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Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value inst
From: |
Tristan Gingold |
Subject: |
Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int. |
Date: |
Fri, 10 Jul 2009 15:28:03 +0200 |
On Jul 10, 2009, at 3:16 PM, Anthony Liguori wrote:
Tristan Gingold wrote:
Yes.
Port IO is done through usual memory access, but either the
processor or the north-bridge can recognize this
address and convert the memory access to a port access. After all
PCI cards knows about IO vs Memory.
So would we actually model this in QEMU through cpu_in/out?
Yes, as the cpu can generate port IO cycles for them.
Can PCI IO regions that are marked as PIO actually be > 16-bit in
size?
yes: pci 2.2 6.2.5.1 allows this explicitely.
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., (continued)
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Stuart Brady, 2009/07/02
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Anthony Liguori, 2009/07/09
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Samuel Thibault, 2009/07/10
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Isaku Yamahata, 2009/07/10
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Samuel Thibault, 2009/07/10
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Tristan Gingold, 2009/07/10
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Anthony Liguori, 2009/07/10
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Tristan Gingold, 2009/07/10
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Anthony Liguori, 2009/07/10
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int.,
Tristan Gingold <=
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Anthony Liguori, 2009/07/10
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Isaku Yamahata, 2009/07/12
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Anthony Liguori, 2009/07/13
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Stuart Brady, 2009/07/13
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Anthony Liguori, 2009/07/13
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Isaku Yamahata, 2009/07/13
- Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int., Anthony Liguori, 2009/07/10
[Qemu-devel] [PATCH 0/6] ioport related clean ups, Isaku Yamahata, 2009/07/03