| /* |
| * Copyright 2008 Advanced Micro Devices, 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, sublicense, |
| * 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 above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * 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 NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. |
| * |
| * Author: Stanislaw Skowronek |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <asm/unaligned.h> |
| |
| #define ATOM_DEBUG |
| |
| #include "atom.h" |
| #include "atom-names.h" |
| #include "atom-bits.h" |
| |
| #define ATOM_COND_ABOVE 0 |
| #define ATOM_COND_ABOVEOREQUAL 1 |
| #define ATOM_COND_ALWAYS 2 |
| #define ATOM_COND_BELOW 3 |
| #define ATOM_COND_BELOWOREQUAL 4 |
| #define ATOM_COND_EQUAL 5 |
| #define ATOM_COND_NOTEQUAL 6 |
| |
| #define ATOM_PORT_ATI 0 |
| #define ATOM_PORT_PCI 1 |
| #define ATOM_PORT_SYSIO 2 |
| |
| #define ATOM_UNIT_MICROSEC 0 |
| #define ATOM_UNIT_MILLISEC 1 |
| |
| #define PLL_INDEX 2 |
| #define PLL_DATA 3 |
| |
| typedef struct { |
| struct atom_context *ctx; |
| uint32_t *ps, *ws; |
| int ps_shift; |
| uint16_t start; |
| unsigned last_jump; |
| unsigned long last_jump_jiffies; |
| bool abort; |
| } atom_exec_context; |
| |
| int atom_debug = 0; |
| static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params); |
| int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params); |
| |
| static uint32_t atom_arg_mask[8] = |
| { 0xFFFFFFFF, 0xFFFF, 0xFFFF00, 0xFFFF0000, 0xFF, 0xFF00, 0xFF0000, |
| 0xFF000000 }; |
| static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 }; |
| |
| static int atom_dst_to_src[8][4] = { |
| /* translate destination alignment field to the source alignment encoding */ |
| {0, 0, 0, 0}, |
| {1, 2, 3, 0}, |
| {1, 2, 3, 0}, |
| {1, 2, 3, 0}, |
| {4, 5, 6, 7}, |
| {4, 5, 6, 7}, |
| {4, 5, 6, 7}, |
| {4, 5, 6, 7}, |
| }; |
| static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 }; |
| |
| static int debug_depth = 0; |
| #ifdef ATOM_DEBUG |
| static void debug_print_spaces(int n) |
| { |
| while (n--) |
| printk(" "); |
| } |
| |
| #define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0) |
| #define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0) |
| #else |
| #define DEBUG(...) do { } while (0) |
| #define SDEBUG(...) do { } while (0) |
| #endif |
| |
| static uint32_t atom_iio_execute(struct atom_context *ctx, int base, |
| uint32_t index, uint32_t data) |
| { |
| uint32_t temp = 0xCDCDCDCD; |
| while (1) |
| switch (CU8(base)) { |
| case ATOM_IIO_NOP: |
| base++; |
| break; |
| case ATOM_IIO_READ: |
| temp = ctx->card->reg_read(ctx->card, CU16(base + 1)); |
| base += 3; |
| break; |
| case ATOM_IIO_WRITE: |
| (void)ctx->card->reg_read(ctx->card, CU16(base + 1)); |
| ctx->card->reg_write(ctx->card, CU16(base + 1), temp); |
| base += 3; |
| break; |
| case ATOM_IIO_CLEAR: |
| temp &= |
| ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << |
| CU8(base + 2)); |
| base += 3; |
| break; |
| case ATOM_IIO_SET: |
| temp |= |
| (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base + |
| 2); |
| base += 3; |
| break; |
| case ATOM_IIO_MOVE_INDEX: |
| temp &= |
| ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << |
| CU8(base + 2)); |
| temp |= |
| ((index >> CU8(base + 2)) & |
| (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + |
| 3); |
| base += 4; |
| break; |
| case ATOM_IIO_MOVE_DATA: |
| temp &= |
| ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << |
| CU8(base + 2)); |
| temp |= |
| ((data >> CU8(base + 2)) & |
| (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + |
| 3); |
| base += 4; |
| break; |
| case ATOM_IIO_MOVE_ATTR: |
| temp &= |
| ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << |
| CU8(base + 2)); |
| temp |= |
| ((ctx-> |
| io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 - |
| CU8 |
| (base |
| + |
| 1)))) |
| << CU8(base + 3); |
| base += 4; |
| break; |
| case ATOM_IIO_END: |
| return temp; |
| default: |
| printk(KERN_INFO "Unknown IIO opcode.\n"); |
| return 0; |
| } |
| } |
| |
| static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr, |
| int *ptr, uint32_t *saved, int print) |
| { |
| uint32_t idx, val = 0xCDCDCDCD, align, arg; |
| struct atom_context *gctx = ctx->ctx; |
| arg = attr & 7; |
| align = (attr >> 3) & 7; |
| switch (arg) { |
| case ATOM_ARG_REG: |
| idx = U16(*ptr); |
| (*ptr) += 2; |
| if (print) |
| DEBUG("REG[0x%04X]", idx); |
| idx += gctx->reg_block; |
| switch (gctx->io_mode) { |
| case ATOM_IO_MM: |
| val = gctx->card->reg_read(gctx->card, idx); |
| break; |
| case ATOM_IO_PCI: |
| printk(KERN_INFO |
| "PCI registers are not implemented.\n"); |
| return 0; |
| case ATOM_IO_SYSIO: |
| printk(KERN_INFO |
| "SYSIO registers are not implemented.\n"); |
| return 0; |
| default: |
| if (!(gctx->io_mode & 0x80)) { |
| printk(KERN_INFO "Bad IO mode.\n"); |
| return 0; |
| } |
| if (!gctx->iio[gctx->io_mode & 0x7F]) { |
| printk(KERN_INFO |
| "Undefined indirect IO read method %d.\n", |
| gctx->io_mode & 0x7F); |
| return 0; |
| } |
| val = |
| atom_iio_execute(gctx, |
| gctx->iio[gctx->io_mode & 0x7F], |
| idx, 0); |
| } |
| break; |
| case ATOM_ARG_PS: |
| idx = U8(*ptr); |
| (*ptr)++; |
| /* get_unaligned_le32 avoids unaligned accesses from atombios |
| * tables, noticed on a DEC Alpha. */ |
| val = get_unaligned_le32((u32 *)&ctx->ps[idx]); |
| if (print) |
| DEBUG("PS[0x%02X,0x%04X]", idx, val); |
| break; |
| case ATOM_ARG_WS: |
| idx = U8(*ptr); |
| (*ptr)++; |
| if (print) |
| DEBUG("WS[0x%02X]", idx); |
| switch (idx) { |
| case ATOM_WS_QUOTIENT: |
| val = gctx->divmul[0]; |
| break; |
| case ATOM_WS_REMAINDER: |
| val = gctx->divmul[1]; |
| break; |
| case ATOM_WS_DATAPTR: |
| val = gctx->data_block; |
| break; |
| case ATOM_WS_SHIFT: |
| val = gctx->shift; |
| break; |
| case ATOM_WS_OR_MASK: |
| val = 1 << gctx->shift; |
| break; |
| case ATOM_WS_AND_MASK: |
| val = ~(1 << gctx->shift); |
| break; |
| case ATOM_WS_FB_WINDOW: |
| val = gctx->fb_base; |
| break; |
| case ATOM_WS_ATTRIBUTES: |
| val = gctx->io_attr; |
| break; |
| case ATOM_WS_REGPTR: |
| val = gctx->reg_block; |
| break; |
| default: |
| val = ctx->ws[idx]; |
| } |
| break; |
| case ATOM_ARG_ID: |
| idx = U16(*ptr); |
| (*ptr) += 2; |
| if (print) { |
| if (gctx->data_block) |
| DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block); |
| else |
| DEBUG("ID[0x%04X]", idx); |
| } |
| val = U32(idx + gctx->data_block); |
| break; |
| case ATOM_ARG_FB: |
| idx = U8(*ptr); |
| (*ptr)++; |
| val = gctx->scratch[((gctx->fb_base + idx) / 4)]; |
| if (print) |
| DEBUG("FB[0x%02X]", idx); |
| break; |
| case ATOM_ARG_IMM: |
| switch (align) { |
| case ATOM_SRC_DWORD: |
| val = U32(*ptr); |
| (*ptr) += 4; |
| if (print) |
| DEBUG("IMM 0x%08X\n", val); |
| return val; |
| case ATOM_SRC_WORD0: |
| case ATOM_SRC_WORD8: |
| case ATOM_SRC_WORD16: |
| val = U16(*ptr); |
| (*ptr) += 2; |
| if (print) |
| DEBUG("IMM 0x%04X\n", val); |
| return val; |
| case ATOM_SRC_BYTE0: |
| case ATOM_SRC_BYTE8: |
| case ATOM_SRC_BYTE16: |
| case ATOM_SRC_BYTE24: |
| val = U8(*ptr); |
| (*ptr)++; |
| if (print) |
| DEBUG("IMM 0x%02X\n", val); |
| return val; |
| } |
| return 0; |
| case ATOM_ARG_PLL: |
| idx = U8(*ptr); |
| (*ptr)++; |
| if (print) |
| DEBUG("PLL[0x%02X]", idx); |
| val = gctx->card->pll_read(gctx->card, idx); |
| break; |
| case ATOM_ARG_MC: |
| idx = U8(*ptr); |
| (*ptr)++; |
| if (print) |
| DEBUG("MC[0x%02X]", idx); |
| val = gctx->card->mc_read(gctx->card, idx); |
| break; |
| } |
| if (saved) |
| *saved = val; |
| val &= atom_arg_mask[align]; |
| val >>= atom_arg_shift[align]; |
| if (print) |
| switch (align) { |
| case ATOM_SRC_DWORD: |
| DEBUG(".[31:0] -> 0x%08X\n", val); |
| break; |
| case ATOM_SRC_WORD0: |
| DEBUG(".[15:0] -> 0x%04X\n", val); |
| break; |
| case ATOM_SRC_WORD8: |
| DEBUG(".[23:8] -> 0x%04X\n", val); |
| break; |
| case ATOM_SRC_WORD16: |
| DEBUG(".[31:16] -> 0x%04X\n", val); |
| break; |
| case ATOM_SRC_BYTE0: |
| DEBUG(".[7:0] -> 0x%02X\n", val); |
| break; |
| case ATOM_SRC_BYTE8: |
| DEBUG(".[15:8] -> 0x%02X\n", val); |
| break; |
| case ATOM_SRC_BYTE16: |
| DEBUG(".[23:16] -> 0x%02X\n", val); |
| break; |
| case ATOM_SRC_BYTE24: |
| DEBUG(".[31:24] -> 0x%02X\n", val); |
| break; |
| } |
| return val; |
| } |
| |
| static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr) |
| { |
| uint32_t align = (attr >> 3) & 7, arg = attr & 7; |
| switch (arg) { |
| case ATOM_ARG_REG: |
| case ATOM_ARG_ID: |
| (*ptr) += 2; |
| break; |
| case ATOM_ARG_PLL: |
| case ATOM_ARG_MC: |
| case ATOM_ARG_PS: |
| case ATOM_ARG_WS: |
| case ATOM_ARG_FB: |
| (*ptr)++; |
| break; |
| case ATOM_ARG_IMM: |
| switch (align) { |
| case ATOM_SRC_DWORD: |
| (*ptr) += 4; |
| return; |
| case ATOM_SRC_WORD0: |
| case ATOM_SRC_WORD8: |
| case ATOM_SRC_WORD16: |
| (*ptr) += 2; |
| return; |
| case ATOM_SRC_BYTE0: |
| case ATOM_SRC_BYTE8: |
| case ATOM_SRC_BYTE16: |
| case ATOM_SRC_BYTE24: |
| (*ptr)++; |
| return; |
| } |
| return; |
| } |
| } |
| |
| static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr) |
| { |
| return atom_get_src_int(ctx, attr, ptr, NULL, 1); |
| } |
| |
| static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr) |
| { |
| uint32_t val = 0xCDCDCDCD; |
| |
| switch (align) { |
| case ATOM_SRC_DWORD: |
| val = U32(*ptr); |
| (*ptr) += 4; |
| break; |
| case ATOM_SRC_WORD0: |
| case ATOM_SRC_WORD8: |
| case ATOM_SRC_WORD16: |
| val = U16(*ptr); |
| (*ptr) += 2; |
| break; |
| case ATOM_SRC_BYTE0: |
| case ATOM_SRC_BYTE8: |
| case ATOM_SRC_BYTE16: |
| case ATOM_SRC_BYTE24: |
| val = U8(*ptr); |
| (*ptr)++; |
| break; |
| } |
| return val; |
| } |
| |
| static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr, |
| int *ptr, uint32_t *saved, int print) |
| { |
| return atom_get_src_int(ctx, |
| arg | atom_dst_to_src[(attr >> 3) & |
| 7][(attr >> 6) & 3] << 3, |
| ptr, saved, print); |
| } |
| |
| static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr) |
| { |
| atom_skip_src_int(ctx, |
| arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & |
| 3] << 3, ptr); |
| } |
| |
| static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr, |
| int *ptr, uint32_t val, uint32_t saved) |
| { |
| uint32_t align = |
| atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val = |
| val, idx; |
| struct atom_context *gctx = ctx->ctx; |
| old_val &= atom_arg_mask[align] >> atom_arg_shift[align]; |
| val <<= atom_arg_shift[align]; |
| val &= atom_arg_mask[align]; |
| saved &= ~atom_arg_mask[align]; |
| val |= saved; |
| switch (arg) { |
| case ATOM_ARG_REG: |
| idx = U16(*ptr); |
| (*ptr) += 2; |
| DEBUG("REG[0x%04X]", idx); |
| idx += gctx->reg_block; |
| switch (gctx->io_mode) { |
| case ATOM_IO_MM: |
| if (idx == 0) |
| gctx->card->reg_write(gctx->card, idx, |
| val << 2); |
| else |
| gctx->card->reg_write(gctx->card, idx, val); |
| break; |
| case ATOM_IO_PCI: |
| printk(KERN_INFO |
| "PCI registers are not implemented.\n"); |
| return; |
| case ATOM_IO_SYSIO: |
| printk(KERN_INFO |
| "SYSIO registers are not implemented.\n"); |
| return; |
| default: |
| if (!(gctx->io_mode & 0x80)) { |
| printk(KERN_INFO "Bad IO mode.\n"); |
| return; |
| } |
| if (!gctx->iio[gctx->io_mode & 0xFF]) { |
| printk(KERN_INFO |
| "Undefined indirect IO write method %d.\n", |
| gctx->io_mode & 0x7F); |
| return; |
| } |
| atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF], |
| idx, val); |
| } |
| break; |
| case ATOM_ARG_PS: |
| idx = U8(*ptr); |
| (*ptr)++; |
| DEBUG("PS[0x%02X]", idx); |
| ctx->ps[idx] = cpu_to_le32(val); |
| break; |
| case ATOM_ARG_WS: |
| idx = U8(*ptr); |
| (*ptr)++; |
| DEBUG("WS[0x%02X]", idx); |
| switch (idx) { |
| case ATOM_WS_QUOTIENT: |
| gctx->divmul[0] = val; |
| break; |
| case ATOM_WS_REMAINDER: |
| gctx->divmul[1] = val; |
| break; |
| case ATOM_WS_DATAPTR: |
| gctx->data_block = val; |
| break; |
| case ATOM_WS_SHIFT: |
| gctx->shift = val; |
| break; |
| case ATOM_WS_OR_MASK: |
| case ATOM_WS_AND_MASK: |
| break; |
| case ATOM_WS_FB_WINDOW: |
| gctx->fb_base = val; |
| break; |
| case ATOM_WS_ATTRIBUTES: |
| gctx->io_attr = val; |
| break; |
| case ATOM_WS_REGPTR: |
| gctx->reg_block = val; |
| break; |
| default: |
| ctx->ws[idx] = val; |
| } |
| break; |
| case ATOM_ARG_FB: |
| idx = U8(*ptr); |
| (*ptr)++; |
| gctx->scratch[((gctx->fb_base + idx) / 4)] = val; |
| DEBUG("FB[0x%02X]", idx); |
| break; |
| case ATOM_ARG_PLL: |
| idx = U8(*ptr); |
| (*ptr)++; |
| DEBUG("PLL[0x%02X]", idx); |
| gctx->card->pll_write(gctx->card, idx, val); |
| break; |
| case ATOM_ARG_MC: |
| idx = U8(*ptr); |
| (*ptr)++; |
| DEBUG("MC[0x%02X]", idx); |
| gctx->card->mc_write(gctx->card, idx, val); |
| return; |
| } |
| switch (align) { |
| case ATOM_SRC_DWORD: |
| DEBUG(".[31:0] <- 0x%08X\n", old_val); |
| break; |
| case ATOM_SRC_WORD0: |
| DEBUG(".[15:0] <- 0x%04X\n", old_val); |
| break; |
| case ATOM_SRC_WORD8: |
| DEBUG(".[23:8] <- 0x%04X\n", old_val); |
| break; |
| case ATOM_SRC_WORD16: |
| DEBUG(".[31:16] <- 0x%04X\n", old_val); |
| break; |
| case ATOM_SRC_BYTE0: |
| DEBUG(".[7:0] <- 0x%02X\n", old_val); |
| break; |
| case ATOM_SRC_BYTE8: |
| DEBUG(".[15:8] <- 0x%02X\n", old_val); |
| break; |
| case ATOM_SRC_BYTE16: |
| DEBUG(".[23:16] <- 0x%02X\n", old_val); |
| break; |
| case ATOM_SRC_BYTE24: |
| DEBUG(".[31:24] <- 0x%02X\n", old_val); |
| break; |
| } |
| } |
| |
| static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t dst, src, saved; |
| int dptr = *ptr; |
| SDEBUG(" dst: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); |
| SDEBUG(" src: "); |
| src = atom_get_src(ctx, attr, ptr); |
| dst += src; |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, dst, saved); |
| } |
| |
| static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t dst, src, saved; |
| int dptr = *ptr; |
| SDEBUG(" dst: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); |
| SDEBUG(" src: "); |
| src = atom_get_src(ctx, attr, ptr); |
| dst &= src; |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, dst, saved); |
| } |
| |
| static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| printk("ATOM BIOS beeped!\n"); |
| } |
| |
| static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| int idx = U8((*ptr)++); |
| int r = 0; |
| |
| if (idx < ATOM_TABLE_NAMES_CNT) |
| SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]); |
| else |
| SDEBUG(" table: %d\n", idx); |
| if (U16(ctx->ctx->cmd_table + 4 + 2 * idx)) |
| r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift); |
| if (r) { |
| ctx->abort = true; |
| } |
| } |
| |
| static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t saved; |
| int dptr = *ptr; |
| attr &= 0x38; |
| attr |= atom_def_dst[attr >> 3] << 6; |
| atom_get_dst(ctx, arg, attr, ptr, &saved, 0); |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, 0, saved); |
| } |
| |
| static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t dst, src; |
| SDEBUG(" src1: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); |
| SDEBUG(" src2: "); |
| src = atom_get_src(ctx, attr, ptr); |
| ctx->ctx->cs_equal = (dst == src); |
| ctx->ctx->cs_above = (dst > src); |
| SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE", |
| ctx->ctx->cs_above ? "GT" : "LE"); |
| } |
| |
| static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t count = U8((*ptr)++); |
| SDEBUG(" count: %d\n", count); |
| if (arg == ATOM_UNIT_MICROSEC) |
| udelay(count); |
| else |
| schedule_timeout_uninterruptible(msecs_to_jiffies(count)); |
| } |
| |
| static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t dst, src; |
| SDEBUG(" src1: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); |
| SDEBUG(" src2: "); |
| src = atom_get_src(ctx, attr, ptr); |
| if (src != 0) { |
| ctx->ctx->divmul[0] = dst / src; |
| ctx->ctx->divmul[1] = dst % src; |
| } else { |
| ctx->ctx->divmul[0] = 0; |
| ctx->ctx->divmul[1] = 0; |
| } |
| } |
| |
| static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| /* functionally, a nop */ |
| } |
| |
| static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| int execute = 0, target = U16(*ptr); |
| unsigned long cjiffies; |
| |
| (*ptr) += 2; |
| switch (arg) { |
| case ATOM_COND_ABOVE: |
| execute = ctx->ctx->cs_above; |
| break; |
| case ATOM_COND_ABOVEOREQUAL: |
| execute = ctx->ctx->cs_above || ctx->ctx->cs_equal; |
| break; |
| case ATOM_COND_ALWAYS: |
| execute = 1; |
| break; |
| case ATOM_COND_BELOW: |
| execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal); |
| break; |
| case ATOM_COND_BELOWOREQUAL: |
| execute = !ctx->ctx->cs_above; |
| break; |
| case ATOM_COND_EQUAL: |
| execute = ctx->ctx->cs_equal; |
| break; |
| case ATOM_COND_NOTEQUAL: |
| execute = !ctx->ctx->cs_equal; |
| break; |
| } |
| if (arg != ATOM_COND_ALWAYS) |
| SDEBUG(" taken: %s\n", execute ? "yes" : "no"); |
| SDEBUG(" target: 0x%04X\n", target); |
| if (execute) { |
| if (ctx->last_jump == (ctx->start + target)) { |
| cjiffies = jiffies; |
| if (time_after(cjiffies, ctx->last_jump_jiffies)) { |
| cjiffies -= ctx->last_jump_jiffies; |
| if ((jiffies_to_msecs(cjiffies) > 1000)) { |
| DRM_ERROR("atombios stuck in loop for more than 1sec aborting\n"); |
| ctx->abort = true; |
| } |
| } else { |
| /* jiffies wrap around we will just wait a little longer */ |
| ctx->last_jump_jiffies = jiffies; |
| } |
| } else { |
| ctx->last_jump = ctx->start + target; |
| ctx->last_jump_jiffies = jiffies; |
| } |
| *ptr = ctx->start + target; |
| } |
| } |
| |
| static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t dst, src1, src2, saved; |
| int dptr = *ptr; |
| SDEBUG(" dst: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); |
| SDEBUG(" src1: "); |
| src1 = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr); |
| SDEBUG(" src2: "); |
| src2 = atom_get_src(ctx, attr, ptr); |
| dst &= src1; |
| dst |= src2; |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, dst, saved); |
| } |
| |
| static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t src, saved; |
| int dptr = *ptr; |
| if (((attr >> 3) & 7) != ATOM_SRC_DWORD) |
| atom_get_dst(ctx, arg, attr, ptr, &saved, 0); |
| else { |
| atom_skip_dst(ctx, arg, attr, ptr); |
| saved = 0xCDCDCDCD; |
| } |
| SDEBUG(" src: "); |
| src = atom_get_src(ctx, attr, ptr); |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, src, saved); |
| } |
| |
| static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t dst, src; |
| SDEBUG(" src1: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); |
| SDEBUG(" src2: "); |
| src = atom_get_src(ctx, attr, ptr); |
| ctx->ctx->divmul[0] = dst * src; |
| } |
| |
| static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| /* nothing */ |
| } |
| |
| static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t dst, src, saved; |
| int dptr = *ptr; |
| SDEBUG(" dst: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); |
| SDEBUG(" src: "); |
| src = atom_get_src(ctx, attr, ptr); |
| dst |= src; |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, dst, saved); |
| } |
| |
| static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t val = U8((*ptr)++); |
| SDEBUG("POST card output: 0x%02X\n", val); |
| } |
| |
| static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| printk(KERN_INFO "unimplemented!\n"); |
| } |
| |
| static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| printk(KERN_INFO "unimplemented!\n"); |
| } |
| |
| static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| printk(KERN_INFO "unimplemented!\n"); |
| } |
| |
| static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| int idx = U8(*ptr); |
| (*ptr)++; |
| SDEBUG(" block: %d\n", idx); |
| if (!idx) |
| ctx->ctx->data_block = 0; |
| else if (idx == 255) |
| ctx->ctx->data_block = ctx->start; |
| else |
| ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx); |
| SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block); |
| } |
| |
| static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| SDEBUG(" fb_base: "); |
| ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr); |
| } |
| |
| static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| int port; |
| switch (arg) { |
| case ATOM_PORT_ATI: |
| port = U16(*ptr); |
| if (port < ATOM_IO_NAMES_CNT) |
| SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]); |
| else |
| SDEBUG(" port: %d\n", port); |
| if (!port) |
| ctx->ctx->io_mode = ATOM_IO_MM; |
| else |
| ctx->ctx->io_mode = ATOM_IO_IIO | port; |
| (*ptr) += 2; |
| break; |
| case ATOM_PORT_PCI: |
| ctx->ctx->io_mode = ATOM_IO_PCI; |
| (*ptr)++; |
| break; |
| case ATOM_PORT_SYSIO: |
| ctx->ctx->io_mode = ATOM_IO_SYSIO; |
| (*ptr)++; |
| break; |
| } |
| } |
| |
| static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| ctx->ctx->reg_block = U16(*ptr); |
| (*ptr) += 2; |
| SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block); |
| } |
| |
| static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++), shift; |
| uint32_t saved, dst; |
| int dptr = *ptr; |
| attr &= 0x38; |
| attr |= atom_def_dst[attr >> 3] << 6; |
| SDEBUG(" dst: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); |
| shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); |
| SDEBUG(" shift: %d\n", shift); |
| dst <<= shift; |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, dst, saved); |
| } |
| |
| static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++), shift; |
| uint32_t saved, dst; |
| int dptr = *ptr; |
| attr &= 0x38; |
| attr |= atom_def_dst[attr >> 3] << 6; |
| SDEBUG(" dst: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); |
| shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); |
| SDEBUG(" shift: %d\n", shift); |
| dst >>= shift; |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, dst, saved); |
| } |
| |
| static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++), shift; |
| uint32_t saved, dst; |
| int dptr = *ptr; |
| uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; |
| SDEBUG(" dst: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); |
| /* op needs to full dst value */ |
| dst = saved; |
| shift = atom_get_src(ctx, attr, ptr); |
| SDEBUG(" shift: %d\n", shift); |
| dst <<= shift; |
| dst &= atom_arg_mask[dst_align]; |
| dst >>= atom_arg_shift[dst_align]; |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, dst, saved); |
| } |
| |
| static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++), shift; |
| uint32_t saved, dst; |
| int dptr = *ptr; |
| uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; |
| SDEBUG(" dst: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); |
| /* op needs to full dst value */ |
| dst = saved; |
| shift = atom_get_src(ctx, attr, ptr); |
| SDEBUG(" shift: %d\n", shift); |
| dst >>= shift; |
| dst &= atom_arg_mask[dst_align]; |
| dst >>= atom_arg_shift[dst_align]; |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, dst, saved); |
| } |
| |
| static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t dst, src, saved; |
| int dptr = *ptr; |
| SDEBUG(" dst: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); |
| SDEBUG(" src: "); |
| src = atom_get_src(ctx, attr, ptr); |
| dst -= src; |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, dst, saved); |
| } |
| |
| static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t src, val, target; |
| SDEBUG(" switch: "); |
| src = atom_get_src(ctx, attr, ptr); |
| while (U16(*ptr) != ATOM_CASE_END) |
| if (U8(*ptr) == ATOM_CASE_MAGIC) { |
| (*ptr)++; |
| SDEBUG(" case: "); |
| val = |
| atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM, |
| ptr); |
| target = U16(*ptr); |
| if (val == src) { |
| SDEBUG(" target: %04X\n", target); |
| *ptr = ctx->start + target; |
| return; |
| } |
| (*ptr) += 2; |
| } else { |
| printk(KERN_INFO "Bad case.\n"); |
| return; |
| } |
| (*ptr) += 2; |
| } |
| |
| static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t dst, src; |
| SDEBUG(" src1: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); |
| SDEBUG(" src2: "); |
| src = atom_get_src(ctx, attr, ptr); |
| ctx->ctx->cs_equal = ((dst & src) == 0); |
| SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE"); |
| } |
| |
| static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| uint8_t attr = U8((*ptr)++); |
| uint32_t dst, src, saved; |
| int dptr = *ptr; |
| SDEBUG(" dst: "); |
| dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); |
| SDEBUG(" src: "); |
| src = atom_get_src(ctx, attr, ptr); |
| dst ^= src; |
| SDEBUG(" dst: "); |
| atom_put_dst(ctx, arg, attr, &dptr, dst, saved); |
| } |
| |
| static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg) |
| { |
| printk(KERN_INFO "unimplemented!\n"); |
| } |
| |
| static struct { |
| void (*func) (atom_exec_context *, int *, int); |
| int arg; |
| } opcode_table[ATOM_OP_CNT] = { |
| { |
| NULL, 0}, { |
| atom_op_move, ATOM_ARG_REG}, { |
| atom_op_move, ATOM_ARG_PS}, { |
| atom_op_move, ATOM_ARG_WS}, { |
| atom_op_move, ATOM_ARG_FB}, { |
| atom_op_move, ATOM_ARG_PLL}, { |
| atom_op_move, ATOM_ARG_MC}, { |
| atom_op_and, ATOM_ARG_REG}, { |
| atom_op_and, ATOM_ARG_PS}, { |
| atom_op_and, ATOM_ARG_WS}, { |
| atom_op_and, ATOM_ARG_FB}, { |
| atom_op_and, ATOM_ARG_PLL}, { |
| atom_op_and, ATOM_ARG_MC}, { |
| atom_op_or, ATOM_ARG_REG}, { |
| atom_op_or, ATOM_ARG_PS}, { |
| atom_op_or, ATOM_ARG_WS}, { |
| atom_op_or, ATOM_ARG_FB}, { |
| atom_op_or, ATOM_ARG_PLL}, { |
| atom_op_or, ATOM_ARG_MC}, { |
| atom_op_shift_left, ATOM_ARG_REG}, { |
| atom_op_shift_left, ATOM_ARG_PS}, { |
| atom_op_shift_left, ATOM_ARG_WS}, { |
| atom_op_shift_left, ATOM_ARG_FB}, { |
| atom_op_shift_left, ATOM_ARG_PLL}, { |
| atom_op_shift_left, ATOM_ARG_MC}, { |
| atom_op_shift_right, ATOM_ARG_REG}, { |
| atom_op_shift_right, ATOM_ARG_PS}, { |
| atom_op_shift_right, ATOM_ARG_WS}, { |
| atom_op_shift_right, ATOM_ARG_FB}, { |
| atom_op_shift_right, ATOM_ARG_PLL}, { |
| atom_op_shift_right, ATOM_ARG_MC}, { |
| atom_op_mul, ATOM_ARG_REG}, { |
| atom_op_mul, ATOM_ARG_PS}, { |
| atom_op_mul, ATOM_ARG_WS}, { |
| atom_op_mul, ATOM_ARG_FB}, { |
| atom_op_mul, ATOM_ARG_PLL}, { |
| atom_op_mul, ATOM_ARG_MC}, { |
| atom_op_div, ATOM_ARG_REG}, { |
| atom_op_div, ATOM_ARG_PS}, { |
| atom_op_div, ATOM_ARG_WS}, { |
| atom_op_div, ATOM_ARG_FB}, { |
| atom_op_div, ATOM_ARG_PLL}, { |
| atom_op_div, ATOM_ARG_MC}, { |
| atom_op_add, ATOM_ARG_REG}, { |
| atom_op_add, ATOM_ARG_PS}, { |
| atom_op_add, ATOM_ARG_WS}, { |
| atom_op_add, ATOM_ARG_FB}, { |
| atom_op_add, ATOM_ARG_PLL}, { |
| atom_op_add, ATOM_ARG_MC}, { |
| atom_op_sub, ATOM_ARG_REG}, { |
| atom_op_sub, ATOM_ARG_PS}, { |
| atom_op_sub, ATOM_ARG_WS}, { |
| atom_op_sub, ATOM_ARG_FB}, { |
| atom_op_sub, ATOM_ARG_PLL}, { |
| atom_op_sub, ATOM_ARG_MC}, { |
| atom_op_setport, ATOM_PORT_ATI}, { |
| atom_op_setport, ATOM_PORT_PCI}, { |
| atom_op_setport, ATOM_PORT_SYSIO}, { |
| atom_op_setregblock, 0}, { |
| atom_op_setfbbase, 0}, { |
| atom_op_compare, ATOM_ARG_REG}, { |
| atom_op_compare, ATOM_ARG_PS}, { |
| atom_op_compare, ATOM_ARG_WS}, { |
| atom_op_compare, ATOM_ARG_FB}, { |
| atom_op_compare, ATOM_ARG_PLL}, { |
| atom_op_compare, ATOM_ARG_MC}, { |
| atom_op_switch, 0}, { |
| atom_op_jump, ATOM_COND_ALWAYS}, { |
| atom_op_jump, ATOM_COND_EQUAL}, { |
| atom_op_jump, ATOM_COND_BELOW}, { |
| atom_op_jump, ATOM_COND_ABOVE}, { |
| atom_op_jump, ATOM_COND_BELOWOREQUAL}, { |
| atom_op_jump, ATOM_COND_ABOVEOREQUAL}, { |
| atom_op_jump, ATOM_COND_NOTEQUAL}, { |
| atom_op_test, ATOM_ARG_REG}, { |
| atom_op_test, ATOM_ARG_PS}, { |
| atom_op_test, ATOM_ARG_WS}, { |
| atom_op_test, ATOM_ARG_FB}, { |
| atom_op_test, ATOM_ARG_PLL}, { |
| atom_op_test, ATOM_ARG_MC}, { |
| atom_op_delay, ATOM_UNIT_MILLISEC}, { |
| atom_op_delay, ATOM_UNIT_MICROSEC}, { |
| atom_op_calltable, 0}, { |
| atom_op_repeat, 0}, { |
| atom_op_clear, ATOM_ARG_REG}, { |
| atom_op_clear, ATOM_ARG_PS}, { |
| atom_op_clear, ATOM_ARG_WS}, { |
| atom_op_clear, ATOM_ARG_FB}, { |
| atom_op_clear, ATOM_ARG_PLL}, { |
| atom_op_clear, ATOM_ARG_MC}, { |
| atom_op_nop, 0}, { |
| atom_op_eot, 0}, { |
| atom_op_mask, ATOM_ARG_REG}, { |
| atom_op_mask, ATOM_ARG_PS}, { |
| atom_op_mask, ATOM_ARG_WS}, { |
| atom_op_mask, ATOM_ARG_FB}, { |
| atom_op_mask, ATOM_ARG_PLL}, { |
| atom_op_mask, ATOM_ARG_MC}, { |
| atom_op_postcard, 0}, { |
| atom_op_beep, 0}, { |
| atom_op_savereg, 0}, { |
| atom_op_restorereg, 0}, { |
| atom_op_setdatablock, 0}, { |
| atom_op_xor, ATOM_ARG_REG}, { |
| atom_op_xor, ATOM_ARG_PS}, { |
| atom_op_xor, ATOM_ARG_WS}, { |
| atom_op_xor, ATOM_ARG_FB}, { |
| atom_op_xor, ATOM_ARG_PLL}, { |
| atom_op_xor, ATOM_ARG_MC}, { |
| atom_op_shl, ATOM_ARG_REG}, { |
| atom_op_shl, ATOM_ARG_PS}, { |
| atom_op_shl, ATOM_ARG_WS}, { |
| atom_op_shl, ATOM_ARG_FB}, { |
| atom_op_shl, ATOM_ARG_PLL}, { |
| atom_op_shl, ATOM_ARG_MC}, { |
| atom_op_shr, ATOM_ARG_REG}, { |
| atom_op_shr, ATOM_ARG_PS}, { |
| atom_op_shr, ATOM_ARG_WS}, { |
| atom_op_shr, ATOM_ARG_FB}, { |
| atom_op_shr, ATOM_ARG_PLL}, { |
| atom_op_shr, ATOM_ARG_MC}, { |
| atom_op_debug, 0},}; |
| |
| static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params) |
| { |
| int base = CU16(ctx->cmd_table + 4 + 2 * index); |
| int len, ws, ps, ptr; |
| unsigned char op; |
| atom_exec_context ectx; |
| int ret = 0; |
| |
| if (!base) |
| return -EINVAL; |
| |
| len = CU16(base + ATOM_CT_SIZE_PTR); |
| ws = CU8(base + ATOM_CT_WS_PTR); |
| ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK; |
| ptr = base + ATOM_CT_CODE_PTR; |
| |
| SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps); |
| |
| ectx.ctx = ctx; |
| ectx.ps_shift = ps / 4; |
| ectx.start = base; |
| ectx.ps = params; |
| ectx.abort = false; |
| ectx.last_jump = 0; |
| if (ws) |
| ectx.ws = kzalloc(4 * ws, GFP_KERNEL); |
| else |
| ectx.ws = NULL; |
| |
| debug_depth++; |
| while (1) { |
| op = CU8(ptr++); |
| if (op < ATOM_OP_NAMES_CNT) |
| SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1); |
| else |
| SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1); |
| if (ectx.abort) { |
| DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n", |
| base, len, ws, ps, ptr - 1); |
| ret = -EINVAL; |
| goto free; |
| } |
| |
| if (op < ATOM_OP_CNT && op > 0) |
| opcode_table[op].func(&ectx, &ptr, |
| opcode_table[op].arg); |
| else |
| break; |
| |
| if (op == ATOM_OP_EOT) |
| break; |
| } |
| debug_depth--; |
| SDEBUG("<<\n"); |
| |
| free: |
| if (ws) |
| kfree(ectx.ws); |
| return ret; |
| } |
| |
| int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) |
| { |
| int r; |
| |
| mutex_lock(&ctx->mutex); |
| /* reset reg block */ |
| ctx->reg_block = 0; |
| /* reset fb window */ |
| ctx->fb_base = 0; |
| /* reset io mode */ |
| ctx->io_mode = ATOM_IO_MM; |
| r = atom_execute_table_locked(ctx, index, params); |
| mutex_unlock(&ctx->mutex); |
| return r; |
| } |
| |
| static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 }; |
| |
| static void atom_index_iio(struct atom_context *ctx, int base) |
| { |
| ctx->iio = kzalloc(2 * 256, GFP_KERNEL); |
| while (CU8(base) == ATOM_IIO_START) { |
| ctx->iio[CU8(base + 1)] = base + 2; |
| base += 2; |
| while (CU8(base) != ATOM_IIO_END) |
| base += atom_iio_len[CU8(base)]; |
| base += 3; |
| } |
| } |
| |
| struct atom_context *atom_parse(struct card_info *card, void *bios) |
| { |
| int base; |
| struct atom_context *ctx = |
| kzalloc(sizeof(struct atom_context), GFP_KERNEL); |
| char *str; |
| char name[512]; |
| int i; |
| |
| ctx->card = card; |
| ctx->bios = bios; |
| |
| if (CU16(0) != ATOM_BIOS_MAGIC) { |
| printk(KERN_INFO "Invalid BIOS magic.\n"); |
| kfree(ctx); |
| return NULL; |
| } |
| if (strncmp |
| (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC, |
| strlen(ATOM_ATI_MAGIC))) { |
| printk(KERN_INFO "Invalid ATI magic.\n"); |
| kfree(ctx); |
| return NULL; |
| } |
| |
| base = CU16(ATOM_ROM_TABLE_PTR); |
| if (strncmp |
| (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC, |
| strlen(ATOM_ROM_MAGIC))) { |
| printk(KERN_INFO "Invalid ATOM magic.\n"); |
| kfree(ctx); |
| return NULL; |
| } |
| |
| ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR); |
| ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR); |
| atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4); |
| |
| str = CSTR(CU16(base + ATOM_ROM_MSG_PTR)); |
| while (*str && ((*str == '\n') || (*str == '\r'))) |
| str++; |
| /* name string isn't always 0 terminated */ |
| for (i = 0; i < 511; i++) { |
| name[i] = str[i]; |
| if (name[i] < '.' || name[i] > 'z') { |
| name[i] = 0; |
| break; |
| } |
| } |
| printk(KERN_INFO "ATOM BIOS: %s\n", name); |
| |
| return ctx; |
| } |
| |
| int atom_asic_init(struct atom_context *ctx) |
| { |
| int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR); |
| uint32_t ps[16]; |
| memset(ps, 0, 64); |
| |
| ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR)); |
| ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR)); |
| if (!ps[0] || !ps[1]) |
| return 1; |
| |
| if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT)) |
| return 1; |
| return atom_execute_table(ctx, ATOM_CMD_INIT, ps); |
| } |
| |
| void atom_destroy(struct atom_context *ctx) |
| { |
| if (ctx->iio) |
| kfree(ctx->iio); |
| kfree(ctx); |
| } |
| |
| bool atom_parse_data_header(struct atom_context *ctx, int index, |
| uint16_t * size, uint8_t * frev, uint8_t * crev, |
| uint16_t * data_start) |
| { |
| int offset = index * 2 + 4; |
| int idx = CU16(ctx->data_table + offset); |
| u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4); |
| |
| if (!mdt[index]) |
| return false; |
| |
| if (size) |
| *size = CU16(idx); |
| if (frev) |
| *frev = CU8(idx + 2); |
| if (crev) |
| *crev = CU8(idx + 3); |
| *data_start = idx; |
| return true; |
| } |
| |
| bool atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev, |
| uint8_t * crev) |
| { |
| int offset = index * 2 + 4; |
| int idx = CU16(ctx->cmd_table + offset); |
| u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4); |
| |
| if (!mct[index]) |
| return false; |
| |
| if (frev) |
| *frev = CU8(idx + 2); |
| if (crev) |
| *crev = CU8(idx + 3); |
| return true; |
| } |
| |
| int atom_allocate_fb_scratch(struct atom_context *ctx) |
| { |
| int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware); |
| uint16_t data_offset; |
| int usage_bytes = 0; |
| struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage; |
| |
| if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) { |
| firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset); |
| |
| DRM_DEBUG("atom firmware requested %08x %dkb\n", |
| firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware, |
| firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb); |
| |
| usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024; |
| } |
| if (usage_bytes == 0) |
| usage_bytes = 20 * 1024; |
| /* allocate some scratch memory */ |
| ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); |
| if (!ctx->scratch) |
| return -ENOMEM; |
| return 0; |
| } |