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From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
	"Mark Cave-Ayland" <mark.cave-ayland@ilande.co.uk>,
	"Helge Deller" <deller@gmx.de>,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>
Subject: [PATCH v2 2/7] hw/pci-host/astro: Re-use generic pci_host_data_le_ops MemoryRegionOps
Date: Mon, 27 Oct 2025 17:52:58 +0100	[thread overview]
Message-ID: <20251027165304.98296-3-philmd@linaro.org> (raw)
In-Reply-To: <20251027165304.98296-1-philmd@linaro.org>

Avoid duplicating code, clear the "config-reg-check-high-bit"
property in .instance_init() in order to re-use the generic
pci_host_data_le_ops MemoryRegionOps.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/pci-host/astro.c      | 35 ++++++++---------------------------
 hw/pci-host/trace-events |  2 --
 2 files changed, 8 insertions(+), 29 deletions(-)

diff --git a/hw/pci-host/astro.c b/hw/pci-host/astro.c
index 0bd66ab3de3..72e625c2508 100644
--- a/hw/pci-host/astro.c
+++ b/hw/pci-host/astro.c
@@ -230,32 +230,6 @@ static const MemoryRegionOps elroy_chip_ops = {
 };
 
 
-/* Unlike pci_config_data_le_ops, no check of high bit set in config_reg.  */
-
-static uint64_t elroy_config_data_read(void *opaque, hwaddr addr, unsigned len)
-{
-    uint64_t val;
-
-    PCIHostState *s = opaque;
-    val = pci_data_read(s->bus, s->config_reg | (addr & 3), len);
-    trace_elroy_pci_config_data_read(s->config_reg | (addr & 3), len, val);
-    return val;
-}
-
-static void elroy_config_data_write(void *opaque, hwaddr addr,
-                                   uint64_t val, unsigned len)
-{
-    PCIHostState *s = opaque;
-    pci_data_write(s->bus, s->config_reg | (addr & 3), val, len);
-    trace_elroy_pci_config_data_write(s->config_reg | (addr & 3), len, val);
-}
-
-static const MemoryRegionOps elroy_config_data_ops = {
-    .read = elroy_config_data_read,
-    .write = elroy_config_data_write,
-    .endianness = DEVICE_LITTLE_ENDIAN,
-};
-
 static uint64_t elroy_config_addr_read(void *opaque, hwaddr addr, unsigned len)
 {
     ElroyState *s = opaque;
@@ -424,6 +398,12 @@ static void elroy_reset(DeviceState *dev)
     }
 }
 
+static void elroy_pcihost_instance_init(Object *obj)
+{
+    object_property_set_bool(obj, "config-reg-check-high-bit", false,
+                             &error_fatal);
+}
+
 static void elroy_pcihost_realize(DeviceState *dev, Error **errp)
 {
     ElroyState *s = ELROY_PCI_HOST_BRIDGE(dev);
@@ -440,7 +420,7 @@ static void elroy_pcihost_realize(DeviceState *dev, Error **errp)
                           &elroy_config_addr_ops, dev,
                           "pci-conf-idx", 8);
     memory_region_init_io(&phb->data_mem, obj,
-                          &elroy_config_data_ops, dev,
+                          &pci_host_data_le_ops, phb,
                           "pci-conf-data", 8);
     memory_region_add_subregion(&s->this_mem, 0x40,
                                 &phb->conf_mem);
@@ -497,6 +477,7 @@ static const TypeInfo elroy_pcihost_info = {
     .name          = TYPE_ELROY_PCI_HOST_BRIDGE,
     .parent        = TYPE_PCI_HOST_BRIDGE,
     .instance_size = sizeof(ElroyState),
+    .instance_init = elroy_pcihost_instance_init,
     .class_init    = elroy_pcihost_class_init,
 };
 
diff --git a/hw/pci-host/trace-events b/hw/pci-host/trace-events
index a6fd88c2c46..792ab25729b 100644
--- a/hw/pci-host/trace-events
+++ b/hw/pci-host/trace-events
@@ -76,7 +76,5 @@ astro_chip_read(uint64_t addr, int size, uint64_t val) "addr 0x%"PRIx64" size %d
 astro_chip_write(uint64_t addr, int size, uint64_t val) "addr 0x%"PRIx64" size %d val 0x%"PRIx64
 elroy_read(uint64_t addr, int size, uint64_t val) "addr 0x%"PRIx64" size %d val 0x%"PRIx64
 elroy_write(uint64_t addr, int size, uint64_t val) "addr 0x%"PRIx64" size %d val 0x%"PRIx64
-elroy_pci_config_data_read(uint64_t addr, int size, uint64_t val) "addr 0x%"PRIx64" size %d val 0x%"PRIx64
-elroy_pci_config_data_write(uint64_t addr, int size, uint64_t val) "addr 0x%"PRIx64" size %d val 0x%"PRIx64
 iosapic_reg_write(uint64_t reg_select, int size, uint64_t val) "reg_select 0x%"PRIx64" size %d val 0x%"PRIx64
 iosapic_reg_read(uint64_t reg_select, int size, uint64_t val) "reg_select 0x%"PRIx64" size %d val 0x%"PRIx64
-- 
2.51.0



  parent reply	other threads:[~2025-10-27 16:55 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-27 16:52 [PATCH v2 0/7] hw/pci-host: Re-use generic pci_host_data_le_ops MemoryRegionOps Philippe Mathieu-Daudé
2025-10-27 16:52 ` [PATCH v2 1/7] hw/pci/pci_host: Add 'config-reg-check-high-bit' property Philippe Mathieu-Daudé
2025-10-27 17:28   ` Peter Maydell
2025-10-28  7:35     ` Marc-André Lureau
2025-10-27 16:52 ` Philippe Mathieu-Daudé [this message]
2025-10-27 16:52 ` [PATCH v2 3/7] hw/pci-host/dino: Re-use generic pci_host_data_le_ops MemoryRegionOps Philippe Mathieu-Daudé
2025-10-27 16:53 ` [PATCH v2 4/7] hw/pci-host/sabre: Remove pointless OBJECT() cast Philippe Mathieu-Daudé
2025-10-27 16:53 ` [PATCH v2 5/7] hw/pci-host/sabre: Include 'host' in host bridge method names Philippe Mathieu-Daudé
2025-10-27 16:53 ` [PATCH v2 6/7] hw/pci-host/sabre: Re-use generic pci_host_data_le_ops MemoryRegionOps Philippe Mathieu-Daudé
2025-10-27 17:00   ` Philippe Mathieu-Daudé
2025-10-27 16:53 ` [PATCH v2 7/7] hw/pci-host/typhoon: " Philippe Mathieu-Daudé
2025-10-27 16:59   ` Philippe Mathieu-Daudé

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