diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/gpu/drm/radeon/atom.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/gpu/drm/radeon/atom.c | 1406 |
1 files changed, 0 insertions, 1406 deletions
diff --git a/ANDROID_3.4.5/drivers/gpu/drm/radeon/atom.c b/ANDROID_3.4.5/drivers/gpu/drm/radeon/atom.c deleted file mode 100644 index 5ce9bf51..00000000 --- a/ANDROID_3.4.5/drivers/gpu/drm/radeon/atom.c +++ /dev/null @@ -1,1406 +0,0 @@ -/* - * 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" -#include "radeon.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) -{ - struct radeon_device *rdev = ctx->card->dev->dev_private; - uint32_t temp = 0xCDCDCDCD; - - while (1) - switch (CU8(base)) { - case ATOM_IIO_NOP: - base++; - break; - case ATOM_IIO_READ: - temp = ctx->card->ioreg_read(ctx->card, CU16(base + 1)); - base += 3; - break; - case ATOM_IIO_WRITE: - if (rdev->family == CHIP_RV515) - (void)ctx->card->ioreg_read(ctx->card, CU16(base + 1)); - ctx->card->ioreg_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 + 3)); - 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 + 3)); - 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 + 3)); - 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)++; - if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) { - DRM_ERROR("ATOM: fb read beyond scratch region: %d vs. %d\n", - gctx->fb_base + (idx * 4), gctx->scratch_size_bytes); - val = 0; - } else - val = gctx->scratch[(gctx->fb_base / 4) + idx]; - 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)++; - if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) { - DRM_ERROR("ATOM: fb write beyond scratch region: %d vs. %d\n", - gctx->fb_base + (idx * 4), gctx->scratch_size_bytes); - } else - gctx->scratch[(gctx->fb_base / 4) + idx] = 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) -{ - unsigned count = U8((*ptr)++); - SDEBUG(" count: %d\n", count); - if (arg == ATOM_UNIT_MICROSEC) - udelay(count); - else if (!drm_can_sleep()) - mdelay(count); - else - msleep(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) > 5000)) { - DRM_ERROR("atombios stuck in loop for more than 5secs 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, mask, src, saved; - int dptr = *ptr; - SDEBUG(" dst: "); - dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); - mask = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr); - SDEBUG(" mask: 0x%08x", mask); - SDEBUG(" src: "); - src = atom_get_src(ctx, attr, ptr); - dst &= mask; - dst |= src; - 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; - - if (!ctx) - return NULL; - - 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) -{ - struct radeon_device *rdev = ctx->card->dev->dev_private; - int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR); - uint32_t ps[16]; - int ret; - - 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; - ret = atom_execute_table(ctx, ATOM_CMD_INIT, ps); - if (ret) - return ret; - - memset(ps, 0, 64); - - if (rdev->family < CHIP_R600) { - if (CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_SPDFANCNTL)) - atom_execute_table(ctx, ATOM_CMD_SPDFANCNTL, ps); - } - return ret; -} - -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; - } - ctx->scratch_size_bytes = 0; - if (usage_bytes == 0) - usage_bytes = 20 * 1024; - /* allocate some scratch memory */ - ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); - if (!ctx->scratch) - return -ENOMEM; - ctx->scratch_size_bytes = usage_bytes; - return 0; -} |