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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/radeon/ci_smc.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/radeon/ci_smc.c')
-rw-r--r--drivers/gpu/drm/radeon/ci_smc.c274
1 files changed, 274 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/ci_smc.c b/drivers/gpu/drm/radeon/ci_smc.c
new file mode 100644
index 000000000..f4a1ba567
--- /dev/null
+++ b/drivers/gpu/drm/radeon/ci_smc.c
@@ -0,0 +1,274 @@
+/*
+ * 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 "radeon.h"
+#include "cikd.h"
+#include "ppsmc.h"
+#include "radeon_ucode.h"
+#include "ci_dpm.h"
+
+static int ci_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 ci_copy_bytes_to_smc(struct radeon_device *rdev,
+ u32 smc_start_address,
+ const u8 *src, u32 byte_count, u32 limit)
+{
+ unsigned long flags;
+ u32 data, original_data;
+ u32 addr;
+ u32 extra_shift;
+ int ret = 0;
+
+ if (smc_start_address & 3)
+ return -EINVAL;
+ if ((smc_start_address + byte_count) > limit)
+ return -EINVAL;
+
+ addr = smc_start_address;
+
+ spin_lock_irqsave(&rdev->smc_idx_lock, flags);
+ while (byte_count >= 4) {
+ /* SMC address space is BE */
+ data = (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | src[3];
+
+ ret = ci_set_smc_sram_address(rdev, addr, limit);
+ if (ret)
+ goto done;
+
+ 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 = ci_set_smc_sram_address(rdev, addr, limit);
+ if (ret)
+ goto done;
+
+ original_data = RREG32(SMC_IND_DATA_0);
+
+ extra_shift = 8 * (4 - byte_count);
+
+ while (byte_count > 0) {
+ data = (data << 8) + *src++;
+ byte_count--;
+ }
+
+ data <<= extra_shift;
+
+ data |= (original_data & ~((~0UL) << extra_shift));
+
+ ret = ci_set_smc_sram_address(rdev, addr, limit);
+ if (ret)
+ goto done;
+
+ WREG32(SMC_IND_DATA_0, data);
+ }
+
+done:
+ spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);
+
+ return ret;
+}
+
+void ci_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 ci_reset_smc(struct radeon_device *rdev)
+{
+ u32 tmp = RREG32_SMC(SMC_SYSCON_RESET_CNTL);
+
+ tmp |= RST_REG;
+ WREG32_SMC(SMC_SYSCON_RESET_CNTL, tmp);
+}
+
+int ci_program_jump_on_start(struct radeon_device *rdev)
+{
+ static const u8 data[] = { 0xE0, 0x00, 0x80, 0x40 };
+
+ return ci_copy_bytes_to_smc(rdev, 0x0, data, 4, sizeof(data)+1);
+}
+
+void ci_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 ci_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 ci_is_smc_running(struct radeon_device *rdev)
+{
+ u32 clk = RREG32_SMC(SMC_SYSCON_CLOCK_CNTL_0);
+ u32 pc_c = RREG32_SMC(SMC_PC_C);
+
+ if (!(clk & CK_DISABLE) && (0x20100 <= pc_c))
+ return true;
+
+ return false;
+}
+
+#if 0
+PPSMC_Result ci_wait_for_smc_inactive(struct radeon_device *rdev)
+{
+ u32 tmp;
+ int i;
+
+ if (!ci_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;
+}
+#endif
+
+int ci_load_smc_ucode(struct radeon_device *rdev, u32 limit)
+{
+ unsigned long flags;
+ u32 ucode_start_address;
+ u32 ucode_size;
+ const u8 *src;
+ u32 data;
+
+ if (!rdev->smc_fw)
+ return -EINVAL;
+
+ if (rdev->new_fw) {
+ const struct smc_firmware_header_v1_0 *hdr =
+ (const struct smc_firmware_header_v1_0 *)rdev->smc_fw->data;
+
+ radeon_ucode_print_smc_hdr(&hdr->header);
+
+ ucode_start_address = le32_to_cpu(hdr->ucode_start_addr);
+ ucode_size = le32_to_cpu(hdr->header.ucode_size_bytes);
+ src = (const u8 *)
+ (rdev->smc_fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
+ } else {
+ switch (rdev->family) {
+ case CHIP_BONAIRE:
+ ucode_start_address = BONAIRE_SMC_UCODE_START;
+ ucode_size = BONAIRE_SMC_UCODE_SIZE;
+ break;
+ case CHIP_HAWAII:
+ ucode_start_address = HAWAII_SMC_UCODE_START;
+ ucode_size = HAWAII_SMC_UCODE_SIZE;
+ break;
+ default:
+ DRM_ERROR("unknown asic in smc ucode loader\n");
+ BUG();
+ }
+
+ src = (const u8 *)rdev->smc_fw->data;
+ }
+
+ if (ucode_size & 3)
+ return -EINVAL;
+
+ spin_lock_irqsave(&rdev->smc_idx_lock, flags);
+ 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);
+ spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);
+
+ return 0;
+}
+
+int ci_read_smc_sram_dword(struct radeon_device *rdev,
+ u32 smc_address, u32 *value, u32 limit)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&rdev->smc_idx_lock, flags);
+ ret = ci_set_smc_sram_address(rdev, smc_address, limit);
+ if (ret == 0)
+ *value = RREG32(SMC_IND_DATA_0);
+ spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);
+
+ return ret;
+}
+
+int ci_write_smc_sram_dword(struct radeon_device *rdev,
+ u32 smc_address, u32 value, u32 limit)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&rdev->smc_idx_lock, flags);
+ ret = ci_set_smc_sram_address(rdev, smc_address, limit);
+ if (ret == 0)
+ WREG32(SMC_IND_DATA_0, value);
+ spin_unlock_irqrestore(&rdev->smc_idx_lock, flags);
+
+ return ret;
+}