/* * cx18 firmware functions * * Copyright (C) 2007 Hans Verkuil * Copyright (C) 2008 Andy Walls * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA * 02111-1307 USA */ #include "cx18-driver.h" #include "cx18-io.h" #include "cx18-scb.h" #include "cx18-irq.h" #include "cx18-firmware.h" #include "cx18-cards.h" #include #define CX18_PROC_SOFT_RESET 0xc70010 #define CX18_DDR_SOFT_RESET 0xc70014 #define CX18_CLOCK_SELECT1 0xc71000 #define CX18_CLOCK_SELECT2 0xc71004 #define CX18_HALF_CLOCK_SELECT1 0xc71008 #define CX18_HALF_CLOCK_SELECT2 0xc7100C #define CX18_CLOCK_POLARITY1 0xc71010 #define CX18_CLOCK_POLARITY2 0xc71014 #define CX18_ADD_DELAY_ENABLE1 0xc71018 #define CX18_ADD_DELAY_ENABLE2 0xc7101C #define CX18_CLOCK_ENABLE1 0xc71020 #define CX18_CLOCK_ENABLE2 0xc71024 #define CX18_REG_BUS_TIMEOUT_EN 0xc72024 #define CX18_FAST_CLOCK_PLL_INT 0xc78000 #define CX18_FAST_CLOCK_PLL_FRAC 0xc78004 #define CX18_FAST_CLOCK_PLL_POST 0xc78008 #define CX18_FAST_CLOCK_PLL_PRESCALE 0xc7800C #define CX18_FAST_CLOCK_PLL_ADJUST_BANDWIDTH 0xc78010 #define CX18_SLOW_CLOCK_PLL_INT 0xc78014 #define CX18_SLOW_CLOCK_PLL_FRAC 0xc78018 #define CX18_SLOW_CLOCK_PLL_POST 0xc7801C #define CX18_MPEG_CLOCK_PLL_INT 0xc78040 #define CX18_MPEG_CLOCK_PLL_FRAC 0xc78044 #define CX18_MPEG_CLOCK_PLL_POST 0xc78048 #define CX18_PLL_POWER_DOWN 0xc78088 #define CX18_SW1_INT_STATUS 0xc73104 #define CX18_SW1_INT_ENABLE_PCI 0xc7311C #define CX18_SW2_INT_SET 0xc73140 #define CX18_SW2_INT_STATUS 0xc73144 #define CX18_ADEC_CONTROL 0xc78120 #define CX18_DDR_REQUEST_ENABLE 0xc80000 #define CX18_DDR_CHIP_CONFIG 0xc80004 #define CX18_DDR_REFRESH 0xc80008 #define CX18_DDR_TIMING1 0xc8000C #define CX18_DDR_TIMING2 0xc80010 #define CX18_DDR_POWER_REG 0xc8001C #define CX18_DDR_TUNE_LANE 0xc80048 #define CX18_DDR_INITIAL_EMRS 0xc80054 #define CX18_DDR_MB_PER_ROW_7 0xc8009C #define CX18_DDR_BASE_63_ADDR 0xc804FC #define CX18_WMB_CLIENT02 0xc90108 #define CX18_WMB_CLIENT05 0xc90114 #define CX18_WMB_CLIENT06 0xc90118 #define CX18_WMB_CLIENT07 0xc9011C #define CX18_WMB_CLIENT08 0xc90120 #define CX18_WMB_CLIENT09 0xc90124 #define CX18_WMB_CLIENT10 0xc90128 #define CX18_WMB_CLIENT11 0xc9012C #define CX18_WMB_CLIENT12 0xc90130 #define CX18_WMB_CLIENT13 0xc90134 #define CX18_WMB_CLIENT14 0xc90138 #define CX18_DSP0_INTERRUPT_MASK 0xd0004C #define APU_ROM_SYNC1 0x6D676553 /* "mgeS" */ #define APU_ROM_SYNC2 0x72646548 /* "rdeH" */ struct cx18_apu_rom_seghdr { u32 sync1; u32 sync2; u32 addr; u32 size; }; static int load_cpu_fw_direct(const char *fn, u8 __iomem *mem, struct cx18 *cx) { const struct firmware *fw = NULL; int i, j; unsigned size; u32 __iomem *dst = (u32 __iomem *)mem; const u32 *src; if (request_firmware(&fw, fn, &cx->dev->dev)) { CX18_ERR("Unable to open firmware %s\n", fn); CX18_ERR("Did you put the firmware in the hotplug firmware directory?\n"); return -ENOMEM; } src = (const u32 *)fw->data; for (i = 0; i < fw->size; i += 4096) { cx18_setup_page(cx, i); for (j = i; j < fw->size && j < i + 4096; j += 4) { /* no need for endianness conversion on the ppc */ cx18_raw_writel(cx, *src, dst); if (cx18_raw_readl(cx, dst) != *src) { CX18_ERR("Mismatch at offset %x\n", i); release_firmware(fw); cx18_setup_page(cx, 0); return -EIO; } dst++; src++; } } if (!test_bit(CX18_F_I_LOADED_FW, &cx->i_flags)) CX18_INFO("loaded %s firmware (%zd bytes)\n", fn, fw->size); size = fw->size; release_firmware(fw); cx18_setup_page(cx, SCB_OFFSET); return size; } static int load_apu_fw_direct(const char *fn, u8 __iomem *dst, struct cx18 *cx, u32 *entry_addr) { const struct firmware *fw = NULL; int i, j; unsigned size; const u32 *src; struct cx18_apu_rom_seghdr seghdr; const u8 *vers; u32 offset = 0; u32 apu_version = 0; int sz; if (request_firmware(&fw, fn, &cx->dev->dev)) { CX18_ERR("unable to open firmware %s\n", fn); CX18_ERR("did you put the firmware in the hotplug firmware directory?\n"); cx18_setup_page(cx, 0); return -ENOMEM; } *entry_addr = 0; src = (const u32 *)fw->data; vers = fw->data + sizeof(seghdr); sz = fw->size; apu_version = (vers[0] << 24) | (vers[4] << 16) | vers[32]; while (offset + sizeof(seghdr) < fw->size) { /* TODO: byteswapping */ memcpy(&seghdr, src + offset / 4, sizeof(seghdr)); offset += sizeof(seghdr); if (seghdr.sync1 != APU_ROM_SYNC1 || seghdr.sync2 != APU_ROM_SYNC2) { offset += seghdr.size; continue; } CX18_DEBUG_INFO("load segment %x-%x\n", seghdr.addr, seghdr.addr + seghdr.size - 1); if (*entry_addr == 0) *entry_addr = seghdr.addr; if (offset + seghdr.size > sz) break; for (i = 0; i < seghdr.size; i += 4096) { cx18_setup_page(cx, seghdr.addr + i); for (j = i; j < seghdr.size && j < i + 4096; j += 4) { /* no need for endianness conversion on the ppc */ cx18_raw_writel(cx, src[(offset + j) / 4], dst + seghdr.addr + j); if (cx18_raw_readl(cx, dst + seghdr.addr + j) != src[(offset + j) / 4]) { CX18_ERR("Mismatch at offset %x\n", offset + j); release_firmware(fw); cx18_setup_page(cx, 0); return -EIO; } } } offset += seghdr.size; } if (!test_bit(CX18_F_I_LOADED_FW, &cx->i_flags)) CX18_INFO("loaded %s firmware V%08x (%zd bytes)\n", fn, apu_version, fw->size); size = fw->size; release_firmware(fw); cx18_setup_page(cx, 0); return size; } void cx18_halt_firmware(struct cx18 *cx) { CX18_DEBUG_INFO("Preparing for firmware halt.\n"); cx18_write_reg_expect(cx, 0x000F000F, CX18_PROC_SOFT_RESET, 0x0000000F, 0x000F000F); cx18_write_reg_expect(cx, 0x00020002, CX18_ADEC_CONTROL, 0x00000002, 0x00020002); } void cx18_init_power(struct cx18 *cx, int lowpwr) { /* power-down Spare and AOM PLLs */ /* power-up fast, slow and mpeg PLLs */ cx18_write_reg(cx, 0x00000008, CX18_PLL_POWER_DOWN); /* ADEC out of sleep */ cx18_write_reg_expect(cx, 0x00020000, CX18_ADEC_CONTROL, 0x00000000, 0x00020002); /* The fast clock is at 200/245 MHz */ cx18_write_reg(cx, lowpwr ? 0xD : 0x11, CX18_FAST_CLOCK_PLL_INT); cx18_write_reg(cx, lowpwr ? 0x1EFBF37 : 0x038E3D7, CX18_FAST_CLOCK_PLL_FRAC); cx18_write_reg(cx, 2, CX18_FAST_CLOCK_PLL_POST); cx18_write_reg(cx, 1, CX18_FAST_CLOCK_PLL_PRESCALE); cx18_write_reg(cx, 4, CX18_FAST_CLOCK_PLL_ADJUST_BANDWIDTH); /* set slow clock to 125/120 MHz */ cx18_write_reg(cx, lowpwr ? 0x11 : 0x10, CX18_SLOW_CLOCK_PLL_INT); cx18_write_reg(cx, lowpwr ? 0xEBAF05 : 0x18618A8, CX18_SLOW_CLOCK_PLL_FRAC); cx18_write_reg(cx, 4, CX18_SLOW_CLOCK_PLL_POST); /* mpeg clock pll 54MHz */ cx18_write_reg(cx, 0xF, CX18_MPEG_CLOCK_PLL_INT); cx18_write_reg(cx, 0x2BCFEF, CX18_MPEG_CLOCK_PLL_FRAC); cx18_write_reg(cx, 8, CX18_MPEG_CLOCK_PLL_POST); /* Defaults */ /* APU = SC or SC/2 = 125/62.5 */ /* EPU = SC = 125 */ /* DDR = FC = 180 */ /* ENC = SC = 125 */ /* AI1 = SC = 125 */ /* VIM2 = disabled */ /* PCI = FC/2 = 90 */ /* AI2 = disabled */ /* DEMUX = disabled */ /* AO = SC/2 = 62.5 */ /* SER = 54MHz */ /* VFC = disabled */ /* USB = disabled */ if (lowpwr) { cx18_write_reg_expect(cx, 0xFFFF0020, CX18_CLOCK_SELECT1, 0x00000020, 0xFFFFFFFF); cx18_write_reg_expect(cx, 0xFFFF0004, CX18_CLOCK_SELECT2, 0x00000004, 0xFFFFFFFF); } else { /* This doesn't explicitly set every clock select */ cx18_write_reg_expect(cx, 0x00060004, CX18_CLOCK_SELECT1, 0x00000004, 0x00060006); cx18_write_reg_expect(cx, 0x00060006, CX18_CLOCK_SELECT2, 0x00000006, 0x00060006); } cx18_write_reg_expect(cx, 0xFFFF0002, CX18_HALF_CLOCK_SELECT1, 0x00000002, 0xFFFFFFFF); cx18_write_reg_expect(cx, 0xFFFF0104, CX18_HALF_CLOCK_SELECT2, 0x00000104, 0xFFFFFFFF); cx18_write_reg_expect(cx, 0xFFFF9026, CX18_CLOCK_ENABLE1, 0x00009026, 0xFFFFFFFF); cx18_write_reg_expect(cx, 0xFFFF3105, CX18_CLOCK_ENABLE2, 0x00003105, 0xFFFFFFFF); } void cx18_init_memory(struct cx18 *cx) { cx18_msleep_timeout(10, 0); cx18_write_reg_expect(cx, 0x00010000, CX18_DDR_SOFT_RESET, 0x00000000, 0x00010001); cx18_msleep_timeout(10, 0); cx18_write_reg(cx, cx->card->ddr.chip_config, CX18_DDR_CHIP_CONFIG); cx18_msleep_timeout(10, 0); cx18_write_reg(cx, cx->card->ddr.refresh, CX18_DDR_REFRESH); cx18_write_reg(cx, cx->card->ddr.timing1, CX18_DDR_TIMING1); cx18_write_reg(cx, cx->card->ddr.timing2, CX18_DDR_TIMING2); cx18_msleep_timeout(10, 0); /* Initialize DQS pad time */ cx18_write_reg(cx, cx->card->ddr.tune_lane, CX18_DDR_TUNE_LANE); cx18_write_reg(cx, cx->card->ddr.initial_emrs, CX18_DDR_INITIAL_EMRS); cx18_msleep_timeout(10, 0); cx18_write_reg_expect(cx, 0x00020000, CX18_DDR_SOFT_RESET, 0x00000000, 0x00020002); cx18_msleep_timeout(10, 0); /* use power-down mode when idle */ cx18_write_reg(cx, 0x00000010, CX18_DDR_POWER_REG); cx18_write_reg_expect(cx, 0x00010001, CX18_REG_BUS_TIMEOUT_EN, 0x00000001, 0x00010001); cx18_write_reg(cx, 0x48, CX18_DDR_MB_PER_ROW_7); cx18_write_reg(cx, 0xE0000, CX18_DDR_BASE_63_ADDR); cx18_write_reg(cx, 0x00000101, CX18_WMB_CLIENT02); /* AO */ cx18_write_reg(cx, 0x00000101, CX18_WMB_CLIENT09); /* AI2 */ cx18_write_reg(cx, 0x00000101, CX18_WMB_CLIENT05); /* VIM1 */ cx18_write_reg(cx, 0x00000101, CX18_WMB_CLIENT06); /* AI1 */ cx18_write_reg(cx, 0x00000101, CX18_WMB_CLIENT07); /* 3D comb */ cx18_write_reg(cx, 0x00000101, CX18_WMB_CLIENT10); /* ME */ cx18_write_reg(cx, 0x00000101, CX18_WMB_CLIENT12); /* ENC */ cx18_write_reg(cx, 0x00000101, CX18_WMB_CLIENT13); /* PK */ cx18_write_reg(cx, 0x00000101, CX18_WMB_CLIENT11); /* RC */ cx18_write_reg(cx, 0x00000101, CX18_WMB_CLIENT14); /* AVO */ } int cx18_firmware_init(struct cx18 *cx) { /* Allow chip to control CLKRUN */ cx18_write_reg(cx, 0x5, CX18_DSP0_INTERRUPT_MASK); /* Stop the firmware */ cx18_write_reg_expect(cx, 0x000F000F, CX18_PROC_SOFT_RESET, 0x0000000F, 0x000F000F); cx18_msleep_timeout(1, 0); cx18_sw1_irq_enable(cx, IRQ_CPU_TO_EPU | IRQ_APU_TO_EPU); cx18_sw2_irq_enable(cx, IRQ_CPU_TO_EPU_ACK | IRQ_APU_TO_EPU_ACK); /* Only if the processor is not running */ if (cx18_read_reg(cx, CX18_PROC_SOFT_RESET) & 8) { u32 fw_entry_addr = 0; int sz = load_apu_fw_direct("v4l-cx23418-apu.fw", cx->enc_mem, cx, &fw_entry_addr); if (sz <= 0) return sz; /* Clear bit0 for APU to start from 0 */ cx18_write_reg(cx, cx18_read_reg(cx, 0xc72030) & ~1, 0xc72030); cx18_write_enc(cx, 0xE51FF004, 0); /* ldr pc, [pc, #-4] */ cx18_write_enc(cx, fw_entry_addr, 4); /* Start APU */ cx18_write_reg_expect(cx, 0x00010000, CX18_PROC_SOFT_RESET, 0x00000000, 0x00010001); cx18_msleep_timeout(500, 0); sz = sz <= 0 ? sz : load_cpu_fw_direct("v4l-cx23418-cpu.fw", cx->enc_mem, cx); if (sz > 0) { int retries = 0; /* start the CPU */ cx18_write_reg_expect(cx, 0x00080000, CX18_PROC_SOFT_RESET, 0x00000000, 0x00080008); while (retries++ < 50) { /* Loop for max 500mS */ if ((cx18_read_reg(cx, CX18_PROC_SOFT_RESET) & 1) == 0) break; cx18_msleep_timeout(10, 0); } cx18_msleep_timeout(200, 0); if (retries == 51) { CX18_ERR("Could not start the CPU\n"); return -EIO; } } if (sz <= 0) return -EIO; } /* * The CPU firmware apparently sets up to receive an interrupt for it's * outgoing IRQ_CPU_TO_EPU_ACK to us (*boggle*). We get an interrupt * when it sends us an ack, but by the time we process it, that flag in * the SW2 status register has been cleared by the CPU firmware. * We'll prevent that not so useful behavior by clearing the CPU's * interrupt enables for Ack IRQ's we want to process. */ cx18_sw2_irq_disable_cpu(cx, IRQ_CPU_TO_EPU_ACK | IRQ_APU_TO_EPU_ACK); /* initialize GPIO */ cx18_write_reg_expect(cx, 0x14001400, 0xc78110, 0x00001400, 0x14001400); return 0; }