motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 07:43:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

libqos: Add 64-bit PCI IO accessors

Browse source 
Currently the libqos PCI layer includes accessor helpers for 8, 16 and 32
bit reads and writes.  It's likely that we'll want 64-bit accesses in the
future (plenty of modern peripherals will have 64-bit reigsters).  This
adds them.

For PIO (not MMIO) accesses on the PC backend, this is implemented as two
32-bit ins or outs.  That's not ideal but AFAICT x86 doesn't have 64-bit
versions of in and out.

This patch also converts the single current user of 64-bit accesses -
virtio-pci.c to use the new mechanism, rather than a sequence of 8 byte
reads.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
This commit is contained in:
David Gibson 2016-10-19 15:00:21 +11:00
parent 9c268f8ae8
commit f775f45ab8
5 changed files with 60 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

4
tests/libqos/pci.h
View file

@ -26,10 +26,12 @@ struct QPCIBus {
uint8_t (*pio_readb)(QPCIBus *bus, uint32_t addr);
uint16_t (*pio_readw)(QPCIBus *bus, uint32_t addr);
uint32_t (*pio_readl)(QPCIBus *bus, uint32_t addr);
uint64_t (*pio_readq)(QPCIBus *bus, uint32_t addr);
void (*pio_writeb)(QPCIBus *bus, uint32_t addr, uint8_t value);
void (*pio_writew)(QPCIBus *bus, uint32_t addr, uint16_t value);
void (*pio_writel)(QPCIBus *bus, uint32_t addr, uint32_t value);
void (*pio_writeq)(QPCIBus *bus, uint32_t addr, uint64_t value);
void (*memread)(QPCIBus *bus, uint32_t addr, void *buf, size_t len);
void (*memwrite)(QPCIBus *bus, uint32_t addr, const void *buf, size_t len);
@ -82,10 +84,12 @@ void qpci_config_writel(QPCIDevice *dev, uint8_t offset, uint32_t value);
uint8_t qpci_io_readb(QPCIDevice *dev, void *data);
uint16_t qpci_io_readw(QPCIDevice *dev, void *data);
uint32_t qpci_io_readl(QPCIDevice *dev, void *data);
uint64_t qpci_io_readq(QPCIDevice *dev, void *data);
void qpci_io_writeb(QPCIDevice *dev, void *data, uint8_t value);
void qpci_io_writew(QPCIDevice *dev, void *data, uint16_t value);
void qpci_io_writel(QPCIDevice *dev, void *data, uint32_t value);
void qpci_io_writeq(QPCIDevice *dev, void *data, uint64_t value);
void qpci_memread(QPCIDevice *bus, void *data, void *buf, size_t len);
void qpci_memwrite(QPCIDevice *bus, void *data, const void *buf, size_t len);