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[PATCH 4/6] hw/mips/gt64xxx_pci: Accumulate address space changes
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH 4/6] hw/mips/gt64xxx_pci: Accumulate address space changes |
Date: |
Wed, 4 Jan 2023 14:39:33 +0100 |
Single registers access in ISD can produce multiple changes
in the address spaces. To reduce computational effort,
accumulate these as a single memory transaction.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
hw/mips/gt64xxx_pci.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/hw/mips/gt64xxx_pci.c b/hw/mips/gt64xxx_pci.c
index 19d0d9889f..d84c2b7349 100644
--- a/hw/mips/gt64xxx_pci.c
+++ b/hw/mips/gt64xxx_pci.c
@@ -282,6 +282,8 @@ static void gt64120_isd_mapping(GT64120State *s)
hwaddr start = ((hwaddr)s->regs[GT_ISD] << 21) & 0xFFFE00000ull;
hwaddr length = 0x1000;
+ memory_region_transaction_begin();
+
if (s->ISD_length) {
memory_region_del_subregion(get_system_memory(), &s->ISD_mem);
}
@@ -292,10 +294,14 @@ static void gt64120_isd_mapping(GT64120State *s)
s->ISD_start = start;
s->ISD_length = length;
memory_region_add_subregion(get_system_memory(), s->ISD_start,
&s->ISD_mem);
+
+ memory_region_transaction_commit();
}
static void gt64120_pci_mapping(GT64120State *s)
{
+ memory_region_transaction_begin();
+
/* Update PCI0IO mapping */
if ((s->regs[GT_PCI0IOLD] & 0x7f) <= s->regs[GT_PCI0IOHD]) {
/* Unmap old IO address */
@@ -354,6 +360,8 @@ static void gt64120_pci_mapping(GT64120State *s)
&s->PCI0M1_mem);
}
}
+
+ memory_region_transaction_commit();
}
static int gt64120_post_load(void *opaque, int version_id)
--
2.38.1
- [PATCH 0/6] hw/mips/gt64xxx_pci: Fix endianness swap on big-endian hosts, Philippe Mathieu-Daudé, 2023/01/04
- [PATCH 1/6] hw/pci/pci_host: Trace config accesses on unexisting functions, Philippe Mathieu-Daudé, 2023/01/04
- [PATCH 2/6] hw/mips/malta: Split FPGA LEDs/ASCII display updates, Philippe Mathieu-Daudé, 2023/01/04
- [PATCH 3/6] hw/mips/malta: Trace FPGA LEDs/ASCII display updates, Philippe Mathieu-Daudé, 2023/01/04
- [PATCH 4/6] hw/mips/gt64xxx_pci: Accumulate address space changes,
Philippe Mathieu-Daudé <=
- [PATCH 5/6] hw/mips/gt64xxx_pci: Endian-swap using PCI_HOST_BRIDGE MemoryRegionOps, Philippe Mathieu-Daudé, 2023/01/04
- [PATCH 6/6] tests/avocado: Add tests booting YAMON ROM on MIPS Malta machines, Philippe Mathieu-Daudé, 2023/01/04
- Re: [PATCH 0/6] hw/mips/gt64xxx_pci: Fix endianness swap on big-endian hosts, Richard Henderson, 2023/01/04
- Re: [PATCH 0/6] hw/mips/gt64xxx_pci: Fix endianness swap on big-endian hosts, Philippe Mathieu-Daudé, 2023/01/13