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-rw-r--r--hw/etraxfs.c25
-rw-r--r--hw/etraxfs.h42
-rw-r--r--hw/etraxfs_pic.c53
-rw-r--r--hw/etraxfs_timer.c29
4 files changed, 119 insertions, 30 deletions
diff --git a/hw/etraxfs.c b/hw/etraxfs.c
index 72482e4..4348151 100644
--- a/hw/etraxfs.c
+++ b/hw/etraxfs.c
@@ -30,16 +30,7 @@
#include "devices.h"
#include "boards.h"
-#include "etraxfs_dma.h"
-
-/* Init functions for different blocks. */
-extern qemu_irq *etraxfs_pic_init(CPUState *env, target_phys_addr_t base);
-void etraxfs_timer_init(CPUState *env, qemu_irq *irqs,
- target_phys_addr_t base);
-void *etraxfs_eth_init(NICInfo *nd, CPUState *env,
- qemu_irq *irq, target_phys_addr_t base);
-void etraxfs_ser_init(CPUState *env, qemu_irq *irq, CharDriverState *chr,
- target_phys_addr_t base);
+#include "etraxfs.h"
#define FLASH_SIZE 0x2000000
#define INTMEM_SIZE (128 * 1024)
@@ -62,7 +53,7 @@ void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
const char *initrd_filename, const char *cpu_model)
{
CPUState *env;
- qemu_irq *pic;
+ struct etraxfs_pic *pic;
void *etraxfs_dmac;
struct etraxfs_dma_client *eth[2] = {NULL, NULL};
int kernel_size;
@@ -110,13 +101,13 @@ void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
etraxfs_dmac = etraxfs_dmac_init(env, 0xb0000000, 10);
for (i = 0; i < 10; i++) {
/* On ETRAX, odd numbered channels are inputs. */
- etraxfs_dmac_connect(etraxfs_dmac, i, pic + 7 + i, i & 1);
+ etraxfs_dmac_connect(etraxfs_dmac, i, pic->irq + 7 + i, i & 1);
}
/* Add the two ethernet blocks. */
- eth[0] = etraxfs_eth_init(&nd_table[0], env, pic + 25, 0xb0034000);
+ eth[0] = etraxfs_eth_init(&nd_table[0], env, pic->irq + 25, 0xb0034000);
if (nb_nics > 1)
- eth[1] = etraxfs_eth_init(&nd_table[1], env, pic + 26, 0xb0036000);
+ eth[1] = etraxfs_eth_init(&nd_table[1], env, pic->irq + 26, 0xb0036000);
/* The DMA Connector block is missing, hardwire things for now. */
etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
@@ -127,12 +118,12 @@ void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
}
/* 2 timers. */
- etraxfs_timer_init(env, pic + 0x1b, 0xb001e000);
- etraxfs_timer_init(env, pic + 0x1b, 0xb005e000);
+ etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0xb001e000);
+ etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0xb005e000);
for (i = 0; i < 4; i++) {
if (serial_hds[i]) {
- etraxfs_ser_init(env, pic + 0x14 + i,
+ etraxfs_ser_init(env, pic->irq + 0x14 + i,
serial_hds[i], 0xb0026000 + i * 0x2000);
}
}
diff --git a/hw/etraxfs.h b/hw/etraxfs.h
new file mode 100644
index 0000000..0c9fdbb
--- /dev/null
+++ b/hw/etraxfs.h
@@ -0,0 +1,42 @@
+/*
+ * QEMU ETRAX System Emulator
+ *
+ * Copyright (c) 2008 Edgar E. Iglesias, Axis Communications AB.
+ *
+ * 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 "etraxfs_dma.h"
+
+struct etraxfs_pic
+{
+ qemu_irq *irq;
+ qemu_irq *nmi;
+ qemu_irq *guru;
+
+ void *internal;
+};
+
+struct etraxfs_pic *etraxfs_pic_init(CPUState *env, target_phys_addr_t base);
+void etraxfs_timer_init(CPUState *env, qemu_irq *irqs, qemu_irq *nmi,
+ target_phys_addr_t base);
+void *etraxfs_eth_init(NICInfo *nd, CPUState *env,
+ qemu_irq *irq, target_phys_addr_t base);
+void etraxfs_ser_init(CPUState *env, qemu_irq *irq, CharDriverState *chr,
+ target_phys_addr_t base);
diff --git a/hw/etraxfs_pic.c b/hw/etraxfs_pic.c
index 7022c99..d145bec 100644
--- a/hw/etraxfs_pic.c
+++ b/hw/etraxfs_pic.c
@@ -24,6 +24,7 @@
#include <stdio.h>
#include "hw.h"
+#include "etraxfs.h"
#define D(x)
@@ -143,7 +144,7 @@ void irq_info(void)
{
}
-static void etraxfs_pic_handler(void *opaque, int irq, int level)
+static void irq_handler(void *opaque, int irq, int level)
{
struct fs_pic_state_t *fs = (void *)opaque;
CPUState *env = fs->env;
@@ -187,22 +188,56 @@ static void etraxfs_pic_handler(void *opaque, int irq, int level)
}
}
-qemu_irq *etraxfs_pic_init(CPUState *env, target_phys_addr_t base)
+static void nmi_handler(void *opaque, int irq, int level)
+{
+ struct fs_pic_state_t *fs = (void *)opaque;
+ CPUState *env = fs->env;
+ uint32_t mask;
+
+ mask = 1 << irq;
+ if (level)
+ fs->r_nmi |= mask;
+ else
+ fs->r_nmi &= ~mask;
+
+ if (fs->r_nmi)
+ cpu_interrupt(env, CPU_INTERRUPT_NMI);
+ else
+ cpu_reset_interrupt(env, CPU_INTERRUPT_NMI);
+}
+
+static void guru_handler(void *opaque, int irq, int level)
+{
+ struct fs_pic_state_t *fs = (void *)opaque;
+ CPUState *env = fs->env;
+ cpu_abort(env, "%s unsupported exception\n", __func__);
+
+}
+
+
+struct etraxfs_pic *etraxfs_pic_init(CPUState *env, target_phys_addr_t base)
{
- struct fs_pic_state_t *fs;
- qemu_irq *pic;
+ struct fs_pic_state_t *fs = NULL;
+ struct etraxfs_pic *pic = NULL;
int intr_vect_regs;
- fs = qemu_mallocz(sizeof *fs);
- if (!fs)
- return NULL;
- fs->env = env;
+ pic = qemu_mallocz(sizeof *pic);
+ pic->internal = fs = qemu_mallocz(sizeof *fs);
+ if (!fs || !pic)
+ goto err;
- pic = qemu_allocate_irqs(etraxfs_pic_handler, fs, 30);
+ fs->env = env;
+ pic->irq = qemu_allocate_irqs(irq_handler, fs, 30);
+ pic->nmi = qemu_allocate_irqs(nmi_handler, fs, 2);
+ pic->guru = qemu_allocate_irqs(guru_handler, fs, 1);
intr_vect_regs = cpu_register_io_memory(0, pic_read, pic_write, fs);
cpu_register_physical_memory(base, 0x14, intr_vect_regs);
fs->base = base;
return pic;
+ err:
+ free(pic);
+ free(fs);
+ return NULL;
}
diff --git a/hw/etraxfs_timer.c b/hw/etraxfs_timer.c
index 7353d45..e996c57 100644
--- a/hw/etraxfs_timer.c
+++ b/hw/etraxfs_timer.c
@@ -46,6 +46,7 @@
struct fs_timer_t {
CPUState *env;
qemu_irq *irq;
+ qemu_irq *nmi;
target_phys_addr_t base;
QEMUBH *bh_t0;
@@ -56,6 +57,8 @@ struct fs_timer_t {
ptimer_state *ptimer_wd;
struct timeval last;
+ int wd_hits;
+
/* Control registers. */
uint32_t rw_tmr0_div;
uint32_t r_tmr0_data;
@@ -129,6 +132,7 @@ static void update_ctrl(struct fs_timer_t *t, int tnum)
unsigned int freq_hz;
unsigned int div;
uint32_t ctrl;
+
ptimer_state *timer;
if (tnum == 0) {
@@ -163,8 +167,8 @@ static void update_ctrl(struct fs_timer_t *t, int tnum)
D(printf ("freq_hz=%d div=%d\n", freq_hz, div));
div = div * TIMER_SLOWDOWN;
- div >>= 15;
- freq_hz >>= 15;
+ div >>= 10;
+ freq_hz >>= 10;
ptimer_set_freq(timer, freq_hz);
ptimer_set_limit(timer, div, 0);
@@ -216,7 +220,18 @@ static void timer1_hit(void *opaque)
static void watchdog_hit(void *opaque)
{
- qemu_system_reset_request();
+ struct fs_timer_t *t = opaque;
+ if (t->wd_hits == 0) {
+ /* real hw gives a single tick before reseting but we are
+ a bit friendlier to compensate for our slower execution. */
+ ptimer_set_count(t->ptimer_wd, 10);
+ ptimer_run(t->ptimer_wd, 1);
+ qemu_irq_raise(t->nmi[0]);
+ }
+ else
+ qemu_system_reset_request();
+
+ t->wd_hits++;
}
static inline void timer_watchdog_update(struct fs_timer_t *t, uint32_t value)
@@ -237,6 +252,11 @@ static inline void timer_watchdog_update(struct fs_timer_t *t, uint32_t value)
D(printf("en=%d new_key=%x oldkey=%x cmd=%d cnt=%d\n",
wd_en, new_key, wd_key, new_cmd, wd_cnt));
+ if (t->wd_hits)
+ qemu_irq_lower(t->nmi[0]);
+
+ t->wd_hits = 0;
+
ptimer_set_freq(t->ptimer_wd, 760);
if (wd_cnt == 0)
wd_cnt = 256;
@@ -320,7 +340,7 @@ static void etraxfs_timer_reset(void *opaque)
qemu_irq_lower(t->irq[0]);
}
-void etraxfs_timer_init(CPUState *env, qemu_irq *irqs,
+void etraxfs_timer_init(CPUState *env, qemu_irq *irqs, qemu_irq *nmi,
target_phys_addr_t base)
{
static struct fs_timer_t *t;
@@ -337,6 +357,7 @@ void etraxfs_timer_init(CPUState *env, qemu_irq *irqs,
t->ptimer_t1 = ptimer_init(t->bh_t1);
t->ptimer_wd = ptimer_init(t->bh_wd);
t->irq = irqs;
+ t->nmi = nmi;
t->env = env;
t->base = base;
generated by cgit v1.1 at 2024-12-27 11:16:52 +0000