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path: root/drivers/gpu/drm/ast/ast_main.c
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Diffstat (limited to 'drivers/gpu/drm/ast/ast_main.c')
-rw-r--r--drivers/gpu/drm/ast/ast_main.c477
1 files changed, 0 insertions, 477 deletions
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
deleted file mode 100644
index f83ce77127cb..000000000000
--- a/drivers/gpu/drm/ast/ast_main.c
+++ /dev/null
@@ -1,477 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- */
-/*
- * Authors: Dave Airlie <airlied@redhat.com>
- */
-
-#include <linux/pci.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_gem.h>
-#include <drm/drm_managed.h>
-
-#include "ast_drv.h"
-
-void ast_set_index_reg_mask(struct ast_private *ast,
- uint32_t base, uint8_t index,
- uint8_t mask, uint8_t val)
-{
- u8 tmp;
- ast_io_write8(ast, base, index);
- tmp = (ast_io_read8(ast, base + 1) & mask) | val;
- ast_set_index_reg(ast, base, index, tmp);
-}
-
-uint8_t ast_get_index_reg(struct ast_private *ast,
- uint32_t base, uint8_t index)
-{
- uint8_t ret;
- ast_io_write8(ast, base, index);
- ret = ast_io_read8(ast, base + 1);
- return ret;
-}
-
-uint8_t ast_get_index_reg_mask(struct ast_private *ast,
- uint32_t base, uint8_t index, uint8_t mask)
-{
- uint8_t ret;
- ast_io_write8(ast, base, index);
- ret = ast_io_read8(ast, base + 1) & mask;
- return ret;
-}
-
-static void ast_detect_config_mode(struct drm_device *dev, u32 *scu_rev)
-{
- struct device_node *np = dev->dev->of_node;
- struct ast_private *ast = to_ast_private(dev);
- struct pci_dev *pdev = to_pci_dev(dev->dev);
- uint32_t data, jregd0, jregd1;
-
- /* Defaults */
- ast->config_mode = ast_use_defaults;
- *scu_rev = 0xffffffff;
-
- /* Check if we have device-tree properties */
- if (np && !of_property_read_u32(np, "aspeed,scu-revision-id",
- scu_rev)) {
- /* We do, disable P2A access */
- ast->config_mode = ast_use_dt;
- drm_info(dev, "Using device-tree for configuration\n");
- return;
- }
-
- /* Not all families have a P2A bridge */
- if (pdev->device != PCI_CHIP_AST2000)
- return;
-
- /*
- * The BMC will set SCU 0x40 D[12] to 1 if the P2 bridge
- * is disabled. We force using P2A if VGA only mode bit
- * is set D[7]
- */
- jregd0 = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
- jregd1 = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);
- if (!(jregd0 & 0x80) || !(jregd1 & 0x10)) {
- /* Patch AST2500 */
- if (((pdev->revision & 0xF0) == 0x40)
- && ((jregd0 & AST_VRAM_INIT_STATUS_MASK) == 0))
- ast_patch_ahb_2500(ast);
-
- /* Double check it's actually working */
- data = ast_read32(ast, 0xf004);
- if ((data != 0xFFFFFFFF) && (data != 0x00)) {
- /* P2A works, grab silicon revision */
- ast->config_mode = ast_use_p2a;
-
- drm_info(dev, "Using P2A bridge for configuration\n");
-
- /* Read SCU7c (silicon revision register) */
- ast_write32(ast, 0xf004, 0x1e6e0000);
- ast_write32(ast, 0xf000, 0x1);
- *scu_rev = ast_read32(ast, 0x1207c);
- return;
- }
- }
-
- /* We have a P2A bridge but it's disabled */
- drm_info(dev, "P2A bridge disabled, using default configuration\n");
-}
-
-static int ast_detect_chip(struct drm_device *dev, bool *need_post)
-{
- struct ast_private *ast = to_ast_private(dev);
- struct pci_dev *pdev = to_pci_dev(dev->dev);
- uint32_t jreg, scu_rev;
-
- /*
- * If VGA isn't enabled, we need to enable now or subsequent
- * access to the scratch registers will fail. We also inform
- * our caller that it needs to POST the chip
- * (Assumption: VGA not enabled -> need to POST)
- */
- if (!ast_is_vga_enabled(dev)) {
- ast_enable_vga(dev);
- drm_info(dev, "VGA not enabled on entry, requesting chip POST\n");
- *need_post = true;
- } else
- *need_post = false;
-
-
- /* Enable extended register access */
- ast_open_key(ast);
- ast_enable_mmio(dev);
-
- /* Find out whether P2A works or whether to use device-tree */
- ast_detect_config_mode(dev, &scu_rev);
-
- /* Identify chipset */
- if (pdev->revision >= 0x50) {
- ast->chip = AST2600;
- drm_info(dev, "AST 2600 detected\n");
- } else if (pdev->revision >= 0x40) {
- ast->chip = AST2500;
- drm_info(dev, "AST 2500 detected\n");
- } else if (pdev->revision >= 0x30) {
- ast->chip = AST2400;
- drm_info(dev, "AST 2400 detected\n");
- } else if (pdev->revision >= 0x20) {
- ast->chip = AST2300;
- drm_info(dev, "AST 2300 detected\n");
- } else if (pdev->revision >= 0x10) {
- switch (scu_rev & 0x0300) {
- case 0x0200:
- ast->chip = AST1100;
- drm_info(dev, "AST 1100 detected\n");
- break;
- case 0x0100:
- ast->chip = AST2200;
- drm_info(dev, "AST 2200 detected\n");
- break;
- case 0x0000:
- ast->chip = AST2150;
- drm_info(dev, "AST 2150 detected\n");
- break;
- default:
- ast->chip = AST2100;
- drm_info(dev, "AST 2100 detected\n");
- break;
- }
- ast->vga2_clone = false;
- } else {
- ast->chip = AST2000;
- drm_info(dev, "AST 2000 detected\n");
- }
-
- /* Check if we support wide screen */
- switch (ast->chip) {
- case AST2000:
- ast->support_wide_screen = false;
- break;
- default:
- jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
- if (!(jreg & 0x80))
- ast->support_wide_screen = true;
- else if (jreg & 0x01)
- ast->support_wide_screen = true;
- else {
- ast->support_wide_screen = false;
- if (ast->chip == AST2300 &&
- (scu_rev & 0x300) == 0x0) /* ast1300 */
- ast->support_wide_screen = true;
- if (ast->chip == AST2400 &&
- (scu_rev & 0x300) == 0x100) /* ast1400 */
- ast->support_wide_screen = true;
- if (ast->chip == AST2500 &&
- scu_rev == 0x100) /* ast2510 */
- ast->support_wide_screen = true;
- if (ast->chip == AST2600) /* ast2600 */
- ast->support_wide_screen = true;
- }
- break;
- }
-
- /* Check 3rd Tx option (digital output afaik) */
- ast->tx_chip_types |= AST_TX_NONE_BIT;
-
- /*
- * VGACRA3 Enhanced Color Mode Register, check if DVO is already
- * enabled, in that case, assume we have a SIL164 TMDS transmitter
- *
- * Don't make that assumption if we the chip wasn't enabled and
- * is at power-on reset, otherwise we'll incorrectly "detect" a
- * SIL164 when there is none.
- */
- if (!*need_post) {
- jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xff);
- if (jreg & 0x80)
- ast->tx_chip_types = AST_TX_SIL164_BIT;
- }
-
- if ((ast->chip == AST2300) || (ast->chip == AST2400) || (ast->chip == AST2500)) {
- /*
- * On AST2300 and 2400, look the configuration set by the SoC in
- * the SOC scratch register #1 bits 11:8 (interestingly marked
- * as "reserved" in the spec)
- */
- jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);
- switch (jreg) {
- case 0x04:
- ast->tx_chip_types = AST_TX_SIL164_BIT;
- break;
- case 0x08:
- ast->dp501_fw_addr = drmm_kzalloc(dev, 32*1024, GFP_KERNEL);
- if (ast->dp501_fw_addr) {
- /* backup firmware */
- if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) {
- drmm_kfree(dev, ast->dp501_fw_addr);
- ast->dp501_fw_addr = NULL;
- }
- }
- fallthrough;
- case 0x0c:
- ast->tx_chip_types = AST_TX_DP501_BIT;
- }
- } else if (ast->chip == AST2600)
- ast_dp_launch(&ast->base, 0);
-
- /* Print stuff for diagnostic purposes */
- if (ast->tx_chip_types & AST_TX_NONE_BIT)
- drm_info(dev, "Using analog VGA\n");
- if (ast->tx_chip_types & AST_TX_SIL164_BIT)
- drm_info(dev, "Using Sil164 TMDS transmitter\n");
- if (ast->tx_chip_types & AST_TX_DP501_BIT)
- drm_info(dev, "Using DP501 DisplayPort transmitter\n");
-
- return 0;
-}
-
-static int ast_get_dram_info(struct drm_device *dev)
-{
- struct device_node *np = dev->dev->of_node;
- struct ast_private *ast = to_ast_private(dev);
- uint32_t mcr_cfg, mcr_scu_mpll, mcr_scu_strap;
- uint32_t denum, num, div, ref_pll, dsel;
-
- switch (ast->config_mode) {
- case ast_use_dt:
- /*
- * If some properties are missing, use reasonable
- * defaults for AST2400
- */
- if (of_property_read_u32(np, "aspeed,mcr-configuration",
- &mcr_cfg))
- mcr_cfg = 0x00000577;
- if (of_property_read_u32(np, "aspeed,mcr-scu-mpll",
- &mcr_scu_mpll))
- mcr_scu_mpll = 0x000050C0;
- if (of_property_read_u32(np, "aspeed,mcr-scu-strap",
- &mcr_scu_strap))
- mcr_scu_strap = 0;
- break;
- case ast_use_p2a:
- ast_write32(ast, 0xf004, 0x1e6e0000);
- ast_write32(ast, 0xf000, 0x1);
- mcr_cfg = ast_read32(ast, 0x10004);
- mcr_scu_mpll = ast_read32(ast, 0x10120);
- mcr_scu_strap = ast_read32(ast, 0x10170);
- break;
- case ast_use_defaults:
- default:
- ast->dram_bus_width = 16;
- ast->dram_type = AST_DRAM_1Gx16;
- if (ast->chip == AST2500)
- ast->mclk = 800;
- else
- ast->mclk = 396;
- return 0;
- }
-
- if (mcr_cfg & 0x40)
- ast->dram_bus_width = 16;
- else
- ast->dram_bus_width = 32;
-
- if (ast->chip == AST2500) {
- switch (mcr_cfg & 0x03) {
- case 0:
- ast->dram_type = AST_DRAM_1Gx16;
- break;
- default:
- case 1:
- ast->dram_type = AST_DRAM_2Gx16;
- break;
- case 2:
- ast->dram_type = AST_DRAM_4Gx16;
- break;
- case 3:
- ast->dram_type = AST_DRAM_8Gx16;
- break;
- }
- } else if (ast->chip == AST2300 || ast->chip == AST2400) {
- switch (mcr_cfg & 0x03) {
- case 0:
- ast->dram_type = AST_DRAM_512Mx16;
- break;
- default:
- case 1:
- ast->dram_type = AST_DRAM_1Gx16;
- break;
- case 2:
- ast->dram_type = AST_DRAM_2Gx16;
- break;
- case 3:
- ast->dram_type = AST_DRAM_4Gx16;
- break;
- }
- } else {
- switch (mcr_cfg & 0x0c) {
- case 0:
- case 4:
- ast->dram_type = AST_DRAM_512Mx16;
- break;
- case 8:
- if (mcr_cfg & 0x40)
- ast->dram_type = AST_DRAM_1Gx16;
- else
- ast->dram_type = AST_DRAM_512Mx32;
- break;
- case 0xc:
- ast->dram_type = AST_DRAM_1Gx32;
- break;
- }
- }
-
- if (mcr_scu_strap & 0x2000)
- ref_pll = 14318;
- else
- ref_pll = 12000;
-
- denum = mcr_scu_mpll & 0x1f;
- num = (mcr_scu_mpll & 0x3fe0) >> 5;
- dsel = (mcr_scu_mpll & 0xc000) >> 14;
- switch (dsel) {
- case 3:
- div = 0x4;
- break;
- case 2:
- case 1:
- div = 0x2;
- break;
- default:
- div = 0x1;
- break;
- }
- ast->mclk = ref_pll * (num + 2) / ((denum + 2) * (div * 1000));
- return 0;
-}
-
-/*
- * Run this function as part of the HW device cleanup; not
- * when the DRM device gets released.
- */
-static void ast_device_release(void *data)
-{
- struct ast_private *ast = data;
-
- /* enable standard VGA decode */
- ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x04);
-}
-
-struct ast_private *ast_device_create(const struct drm_driver *drv,
- struct pci_dev *pdev,
- unsigned long flags)
-{
- struct drm_device *dev;
- struct ast_private *ast;
- bool need_post;
- int ret = 0;
-
- ast = devm_drm_dev_alloc(&pdev->dev, drv, struct ast_private, base);
- if (IS_ERR(ast))
- return ast;
- dev = &ast->base;
-
- pci_set_drvdata(pdev, dev);
-
- ret = drmm_mutex_init(dev, &ast->ioregs_lock);
- if (ret)
- return ERR_PTR(ret);
-
- ast->regs = pcim_iomap(pdev, 1, 0);
- if (!ast->regs)
- return ERR_PTR(-EIO);
-
- /*
- * If we don't have IO space at all, use MMIO now and
- * assume the chip has MMIO enabled by default (rev 0x20
- * and higher).
- */
- if (!(pci_resource_flags(pdev, 2) & IORESOURCE_IO)) {
- drm_info(dev, "platform has no IO space, trying MMIO\n");
- ast->ioregs = ast->regs + AST_IO_MM_OFFSET;
- }
-
- /* "map" IO regs if the above hasn't done so already */
- if (!ast->ioregs) {
- ast->ioregs = pcim_iomap(pdev, 2, 0);
- if (!ast->ioregs)
- return ERR_PTR(-EIO);
- }
-
- ast_detect_chip(dev, &need_post);
-
- ret = ast_get_dram_info(dev);
- if (ret)
- return ERR_PTR(ret);
-
- drm_info(dev, "dram MCLK=%u Mhz type=%d bus_width=%d\n",
- ast->mclk, ast->dram_type, ast->dram_bus_width);
-
- if (need_post)
- ast_post_gpu(dev);
-
- ret = ast_mm_init(ast);
- if (ret)
- return ERR_PTR(ret);
-
- /* map reserved buffer */
- ast->dp501_fw_buf = NULL;
- if (ast->vram_size < pci_resource_len(pdev, 0)) {
- ast->dp501_fw_buf = pci_iomap_range(pdev, 0, ast->vram_size, 0);
- if (!ast->dp501_fw_buf)
- drm_info(dev, "failed to map reserved buffer!\n");
- }
-
- ret = ast_mode_config_init(ast);
- if (ret)
- return ERR_PTR(ret);
-
- ret = devm_add_action_or_reset(dev->dev, ast_device_release, ast);
- if (ret)
- return ERR_PTR(ret);
-
- return ast;
-}
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