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Diffstat (limited to 'src/drivers/aspeed/common/ast_main.c')
-rw-r--r--src/drivers/aspeed/common/ast_main.c393
1 files changed, 393 insertions, 0 deletions
diff --git a/src/drivers/aspeed/common/ast_main.c b/src/drivers/aspeed/common/ast_main.c
new file mode 100644
index 0000000000..071e49caf2
--- /dev/null
+++ b/src/drivers/aspeed/common/ast_main.c
@@ -0,0 +1,393 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ *
+ * 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 "ast_drv.h"
+
+#include "ast_dram_tables.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 int ast_detect_chip(struct drm_device *dev, bool *need_post)
+{
+ struct ast_private *ast = dev->dev_private;
+ uint32_t data, jreg;
+ ast_open_key(ast);
+
+ if (dev->pdev->device == PCI_CHIP_AST1180) {
+ ast->chip = AST1100;
+ DRM_INFO("AST 1180 detected\n");
+ } else {
+ pci_read_config_dword(ast->dev->pdev, 0x08, &data);
+ uint8_t revision = data & 0xff;
+
+ if (revision >= 0x30) {
+ ast->chip = AST2400;
+ DRM_INFO("AST 2400 detected\n");
+ } else if (revision >= 0x20) {
+ ast->chip = AST2300;
+ DRM_INFO("AST 2300 detected\n");
+ } else if (revision >= 0x10) {
+ ast_write32(ast, 0xf004, 0x1e6e0000);
+ ast_write32(ast, 0xf000, 0x1);
+
+ data = ast_read32(ast, 0x1207c);
+ switch (data & 0x0300) {
+ case 0x0200:
+ ast->chip = AST1100;
+ DRM_INFO("AST 1100 detected\n");
+ break;
+ case 0x0100:
+ ast->chip = AST2200;
+ DRM_INFO("AST 2200 detected\n");
+ break;
+ case 0x0000:
+ ast->chip = AST2150;
+ DRM_INFO("AST 2150 detected\n");
+ break;
+ default:
+ ast->chip = AST2100;
+ DRM_INFO("AST 2100 detected\n");
+ break;
+ }
+ ast->vga2_clone = false;
+ } else {
+ ast->chip = AST2000;
+ DRM_INFO("AST 2000 detected\n");
+ }
+ }
+
+ /*
+ * 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);
+ ast_enable_mmio(dev);
+ DRM_INFO("VGA not enabled on entry, requesting chip POST\n");
+ *need_post = true;
+ } else
+ *need_post = false;
+
+ /* Check if we support wide screen */
+ switch (ast->chip) {
+ case AST1180:
+ ast->support_wide_screen = true;
+ break;
+ 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;
+ /* Read SCU7c (silicon revision register) */
+ ast_write32(ast, 0xf004, 0x1e6e0000);
+ ast_write32(ast, 0xf000, 0x1);
+ data = ast_read32(ast, 0x1207c);
+ data &= 0x300;
+ if (ast->chip == AST2300 && data == 0x0) /* ast1300 */
+ ast->support_wide_screen = true;
+ if (ast->chip == AST2400 && data == 0x100) /* ast1400 */
+ ast->support_wide_screen = true;
+ }
+ break;
+ }
+
+ /* Check 3rd Tx option (digital output afaik) */
+ ast->tx_chip_type = AST_TX_NONE;
+
+ /*
+ * 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_type = AST_TX_SIL164;
+ }
+
+ if ((ast->chip == AST2300) || (ast->chip == AST2400)) {
+ /*
+ * 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_type = AST_TX_SIL164;
+ break;
+ case 0x08:
+ ast->dp501_fw_addr = kzalloc(32*1024, GFP_KERNEL);
+ if (ast->dp501_fw_addr) {
+ /* backup firmware */
+ if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) {
+ kfree(ast->dp501_fw_addr);
+ ast->dp501_fw_addr = NULL;
+ }
+ }
+ /* fallthrough */
+ case 0x0c:
+ ast->tx_chip_type = AST_TX_DP501;
+ }
+ }
+
+ /* Print stuff for diagnostic purposes */
+ switch(ast->tx_chip_type) {
+ case AST_TX_SIL164:
+ DRM_INFO("Using Sil164 TMDS transmitter\n");
+ break;
+ case AST_TX_DP501:
+ DRM_INFO("Using DP501 DisplayPort transmitter\n");
+ break;
+ default:
+ DRM_INFO("Analog VGA only\n");
+ }
+ return 0;
+}
+
+static int ast_get_dram_info(struct drm_device *dev)
+{
+ struct ast_private *ast = dev->dev_private;
+ uint8_t i;
+ uint32_t data, data2;
+ uint32_t denum, num, div, ref_pll;
+
+ ast_write32(ast, 0xf004, 0x1e6e0000);
+ ast_write32(ast, 0xf000, 0x1);
+
+
+ ast_write32(ast, 0x10000, 0xfc600309);
+
+ /* Wait up to 2.5 seconds for device initialization / register unlock */
+ for (i = 0; i < 250; i++) {
+ if (ast_read32(ast, 0x10000) == 0x01)
+ break;
+ mdelay(10);
+ }
+ if (ast_read32(ast, 0x10000) != 0x01)
+ dev_err(dev->pdev, "Unable to unlock SDRAM control registers\n");
+
+ data = ast_read32(ast, 0x10004);
+
+ if (data & 0x400)
+ ast->dram_bus_width = 16;
+ else
+ ast->dram_bus_width = 32;
+
+ if (ast->chip == AST2300 || ast->chip == AST2400) {
+ switch (data & 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 (data & 0x0c) {
+ case 0:
+ case 4:
+ ast->dram_type = AST_DRAM_512Mx16;
+ break;
+ case 8:
+ if (data & 0x40)
+ ast->dram_type = AST_DRAM_1Gx16;
+ else
+ ast->dram_type = AST_DRAM_512Mx32;
+ break;
+ case 0xc:
+ ast->dram_type = AST_DRAM_1Gx32;
+ break;
+ }
+ }
+
+ data = ast_read32(ast, 0x10120);
+ data2 = ast_read32(ast, 0x10170);
+ if (data2 & 0x2000)
+ ref_pll = 14318;
+ else
+ ref_pll = 12000;
+
+ denum = data & 0x1f;
+ num = (data & 0x3fe0) >> 5;
+ data = (data & 0xc000) >> 14;
+ switch (data) {
+ 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;
+}
+
+static u32 ast_get_vram_info(struct drm_device *dev)
+{
+ struct ast_private *ast = dev->dev_private;
+ u8 jreg;
+ u32 vram_size;
+ ast_open_key(ast);
+
+ vram_size = AST_VIDMEM_DEFAULT_SIZE;
+ jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
+ switch (jreg & 3) {
+ case 0: vram_size = AST_VIDMEM_SIZE_8M; break;
+ case 1: vram_size = AST_VIDMEM_SIZE_16M; break;
+ case 2: vram_size = AST_VIDMEM_SIZE_32M; break;
+ case 3: vram_size = AST_VIDMEM_SIZE_64M; break;
+ }
+
+ return vram_size;
+}
+
+int ast_driver_load(struct drm_device *dev, unsigned long flags)
+{
+ struct ast_private *ast;
+ bool need_post;
+ int ret = 0;
+ struct resource *res;
+
+ ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
+ if (!ast)
+ return -ENOMEM;
+
+ dev->dev_private = ast;
+ ast->dev = dev;
+
+ /* PCI BAR 1 */
+ res = find_resource(dev->pdev, 0x14);
+ if (!res) {
+ dev_err(dev->pdev, "BAR1 resource not found.\n");
+ ret = -EIO;
+ goto out_free;
+ }
+ ast->regs = res2mmio(res, 0, 0);
+ if (!ast->regs) {
+ ret = -EIO;
+ goto out_free;
+ }
+
+ /* PCI BAR 2 */
+ ast->io_space_uses_mmap = false;
+ res = find_resource(dev->pdev, 0x18);
+ if (!res) {
+ dev_err(dev->pdev, "BAR2 resource not found.\n");
+ ret = -EIO;
+ goto out_free;
+ }
+
+ /*
+ * 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 (!(res->flags & IORESOURCE_IO)) {
+ DRM_INFO("platform has no IO space, trying MMIO\n");
+ ast->ioregs = ast->regs + AST_IO_MM_OFFSET;
+ ast->io_space_uses_mmap = true;
+ }
+
+ /* "map" IO regs if the above hasn't done so already */
+ if (!ast->ioregs) {
+ ast->ioregs = res2mmio(res, 0, 0);
+ if (!ast->ioregs) {
+ ret = -EIO;
+ goto out_free;
+ }
+ /* Adjust the I/O space location to match expectations (the code expects offset 0x0 to be I/O location 0x380) */
+ ast->ioregs = (void *)AST_IO_MM_OFFSET;
+ }
+
+ ast_detect_chip(dev, &need_post);
+
+ if (ast->chip != AST1180) {
+ ast_get_dram_info(dev);
+ ast->vram_size = ast_get_vram_info(dev);
+ DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
+ }
+
+ if (need_post)
+ ast_post_gpu(dev);
+
+ return 0;
+out_free:
+ kfree(ast);
+ dev->dev_private = NULL;
+ return ret;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-03 06:54:43 +0000