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399 lines
9.1 KiB
399 lines
9.1 KiB
// 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/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 (drm_firmware_drivers_only() && 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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