diff options
Diffstat (limited to 'drivers/gpu/drm/imagination/pvr_fw_startstop.c')
| -rw-r--r-- | drivers/gpu/drm/imagination/pvr_fw_startstop.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imagination/pvr_fw_startstop.c b/drivers/gpu/drm/imagination/pvr_fw_startstop.c new file mode 100644 index 000000000..36cec227c --- /dev/null +++ b/drivers/gpu/drm/imagination/pvr_fw_startstop.c @@ -0,0 +1,306 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/* Copyright (c) 2023 Imagination Technologies Ltd. */ + +#include "pvr_device.h" +#include "pvr_fw.h" +#include "pvr_fw_meta.h" +#include "pvr_fw_startstop.h" +#include "pvr_rogue_cr_defs.h" +#include "pvr_rogue_meta.h" +#include "pvr_vm.h" + +#include <linux/compiler.h> +#include <linux/delay.h> +#include <linux/ktime.h> +#include <linux/types.h> + +#define POLL_TIMEOUT_USEC 1000000 + +static void +rogue_axi_ace_list_init(struct pvr_device *pvr_dev) +{ + /* Setup AXI-ACE config. Set everything to outer cache. */ + u64 reg_val = + (3U << ROGUE_CR_AXI_ACE_LITE_CONFIGURATION_AWDOMAIN_NON_SNOOPING_SHIFT) | + (3U << ROGUE_CR_AXI_ACE_LITE_CONFIGURATION_ARDOMAIN_NON_SNOOPING_SHIFT) | + (2U << ROGUE_CR_AXI_ACE_LITE_CONFIGURATION_ARDOMAIN_CACHE_MAINTENANCE_SHIFT) | + (2U << ROGUE_CR_AXI_ACE_LITE_CONFIGURATION_AWDOMAIN_COHERENT_SHIFT) | + (2U << ROGUE_CR_AXI_ACE_LITE_CONFIGURATION_ARDOMAIN_COHERENT_SHIFT) | + (2U << ROGUE_CR_AXI_ACE_LITE_CONFIGURATION_AWCACHE_COHERENT_SHIFT) | + (2U << ROGUE_CR_AXI_ACE_LITE_CONFIGURATION_ARCACHE_COHERENT_SHIFT) | + (2U << ROGUE_CR_AXI_ACE_LITE_CONFIGURATION_ARCACHE_CACHE_MAINTENANCE_SHIFT); + + pvr_cr_write64(pvr_dev, ROGUE_CR_AXI_ACE_LITE_CONFIGURATION, reg_val); +} + +static void +rogue_bif_init(struct pvr_device *pvr_dev) +{ + dma_addr_t pc_dma_addr; + u64 pc_addr; + + /* Acquire the address of the Kernel Page Catalogue. */ + pc_dma_addr = pvr_vm_get_page_table_root_addr(pvr_dev->kernel_vm_ctx); + + /* Write the kernel catalogue base. */ + pc_addr = ((((u64)pc_dma_addr >> ROGUE_CR_BIF_CAT_BASE0_ADDR_ALIGNSHIFT) + << ROGUE_CR_BIF_CAT_BASE0_ADDR_SHIFT) & + ~ROGUE_CR_BIF_CAT_BASE0_ADDR_CLRMSK); + + pvr_cr_write64(pvr_dev, BIF_CAT_BASEX(MMU_CONTEXT_MAPPING_FWPRIV), + pc_addr); +} + +static int +rogue_slc_init(struct pvr_device *pvr_dev) +{ + u16 slc_cache_line_size_bits; + u32 reg_val; + int err; + + /* + * SLC Misc control. + * + * Note: This is a 64bit register and we set only the lower 32bits + * leaving the top 32bits (ROGUE_CR_SLC_CTRL_MISC_SCRAMBLE_BITS) + * unchanged from the HW default. + */ + reg_val = (pvr_cr_read32(pvr_dev, ROGUE_CR_SLC_CTRL_MISC) & + ROGUE_CR_SLC_CTRL_MISC_ENABLE_PSG_HAZARD_CHECK_EN) | + ROGUE_CR_SLC_CTRL_MISC_ADDR_DECODE_MODE_PVR_HASH1; + + err = PVR_FEATURE_VALUE(pvr_dev, slc_cache_line_size_bits, &slc_cache_line_size_bits); + if (err) + return err; + + /* Bypass burst combiner if SLC line size is smaller than 1024 bits. */ + if (slc_cache_line_size_bits < 1024) + reg_val |= ROGUE_CR_SLC_CTRL_MISC_BYPASS_BURST_COMBINER_EN; + + if (PVR_HAS_QUIRK(pvr_dev, 71242) && !PVR_HAS_FEATURE(pvr_dev, gpu_multicore_support)) + reg_val |= ROGUE_CR_SLC_CTRL_MISC_LAZYWB_OVERRIDE_EN; + + pvr_cr_write32(pvr_dev, ROGUE_CR_SLC_CTRL_MISC, reg_val); + + return 0; +} + +/** + * pvr_fw_start() - Start FW processor and boot firmware + * @pvr_dev: Target PowerVR device. + * + * Returns: + * * 0 on success, or + * * Any error returned by rogue_slc_init(). + */ +int +pvr_fw_start(struct pvr_device *pvr_dev) +{ + bool has_reset2 = PVR_HAS_FEATURE(pvr_dev, xe_tpu2); + u64 soft_reset_mask; + int err; + + if (PVR_HAS_FEATURE(pvr_dev, pbe2_in_xe)) + soft_reset_mask = ROGUE_CR_SOFT_RESET__PBE2_XE__MASKFULL; + else + soft_reset_mask = ROGUE_CR_SOFT_RESET_MASKFULL; + + if (PVR_HAS_FEATURE(pvr_dev, sys_bus_secure_reset)) { + /* + * Disable the default sys_bus_secure protection to perform + * minimal setup. + */ + pvr_cr_write32(pvr_dev, ROGUE_CR_SYS_BUS_SECURE, 0); + (void)pvr_cr_read32(pvr_dev, ROGUE_CR_SYS_BUS_SECURE); /* Fence write */ + } + + /* Set Rogue in soft-reset. */ + pvr_cr_write64(pvr_dev, ROGUE_CR_SOFT_RESET, soft_reset_mask); + if (has_reset2) + pvr_cr_write64(pvr_dev, ROGUE_CR_SOFT_RESET2, ROGUE_CR_SOFT_RESET2_MASKFULL); + + /* Read soft-reset to fence previous write in order to clear the SOCIF pipeline. */ + (void)pvr_cr_read64(pvr_dev, ROGUE_CR_SOFT_RESET); + if (has_reset2) + (void)pvr_cr_read64(pvr_dev, ROGUE_CR_SOFT_RESET2); + + /* Take Rascal and Dust out of reset. */ + pvr_cr_write64(pvr_dev, ROGUE_CR_SOFT_RESET, + soft_reset_mask ^ ROGUE_CR_SOFT_RESET_RASCALDUSTS_EN); + if (has_reset2) + pvr_cr_write64(pvr_dev, ROGUE_CR_SOFT_RESET2, 0); + + (void)pvr_cr_read64(pvr_dev, ROGUE_CR_SOFT_RESET); + if (has_reset2) + (void)pvr_cr_read64(pvr_dev, ROGUE_CR_SOFT_RESET2); + + /* Take everything out of reset but the FW processor. */ + pvr_cr_write64(pvr_dev, ROGUE_CR_SOFT_RESET, ROGUE_CR_SOFT_RESET_GARTEN_EN); + if (has_reset2) + pvr_cr_write64(pvr_dev, ROGUE_CR_SOFT_RESET2, 0); + + (void)pvr_cr_read64(pvr_dev, ROGUE_CR_SOFT_RESET); + if (has_reset2) + (void)pvr_cr_read64(pvr_dev, ROGUE_CR_SOFT_RESET2); + + err = rogue_slc_init(pvr_dev); + if (err) + goto err_reset; + + /* Initialise Firmware wrapper. */ + pvr_dev->fw_dev.defs->wrapper_init(pvr_dev); + + /* We must init the AXI-ACE interface before first BIF transaction. */ + rogue_axi_ace_list_init(pvr_dev); + + if (pvr_dev->fw_dev.processor_type != PVR_FW_PROCESSOR_TYPE_MIPS) { + /* Initialise BIF. */ + rogue_bif_init(pvr_dev); + } + + /* Need to wait for at least 16 cycles before taking the FW processor out of reset ... */ + udelay(3); + + pvr_cr_write64(pvr_dev, ROGUE_CR_SOFT_RESET, 0x0); + (void)pvr_cr_read64(pvr_dev, ROGUE_CR_SOFT_RESET); + + /* ... and afterwards. */ + udelay(3); + + return 0; + +err_reset: + /* Put everything back into soft-reset. */ + pvr_cr_write64(pvr_dev, ROGUE_CR_SOFT_RESET, soft_reset_mask); + + return err; +} + +/** + * pvr_fw_stop() - Stop FW processor + * @pvr_dev: Target PowerVR device. + * + * Returns: + * * 0 on success, or + * * Any error returned by pvr_cr_poll_reg32(). + */ +int +pvr_fw_stop(struct pvr_device *pvr_dev) +{ + const u32 sidekick_idle_mask = ROGUE_CR_SIDEKICK_IDLE_MASKFULL & + ~(ROGUE_CR_SIDEKICK_IDLE_GARTEN_EN | + ROGUE_CR_SIDEKICK_IDLE_SOCIF_EN | + ROGUE_CR_SIDEKICK_IDLE_HOSTIF_EN); + bool skip_garten_idle = false; + u32 reg_value; + int err; + + /* + * Wait for Sidekick/Jones to signal IDLE except for the Garten Wrapper. + * For cores with the LAYOUT_MARS feature, SIDEKICK would have been + * powered down by the FW. + */ + err = pvr_cr_poll_reg32(pvr_dev, ROGUE_CR_SIDEKICK_IDLE, sidekick_idle_mask, + sidekick_idle_mask, POLL_TIMEOUT_USEC); + if (err) + return err; + + /* Unset MTS DM association with threads. */ + pvr_cr_write32(pvr_dev, ROGUE_CR_MTS_INTCTX_THREAD0_DM_ASSOC, + ROGUE_CR_MTS_INTCTX_THREAD0_DM_ASSOC_MASKFULL & + ROGUE_CR_MTS_INTCTX_THREAD0_DM_ASSOC_DM_ASSOC_CLRMSK); + pvr_cr_write32(pvr_dev, ROGUE_CR_MTS_BGCTX_THREAD0_DM_ASSOC, + ROGUE_CR_MTS_BGCTX_THREAD0_DM_ASSOC_MASKFULL & + ROGUE_CR_MTS_BGCTX_THREAD0_DM_ASSOC_DM_ASSOC_CLRMSK); + pvr_cr_write32(pvr_dev, ROGUE_CR_MTS_INTCTX_THREAD1_DM_ASSOC, + ROGUE_CR_MTS_INTCTX_THREAD1_DM_ASSOC_MASKFULL & + ROGUE_CR_MTS_INTCTX_THREAD1_DM_ASSOC_DM_ASSOC_CLRMSK); + pvr_cr_write32(pvr_dev, ROGUE_CR_MTS_BGCTX_THREAD1_DM_ASSOC, + ROGUE_CR_MTS_BGCTX_THREAD1_DM_ASSOC_MASKFULL & + ROGUE_CR_MTS_BGCTX_THREAD1_DM_ASSOC_DM_ASSOC_CLRMSK); + + /* Extra Idle checks. */ + err = pvr_cr_poll_reg32(pvr_dev, ROGUE_CR_BIF_STATUS_MMU, 0, + ROGUE_CR_BIF_STATUS_MMU_MASKFULL, + POLL_TIMEOUT_USEC); + if (err) + return err; + + err = pvr_cr_poll_reg32(pvr_dev, ROGUE_CR_BIFPM_STATUS_MMU, 0, + ROGUE_CR_BIFPM_STATUS_MMU_MASKFULL, + POLL_TIMEOUT_USEC); + if (err) + return err; + + if (!PVR_HAS_FEATURE(pvr_dev, xt_top_infrastructure)) { + err = pvr_cr_poll_reg32(pvr_dev, ROGUE_CR_BIF_READS_EXT_STATUS, 0, + ROGUE_CR_BIF_READS_EXT_STATUS_MASKFULL, + POLL_TIMEOUT_USEC); + if (err) + return err; + } + + err = pvr_cr_poll_reg32(pvr_dev, ROGUE_CR_BIFPM_READS_EXT_STATUS, 0, + ROGUE_CR_BIFPM_READS_EXT_STATUS_MASKFULL, + POLL_TIMEOUT_USEC); + if (err) + return err; + + err = pvr_cr_poll_reg64(pvr_dev, ROGUE_CR_SLC_STATUS1, 0, + ROGUE_CR_SLC_STATUS1_MASKFULL, + POLL_TIMEOUT_USEC); + if (err) + return err; + + /* + * Wait for SLC to signal IDLE. + * For cores with the LAYOUT_MARS feature, SLC would have been powered + * down by the FW. + */ + err = pvr_cr_poll_reg32(pvr_dev, ROGUE_CR_SLC_IDLE, + ROGUE_CR_SLC_IDLE_MASKFULL, + ROGUE_CR_SLC_IDLE_MASKFULL, POLL_TIMEOUT_USEC); + if (err) + return err; + + /* + * Wait for Sidekick/Jones to signal IDLE except for the Garten Wrapper. + * For cores with the LAYOUT_MARS feature, SIDEKICK would have been powered + * down by the FW. + */ + err = pvr_cr_poll_reg32(pvr_dev, ROGUE_CR_SIDEKICK_IDLE, sidekick_idle_mask, + sidekick_idle_mask, POLL_TIMEOUT_USEC); + if (err) + return err; + + if (pvr_dev->fw_dev.processor_type == PVR_FW_PROCESSOR_TYPE_META) { + err = pvr_meta_cr_read32(pvr_dev, META_CR_TxVECINT_BHALT, ®_value); + if (err) + return err; + + /* + * Wait for Sidekick/Jones to signal IDLE including the Garten + * Wrapper if there is no debugger attached (TxVECINT_BHALT = + * 0x0). + */ + if (reg_value) + skip_garten_idle = true; + } + + if (!skip_garten_idle) { + err = pvr_cr_poll_reg32(pvr_dev, ROGUE_CR_SIDEKICK_IDLE, + ROGUE_CR_SIDEKICK_IDLE_GARTEN_EN, + ROGUE_CR_SIDEKICK_IDLE_GARTEN_EN, + POLL_TIMEOUT_USEC); + if (err) + return err; + } + + if (PVR_HAS_FEATURE(pvr_dev, pbe2_in_xe)) + pvr_cr_write64(pvr_dev, ROGUE_CR_SOFT_RESET, + ROGUE_CR_SOFT_RESET__PBE2_XE__MASKFULL); + else + pvr_cr_write64(pvr_dev, ROGUE_CR_SOFT_RESET, ROGUE_CR_SOFT_RESET_MASKFULL); + + return 0; +} |