From 1543e317f1da31b75942316931e8f491a8920811 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 04 Jan 2024 10:08:02 +0000
Subject: [PATCH] disable FB
---
kernel/drivers/gpu/drm/mgag200/mgag200_drv.c | 407 +++++++++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 335 insertions(+), 72 deletions(-)
diff --git a/kernel/drivers/gpu/drm/mgag200/mgag200_drv.c b/kernel/drivers/gpu/drm/mgag200/mgag200_drv.c
index 74cdde2..771b26a 100644
--- a/kernel/drivers/gpu/drm/mgag200/mgag200_drv.c
+++ b/kernel/drivers/gpu/drm/mgag200/mgag200_drv.c
@@ -1,35 +1,326 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2012 Red Hat
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License version 2. See the file COPYING in the main
- * directory of this archive for more details.
*
* Authors: Matthew Garrett
* Dave Airlie
*/
-#include <linux/module.h>
+
#include <linux/console.h>
-#include <drm/drmP.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/vmalloc.h>
+
+#include <drm/drm_drv.h>
+#include <drm/drm_file.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_pciids.h>
#include "mgag200_drv.h"
-#include <drm/drm_pciids.h>
-
-/*
- * This is the generic driver code. This binds the driver to the drm core,
- * which then performs further device association and calls our graphics init
- * functions
- */
int mgag200_modeset = -1;
-
MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
module_param_named(modeset, mgag200_modeset, int, 0400);
-static struct drm_driver driver;
+/*
+ * DRM driver
+ */
-static const struct pci_device_id pciidlist[] = {
- { PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_A },
+DEFINE_DRM_GEM_FOPS(mgag200_driver_fops);
+
+static struct drm_driver mgag200_driver = {
+ .driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET,
+ .fops = &mgag200_driver_fops,
+ .name = DRIVER_NAME,
+ .desc = DRIVER_DESC,
+ .date = DRIVER_DATE,
+ .major = DRIVER_MAJOR,
+ .minor = DRIVER_MINOR,
+ .patchlevel = DRIVER_PATCHLEVEL,
+ .gem_create_object = drm_gem_shmem_create_object_cached,
+ DRM_GEM_SHMEM_DRIVER_OPS,
+};
+
+/*
+ * DRM device
+ */
+
+static bool mgag200_has_sgram(struct mga_device *mdev)
+{
+ struct drm_device *dev = &mdev->base;
+ u32 option;
+ int ret;
+
+ ret = pci_read_config_dword(dev->pdev, PCI_MGA_OPTION, &option);
+ if (drm_WARN(dev, ret, "failed to read PCI config dword: %d\n", ret))
+ return false;
+
+ return !!(option & PCI_MGA_OPTION_HARDPWMSK);
+}
+
+static int mgag200_regs_init(struct mga_device *mdev)
+{
+ struct drm_device *dev = &mdev->base;
+ u32 option, option2;
+ u8 crtcext3;
+
+ switch (mdev->type) {
+ case G200_PCI:
+ case G200_AGP:
+ if (mgag200_has_sgram(mdev))
+ option = 0x4049cd21;
+ else
+ option = 0x40499121;
+ option2 = 0x00008000;
+ break;
+ case G200_SE_A:
+ case G200_SE_B:
+ option = 0x40049120;
+ if (mgag200_has_sgram(mdev))
+ option |= PCI_MGA_OPTION_HARDPWMSK;
+ option2 = 0x00008000;
+ break;
+ case G200_WB:
+ case G200_EW3:
+ option = 0x41049120;
+ option2 = 0x0000b000;
+ break;
+ case G200_EV:
+ option = 0x00000120;
+ option2 = 0x0000b000;
+ break;
+ case G200_EH:
+ case G200_EH3:
+ option = 0x00000120;
+ option2 = 0x0000b000;
+ break;
+ default:
+ option = 0;
+ option2 = 0;
+ }
+
+ if (option)
+ pci_write_config_dword(dev->pdev, PCI_MGA_OPTION, option);
+ if (option2)
+ pci_write_config_dword(dev->pdev, PCI_MGA_OPTION2, option2);
+
+ /* BAR 1 contains registers */
+ mdev->rmmio_base = pci_resource_start(dev->pdev, 1);
+ mdev->rmmio_size = pci_resource_len(dev->pdev, 1);
+
+ if (!devm_request_mem_region(dev->dev, mdev->rmmio_base,
+ mdev->rmmio_size, "mgadrmfb_mmio")) {
+ drm_err(dev, "can't reserve mmio registers\n");
+ return -ENOMEM;
+ }
+
+ mdev->rmmio = pcim_iomap(dev->pdev, 1, 0);
+ if (mdev->rmmio == NULL)
+ return -ENOMEM;
+
+ RREG_ECRT(0x03, crtcext3);
+ crtcext3 |= MGAREG_CRTCEXT3_MGAMODE;
+ WREG_ECRT(0x03, crtcext3);
+
+ return 0;
+}
+
+static void mgag200_g200_interpret_bios(struct mga_device *mdev,
+ const unsigned char *bios,
+ size_t size)
+{
+ static const char matrox[] = {'M', 'A', 'T', 'R', 'O', 'X'};
+ static const unsigned int expected_length[6] = {
+ 0, 64, 64, 64, 128, 128
+ };
+ struct drm_device *dev = &mdev->base;
+ const unsigned char *pins;
+ unsigned int pins_len, version;
+ int offset;
+ int tmp;
+
+ /* Test for MATROX string. */
+ if (size < 45 + sizeof(matrox))
+ return;
+ if (memcmp(&bios[45], matrox, sizeof(matrox)) != 0)
+ return;
+
+ /* Get the PInS offset. */
+ if (size < MGA_BIOS_OFFSET + 2)
+ return;
+ offset = (bios[MGA_BIOS_OFFSET + 1] << 8) | bios[MGA_BIOS_OFFSET];
+
+ /* Get PInS data structure. */
+
+ if (size < offset + 6)
+ return;
+ pins = bios + offset;
+ if (pins[0] == 0x2e && pins[1] == 0x41) {
+ version = pins[5];
+ pins_len = pins[2];
+ } else {
+ version = 1;
+ pins_len = pins[0] + (pins[1] << 8);
+ }
+
+ if (version < 1 || version > 5) {
+ drm_warn(dev, "Unknown BIOS PInS version: %d\n", version);
+ return;
+ }
+ if (pins_len != expected_length[version]) {
+ drm_warn(dev, "Unexpected BIOS PInS size: %d expected: %d\n",
+ pins_len, expected_length[version]);
+ return;
+ }
+ if (size < offset + pins_len)
+ return;
+
+ drm_dbg_kms(dev, "MATROX BIOS PInS version %d size: %d found\n",
+ version, pins_len);
+
+ /* Extract the clock values */
+
+ switch (version) {
+ case 1:
+ tmp = pins[24] + (pins[25] << 8);
+ if (tmp)
+ mdev->model.g200.pclk_max = tmp * 10;
+ break;
+ case 2:
+ if (pins[41] != 0xff)
+ mdev->model.g200.pclk_max = (pins[41] + 100) * 1000;
+ break;
+ case 3:
+ if (pins[36] != 0xff)
+ mdev->model.g200.pclk_max = (pins[36] + 100) * 1000;
+ if (pins[52] & 0x20)
+ mdev->model.g200.ref_clk = 14318;
+ break;
+ case 4:
+ if (pins[39] != 0xff)
+ mdev->model.g200.pclk_max = pins[39] * 4 * 1000;
+ if (pins[92] & 0x01)
+ mdev->model.g200.ref_clk = 14318;
+ break;
+ case 5:
+ tmp = pins[4] ? 8000 : 6000;
+ if (pins[123] != 0xff)
+ mdev->model.g200.pclk_min = pins[123] * tmp;
+ if (pins[38] != 0xff)
+ mdev->model.g200.pclk_max = pins[38] * tmp;
+ if (pins[110] & 0x01)
+ mdev->model.g200.ref_clk = 14318;
+ break;
+ default:
+ break;
+ }
+}
+
+static void mgag200_g200_init_refclk(struct mga_device *mdev)
+{
+ struct drm_device *dev = &mdev->base;
+ unsigned char __iomem *rom;
+ unsigned char *bios;
+ size_t size;
+
+ mdev->model.g200.pclk_min = 50000;
+ mdev->model.g200.pclk_max = 230000;
+ mdev->model.g200.ref_clk = 27050;
+
+ rom = pci_map_rom(dev->pdev, &size);
+ if (!rom)
+ return;
+
+ bios = vmalloc(size);
+ if (!bios)
+ goto out;
+ memcpy_fromio(bios, rom, size);
+
+ if (size != 0 && bios[0] == 0x55 && bios[1] == 0xaa)
+ mgag200_g200_interpret_bios(mdev, bios, size);
+
+ drm_dbg_kms(dev, "pclk_min: %ld pclk_max: %ld ref_clk: %ld\n",
+ mdev->model.g200.pclk_min, mdev->model.g200.pclk_max,
+ mdev->model.g200.ref_clk);
+
+ vfree(bios);
+out:
+ pci_unmap_rom(dev->pdev, rom);
+}
+
+static void mgag200_g200se_init_unique_id(struct mga_device *mdev)
+{
+ struct drm_device *dev = &mdev->base;
+
+ /* stash G200 SE model number for later use */
+ mdev->model.g200se.unique_rev_id = RREG32(0x1e24);
+
+ drm_dbg(dev, "G200 SE unique revision id is 0x%x\n",
+ mdev->model.g200se.unique_rev_id);
+}
+
+static int mgag200_device_init(struct mga_device *mdev, unsigned long flags)
+{
+ struct drm_device *dev = &mdev->base;
+ int ret;
+
+ mdev->flags = mgag200_flags_from_driver_data(flags);
+ mdev->type = mgag200_type_from_driver_data(flags);
+
+ ret = mgag200_regs_init(mdev);
+ if (ret)
+ return ret;
+
+ if (mdev->type == G200_PCI || mdev->type == G200_AGP)
+ mgag200_g200_init_refclk(mdev);
+ else if (IS_G200_SE(mdev))
+ mgag200_g200se_init_unique_id(mdev);
+
+ ret = mgag200_mm_init(mdev);
+ if (ret)
+ return ret;
+
+ ret = mgag200_modeset_init(mdev);
+ if (ret) {
+ drm_err(dev, "Fatal error during modeset init: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct mga_device *
+mgag200_device_create(struct pci_dev *pdev, unsigned long flags)
+{
+ struct drm_device *dev;
+ struct mga_device *mdev;
+ int ret;
+
+ mdev = devm_drm_dev_alloc(&pdev->dev, &mgag200_driver,
+ struct mga_device, base);
+ if (IS_ERR(mdev))
+ return mdev;
+ dev = &mdev->base;
+
+ dev->pdev = pdev;
+ pci_set_drvdata(pdev, dev);
+
+ ret = mgag200_device_init(mdev, flags);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return mdev;
+}
+
+/*
+ * PCI driver
+ */
+
+static const struct pci_device_id mgag200_pciidlist[] = {
+ { PCI_VENDOR_ID_MATROX, 0x520, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_PCI },
+ { PCI_VENDOR_ID_MATROX, 0x521, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_AGP },
+ { PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ G200_SE_A | MGAG200_FLAG_HW_BUG_NO_STARTADD},
{ PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
{ PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
{ PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
@@ -40,75 +331,47 @@
{0,}
};
-MODULE_DEVICE_TABLE(pci, pciidlist);
+MODULE_DEVICE_TABLE(pci, mgag200_pciidlist);
-static void mgag200_kick_out_firmware_fb(struct pci_dev *pdev)
+static int
+mgag200_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
- struct apertures_struct *ap;
- bool primary = false;
+ struct mga_device *mdev;
+ struct drm_device *dev;
+ int ret;
- ap = alloc_apertures(1);
- if (!ap)
- return;
+ drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "mgag200drmfb");
- ap->ranges[0].base = pci_resource_start(pdev, 0);
- ap->ranges[0].size = pci_resource_len(pdev, 0);
+ ret = pcim_enable_device(pdev);
+ if (ret)
+ return ret;
-#ifdef CONFIG_X86
- primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
-#endif
- drm_fb_helper_remove_conflicting_framebuffers(ap, "mgag200drmfb", primary);
- kfree(ap);
+ mdev = mgag200_device_create(pdev, ent->driver_data);
+ if (IS_ERR(mdev))
+ return PTR_ERR(mdev);
+ dev = &mdev->base;
+
+ ret = drm_dev_register(dev, ent->driver_data);
+ if (ret)
+ return ret;
+
+ drm_fbdev_generic_setup(dev, 0);
+
+ return 0;
}
-
-static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
- mgag200_kick_out_firmware_fb(pdev);
-
- return drm_get_pci_dev(pdev, ent, &driver);
-}
-
-static void mga_pci_remove(struct pci_dev *pdev)
+static void mgag200_pci_remove(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
- drm_put_dev(dev);
+ drm_dev_unregister(dev);
}
-
-static const struct file_operations mgag200_driver_fops = {
- .owner = THIS_MODULE,
- .open = drm_open,
- .release = drm_release,
- .unlocked_ioctl = drm_ioctl,
- .mmap = mgag200_mmap,
- .poll = drm_poll,
- .compat_ioctl = drm_compat_ioctl,
- .read = drm_read,
-};
-
-static struct drm_driver driver = {
- .driver_features = DRIVER_GEM | DRIVER_MODESET,
- .load = mgag200_driver_load,
- .unload = mgag200_driver_unload,
- .fops = &mgag200_driver_fops,
- .name = DRIVER_NAME,
- .desc = DRIVER_DESC,
- .date = DRIVER_DATE,
- .major = DRIVER_MAJOR,
- .minor = DRIVER_MINOR,
- .patchlevel = DRIVER_PATCHLEVEL,
-
- .gem_free_object_unlocked = mgag200_gem_free_object,
- .dumb_create = mgag200_dumb_create,
- .dumb_map_offset = mgag200_dumb_mmap_offset,
-};
static struct pci_driver mgag200_pci_driver = {
.name = DRIVER_NAME,
- .id_table = pciidlist,
- .probe = mga_pci_probe,
- .remove = mga_pci_remove,
+ .id_table = mgag200_pciidlist,
+ .probe = mgag200_pci_probe,
+ .remove = mgag200_pci_remove,
};
static int __init mgag200_init(void)
--
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