mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
5fc0df93fc
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAl6BIG4eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGlHUH/RCFve2sfHRPjRW+ xR5SaLVAw6XKvtKBq7yvKmHEwqNJnL79IHyqqtSrtfFr2FfaH/KvYiCbbAezvSrM np0udGu7STKGd21CWuyEZJudyhXkOwMRNiFiCXWp7rs35oh8T0TpJxMzo2Nc1nLk JFQPqAP6OSvq4IkWEywKQI+Au3Z1IBf83xVjZ1s+MKPQHYD49x2hc4cQntL5/cnm a3DoR2iBkYiGZCZ9dDqAqJTnMQIiCbACdZXgGjNRUpdyA/dtAjsMl11NPYHm8TA2 3AHBupAK50WBZGad6xv2qKQyScsmoJG2mv92QjlOFz0Tpiu6rLnDlLYREDVB6YH6 qbLDsc8= =XEIU -----END PGP SIGNATURE----- Merge v5.6 into drm-next msm needed rc6, so I just went and merged release (msm has been in drm-next outside of this tree) Signed-off-by: Dave Airlie <airlied@redhat.com>
301 lines
7.2 KiB
C
301 lines
7.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
*/
|
|
|
|
#include <linux/pci.h>
|
|
|
|
#include <drm/drm_drv.h>
|
|
#include <drm/drm_fourcc.h>
|
|
|
|
#include "bochs.h"
|
|
|
|
/* ---------------------------------------------------------------------- */
|
|
|
|
static void bochs_vga_writeb(struct bochs_device *bochs, u16 ioport, u8 val)
|
|
{
|
|
if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df))
|
|
return;
|
|
|
|
if (bochs->mmio) {
|
|
int offset = ioport - 0x3c0 + 0x400;
|
|
writeb(val, bochs->mmio + offset);
|
|
} else {
|
|
outb(val, ioport);
|
|
}
|
|
}
|
|
|
|
static u16 bochs_dispi_read(struct bochs_device *bochs, u16 reg)
|
|
{
|
|
u16 ret = 0;
|
|
|
|
if (bochs->mmio) {
|
|
int offset = 0x500 + (reg << 1);
|
|
ret = readw(bochs->mmio + offset);
|
|
} else {
|
|
outw(reg, VBE_DISPI_IOPORT_INDEX);
|
|
ret = inw(VBE_DISPI_IOPORT_DATA);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void bochs_dispi_write(struct bochs_device *bochs, u16 reg, u16 val)
|
|
{
|
|
if (bochs->mmio) {
|
|
int offset = 0x500 + (reg << 1);
|
|
writew(val, bochs->mmio + offset);
|
|
} else {
|
|
outw(reg, VBE_DISPI_IOPORT_INDEX);
|
|
outw(val, VBE_DISPI_IOPORT_DATA);
|
|
}
|
|
}
|
|
|
|
static void bochs_hw_set_big_endian(struct bochs_device *bochs)
|
|
{
|
|
if (bochs->qext_size < 8)
|
|
return;
|
|
|
|
writel(0xbebebebe, bochs->mmio + 0x604);
|
|
}
|
|
|
|
static void bochs_hw_set_little_endian(struct bochs_device *bochs)
|
|
{
|
|
if (bochs->qext_size < 8)
|
|
return;
|
|
|
|
writel(0x1e1e1e1e, bochs->mmio + 0x604);
|
|
}
|
|
|
|
#ifdef __BIG_ENDIAN
|
|
#define bochs_hw_set_native_endian(_b) bochs_hw_set_big_endian(_b)
|
|
#else
|
|
#define bochs_hw_set_native_endian(_b) bochs_hw_set_little_endian(_b)
|
|
#endif
|
|
|
|
static int bochs_get_edid_block(void *data, u8 *buf,
|
|
unsigned int block, size_t len)
|
|
{
|
|
struct bochs_device *bochs = data;
|
|
size_t i, start = block * EDID_LENGTH;
|
|
|
|
if (start + len > 0x400 /* vga register offset */)
|
|
return -1;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
buf[i] = readb(bochs->mmio + start + i);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int bochs_hw_load_edid(struct bochs_device *bochs)
|
|
{
|
|
u8 header[8];
|
|
|
|
if (!bochs->mmio)
|
|
return -1;
|
|
|
|
/* check header to detect whenever edid support is enabled in qemu */
|
|
bochs_get_edid_block(bochs, header, 0, ARRAY_SIZE(header));
|
|
if (drm_edid_header_is_valid(header) != 8)
|
|
return -1;
|
|
|
|
kfree(bochs->edid);
|
|
bochs->edid = drm_do_get_edid(&bochs->connector,
|
|
bochs_get_edid_block, bochs);
|
|
if (bochs->edid == NULL)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bochs_hw_init(struct drm_device *dev)
|
|
{
|
|
struct bochs_device *bochs = dev->dev_private;
|
|
struct pci_dev *pdev = dev->pdev;
|
|
unsigned long addr, size, mem, ioaddr, iosize;
|
|
u16 id;
|
|
|
|
if (pdev->resource[2].flags & IORESOURCE_MEM) {
|
|
/* mmio bar with vga and bochs registers present */
|
|
if (pci_request_region(pdev, 2, "bochs-drm") != 0) {
|
|
DRM_ERROR("Cannot request mmio region\n");
|
|
return -EBUSY;
|
|
}
|
|
ioaddr = pci_resource_start(pdev, 2);
|
|
iosize = pci_resource_len(pdev, 2);
|
|
bochs->mmio = ioremap(ioaddr, iosize);
|
|
if (bochs->mmio == NULL) {
|
|
DRM_ERROR("Cannot map mmio region\n");
|
|
return -ENOMEM;
|
|
}
|
|
} else {
|
|
ioaddr = VBE_DISPI_IOPORT_INDEX;
|
|
iosize = 2;
|
|
if (!request_region(ioaddr, iosize, "bochs-drm")) {
|
|
DRM_ERROR("Cannot request ioports\n");
|
|
return -EBUSY;
|
|
}
|
|
bochs->ioports = 1;
|
|
}
|
|
|
|
id = bochs_dispi_read(bochs, VBE_DISPI_INDEX_ID);
|
|
mem = bochs_dispi_read(bochs, VBE_DISPI_INDEX_VIDEO_MEMORY_64K)
|
|
* 64 * 1024;
|
|
if ((id & 0xfff0) != VBE_DISPI_ID0) {
|
|
DRM_ERROR("ID mismatch\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if ((pdev->resource[0].flags & IORESOURCE_MEM) == 0)
|
|
return -ENODEV;
|
|
addr = pci_resource_start(pdev, 0);
|
|
size = pci_resource_len(pdev, 0);
|
|
if (addr == 0)
|
|
return -ENODEV;
|
|
if (size != mem) {
|
|
DRM_ERROR("Size mismatch: pci=%ld, bochs=%ld\n",
|
|
size, mem);
|
|
size = min(size, mem);
|
|
}
|
|
|
|
if (pci_request_region(pdev, 0, "bochs-drm") != 0)
|
|
DRM_WARN("Cannot request framebuffer, boot fb still active?\n");
|
|
|
|
bochs->fb_map = ioremap(addr, size);
|
|
if (bochs->fb_map == NULL) {
|
|
DRM_ERROR("Cannot map framebuffer\n");
|
|
return -ENOMEM;
|
|
}
|
|
bochs->fb_base = addr;
|
|
bochs->fb_size = size;
|
|
|
|
DRM_INFO("Found bochs VGA, ID 0x%x.\n", id);
|
|
DRM_INFO("Framebuffer size %ld kB @ 0x%lx, %s @ 0x%lx.\n",
|
|
size / 1024, addr,
|
|
bochs->ioports ? "ioports" : "mmio",
|
|
ioaddr);
|
|
|
|
if (bochs->mmio && pdev->revision >= 2) {
|
|
bochs->qext_size = readl(bochs->mmio + 0x600);
|
|
if (bochs->qext_size < 4 || bochs->qext_size > iosize) {
|
|
bochs->qext_size = 0;
|
|
goto noext;
|
|
}
|
|
DRM_DEBUG("Found qemu ext regs, size %ld\n",
|
|
bochs->qext_size);
|
|
bochs_hw_set_native_endian(bochs);
|
|
}
|
|
|
|
noext:
|
|
return 0;
|
|
}
|
|
|
|
void bochs_hw_fini(struct drm_device *dev)
|
|
{
|
|
struct bochs_device *bochs = dev->dev_private;
|
|
|
|
/* TODO: shot down existing vram mappings */
|
|
|
|
if (bochs->mmio)
|
|
iounmap(bochs->mmio);
|
|
if (bochs->ioports)
|
|
release_region(VBE_DISPI_IOPORT_INDEX, 2);
|
|
if (bochs->fb_map)
|
|
iounmap(bochs->fb_map);
|
|
pci_release_regions(dev->pdev);
|
|
kfree(bochs->edid);
|
|
}
|
|
|
|
void bochs_hw_setmode(struct bochs_device *bochs,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
int idx;
|
|
|
|
if (!drm_dev_enter(bochs->dev, &idx))
|
|
return;
|
|
|
|
bochs->xres = mode->hdisplay;
|
|
bochs->yres = mode->vdisplay;
|
|
bochs->bpp = 32;
|
|
bochs->stride = mode->hdisplay * (bochs->bpp / 8);
|
|
bochs->yres_virtual = bochs->fb_size / bochs->stride;
|
|
|
|
DRM_DEBUG_DRIVER("%dx%d @ %d bpp, vy %d\n",
|
|
bochs->xres, bochs->yres, bochs->bpp,
|
|
bochs->yres_virtual);
|
|
|
|
bochs_vga_writeb(bochs, 0x3c0, 0x20); /* unblank */
|
|
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, 0);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_BPP, bochs->bpp);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_XRES, bochs->xres);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_YRES, bochs->yres);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_BANK, 0);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, bochs->xres);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_HEIGHT,
|
|
bochs->yres_virtual);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, 0);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, 0);
|
|
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE,
|
|
VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED);
|
|
|
|
drm_dev_exit(idx);
|
|
}
|
|
|
|
void bochs_hw_setformat(struct bochs_device *bochs,
|
|
const struct drm_format_info *format)
|
|
{
|
|
int idx;
|
|
|
|
if (!drm_dev_enter(bochs->dev, &idx))
|
|
return;
|
|
|
|
DRM_DEBUG_DRIVER("format %c%c%c%c\n",
|
|
(format->format >> 0) & 0xff,
|
|
(format->format >> 8) & 0xff,
|
|
(format->format >> 16) & 0xff,
|
|
(format->format >> 24) & 0xff);
|
|
|
|
switch (format->format) {
|
|
case DRM_FORMAT_XRGB8888:
|
|
bochs_hw_set_little_endian(bochs);
|
|
break;
|
|
case DRM_FORMAT_BGRX8888:
|
|
bochs_hw_set_big_endian(bochs);
|
|
break;
|
|
default:
|
|
/* should not happen */
|
|
DRM_ERROR("%s: Huh? Got framebuffer format 0x%x",
|
|
__func__, format->format);
|
|
break;
|
|
}
|
|
|
|
drm_dev_exit(idx);
|
|
}
|
|
|
|
void bochs_hw_setbase(struct bochs_device *bochs,
|
|
int x, int y, int stride, u64 addr)
|
|
{
|
|
unsigned long offset;
|
|
unsigned int vx, vy, vwidth, idx;
|
|
|
|
if (!drm_dev_enter(bochs->dev, &idx))
|
|
return;
|
|
|
|
bochs->stride = stride;
|
|
offset = (unsigned long)addr +
|
|
y * bochs->stride +
|
|
x * (bochs->bpp / 8);
|
|
vy = offset / bochs->stride;
|
|
vx = (offset % bochs->stride) * 8 / bochs->bpp;
|
|
vwidth = stride * 8 / bochs->bpp;
|
|
|
|
DRM_DEBUG_DRIVER("x %d, y %d, addr %llx -> offset %lx, vx %d, vy %d\n",
|
|
x, y, addr, offset, vx, vy);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_VIRT_WIDTH, vwidth);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_X_OFFSET, vx);
|
|
bochs_dispi_write(bochs, VBE_DISPI_INDEX_Y_OFFSET, vy);
|
|
|
|
drm_dev_exit(idx);
|
|
}
|