, UartState),
- VMSTATE_TIMER(fifo_trigger_handle, UartState),
- VMSTATE_TIMER(tx_time_handle, UartState),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void cadence_uart_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
-
- sdc->init = cadence_uart_init;
- dc->vmsd = &vmstate_cadence_uart;
-}
-
-static const TypeInfo cadence_uart_info = {
- .name = "cadence_uart",
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(UartState),
- .class_init = cadence_uart_class_init,
-};
-
-static void cadence_uart_register_types(void)
-{
- type_register_static(&cadence_uart_info);
-}
-
-type_init(cadence_uart_register_types)