isa: implement isa_is_ioport_assigned via memory_region_find

Open-code isa_is_ioport_assigned via a memory region lookup. As all IO
ports are now directly or indirectly registered via the memory API, this
becomes possible and will finally allow us to drop the ioport tables.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
index 756df3bee2d811874818e6ca34f1ab222731caa9..ff559c0a4a146fc2716136b64901bd9b8d870d79 100644 (file)
--- a/hw/acpi/piix4.c
+++ b/hw/acpi/piix4.c
@@ -383,14 +383,15 @@ static void piix4_pm_powerdown_req(Notifier *n, void *opaque)
 static void piix4_pm_machine_ready(Notifier *n, void *opaque)
 {
     PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready);
+    MemoryRegion *io_as = pci_address_space_io(&s->dev);
     uint8_t *pci_conf;
 
     pci_conf = s->dev.config;
-    pci_conf[0x5f] = (isa_is_ioport_assigned(0x378) ? 0x80 : 0) | 0x10;
+    pci_conf[0x5f] = 0x10 |
+        (memory_region_find(io_as, 0x378, 1).mr ? 0x80 : 0);
     pci_conf[0x63] = 0x60;
-    pci_conf[0x67] = (isa_is_ioport_assigned(0x3f8) ? 0x08 : 0) |
-       (isa_is_ioport_assigned(0x2f8) ? 0x90 : 0);
-
+    pci_conf[0x67] = (memory_region_find(io_as, 0x3f8, 1).mr ? 0x08 : 0) |
+        (memory_region_find(io_as, 0x2f8, 1).mr ? 0x90 : 0);
 }
 
 static int piix4_pm_initfn(PCIDevice *dev)

diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
index 667e8829629dd33d6f6b0341933596a62ea7e44c..461ab7caf3df033daf9a14c4ff38b362590191ea 100644 (file)
--- a/hw/isa/lpc_ich9.c
+++ b/hw/isa/lpc_ich9.c
@@ -477,22 +477,23 @@ static const MemoryRegionOps rbca_mmio_ops = {
 static void ich9_lpc_machine_ready(Notifier *n, void *opaque)
 {
     ICH9LPCState *s = container_of(n, ICH9LPCState, machine_ready);
+    MemoryRegion *io_as = pci_address_space_io(&s->d);
     uint8_t *pci_conf;
 
     pci_conf = s->d.config;
-    if (isa_is_ioport_assigned(0x3f8)) {
+    if (memory_region_find(io_as, 0x3f8, 1).mr) {
         /* com1 */
         pci_conf[0x82] |= 0x01;
     }
-    if (isa_is_ioport_assigned(0x2f8)) {
+    if (memory_region_find(io_as, 0x2f8, 1).mr) {
         /* com2 */
         pci_conf[0x82] |= 0x02;
     }
-    if (isa_is_ioport_assigned(0x378)) {
+    if (memory_region_find(io_as, 0x378, 1).mr) {
         /* lpt */
         pci_conf[0x82] |= 0x04;
     }
-    if (isa_is_ioport_assigned(0x3f0)) {
+    if (memory_region_find(io_as, 0x3f0, 1).mr) {
         /* floppy */
         pci_conf[0x82] |= 0x08;
     }

diff --git a/include/exec/ioport.h b/include/exec/ioport.h
index 4953892c16fe3ba140ed98c5ce83a1f176ab8c4c..eb99ffe583b74bf42d9e1401157e4d275976da3b 100644 (file)
--- a/include/exec/ioport.h
+++ b/include/exec/ioport.h
@@ -40,7 +40,6 @@ typedef void (IOPortDestructor)(void *opaque);
 
 void ioport_register(IORange *iorange);
 void isa_unassign_ioport(pio_addr_t start, int length);
-bool isa_is_ioport_assigned(pio_addr_t start);
 
 void cpu_outb(pio_addr_t addr, uint8_t val);
 void cpu_outw(pio_addr_t addr, uint16_t val);

diff --git a/ioport.c b/ioport.c
index d5b7fbdb5b8a549f91ee6fc2c53efd7d6cf13f01..56470c5ec304af9d6e4159552e8ebe4f1161619b 100644 (file)
--- a/ioport.c
+++ b/ioport.c
@@ -273,13 +273,6 @@ void isa_unassign_ioport(pio_addr_t start, int length)
     }
 }
 
-bool isa_is_ioport_assigned(pio_addr_t start)
-{
-    return (ioport_read_table[0][start] || ioport_write_table[0][start] ||
-           ioport_read_table[1][start] || ioport_write_table[1][start] ||
-           ioport_read_table[2][start] || ioport_write_table[2][start]);
-}
-
 /***********************************************************/
 
 void cpu_outb(pio_addr_t addr, uint8_t val)