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Diffstat (limited to 'hw/ide/cmd646.c')
-rw-r--r--hw/ide/cmd646.c94
1 files changed, 85 insertions, 9 deletions
diff --git a/hw/ide/cmd646.c b/hw/ide/cmd646.c
index a8e35fe38f..74d0deb6dd 100644
--- a/hw/ide/cmd646.c
+++ b/hw/ide/cmd646.c
@@ -33,6 +33,13 @@
#include <hw/ide/pci.h>
/* CMD646 specific */
+#define CFR 0x50
+#define CFR_INTR_CH0 0x04
+#define CNTRL 0x51
+#define CNTRL_EN_CH0 0x04
+#define CNTRL_EN_CH1 0x08
+#define ARTTIM23 0x57
+#define ARTTIM23_INTR_CH1 0x10
#define MRDMODE 0x71
#define MRDMODE_INTR_CH0 0x04
#define MRDMODE_INTR_CH1 0x08
@@ -41,7 +48,7 @@
#define UDIDETCR0 0x73
#define UDIDETCR1 0x7B
-static void cmd646_update_irq(PCIIDEState *d);
+static void cmd646_update_irq(PCIDevice *pd);
static uint64_t cmd646_cmd_read(void *opaque, hwaddr addr,
unsigned size)
@@ -123,6 +130,38 @@ static void setup_cmd646_bar(PCIIDEState *d, int bus_num)
"cmd646-data", 8);
}
+static void cmd646_update_dma_interrupts(PCIDevice *pd)
+{
+ /* Sync DMA interrupt status from UDMA interrupt status */
+ if (pd->config[MRDMODE] & MRDMODE_INTR_CH0) {
+ pd->config[CFR] |= CFR_INTR_CH0;
+ } else {
+ pd->config[CFR] &= ~CFR_INTR_CH0;
+ }
+
+ if (pd->config[MRDMODE] & MRDMODE_INTR_CH1) {
+ pd->config[ARTTIM23] |= ARTTIM23_INTR_CH1;
+ } else {
+ pd->config[ARTTIM23] &= ~ARTTIM23_INTR_CH1;
+ }
+}
+
+static void cmd646_update_udma_interrupts(PCIDevice *pd)
+{
+ /* Sync UDMA interrupt status from DMA interrupt status */
+ if (pd->config[CFR] & CFR_INTR_CH0) {
+ pd->config[MRDMODE] |= MRDMODE_INTR_CH0;
+ } else {
+ pd->config[MRDMODE] &= ~MRDMODE_INTR_CH0;
+ }
+
+ if (pd->config[ARTTIM23] & ARTTIM23_INTR_CH1) {
+ pd->config[MRDMODE] |= MRDMODE_INTR_CH1;
+ } else {
+ pd->config[MRDMODE] &= ~MRDMODE_INTR_CH1;
+ }
+}
+
static uint64_t bmdma_read(void *opaque, hwaddr addr,
unsigned size)
{
@@ -181,7 +220,8 @@ static void bmdma_write(void *opaque, hwaddr addr,
case 1:
pci_dev->config[MRDMODE] =
(pci_dev->config[MRDMODE] & ~0x30) | (val & 0x30);
- cmd646_update_irq(bm->pci_dev);
+ cmd646_update_dma_interrupts(pci_dev);
+ cmd646_update_irq(pci_dev);
break;
case 2:
bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);
@@ -219,11 +259,8 @@ static void bmdma_setup_bar(PCIIDEState *d)
}
}
-/* XXX: call it also when the MRDMODE is changed from the PCI config
- registers */
-static void cmd646_update_irq(PCIIDEState *d)
+static void cmd646_update_irq(PCIDevice *pd)
{
- PCIDevice *pd = PCI_DEVICE(d);
int pci_level;
pci_level = ((pd->config[MRDMODE] & MRDMODE_INTR_CH0) &&
@@ -246,7 +283,8 @@ static void cmd646_set_irq(void *opaque, int channel, int level)
} else {
pd->config[MRDMODE] &= ~irq_mask;
}
- cmd646_update_irq(d);
+ cmd646_update_dma_interrupts(pd);
+ cmd646_update_irq(pd);
}
static void cmd646_reset(void *opaque)
@@ -259,6 +297,34 @@ static void cmd646_reset(void *opaque)
}
}
+static uint32_t cmd646_pci_config_read(PCIDevice *d,
+ uint32_t address, int len)
+{
+ return pci_default_read_config(d, address, len);
+}
+
+static void cmd646_pci_config_write(PCIDevice *d, uint32_t addr, uint32_t val,
+ int l)
+{
+ uint32_t i;
+
+ pci_default_write_config(d, addr, val, l);
+
+ for (i = addr; i < addr + l; i++) {
+ switch (i) {
+ case CFR:
+ case ARTTIM23:
+ cmd646_update_udma_interrupts(d);
+ break;
+ case MRDMODE:
+ cmd646_update_dma_interrupts(d);
+ break;
+ }
+ }
+
+ cmd646_update_irq(d);
+}
+
/* CMD646 PCI IDE controller */
static int pci_cmd646_ide_initfn(PCIDevice *dev)
{
@@ -269,12 +335,20 @@ static int pci_cmd646_ide_initfn(PCIDevice *dev)
pci_conf[PCI_CLASS_PROG] = 0x8f;
- pci_conf[0x51] = 0x04; // enable IDE0
+ pci_conf[CNTRL] = CNTRL_EN_CH0; // enable IDE0
if (d->secondary) {
/* XXX: if not enabled, really disable the seconday IDE controller */
- pci_conf[0x51] |= 0x08; /* enable IDE1 */
+ pci_conf[CNTRL] |= CNTRL_EN_CH1; /* enable IDE1 */
}
+ /* Set write-to-clear interrupt bits */
+ dev->wmask[CFR] = 0x0;
+ dev->w1cmask[CFR] = CFR_INTR_CH0;
+ dev->wmask[ARTTIM23] = 0x0;
+ dev->w1cmask[ARTTIM23] = ARTTIM23_INTR_CH1;
+ dev->wmask[MRDMODE] = 0x0;
+ dev->w1cmask[MRDMODE] = MRDMODE_INTR_CH0 | MRDMODE_INTR_CH1;
+
setup_cmd646_bar(d, 0);
setup_cmd646_bar(d, 1);
pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[0].data);
@@ -347,6 +421,8 @@ static void cmd646_ide_class_init(ObjectClass *klass, void *data)
k->device_id = PCI_DEVICE_ID_CMD_646;
k->revision = 0x07;
k->class_id = PCI_CLASS_STORAGE_IDE;
+ k->config_read = cmd646_pci_config_read;
+ k->config_write = cmd646_pci_config_write;
dc->props = cmd646_ide_properties;
}