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bhyve: remove a hack to map all 8G BARs 1:1

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Suggested and reviewed by:	grehan
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D27186
This commit is contained in:
Konstantin Belousov 2020-11-12 02:52:01 +00:00
parent 0b8e170d95
commit 038f5c7bfe
3 changed files with 4 additions and 20 deletions
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18
usr.sbin/bhyve/pci_emul.c
View File

@ -454,14 +454,6 @@ pci_emul_alloc_resource(uint64_t *baseptr, uint64_t limit, uint64_t size,
return (-1);
}
int
pci_emul_alloc_bar(struct pci_devinst *pdi, int idx, enum pcibar_type type,
uint64_t size)
{
return (pci_emul_alloc_pbar(pdi, idx, 0, type, size));
}
/*
* Register (or unregister) the MMIO or I/O region associated with the BAR
* register 'idx' of an emulated pci device.
@ -586,8 +578,8 @@ update_bar_address(struct pci_devinst *pi, uint64_t addr, int idx, int type)
}
int
pci_emul_alloc_pbar(struct pci_devinst *pdi, int idx, uint64_t hostbase,
enum pcibar_type type, uint64_t size)
pci_emul_alloc_bar(struct pci_devinst *pdi, int idx, enum pcibar_type type,
uint64_t size)
{
int error;
uint64_t *baseptr, limit, addr, mask, lobits, bar;
@ -628,12 +620,6 @@ pci_emul_alloc_pbar(struct pci_devinst *pdi, int idx, uint64_t hostbase,
* number (128MB currently).
*/
if (size > 128 * 1024 * 1024) {
/*
* XXX special case for device requiring peer-peer DMA
*/
if (size == 0x100000000UL)
baseptr = &hostbase;
else
baseptr = &pci_emul_membase64;
limit = pci_emul_memlim64;
mask = PCIM_BAR_MEM_BASE;

2
usr.sbin/bhyve/pci_emul.h
View File

@ -221,8 +221,6 @@ int init_pci(struct vmctx *ctx);
void pci_callback(void);
int pci_emul_alloc_bar(struct pci_devinst *pdi, int idx,
enum pcibar_type type, uint64_t size);
int pci_emul_alloc_pbar(struct pci_devinst *pdi, int idx,
uint64_t hostbase, enum pcibar_type type, uint64_t size);
int pci_emul_add_msicap(struct pci_devinst *pi, int msgnum);
int pci_emul_add_pciecap(struct pci_devinst *pi, int pcie_device_type);
void pci_emul_capwrite(struct pci_devinst *pi, int offset, int bytes,

2
usr.sbin/bhyve/pci_passthru.c
View File

@ -583,7 +583,7 @@ cfginitbar(struct vmctx *ctx, struct passthru_softc *sc)
sc->psc_bar[i].addr = base;
/* Allocate the BAR in the guest I/O or MMIO space */
error = pci_emul_alloc_pbar(pi, i, base, bartype, size);
error = pci_emul_alloc_bar(pi, i, bartype, size);
if (error)
return (-1);