ide/via: Implement and use native PCI IDE mode

This device only implemented ISA compatibility mode and native PCI IDE
mode was missing but no clients actually need ISA mode but to the
contrary, they usually want to switch to and use device in native
PCI IDE mode. Therefore implement native PCI mode and switch default
to that.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-id: c323f08c59b9931310c5d92503d370f77ce3a557.1548160772.git.balaton@eik.bme.hu
Signed-off-by: John Snow <jsnow@redhat.com>

diff --git a/hw/ide/via.c b/hw/ide/via.c
index c6e43a88129b69ff71759c718dc814713ead83ce..ac9385228ce009ba6f50beebe2c54c4bf024650d 100644 (file)
--- a/hw/ide/via.c
+++ b/hw/ide/via.c
@@ -32,15 +32,6 @@
 #include "hw/ide/pci.h"
 #include "trace.h"
 
-static const struct {
-    int iobase;
-    int iobase2;
-    int isairq;
-} port_info[] = {
-    {0x1f0, 0x3f6, 14},
-    {0x170, 0x376, 15},
-};
-
 static uint64_t bmdma_read(void *opaque, hwaddr addr,
                            unsigned size)
 {
@@ -110,6 +101,23 @@ static void bmdma_setup_bar(PCIIDEState *d)
     }
 }
 
+static void via_ide_set_irq(void *opaque, int n, int level)
+{
+    PCIDevice *d = PCI_DEVICE(opaque);
+
+    if (level) {
+        d->config[0x70 + n * 8] |= 0x80;
+    } else {
+        d->config[0x70 + n * 8] &= ~0x80;
+    }
+
+    level = (d->config[0x70] & 0x80) || (d->config[0x78] & 0x80);
+    n = pci_get_byte(d->config + PCI_INTERRUPT_LINE);
+    if (n) {
+        qemu_set_irq(isa_get_irq(NULL, n), level);
+    }
+}
+
 static void via_ide_reset(void *opaque)
 {
     PCIIDEState *d = opaque;
@@ -121,7 +129,7 @@ static void via_ide_reset(void *opaque)
         ide_bus_reset(&d->bus[i]);
     }
 
-    pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_WAIT);
+    pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_WAIT);
     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |
                  PCI_STATUS_DEVSEL_MEDIUM);
 
@@ -158,10 +166,28 @@ static void via_ide_realize(PCIDevice *dev, Error **errp)
     uint8_t *pci_conf = dev->config;
     int i;
 
-    pci_config_set_prog_interface(pci_conf, 0x8a); /* legacy ATA mode */
+    pci_config_set_prog_interface(pci_conf, 0x8f); /* native PCI ATA mode */
     pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
+    dev->wmask[PCI_INTERRUPT_LINE] = 0xf;
 
     qemu_register_reset(via_ide_reset, d);
+
+    memory_region_init_io(&d->data_bar[0], OBJECT(d), &pci_ide_data_le_ops,
+                          &d->bus[0], "via-ide0-data", 8);
+    pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->data_bar[0]);
+
+    memory_region_init_io(&d->cmd_bar[0], OBJECT(d), &pci_ide_cmd_le_ops,
+                          &d->bus[0], "via-ide0-cmd", 4);
+    pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd_bar[0]);
+
+    memory_region_init_io(&d->data_bar[1], OBJECT(d), &pci_ide_data_le_ops,
+                          &d->bus[1], "via-ide1-data", 8);
+    pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_IO, &d->data_bar[1]);
+
+    memory_region_init_io(&d->cmd_bar[1], OBJECT(d), &pci_ide_cmd_le_ops,
+                          &d->bus[1], "via-ide1-cmd", 4);
+    pci_register_bar(dev, 3, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd_bar[1]);
+
     bmdma_setup_bar(d);
     pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
 
@@ -169,9 +195,7 @@ static void via_ide_realize(PCIDevice *dev, Error **errp)
 
     for (i = 0; i < 2; i++) {
         ide_bus_new(&d->bus[i], sizeof(d->bus[i]), DEVICE(d), i, 2);
-        ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase,
-                        port_info[i].iobase2);
-        ide_init2(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq));
+        ide_init2(&d->bus[i], qemu_allocate_irq(via_ide_set_irq, d, i));
 
         bmdma_init(&d->bus[i], &d->bmdma[i], d);
         d->bmdma[i].bus = &d->bus[i];