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path: root/drivers/gpu/drm/radeon/si_smc.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/si_smc.c')
-rw-r--r--drivers/gpu/drm/radeon/si_smc.c284
1 files changed, 284 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/si_smc.c b/drivers/gpu/drm/radeon/si_smc.c
new file mode 100644
index 000000000000..5f524c0a541e
--- /dev/null
+++ b/drivers/gpu/drm/radeon/si_smc.c
@@ -0,0 +1,284 @@
+/*
+ * Copyright 2011 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.
+ *
+ * Authors: Alex Deucher
+ */
+
+#include <linux/firmware.h>
+#include "drmP.h"
+#include "radeon.h"
+#include "sid.h"
+#include "ppsmc.h"
+#include "radeon_ucode.h"
+
+int si_set_smc_sram_address(struct radeon_device *rdev,
+ u32 smc_address, u32 limit)
+{
+ if (smc_address & 3)
+ return -EINVAL;
+ if ((smc_address + 3) > limit)
+ return -EINVAL;
+
+ WREG32(SMC_IND_INDEX_0, smc_address);
+ WREG32_P(SMC_IND_ACCESS_CNTL, 0, ~AUTO_INCREMENT_IND_0);
+
+ return 0;
+}
+
+int si_copy_bytes_to_smc(struct radeon_device *rdev,
+ u32 smc_start_address,
+ const u8 *src, u32 byte_count, u32 limit)
+{
+ int ret;
+ u32 data, original_data, addr, extra_shift;
+
+ if (smc_start_address & 3)
+ return -EINVAL;
+ if ((smc_start_address + byte_count) > limit)
+ return -EINVAL;
+
+ addr = smc_start_address;
+
+ while (byte_count >= 4) {
+ /* SMC address space is BE */
+ data = (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | src[3];
+
+ ret = si_set_smc_sram_address(rdev, addr, limit);
+ if (ret)
+ return ret;
+
+ WREG32(SMC_IND_DATA_0, data);
+
+ src += 4;
+ byte_count -= 4;
+ addr += 4;
+ }
+
+ /* RMW for the final bytes */
+ if (byte_count > 0) {
+ data = 0;
+
+ ret = si_set_smc_sram_address(rdev, addr, limit);
+ if (ret)
+ return ret;
+
+ original_data = RREG32(SMC_IND_DATA_0);
+
+ extra_shift = 8 * (4 - byte_count);
+
+ while (byte_count > 0) {
+ /* SMC address space is BE */
+ data = (data << 8) + *src++;
+ byte_count--;
+ }
+
+ data <<= extra_shift;
+
+ data |= (original_data & ~((~0UL) << extra_shift));
+
+ ret = si_set_smc_sram_address(rdev, addr, limit);
+ if (ret)
+ return ret;
+
+ WREG32(SMC_IND_DATA_0, data);
+ }
+ return 0;
+}
+
+void si_start_smc(struct radeon_device *rdev)
+{
+ u32 tmp = RREG32_SMC(SMC_SYSCON_RESET_CNTL);
+
+ tmp &= ~RST_REG;
+
+ WREG32_SMC(SMC_SYSCON_RESET_CNTL, tmp);
+}
+
+void si_reset_smc(struct radeon_device *rdev)
+{
+ u32 tmp;
+
+ RREG32(CB_CGTT_SCLK_CTRL);
+ RREG32(CB_CGTT_SCLK_CTRL);
+ RREG32(CB_CGTT_SCLK_CTRL);
+ RREG32(CB_CGTT_SCLK_CTRL);
+
+ tmp = RREG32_SMC(SMC_SYSCON_RESET_CNTL);
+ tmp |= RST_REG;
+ WREG32_SMC(SMC_SYSCON_RESET_CNTL, tmp);
+}
+
+int si_program_jump_on_start(struct radeon_device *rdev)
+{
+ static u8 data[] = { 0x0E, 0x00, 0x40, 0x40 };
+
+ return si_copy_bytes_to_smc(rdev, 0x0, data, 4, sizeof(data)+1);
+}
+
+void si_stop_smc_clock(struct radeon_device *rdev)
+{
+ u32 tmp = RREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0);
+
+ tmp |= CK_DISABLE;
+
+ WREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0, tmp);
+}
+
+void si_start_smc_clock(struct radeon_device *rdev)
+{
+ u32 tmp = RREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0);
+
+ tmp &= ~CK_DISABLE;
+
+ WREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0, tmp);
+}
+
+bool si_is_smc_running(struct radeon_device *rdev)
+{
+ u32 rst = RREG32_SMC(SMC_SYSCON_RESET_CNTL);
+ u32 clk = RREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0);
+
+ if (!(rst & RST_REG) && !(clk & CK_DISABLE))
+ return true;
+
+ return false;
+}
+
+PPSMC_Result si_send_msg_to_smc(struct radeon_device *rdev, PPSMC_Msg msg)
+{
+ u32 tmp;
+ int i;
+
+ if (!si_is_smc_running(rdev))
+ return PPSMC_Result_Failed;
+
+ WREG32(SMC_MESSAGE_0, msg);
+
+ for (i = 0; i < rdev->usec_timeout; i++) {
+ tmp = RREG32(SMC_RESP_0);
+ if (tmp != 0)
+ break;
+ udelay(1);
+ }
+ tmp = RREG32(SMC_RESP_0);
+
+ return (PPSMC_Result)tmp;
+}
+
+PPSMC_Result si_wait_for_smc_inactive(struct radeon_device *rdev)
+{
+ u32 tmp;
+ int i;
+
+ if (!si_is_smc_running(rdev))
+ return PPSMC_Result_OK;
+
+ for (i = 0; i < rdev->usec_timeout; i++) {
+ tmp = RREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0);
+ if ((tmp & CKEN) == 0)
+ break;
+ udelay(1);
+ }
+
+ return PPSMC_Result_OK;
+}
+
+int si_load_smc_ucode(struct radeon_device *rdev, u32 limit)
+{
+ u32 ucode_start_address;
+ u32 ucode_size;
+ const u8 *src;
+ u32 data;
+
+ if (!rdev->smc_fw)
+ return -EINVAL;
+
+ switch (rdev->family) {
+ case CHIP_TAHITI:
+ ucode_start_address = TAHITI_SMC_UCODE_START;
+ ucode_size = TAHITI_SMC_UCODE_SIZE;
+ break;
+ case CHIP_PITCAIRN:
+ ucode_start_address = PITCAIRN_SMC_UCODE_START;
+ ucode_size = PITCAIRN_SMC_UCODE_SIZE;
+ break;
+ case CHIP_VERDE:
+ ucode_start_address = VERDE_SMC_UCODE_START;
+ ucode_size = VERDE_SMC_UCODE_SIZE;
+ break;
+ case CHIP_OLAND:
+ ucode_start_address = OLAND_SMC_UCODE_START;
+ ucode_size = OLAND_SMC_UCODE_SIZE;
+ break;
+ case CHIP_HAINAN:
+ ucode_start_address = HAINAN_SMC_UCODE_START;
+ ucode_size = HAINAN_SMC_UCODE_SIZE;
+ break;
+ default:
+ DRM_ERROR("unknown asic in smc ucode loader\n");
+ BUG();
+ }
+
+ if (ucode_size & 3)
+ return -EINVAL;
+
+ src = (const u8 *)rdev->smc_fw->data;
+ WREG32(SMC_IND_INDEX_0, ucode_start_address);
+ WREG32_P(SMC_IND_ACCESS_CNTL, AUTO_INCREMENT_IND_0, ~AUTO_INCREMENT_IND_0);
+ while (ucode_size >= 4) {
+ /* SMC address space is BE */
+ data = (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | src[3];
+
+ WREG32(SMC_IND_DATA_0, data);
+
+ src += 4;
+ ucode_size -= 4;
+ }
+ WREG32_P(SMC_IND_ACCESS_CNTL, 0, ~AUTO_INCREMENT_IND_0);
+
+ return 0;
+}
+
+int si_read_smc_sram_dword(struct radeon_device *rdev, u32 smc_address,
+ u32 *value, u32 limit)
+{
+ int ret;
+
+ ret = si_set_smc_sram_address(rdev, smc_address, limit);
+ if (ret)
+ return ret;
+
+ *value = RREG32(SMC_IND_DATA_0);
+ return 0;
+}
+
+int si_write_smc_sram_dword(struct radeon_device *rdev, u32 smc_address,
+ u32 value, u32 limit)
+{
+ int ret;
+
+ ret = si_set_smc_sram_address(rdev, smc_address, limit);
+ if (ret)
+ return ret;
+
+ WREG32(SMC_IND_DATA_0, value);
+ return 0;
+}