Differential D27456 Diff 86487 usr.sbin/bhyve/pci_fbuf.c

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usr.sbin/bhyve/pci_fbuf.c

Show First 20 Lines • Show All 210 Lines • ▼ Show 20 Lines	pci_fbuf_read(struct vmctx ctx, int vcpu, struct pci_devinst pi,

DPRINTF(DEBUG_VERBOSE,		DPRINTF(DEBUG_VERBOSE,
("fbuf rd: offset 0x%lx, size: %d, value: 0x%lx",		("fbuf rd: offset 0x%lx, size: %d, value: 0x%lx",
offset, size, value));		offset, size, value));

return (value);		return (value);
}		}

static void		static int
pci_fbuf_baraddr(struct vmctx ctx, struct pci_devinst pi, int baridx,		pci_fbuf_baraddr(struct vmctx ctx, struct pci_devinst pi, int baridx,
int enabled, uint64_t address)		int enabled, uint64_t address)
{		{
struct pci_fbuf_softc *sc;		struct pci_fbuf_softc *sc;
int prot;		int prot;

if (baridx != 1)		if (baridx != 1)
return;		return (-1);

sc = pi->pi_arg;		sc = pi->pi_arg;
if (!enabled && sc->fbaddr != 0) {		if (!enabled && sc->fbaddr != 0) {
if (vm_munmap_memseg(ctx, sc->fbaddr, FB_SIZE) != 0)		if (vm_munmap_memseg(ctx, sc->fbaddr, FB_SIZE) != 0)
EPRINTLN("pci_fbuf: munmap_memseg failed");		EPRINTLN("pci_fbuf: munmap_memseg failed");
sc->fbaddr = 0;		sc->fbaddr = 0;
} else if (sc->fb_base != NULL && sc->fbaddr == 0) {		} else if (sc->fb_base != NULL && sc->fbaddr == 0) {
prot = PROT_READ \| PROT_WRITE;		prot = PROT_READ \| PROT_WRITE;
if (vm_mmap_memseg(ctx, address, VM_FRAMEBUFFER, 0, FB_SIZE, prot) != 0)		if (vm_mmap_memseg(ctx, address, VM_FRAMEBUFFER, 0, FB_SIZE, prot) != 0)
EPRINTLN("pci_fbuf: mmap_memseg failed");		EPRINTLN("pci_fbuf: mmap_memseg failed");
sc->fbaddr = address;		sc->fbaddr = address;
}		}

		return (0);
}		}


static int		static int
pci_fbuf_parse_config(struct pci_fbuf_softc sc, nvlist_t nvl)		pci_fbuf_parse_config(struct pci_fbuf_softc sc, nvlist_t nvl)
{		{
const char *value;		const char *value;
char *cp;		char *cp;
▲ Show 20 Lines • Show All 122 Lines • ▼ Show 20 Lines	pci_fbuf_render(struct bhyvegc gc, void arg)
}		}

return;		return;
}		}

static int		static int
pci_fbuf_init(struct vmctx ctx, struct pci_devinst pi, nvlist_t *nvl)		pci_fbuf_init(struct vmctx ctx, struct pci_devinst pi, nvlist_t *nvl)
{		{
int error, prot;		int error;
struct pci_fbuf_softc *sc;		struct pci_fbuf_softc *sc;

if (fbuf_sc != NULL) {		if (fbuf_sc != NULL) {
EPRINTLN("Only one frame buffer device is allowed.");		EPRINTLN("Only one frame buffer device is allowed.");
return (-1);		return (-1);
}		}

sc = calloc(1, sizeof(struct pci_fbuf_softc));		sc = calloc(1, sizeof(struct pci_fbuf_softc));

pi->pi_arg = sc;		pi->pi_arg = sc;

/* initialize config space */		/* initialize config space */
pci_set_cfgdata16(pi, PCIR_DEVICE, 0x40FB);		pci_set_cfgdata16(pi, PCIR_DEVICE, 0x40FB);
pci_set_cfgdata16(pi, PCIR_VENDOR, 0xFB5D);		pci_set_cfgdata16(pi, PCIR_VENDOR, 0xFB5D);
pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_DISPLAY);		pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_DISPLAY);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_DISPLAY_VGA);		pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_DISPLAY_VGA);

		sc->fb_base = vm_create_devmem(
		ctx, VM_FRAMEBUFFER, "framebuffer", FB_SIZE);
		if (sc->fb_base == MAP_FAILED) {
		error = -1;
		goto done;
		}

error = pci_emul_alloc_bar(pi, 0, PCIBAR_MEM32, DMEMSZ);		error = pci_emul_alloc_bar(pi, 0, PCIBAR_MEM32, DMEMSZ);
assert(error == 0);		assert(error == 0);

error = pci_emul_alloc_bar(pi, 1, PCIBAR_MEM32, FB_SIZE);		error = pci_emul_alloc_bar(pi, 1, PCIBAR_MEM32, FB_SIZE);
assert(error == 0);		assert(error == 0);

error = pci_emul_add_msicap(pi, PCI_FBUF_MSI_MSGS);		error = pci_emul_add_msicap(pi, PCI_FBUF_MSI_MSGS);
assert(error == 0);		assert(error == 0);

sc->fbaddr = pi->pi_bar[1].addr;
sc->memregs.fbsize = FB_SIZE;		sc->memregs.fbsize = FB_SIZE;
sc->memregs.width = COLS_DEFAULT;		sc->memregs.width = COLS_DEFAULT;
sc->memregs.height = ROWS_DEFAULT;		sc->memregs.height = ROWS_DEFAULT;
sc->memregs.depth = 32;		sc->memregs.depth = 32;

sc->vga_enabled = 1;		sc->vga_enabled = 1;
sc->vga_full = 0;		sc->vga_full = 0;

sc->fsc_pi = pi;		sc->fsc_pi = pi;

error = pci_fbuf_parse_config(sc, nvl);		error = pci_fbuf_parse_config(sc, nvl);
if (error != 0)		if (error != 0)
goto done;		goto done;

/* XXX until VGA rendering is enabled */		/* XXX until VGA rendering is enabled */
if (sc->vga_full != 0) {		if (sc->vga_full != 0) {
EPRINTLN("pci_fbuf: VGA rendering not enabled");		EPRINTLN("pci_fbuf: VGA rendering not enabled");
goto done;		goto done;
}		}

sc->fb_base = vm_create_devmem(ctx, VM_FRAMEBUFFER, "framebuffer", FB_SIZE);
if (sc->fb_base == MAP_FAILED) {
error = -1;
goto done;
}
DPRINTF(DEBUG_INFO, ("fbuf frame buffer base: %p [sz %lu]",		DPRINTF(DEBUG_INFO, ("fbuf frame buffer base: %p [sz %lu]",
sc->fb_base, FB_SIZE));		sc->fb_base, FB_SIZE));

/*
* Map the framebuffer into the guest address space.
* XXX This may fail if the BAR is different than a prior
* run. In this case flag the error. This will be fixed
* when a change_memseg api is available.
*/
prot = PROT_READ \| PROT_WRITE;
if (vm_mmap_memseg(ctx, sc->fbaddr, VM_FRAMEBUFFER, 0, FB_SIZE, prot) != 0) {
EPRINTLN("pci_fbuf: mapseg failed - try deleting VM and restarting");
error = -1;
goto done;
}

console_init(sc->memregs.width, sc->memregs.height, sc->fb_base);		console_init(sc->memregs.width, sc->memregs.height, sc->fb_base);
console_fb_register(pci_fbuf_render, sc);		console_fb_register(pci_fbuf_render, sc);

if (sc->vga_enabled)		if (sc->vga_enabled)
sc->vgasc = vga_init(!sc->vga_full);		sc->vgasc = vga_init(!sc->vga_full);
sc->gc_image = console_get_image();		sc->gc_image = console_get_image();

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