[27/32] hw/pci-host/piix: Define and use the PIIX IRQ Route Control Registers
diff mbox series

Message ID 20191015162705.28087-28-philmd@redhat.com
State New
Headers show
Series
  • hw/i386/pc: Split PIIX3 southbridge from i440FX northbridge
Related show

Commit Message

Philippe Mathieu-Daudé Oct. 15, 2019, 4:27 p.m. UTC
The IRQ Route Control registers definitions belong to the PIIX
chipset. We were only defining the 'A' register. Define the other
B, C and D registers, and use them.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/i386/xen/xen-hvm.c         | 5 +++--
 hw/mips/gt64xxx_pci.c         | 4 ++--
 hw/pci-host/piix.c            | 9 ++++-----
 include/hw/southbridge/piix.h | 6 ++++++
 4 files changed, 15 insertions(+), 9 deletions(-)

Comments

Paul Durrant Oct. 16, 2019, 11:24 a.m. UTC | #1
On Tue, 15 Oct 2019 at 17:34, Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
>
> The IRQ Route Control registers definitions belong to the PIIX
> chipset. We were only defining the 'A' register. Define the other
> B, C and D registers, and use them.
>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Xen change...

Acked-by: Paul Durrant <paul@xen.org>

> ---
>  hw/i386/xen/xen-hvm.c         | 5 +++--
>  hw/mips/gt64xxx_pci.c         | 4 ++--
>  hw/pci-host/piix.c            | 9 ++++-----
>  include/hw/southbridge/piix.h | 6 ++++++
>  4 files changed, 15 insertions(+), 9 deletions(-)
>
> diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
> index 6b5e5bb7f5..4ce2fb9c89 100644
> --- a/hw/i386/xen/xen-hvm.c
> +++ b/hw/i386/xen/xen-hvm.c
> @@ -14,6 +14,7 @@
>  #include "hw/pci/pci.h"
>  #include "hw/pci/pci_host.h"
>  #include "hw/i386/pc.h"
> +#include "hw/southbridge/piix.h"
>  #include "hw/irq.h"
>  #include "hw/hw.h"
>  #include "hw/i386/apic-msidef.h"
> @@ -156,8 +157,8 @@ void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
>              v = 0;
>          }
>          v &= 0xf;
> -        if (((address + i) >= 0x60) && ((address + i) <= 0x63)) {
> -            xen_set_pci_link_route(xen_domid, address + i - 0x60, v);
> +        if (((address + i) >= PIIX_PIRQCA) && ((address + i) <= PIIX_PIRQCD)) {
> +            xen_set_pci_link_route(xen_domid, address + i - PIIX_PIRQCA, v);
>          }
>      }
>  }
> diff --git a/hw/mips/gt64xxx_pci.c b/hw/mips/gt64xxx_pci.c
> index c277398c0d..5cab9c1ee1 100644
> --- a/hw/mips/gt64xxx_pci.c
> +++ b/hw/mips/gt64xxx_pci.c
> @@ -1013,12 +1013,12 @@ static void gt64120_pci_set_irq(void *opaque, int irq_num, int level)
>
>      /* now we change the pic irq level according to the piix irq mappings */
>      /* XXX: optimize */
> -    pic_irq = piix4_dev->config[0x60 + irq_num];
> +    pic_irq = piix4_dev->config[PIIX_PIRQCA + irq_num];
>      if (pic_irq < 16) {
>          /* The pic level is the logical OR of all the PCI irqs mapped to it. */
>          pic_level = 0;
>          for (i = 0; i < 4; i++) {
> -            if (pic_irq == piix4_dev->config[0x60 + i]) {
> +            if (pic_irq == piix4_dev->config[PIIX_PIRQCA + i]) {
>                  pic_level |= pci_irq_levels[i];
>              }
>          }
> diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
> index 3770575c1a..a450fc726e 100644
> --- a/hw/pci-host/piix.c
> +++ b/hw/pci-host/piix.c
> @@ -61,7 +61,6 @@ typedef struct I440FXState {
>  #define PIIX_NUM_PIC_IRQS       16      /* i8259 * 2 */
>  #define PIIX_NUM_PIRQS          4ULL    /* PIRQ[A-D] */
>  #define XEN_PIIX_NUM_PIRQS      128ULL
> -#define PIIX_PIRQC              0x60
>
>  typedef struct PIIX3State {
>      PCIDevice dev;
> @@ -468,7 +467,7 @@ static void piix3_set_irq_level_internal(PIIX3State *piix3, int pirq, int level)
>      int pic_irq;
>      uint64_t mask;
>
> -    pic_irq = piix3->dev.config[PIIX_PIRQC + pirq];
> +    pic_irq = piix3->dev.config[PIIX_PIRQCA + pirq];
>      if (pic_irq >= PIIX_NUM_PIC_IRQS) {
>          return;
>      }
> @@ -482,7 +481,7 @@ static void piix3_set_irq_level(PIIX3State *piix3, int pirq, int level)
>  {
>      int pic_irq;
>
> -    pic_irq = piix3->dev.config[PIIX_PIRQC + pirq];
> +    pic_irq = piix3->dev.config[PIIX_PIRQCA + pirq];
>      if (pic_irq >= PIIX_NUM_PIC_IRQS) {
>          return;
>      }
> @@ -501,7 +500,7 @@ static void piix3_set_irq(void *opaque, int pirq, int level)
>  static PCIINTxRoute piix3_route_intx_pin_to_irq(void *opaque, int pin)
>  {
>      PIIX3State *piix3 = opaque;
> -    int irq = piix3->dev.config[PIIX_PIRQC + pin];
> +    int irq = piix3->dev.config[PIIX_PIRQCA + pin];
>      PCIINTxRoute route;
>
>      if (irq < PIIX_NUM_PIC_IRQS) {
> @@ -530,7 +529,7 @@ static void piix3_write_config(PCIDevice *dev,
>                                 uint32_t address, uint32_t val, int len)
>  {
>      pci_default_write_config(dev, address, val, len);
> -    if (ranges_overlap(address, len, PIIX_PIRQC, 4)) {
> +    if (ranges_overlap(address, len, PIIX_PIRQCA, 4)) {
>          PIIX3State *piix3 = PIIX3_PCI_DEVICE(dev);
>          int pic_irq;
>
> diff --git a/include/hw/southbridge/piix.h b/include/hw/southbridge/piix.h
> index 79ebe0089b..9c92c37a4d 100644
> --- a/include/hw/southbridge/piix.h
> +++ b/include/hw/southbridge/piix.h
> @@ -18,6 +18,12 @@ I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
>                        qemu_irq sci_irq, qemu_irq smi_irq,
>                        int smm_enabled, DeviceState **piix4_pm);
>
> +/* PIRQRC[A:D]: PIRQx Route Control Registers */
> +#define PIIX_PIRQCA 0x60
> +#define PIIX_PIRQCB 0x61
> +#define PIIX_PIRQCC 0x62
> +#define PIIX_PIRQCD 0x63
> +
>  /*
>   * Reset Control Register: PCI-accessible ISA-Compatible Register at address
>   * 0xcf9, provided by the PCI/ISA bridge (PIIX3 PCI function 0, 8086:7000).
> --
> 2.21.0
>

Patch
diff mbox series

diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
index 6b5e5bb7f5..4ce2fb9c89 100644
--- a/hw/i386/xen/xen-hvm.c
+++ b/hw/i386/xen/xen-hvm.c
@@ -14,6 +14,7 @@ 
 #include "hw/pci/pci.h"
 #include "hw/pci/pci_host.h"
 #include "hw/i386/pc.h"
+#include "hw/southbridge/piix.h"
 #include "hw/irq.h"
 #include "hw/hw.h"
 #include "hw/i386/apic-msidef.h"
@@ -156,8 +157,8 @@  void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
             v = 0;
         }
         v &= 0xf;
-        if (((address + i) >= 0x60) && ((address + i) <= 0x63)) {
-            xen_set_pci_link_route(xen_domid, address + i - 0x60, v);
+        if (((address + i) >= PIIX_PIRQCA) && ((address + i) <= PIIX_PIRQCD)) {
+            xen_set_pci_link_route(xen_domid, address + i - PIIX_PIRQCA, v);
         }
     }
 }
diff --git a/hw/mips/gt64xxx_pci.c b/hw/mips/gt64xxx_pci.c
index c277398c0d..5cab9c1ee1 100644
--- a/hw/mips/gt64xxx_pci.c
+++ b/hw/mips/gt64xxx_pci.c
@@ -1013,12 +1013,12 @@  static void gt64120_pci_set_irq(void *opaque, int irq_num, int level)
 
     /* now we change the pic irq level according to the piix irq mappings */
     /* XXX: optimize */
-    pic_irq = piix4_dev->config[0x60 + irq_num];
+    pic_irq = piix4_dev->config[PIIX_PIRQCA + irq_num];
     if (pic_irq < 16) {
         /* The pic level is the logical OR of all the PCI irqs mapped to it. */
         pic_level = 0;
         for (i = 0; i < 4; i++) {
-            if (pic_irq == piix4_dev->config[0x60 + i]) {
+            if (pic_irq == piix4_dev->config[PIIX_PIRQCA + i]) {
                 pic_level |= pci_irq_levels[i];
             }
         }
diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
index 3770575c1a..a450fc726e 100644
--- a/hw/pci-host/piix.c
+++ b/hw/pci-host/piix.c
@@ -61,7 +61,6 @@  typedef struct I440FXState {
 #define PIIX_NUM_PIC_IRQS       16      /* i8259 * 2 */
 #define PIIX_NUM_PIRQS          4ULL    /* PIRQ[A-D] */
 #define XEN_PIIX_NUM_PIRQS      128ULL
-#define PIIX_PIRQC              0x60
 
 typedef struct PIIX3State {
     PCIDevice dev;
@@ -468,7 +467,7 @@  static void piix3_set_irq_level_internal(PIIX3State *piix3, int pirq, int level)
     int pic_irq;
     uint64_t mask;
 
-    pic_irq = piix3->dev.config[PIIX_PIRQC + pirq];
+    pic_irq = piix3->dev.config[PIIX_PIRQCA + pirq];
     if (pic_irq >= PIIX_NUM_PIC_IRQS) {
         return;
     }
@@ -482,7 +481,7 @@  static void piix3_set_irq_level(PIIX3State *piix3, int pirq, int level)
 {
     int pic_irq;
 
-    pic_irq = piix3->dev.config[PIIX_PIRQC + pirq];
+    pic_irq = piix3->dev.config[PIIX_PIRQCA + pirq];
     if (pic_irq >= PIIX_NUM_PIC_IRQS) {
         return;
     }
@@ -501,7 +500,7 @@  static void piix3_set_irq(void *opaque, int pirq, int level)
 static PCIINTxRoute piix3_route_intx_pin_to_irq(void *opaque, int pin)
 {
     PIIX3State *piix3 = opaque;
-    int irq = piix3->dev.config[PIIX_PIRQC + pin];
+    int irq = piix3->dev.config[PIIX_PIRQCA + pin];
     PCIINTxRoute route;
 
     if (irq < PIIX_NUM_PIC_IRQS) {
@@ -530,7 +529,7 @@  static void piix3_write_config(PCIDevice *dev,
                                uint32_t address, uint32_t val, int len)
 {
     pci_default_write_config(dev, address, val, len);
-    if (ranges_overlap(address, len, PIIX_PIRQC, 4)) {
+    if (ranges_overlap(address, len, PIIX_PIRQCA, 4)) {
         PIIX3State *piix3 = PIIX3_PCI_DEVICE(dev);
         int pic_irq;
 
diff --git a/include/hw/southbridge/piix.h b/include/hw/southbridge/piix.h
index 79ebe0089b..9c92c37a4d 100644
--- a/include/hw/southbridge/piix.h
+++ b/include/hw/southbridge/piix.h
@@ -18,6 +18,12 @@  I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
                       qemu_irq sci_irq, qemu_irq smi_irq,
                       int smm_enabled, DeviceState **piix4_pm);
 
+/* PIRQRC[A:D]: PIRQx Route Control Registers */
+#define PIIX_PIRQCA 0x60
+#define PIIX_PIRQCB 0x61
+#define PIIX_PIRQCC 0x62
+#define PIIX_PIRQCD 0x63
+
 /*
  * Reset Control Register: PCI-accessible ISA-Compatible Register at address
  * 0xcf9, provided by the PCI/ISA bridge (PIIX3 PCI function 0, 8086:7000).