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Diffstat (limited to 'qemu/hw/char/stm32f2xx_usart.c')
-rw-r--r--qemu/hw/char/stm32f2xx_usart.c233
1 files changed, 0 insertions, 233 deletions
diff --git a/qemu/hw/char/stm32f2xx_usart.c b/qemu/hw/char/stm32f2xx_usart.c
deleted file mode 100644
index a94d61ceb..000000000
--- a/qemu/hw/char/stm32f2xx_usart.c
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- * STM32F2XX USART
- *
- * Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
- *
- * 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/char/stm32f2xx_usart.h"
-
-#ifndef STM_USART_ERR_DEBUG
-#define STM_USART_ERR_DEBUG 0
-#endif
-
-#define DB_PRINT_L(lvl, fmt, args...) do { \
- if (STM_USART_ERR_DEBUG >= lvl) { \
- qemu_log("%s: " fmt, __func__, ## args); \
- } \
-} while (0);
-
-#define DB_PRINT(fmt, args...) DB_PRINT_L(1, fmt, ## args)
-
-static int stm32f2xx_usart_can_receive(void *opaque)
-{
- STM32F2XXUsartState *s = opaque;
-
- if (!(s->usart_sr & USART_SR_RXNE)) {
- return 1;
- }
-
- return 0;
-}
-
-static void stm32f2xx_usart_receive(void *opaque, const uint8_t *buf, int size)
-{
- STM32F2XXUsartState *s = opaque;
-
- s->usart_dr = *buf;
-
- if (!(s->usart_cr1 & USART_CR1_UE && s->usart_cr1 & USART_CR1_RE)) {
- /* USART not enabled - drop the chars */
- DB_PRINT("Dropping the chars\n");
- return;
- }
-
- s->usart_sr |= USART_SR_RXNE;
-
- if (s->usart_cr1 & USART_CR1_RXNEIE) {
- qemu_set_irq(s->irq, 1);
- }
-
- DB_PRINT("Receiving: %c\n", s->usart_dr);
-}
-
-static void stm32f2xx_usart_reset(DeviceState *dev)
-{
- STM32F2XXUsartState *s = STM32F2XX_USART(dev);
-
- s->usart_sr = USART_SR_RESET;
- s->usart_dr = 0x00000000;
- s->usart_brr = 0x00000000;
- s->usart_cr1 = 0x00000000;
- s->usart_cr2 = 0x00000000;
- s->usart_cr3 = 0x00000000;
- s->usart_gtpr = 0x00000000;
-
- qemu_set_irq(s->irq, 0);
-}
-
-static uint64_t stm32f2xx_usart_read(void *opaque, hwaddr addr,
- unsigned int size)
-{
- STM32F2XXUsartState *s = opaque;
- uint64_t retvalue;
-
- DB_PRINT("Read 0x%"HWADDR_PRIx"\n", addr);
-
- switch (addr) {
- case USART_SR:
- retvalue = s->usart_sr;
- s->usart_sr &= ~USART_SR_TC;
- if (s->chr) {
- qemu_chr_accept_input(s->chr);
- }
- return retvalue;
- case USART_DR:
- DB_PRINT("Value: 0x%" PRIx32 ", %c\n", s->usart_dr, (char) s->usart_dr);
- s->usart_sr |= USART_SR_TXE;
- s->usart_sr &= ~USART_SR_RXNE;
- if (s->chr) {
- qemu_chr_accept_input(s->chr);
- }
- qemu_set_irq(s->irq, 0);
- return s->usart_dr & 0x3FF;
- case USART_BRR:
- return s->usart_brr;
- case USART_CR1:
- return s->usart_cr1;
- case USART_CR2:
- return s->usart_cr2;
- case USART_CR3:
- return s->usart_cr3;
- case USART_GTPR:
- return s->usart_gtpr;
- default:
- qemu_log_mask(LOG_GUEST_ERROR,
- "%s: Bad offset 0x%"HWADDR_PRIx"\n", __func__, addr);
- return 0;
- }
-
- return 0;
-}
-
-static void stm32f2xx_usart_write(void *opaque, hwaddr addr,
- uint64_t val64, unsigned int size)
-{
- STM32F2XXUsartState *s = opaque;
- uint32_t value = val64;
- unsigned char ch;
-
- DB_PRINT("Write 0x%" PRIx32 ", 0x%"HWADDR_PRIx"\n", value, addr);
-
- switch (addr) {
- case USART_SR:
- if (value <= 0x3FF) {
- s->usart_sr = value;
- } else {
- s->usart_sr &= value;
- }
- if (!(s->usart_sr & USART_SR_RXNE)) {
- qemu_set_irq(s->irq, 0);
- }
- return;
- case USART_DR:
- if (value < 0xF000) {
- ch = value;
- if (s->chr) {
- qemu_chr_fe_write_all(s->chr, &ch, 1);
- }
- s->usart_sr |= USART_SR_TC;
- s->usart_sr &= ~USART_SR_TXE;
- }
- return;
- case USART_BRR:
- s->usart_brr = value;
- return;
- case USART_CR1:
- s->usart_cr1 = value;
- if (s->usart_cr1 & USART_CR1_RXNEIE &&
- s->usart_sr & USART_SR_RXNE) {
- qemu_set_irq(s->irq, 1);
- }
- return;
- case USART_CR2:
- s->usart_cr2 = value;
- return;
- case USART_CR3:
- s->usart_cr3 = value;
- return;
- case USART_GTPR:
- s->usart_gtpr = value;
- return;
- default:
- qemu_log_mask(LOG_GUEST_ERROR,
- "%s: Bad offset 0x%"HWADDR_PRIx"\n", __func__, addr);
- }
-}
-
-static const MemoryRegionOps stm32f2xx_usart_ops = {
- .read = stm32f2xx_usart_read,
- .write = stm32f2xx_usart_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static void stm32f2xx_usart_init(Object *obj)
-{
- STM32F2XXUsartState *s = STM32F2XX_USART(obj);
-
- sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq);
-
- memory_region_init_io(&s->mmio, obj, &stm32f2xx_usart_ops, s,
- TYPE_STM32F2XX_USART, 0x2000);
- sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
-
- /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
- s->chr = qemu_char_get_next_serial();
-
- if (s->chr) {
- qemu_chr_add_handlers(s->chr, stm32f2xx_usart_can_receive,
- stm32f2xx_usart_receive, NULL, s);
- }
-}
-
-static void stm32f2xx_usart_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- dc->reset = stm32f2xx_usart_reset;
- /* Reason: instance_init() method uses qemu_char_get_next_serial() */
- dc->cannot_instantiate_with_device_add_yet = true;
-}
-
-static const TypeInfo stm32f2xx_usart_info = {
- .name = TYPE_STM32F2XX_USART,
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(STM32F2XXUsartState),
- .instance_init = stm32f2xx_usart_init,
- .class_init = stm32f2xx_usart_class_init,
-};
-
-static void stm32f2xx_usart_register_types(void)
-{
- type_register_static(&stm32f2xx_usart_info);
-}
-
-type_init(stm32f2xx_usart_register_types)