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Allow the PCI config address register to be read. The Linux

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kernel does this. Also remove an unused header file.

Submitted by:	tycho nightingale at pluribusnetworks com
Reviewed by:	neel
This commit is contained in:
Peter Grehan 2013-06-28 05:01:25 +00:00
parent 5f51836645
commit 7554303627
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=252331
1 changed files with 21 additions and 11 deletions
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32
usr.sbin/bhyve/pci_emul.c
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@ -47,13 +47,14 @@ __FBSDID("$FreeBSD$");
#include "bhyverun.h"
#include "inout.h"
#include "mem.h"
#include "mptbl.h"
#include "pci_emul.h"
#include "ioapic.h"
#define CONF1_ADDR_PORT 0x0cf8
#define CONF1_DATA_PORT 0x0cfc
#define CONF1_ENABLE 0x80000000ul
#define CFGWRITE(pi,off,val,b) \
do { \
if ((b) == 1) { \
@ -1224,20 +1225,29 @@ pci_emul_cfgaddr(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
{
uint32_t x;
assert(!in);
if (bytes != 4) {
if (in)
*eax = (bytes == 2) ? 0xffff : 0xff;
return (0);
}
if (bytes != 4)
return (-1);
x = *eax;
cfgoff = x & PCI_REGMAX;
cfgfunc = (x >> 8) & PCI_FUNCMAX;
cfgslot = (x >> 11) & PCI_SLOTMAX;
cfgbus = (x >> 16) & PCI_BUSMAX;
if (in) {
x = (cfgbus << 16) |
(cfgslot << 11) |
(cfgfunc << 8) |
cfgoff;
*eax = x | CONF1_ENABLE;
} else {
x = *eax;
cfgoff = x & PCI_REGMAX;
cfgfunc = (x >> 8) & PCI_FUNCMAX;
cfgslot = (x >> 11) & PCI_SLOTMAX;
cfgbus = (x >> 16) & PCI_BUSMAX;
}
return (0);
}
INOUT_PORT(pci_cfgaddr, CONF1_ADDR_PORT, IOPORT_F_OUT, pci_emul_cfgaddr);
INOUT_PORT(pci_cfgaddr, CONF1_ADDR_PORT, IOPORT_F_INOUT, pci_emul_cfgaddr);
static uint32_t
bits_changed(uint32_t old, uint32_t new, uint32_t mask)