401 lines
9.2 KiB
C
401 lines
9.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2012 Red Hat
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*
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* Authors: Matthew Garrett
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* Dave Airlie
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*/
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#include <linux/console.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/vmalloc.h>
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#include <drm/drm_aperture.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_file.h>
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#include <drm/drm_ioctl.h>
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#include <drm/drm_pciids.h>
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#include "mgag200_drv.h"
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int mgag200_modeset = -1;
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MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
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module_param_named(modeset, mgag200_modeset, int, 0400);
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/*
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* DRM driver
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*/
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DEFINE_DRM_GEM_FOPS(mgag200_driver_fops);
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static const struct drm_driver mgag200_driver = {
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.driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET,
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.fops = &mgag200_driver_fops,
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.name = DRIVER_NAME,
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.desc = DRIVER_DESC,
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.date = DRIVER_DATE,
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.major = DRIVER_MAJOR,
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.minor = DRIVER_MINOR,
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.patchlevel = DRIVER_PATCHLEVEL,
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DRM_GEM_SHMEM_DRIVER_OPS,
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};
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/*
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* DRM device
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*/
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static bool mgag200_has_sgram(struct mga_device *mdev)
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{
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struct drm_device *dev = &mdev->base;
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struct pci_dev *pdev = to_pci_dev(dev->dev);
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u32 option;
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int ret;
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ret = pci_read_config_dword(pdev, PCI_MGA_OPTION, &option);
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if (drm_WARN(dev, ret, "failed to read PCI config dword: %d\n", ret))
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return false;
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return !!(option & PCI_MGA_OPTION_HARDPWMSK);
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}
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static int mgag200_regs_init(struct mga_device *mdev)
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{
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struct drm_device *dev = &mdev->base;
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struct pci_dev *pdev = to_pci_dev(dev->dev);
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u32 option, option2;
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u8 crtcext3;
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switch (mdev->type) {
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case G200_PCI:
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case G200_AGP:
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if (mgag200_has_sgram(mdev))
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option = 0x4049cd21;
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else
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option = 0x40499121;
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option2 = 0x00008000;
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break;
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case G200_SE_A:
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case G200_SE_B:
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option = 0x40049120;
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if (mgag200_has_sgram(mdev))
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option |= PCI_MGA_OPTION_HARDPWMSK;
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option2 = 0x00008000;
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break;
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case G200_WB:
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case G200_EW3:
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option = 0x41049120;
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option2 = 0x0000b000;
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break;
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case G200_EV:
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option = 0x00000120;
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option2 = 0x0000b000;
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break;
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case G200_EH:
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case G200_EH3:
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option = 0x00000120;
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option2 = 0x0000b000;
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break;
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default:
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option = 0;
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option2 = 0;
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}
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if (option)
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pci_write_config_dword(pdev, PCI_MGA_OPTION, option);
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if (option2)
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pci_write_config_dword(pdev, PCI_MGA_OPTION2, option2);
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/* BAR 1 contains registers */
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mdev->rmmio_base = pci_resource_start(pdev, 1);
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mdev->rmmio_size = pci_resource_len(pdev, 1);
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if (!devm_request_mem_region(dev->dev, mdev->rmmio_base,
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mdev->rmmio_size, "mgadrmfb_mmio")) {
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drm_err(dev, "can't reserve mmio registers\n");
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return -ENOMEM;
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}
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mdev->rmmio = pcim_iomap(pdev, 1, 0);
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if (mdev->rmmio == NULL)
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return -ENOMEM;
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RREG_ECRT(0x03, crtcext3);
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crtcext3 |= MGAREG_CRTCEXT3_MGAMODE;
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WREG_ECRT(0x03, crtcext3);
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return 0;
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}
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static void mgag200_g200_interpret_bios(struct mga_device *mdev,
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const unsigned char *bios,
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size_t size)
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{
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static const char matrox[] = {'M', 'A', 'T', 'R', 'O', 'X'};
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static const unsigned int expected_length[6] = {
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0, 64, 64, 64, 128, 128
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};
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struct drm_device *dev = &mdev->base;
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const unsigned char *pins;
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unsigned int pins_len, version;
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int offset;
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int tmp;
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/* Test for MATROX string. */
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if (size < 45 + sizeof(matrox))
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return;
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if (memcmp(&bios[45], matrox, sizeof(matrox)) != 0)
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return;
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/* Get the PInS offset. */
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if (size < MGA_BIOS_OFFSET + 2)
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return;
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offset = (bios[MGA_BIOS_OFFSET + 1] << 8) | bios[MGA_BIOS_OFFSET];
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/* Get PInS data structure. */
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if (size < offset + 6)
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return;
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pins = bios + offset;
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if (pins[0] == 0x2e && pins[1] == 0x41) {
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version = pins[5];
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pins_len = pins[2];
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} else {
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version = 1;
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pins_len = pins[0] + (pins[1] << 8);
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}
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if (version < 1 || version > 5) {
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drm_warn(dev, "Unknown BIOS PInS version: %d\n", version);
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return;
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}
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if (pins_len != expected_length[version]) {
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drm_warn(dev, "Unexpected BIOS PInS size: %d expected: %d\n",
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pins_len, expected_length[version]);
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return;
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}
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if (size < offset + pins_len)
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return;
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drm_dbg_kms(dev, "MATROX BIOS PInS version %d size: %d found\n",
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version, pins_len);
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/* Extract the clock values */
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switch (version) {
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case 1:
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tmp = pins[24] + (pins[25] << 8);
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if (tmp)
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mdev->model.g200.pclk_max = tmp * 10;
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break;
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case 2:
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if (pins[41] != 0xff)
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mdev->model.g200.pclk_max = (pins[41] + 100) * 1000;
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break;
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case 3:
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if (pins[36] != 0xff)
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mdev->model.g200.pclk_max = (pins[36] + 100) * 1000;
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if (pins[52] & 0x20)
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mdev->model.g200.ref_clk = 14318;
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break;
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case 4:
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if (pins[39] != 0xff)
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mdev->model.g200.pclk_max = pins[39] * 4 * 1000;
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if (pins[92] & 0x01)
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mdev->model.g200.ref_clk = 14318;
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break;
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case 5:
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tmp = pins[4] ? 8000 : 6000;
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if (pins[123] != 0xff)
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mdev->model.g200.pclk_min = pins[123] * tmp;
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if (pins[38] != 0xff)
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mdev->model.g200.pclk_max = pins[38] * tmp;
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if (pins[110] & 0x01)
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mdev->model.g200.ref_clk = 14318;
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break;
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default:
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break;
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}
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}
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static void mgag200_g200_init_refclk(struct mga_device *mdev)
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{
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struct drm_device *dev = &mdev->base;
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struct pci_dev *pdev = to_pci_dev(dev->dev);
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unsigned char __iomem *rom;
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unsigned char *bios;
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size_t size;
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mdev->model.g200.pclk_min = 50000;
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mdev->model.g200.pclk_max = 230000;
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mdev->model.g200.ref_clk = 27050;
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rom = pci_map_rom(pdev, &size);
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if (!rom)
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return;
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bios = vmalloc(size);
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if (!bios)
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goto out;
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memcpy_fromio(bios, rom, size);
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if (size != 0 && bios[0] == 0x55 && bios[1] == 0xaa)
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mgag200_g200_interpret_bios(mdev, bios, size);
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drm_dbg_kms(dev, "pclk_min: %ld pclk_max: %ld ref_clk: %ld\n",
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mdev->model.g200.pclk_min, mdev->model.g200.pclk_max,
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mdev->model.g200.ref_clk);
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vfree(bios);
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out:
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pci_unmap_rom(pdev, rom);
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}
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static void mgag200_g200se_init_unique_id(struct mga_device *mdev)
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{
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struct drm_device *dev = &mdev->base;
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/* stash G200 SE model number for later use */
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mdev->model.g200se.unique_rev_id = RREG32(0x1e24);
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drm_dbg(dev, "G200 SE unique revision id is 0x%x\n",
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mdev->model.g200se.unique_rev_id);
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}
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static struct mga_device *
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mgag200_device_create(struct pci_dev *pdev, enum mga_type type, unsigned long flags)
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{
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struct mga_device *mdev;
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struct drm_device *dev;
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int ret;
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mdev = devm_drm_dev_alloc(&pdev->dev, &mgag200_driver, struct mga_device, base);
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if (IS_ERR(mdev))
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return mdev;
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dev = &mdev->base;
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pci_set_drvdata(pdev, dev);
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mdev->flags = flags;
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mdev->type = type;
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ret = mgag200_regs_init(mdev);
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if (ret)
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return ERR_PTR(ret);
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if (mdev->type == G200_PCI || mdev->type == G200_AGP)
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mgag200_g200_init_refclk(mdev);
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else if (IS_G200_SE(mdev))
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mgag200_g200se_init_unique_id(mdev);
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ret = mgag200_mm_init(mdev);
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if (ret)
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return ERR_PTR(ret);
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ret = mgag200_modeset_init(mdev);
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if (ret)
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return ERR_PTR(ret);
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return mdev;
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}
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/*
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* PCI driver
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*/
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static const struct pci_device_id mgag200_pciidlist[] = {
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{ PCI_VENDOR_ID_MATROX, 0x520, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_PCI },
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{ PCI_VENDOR_ID_MATROX, 0x521, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_AGP },
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{ PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
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G200_SE_A | MGAG200_FLAG_HW_BUG_NO_STARTADD},
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{ PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
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{ PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
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{ PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
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{ PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH },
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{ PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER },
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{ PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 },
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{ PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 },
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{0,}
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};
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MODULE_DEVICE_TABLE(pci, mgag200_pciidlist);
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static enum mga_type mgag200_type_from_driver_data(kernel_ulong_t driver_data)
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{
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return (enum mga_type)(driver_data & MGAG200_TYPE_MASK);
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}
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static unsigned long mgag200_flags_from_driver_data(kernel_ulong_t driver_data)
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{
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return driver_data & MGAG200_FLAG_MASK;
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}
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static int
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mgag200_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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kernel_ulong_t driver_data = ent->driver_data;
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enum mga_type type = mgag200_type_from_driver_data(driver_data);
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unsigned long flags = mgag200_flags_from_driver_data(driver_data);
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struct mga_device *mdev;
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struct drm_device *dev;
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int ret;
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ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &mgag200_driver);
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if (ret)
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return ret;
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ret = pcim_enable_device(pdev);
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if (ret)
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return ret;
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mdev = mgag200_device_create(pdev, type, flags);
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if (IS_ERR(mdev))
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return PTR_ERR(mdev);
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dev = &mdev->base;
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ret = drm_dev_register(dev, 0);
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if (ret)
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return ret;
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drm_fbdev_generic_setup(dev, 0);
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return 0;
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}
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static void mgag200_pci_remove(struct pci_dev *pdev)
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{
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struct drm_device *dev = pci_get_drvdata(pdev);
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drm_dev_unregister(dev);
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}
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static struct pci_driver mgag200_pci_driver = {
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.name = DRIVER_NAME,
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.id_table = mgag200_pciidlist,
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.probe = mgag200_pci_probe,
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.remove = mgag200_pci_remove,
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};
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static int __init mgag200_init(void)
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{
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if (vgacon_text_force() && mgag200_modeset == -1)
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return -EINVAL;
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if (mgag200_modeset == 0)
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return -EINVAL;
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return pci_register_driver(&mgag200_pci_driver);
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}
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static void __exit mgag200_exit(void)
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{
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pci_unregister_driver(&mgag200_pci_driver);
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}
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module_init(mgag200_init);
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module_exit(mgag200_exit);
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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