2 * Copyright 2023 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
24 #include <linux/pci.h>
27 #include "amdgpu_ih.h"
29 #include "oss/osssys_6_1_0_offset.h"
30 #include "oss/osssys_6_1_0_sh_mask.h"
32 #include "soc15_common.h"
35 #define MAX_REARM_RETRY 10
37 static void ih_v6_1_set_interrupt_funcs(struct amdgpu_device *adev);
40 * ih_v6_1_init_register_offset - Initialize register offset for ih rings
42 * @adev: amdgpu_device pointer
44 * Initialize register offset ih rings (IH_V6_0).
46 static void ih_v6_1_init_register_offset(struct amdgpu_device *adev)
48 struct amdgpu_ih_regs *ih_regs;
50 /* ih ring 2 is removed
51 * ih ring and ih ring 1 are available */
52 if (adev->irq.ih.ring_size) {
53 ih_regs = &adev->irq.ih.ih_regs;
54 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_BASE);
55 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_BASE_HI);
56 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_CNTL);
57 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_WPTR);
58 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_RPTR);
59 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_DOORBELL_RPTR);
60 ih_regs->ih_rb_wptr_addr_lo = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_WPTR_ADDR_LO);
61 ih_regs->ih_rb_wptr_addr_hi = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_WPTR_ADDR_HI);
62 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL;
65 if (adev->irq.ih1.ring_size) {
66 ih_regs = &adev->irq.ih1.ih_regs;
67 ih_regs->ih_rb_base = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_BASE_RING1);
68 ih_regs->ih_rb_base_hi = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_BASE_HI_RING1);
69 ih_regs->ih_rb_cntl = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_CNTL_RING1);
70 ih_regs->ih_rb_wptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_WPTR_RING1);
71 ih_regs->ih_rb_rptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_RB_RPTR_RING1);
72 ih_regs->ih_doorbell_rptr = SOC15_REG_OFFSET(OSSSYS, 0, regIH_DOORBELL_RPTR_RING1);
73 ih_regs->psp_reg_id = PSP_REG_IH_RB_CNTL_RING1;
78 * force_update_wptr_for_self_int - Force update the wptr for self interrupt
80 * @adev: amdgpu_device pointer
81 * @threshold: threshold to trigger the wptr reporting
82 * @timeout: timeout to trigger the wptr reporting
83 * @enabled: Enable/disable timeout flush mechanism
85 * threshold input range: 0 ~ 15, default 0,
86 * real_threshold = 2^threshold
87 * timeout input range: 0 ~ 20, default 8,
88 * real_timeout = (2^timeout) * 1024 / (socclk_freq)
90 * Force update wptr for self interrupt ( >= SIENNA_CICHLID).
93 force_update_wptr_for_self_int(struct amdgpu_device *adev,
94 u32 threshold, u32 timeout, bool enabled)
96 u32 ih_cntl, ih_rb_cntl;
98 ih_cntl = RREG32_SOC15(OSSSYS, 0, regIH_CNTL2);
99 ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, regIH_RB_CNTL_RING1);
101 ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL2,
102 SELF_IV_FORCE_WPTR_UPDATE_TIMEOUT, timeout);
103 ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL2,
104 SELF_IV_FORCE_WPTR_UPDATE_ENABLE, enabled);
105 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
106 RB_USED_INT_THRESHOLD, threshold);
108 if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
109 if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1, ih_rb_cntl))
112 WREG32_SOC15(OSSSYS, 0, regIH_RB_CNTL_RING1, ih_rb_cntl);
115 WREG32_SOC15(OSSSYS, 0, regIH_CNTL2, ih_cntl);
119 * ih_v6_1_toggle_ring_interrupts - toggle the interrupt ring buffer
121 * @adev: amdgpu_device pointer
122 * @ih: amdgpu_ih_ring pointer
123 * @enable: true - enable the interrupts, false - disable the interrupts
125 * Toggle the interrupt ring buffer (IH_V6_0)
127 static int ih_v6_1_toggle_ring_interrupts(struct amdgpu_device *adev,
128 struct amdgpu_ih_ring *ih,
131 struct amdgpu_ih_regs *ih_regs;
134 ih_regs = &ih->ih_regs;
136 tmp = RREG32(ih_regs->ih_rb_cntl);
137 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_ENABLE, (enable ? 1 : 0));
138 /* enable_intr field is only valid in ring0 */
139 if (ih == &adev->irq.ih)
140 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, ENABLE_INTR, (enable ? 1 : 0));
142 if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
143 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp))
146 WREG32(ih_regs->ih_rb_cntl, tmp);
152 /* set rptr, wptr to 0 */
153 WREG32(ih_regs->ih_rb_rptr, 0);
154 WREG32(ih_regs->ih_rb_wptr, 0);
163 * ih_v6_1_toggle_interrupts - Toggle all the available interrupt ring buffers
165 * @adev: amdgpu_device pointer
166 * @enable: enable or disable interrupt ring buffers
168 * Toggle all the available interrupt ring buffers (IH_V6_0).
170 static int ih_v6_1_toggle_interrupts(struct amdgpu_device *adev, bool enable)
172 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1};
176 for (i = 0; i < ARRAY_SIZE(ih); i++) {
177 if (ih[i]->ring_size) {
178 r = ih_v6_1_toggle_ring_interrupts(adev, ih[i], enable);
187 static uint32_t ih_v6_1_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl)
189 int rb_bufsz = order_base_2(ih->ring_size / 4);
191 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
192 MC_SPACE, ih->use_bus_addr ? 2 : 4);
193 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
194 WPTR_OVERFLOW_CLEAR, 1);
195 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
196 WPTR_OVERFLOW_ENABLE, 1);
197 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz);
198 /* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register
199 * value is written to memory
201 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
202 WPTR_WRITEBACK_ENABLE, 1);
203 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_SNOOP, 1);
204 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_RO, 0);
205 ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, MC_VMID, 0);
210 static uint32_t ih_v6_1_doorbell_rptr(struct amdgpu_ih_ring *ih)
212 u32 ih_doorbell_rtpr = 0;
214 if (ih->use_doorbell) {
215 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
216 IH_DOORBELL_RPTR, OFFSET,
218 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
222 ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
226 return ih_doorbell_rtpr;
230 * ih_v6_1_enable_ring - enable an ih ring buffer
232 * @adev: amdgpu_device pointer
233 * @ih: amdgpu_ih_ring pointer
235 * Enable an ih ring buffer (IH_V6_0)
237 static int ih_v6_1_enable_ring(struct amdgpu_device *adev,
238 struct amdgpu_ih_ring *ih)
240 struct amdgpu_ih_regs *ih_regs;
243 ih_regs = &ih->ih_regs;
245 /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/
246 WREG32(ih_regs->ih_rb_base, ih->gpu_addr >> 8);
247 WREG32(ih_regs->ih_rb_base_hi, (ih->gpu_addr >> 40) & 0xff);
249 tmp = RREG32(ih_regs->ih_rb_cntl);
250 tmp = ih_v6_1_rb_cntl(ih, tmp);
251 if (ih == &adev->irq.ih)
252 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RPTR_REARM, !!adev->irq.msi_enabled);
253 if (ih == &adev->irq.ih1) {
254 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_ENABLE, 0);
255 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_FULL_DRAIN_ENABLE, 1);
258 if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
259 if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) {
260 DRM_ERROR("PSP program IH_RB_CNTL failed!\n");
264 WREG32(ih_regs->ih_rb_cntl, tmp);
267 if (ih == &adev->irq.ih) {
268 /* set the ih ring 0 writeback address whether it's enabled or not */
269 WREG32(ih_regs->ih_rb_wptr_addr_lo, lower_32_bits(ih->wptr_addr));
270 WREG32(ih_regs->ih_rb_wptr_addr_hi, upper_32_bits(ih->wptr_addr) & 0xFFFF);
273 /* set rptr, wptr to 0 */
274 WREG32(ih_regs->ih_rb_wptr, 0);
275 WREG32(ih_regs->ih_rb_rptr, 0);
277 WREG32(ih_regs->ih_doorbell_rptr, ih_v6_1_doorbell_rptr(ih));
283 * ih_v6_1_irq_init - init and enable the interrupt ring
285 * @adev: amdgpu_device pointer
287 * Allocate a ring buffer for the interrupt controller,
288 * enable the RLC, disable interrupts, enable the IH
289 * ring buffer and enable it.
290 * Called at device load and reume.
291 * Returns 0 for success, errors for failure.
293 static int ih_v6_1_irq_init(struct amdgpu_device *adev)
295 struct amdgpu_ih_ring *ih[] = {&adev->irq.ih, &adev->irq.ih1};
302 ret = ih_v6_1_toggle_interrupts(adev, false);
306 adev->nbio.funcs->ih_control(adev);
308 if (unlikely((adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT) ||
309 (adev->firmware.load_type == AMDGPU_FW_LOAD_RLC_BACKDOOR_AUTO))) {
310 if (ih[0]->use_bus_addr) {
311 ih_chicken = RREG32_SOC15(OSSSYS, 0, regIH_CHICKEN);
312 ih_chicken = REG_SET_FIELD(ih_chicken,
313 IH_CHICKEN, MC_SPACE_GPA_ENABLE, 1);
314 WREG32_SOC15(OSSSYS, 0, regIH_CHICKEN, ih_chicken);
318 for (i = 0; i < ARRAY_SIZE(ih); i++) {
319 if (ih[i]->ring_size) {
320 ret = ih_v6_1_enable_ring(adev, ih[i]);
326 /* update doorbell range for ih ring 0 */
327 adev->nbio.funcs->ih_doorbell_range(adev, ih[0]->use_doorbell,
328 ih[0]->doorbell_index);
330 tmp = RREG32_SOC15(OSSSYS, 0, regIH_STORM_CLIENT_LIST_CNTL);
331 tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL,
332 CLIENT18_IS_STORM_CLIENT, 1);
333 WREG32_SOC15(OSSSYS, 0, regIH_STORM_CLIENT_LIST_CNTL, tmp);
335 tmp = RREG32_SOC15(OSSSYS, 0, regIH_INT_FLOOD_CNTL);
336 tmp = REG_SET_FIELD(tmp, IH_INT_FLOOD_CNTL, FLOOD_CNTL_ENABLE, 1);
337 WREG32_SOC15(OSSSYS, 0, regIH_INT_FLOOD_CNTL, tmp);
339 /* GC/MMHUB UTCL2 page fault interrupts are configured as
340 * MSI storm capable interrupts by deafult. The delay is
341 * used to avoid ISR being called too frequently
342 * when page fault happens on several continuous page
343 * and thus avoid MSI storm */
344 tmp = RREG32_SOC15(OSSSYS, 0, regIH_MSI_STORM_CTRL);
345 tmp = REG_SET_FIELD(tmp, IH_MSI_STORM_CTRL,
347 WREG32_SOC15(OSSSYS, 0, regIH_MSI_STORM_CTRL, tmp);
349 pci_set_master(adev->pdev);
351 /* enable interrupts */
352 ret = ih_v6_1_toggle_interrupts(adev, true);
355 /* enable wptr force update for self int */
356 force_update_wptr_for_self_int(adev, 0, 8, true);
358 if (adev->irq.ih_soft.ring_size)
359 adev->irq.ih_soft.enabled = true;
365 * ih_v6_1_irq_disable - disable interrupts
367 * @adev: amdgpu_device pointer
369 * Disable interrupts on the hw.
371 static void ih_v6_1_irq_disable(struct amdgpu_device *adev)
373 force_update_wptr_for_self_int(adev, 0, 8, false);
374 ih_v6_1_toggle_interrupts(adev, false);
376 /* Wait and acknowledge irq */
381 * ih_v6_1_get_wptr - get the IH ring buffer wptr
383 * @adev: amdgpu_device pointer
384 * @ih: amdgpu_ih_ring pointer
386 * Get the IH ring buffer wptr from either the register
387 * or the writeback memory buffer. Also check for
388 * ring buffer overflow and deal with it.
389 * Returns the value of the wptr.
391 static u32 ih_v6_1_get_wptr(struct amdgpu_device *adev,
392 struct amdgpu_ih_ring *ih)
395 struct amdgpu_ih_regs *ih_regs;
397 wptr = le32_to_cpu(*ih->wptr_cpu);
398 ih_regs = &ih->ih_regs;
400 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
403 wptr = RREG32_NO_KIQ(ih_regs->ih_rb_wptr);
404 if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
406 wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0);
408 /* When a ring buffer overflow happen start parsing interrupt
409 * from the last not overwritten vector (wptr + 32). Hopefully
410 * this should allow us to catch up.
412 tmp = (wptr + 32) & ih->ptr_mask;
413 dev_warn(adev->dev, "IH ring buffer overflow "
414 "(0x%08X, 0x%08X, 0x%08X)\n",
415 wptr, ih->rptr, tmp);
418 tmp = RREG32_NO_KIQ(ih_regs->ih_rb_cntl);
419 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
420 WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp);
422 /* Unset the CLEAR_OVERFLOW bit immediately so new overflows
425 tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 0);
426 WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp);
429 return (wptr & ih->ptr_mask);
433 * ih_v6_1_irq_rearm - rearm IRQ if lost
435 * @adev: amdgpu_device pointer
436 * @ih: amdgpu_ih_ring pointer
439 static void ih_v6_1_irq_rearm(struct amdgpu_device *adev,
440 struct amdgpu_ih_ring *ih)
444 struct amdgpu_ih_regs *ih_regs;
446 ih_regs = &ih->ih_regs;
448 /* Rearm IRQ / re-write doorbell if doorbell write is lost */
449 for (i = 0; i < MAX_REARM_RETRY; i++) {
450 v = RREG32_NO_KIQ(ih_regs->ih_rb_rptr);
451 if ((v < ih->ring_size) && (v != ih->rptr))
452 WDOORBELL32(ih->doorbell_index, ih->rptr);
459 * ih_v6_1_set_rptr - set the IH ring buffer rptr
461 * @adev: amdgpu_device pointer
462 * @ih: amdgpu_ih_ring pointer
464 * Set the IH ring buffer rptr.
466 static void ih_v6_1_set_rptr(struct amdgpu_device *adev,
467 struct amdgpu_ih_ring *ih)
469 struct amdgpu_ih_regs *ih_regs;
471 if (ih->use_doorbell) {
472 /* XXX check if swapping is necessary on BE */
473 *ih->rptr_cpu = ih->rptr;
474 WDOORBELL32(ih->doorbell_index, ih->rptr);
476 if (amdgpu_sriov_vf(adev))
477 ih_v6_1_irq_rearm(adev, ih);
479 ih_regs = &ih->ih_regs;
480 WREG32(ih_regs->ih_rb_rptr, ih->rptr);
485 * ih_v6_1_self_irq - dispatch work for ring 1
487 * @adev: amdgpu_device pointer
488 * @source: irq source
489 * @entry: IV with WPTR update
491 * Update the WPTR from the IV and schedule work to handle the entries.
493 static int ih_v6_1_self_irq(struct amdgpu_device *adev,
494 struct amdgpu_irq_src *source,
495 struct amdgpu_iv_entry *entry)
497 uint32_t wptr = cpu_to_le32(entry->src_data[0]);
499 switch (entry->ring_id) {
501 *adev->irq.ih1.wptr_cpu = wptr;
502 schedule_work(&adev->irq.ih1_work);
510 static const struct amdgpu_irq_src_funcs ih_v6_1_self_irq_funcs = {
511 .process = ih_v6_1_self_irq,
514 static void ih_v6_1_set_self_irq_funcs(struct amdgpu_device *adev)
516 adev->irq.self_irq.num_types = 0;
517 adev->irq.self_irq.funcs = &ih_v6_1_self_irq_funcs;
520 static int ih_v6_1_early_init(void *handle)
522 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
524 ih_v6_1_set_interrupt_funcs(adev);
525 ih_v6_1_set_self_irq_funcs(adev);
529 static int ih_v6_1_sw_init(void *handle)
532 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
535 r = amdgpu_irq_add_id(adev, SOC21_IH_CLIENTID_IH, 0,
536 &adev->irq.self_irq);
541 /* use gpu virtual address for ih ring
542 * until ih_checken is programmed to allow
543 * use bus address for ih ring by psp bl */
545 (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) ? false : true;
546 r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 256 * 1024, use_bus_addr);
550 adev->irq.ih.use_doorbell = true;
551 adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1;
553 adev->irq.ih1.ring_size = 0;
554 adev->irq.ih2.ring_size = 0;
556 /* initialize ih control register offset */
557 ih_v6_1_init_register_offset(adev);
559 r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, PAGE_SIZE, true);
563 r = amdgpu_irq_init(adev);
568 static int ih_v6_1_sw_fini(void *handle)
570 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
572 amdgpu_irq_fini_sw(adev);
577 static int ih_v6_1_hw_init(void *handle)
580 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
582 r = ih_v6_1_irq_init(adev);
589 static int ih_v6_1_hw_fini(void *handle)
591 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
593 ih_v6_1_irq_disable(adev);
598 static int ih_v6_1_suspend(void *handle)
600 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
602 return ih_v6_1_hw_fini(adev);
605 static int ih_v6_1_resume(void *handle)
607 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
609 return ih_v6_1_hw_init(adev);
612 static bool ih_v6_1_is_idle(void *handle)
618 static int ih_v6_1_wait_for_idle(void *handle)
624 static int ih_v6_1_soft_reset(void *handle)
630 static void ih_v6_1_update_clockgating_state(struct amdgpu_device *adev,
633 uint32_t data, def, field_val;
635 if (adev->cg_flags & AMD_CG_SUPPORT_IH_CG) {
636 def = data = RREG32_SOC15(OSSSYS, 0, regIH_CLK_CTRL);
637 field_val = enable ? 0 : 1;
638 data = REG_SET_FIELD(data, IH_CLK_CTRL,
639 DBUS_MUX_CLK_SOFT_OVERRIDE, field_val);
640 data = REG_SET_FIELD(data, IH_CLK_CTRL,
641 OSSSYS_SHARE_CLK_SOFT_OVERRIDE, field_val);
642 data = REG_SET_FIELD(data, IH_CLK_CTRL,
643 LIMIT_SMN_CLK_SOFT_OVERRIDE, field_val);
644 data = REG_SET_FIELD(data, IH_CLK_CTRL,
645 DYN_CLK_SOFT_OVERRIDE, field_val);
646 data = REG_SET_FIELD(data, IH_CLK_CTRL,
647 REG_CLK_SOFT_OVERRIDE, field_val);
649 WREG32_SOC15(OSSSYS, 0, regIH_CLK_CTRL, data);
655 static int ih_v6_1_set_clockgating_state(void *handle,
656 enum amd_clockgating_state state)
658 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
660 ih_v6_1_update_clockgating_state(adev,
661 state == AMD_CG_STATE_GATE);
665 static void ih_v6_1_update_ih_mem_power_gating(struct amdgpu_device *adev,
668 uint32_t ih_mem_pwr_cntl;
670 /* Disable ih sram power cntl before switch powergating mode */
671 ih_mem_pwr_cntl = RREG32_SOC15(OSSSYS, 0, regIH_MEM_POWER_CTRL);
672 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
673 IH_BUFFER_MEM_POWER_CTRL_EN, 0);
674 WREG32_SOC15(OSSSYS, 0, regIH_MEM_POWER_CTRL, ih_mem_pwr_cntl);
676 /* It is recommended to set mem powergating mode to DS mode */
679 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
680 IH_BUFFER_MEM_POWER_LS_EN, 0);
681 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
682 IH_BUFFER_MEM_POWER_DS_EN, 1);
683 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
684 IH_BUFFER_MEM_POWER_SD_EN, 0);
685 /* cam mem power mode */
686 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
687 IH_RETRY_INT_CAM_MEM_POWER_LS_EN, 0);
688 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
689 IH_RETRY_INT_CAM_MEM_POWER_DS_EN, 1);
690 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
691 IH_RETRY_INT_CAM_MEM_POWER_SD_EN, 0);
692 /* re-enable power cntl */
693 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
694 IH_BUFFER_MEM_POWER_CTRL_EN, 1);
697 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
698 IH_BUFFER_MEM_POWER_LS_EN, 0);
699 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
700 IH_BUFFER_MEM_POWER_DS_EN, 0);
701 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
702 IH_BUFFER_MEM_POWER_SD_EN, 0);
703 /* cam mem power mode */
704 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
705 IH_RETRY_INT_CAM_MEM_POWER_LS_EN, 0);
706 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
707 IH_RETRY_INT_CAM_MEM_POWER_DS_EN, 0);
708 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
709 IH_RETRY_INT_CAM_MEM_POWER_SD_EN, 0);
710 /* re-enable power cntl*/
711 ih_mem_pwr_cntl = REG_SET_FIELD(ih_mem_pwr_cntl, IH_MEM_POWER_CTRL,
712 IH_BUFFER_MEM_POWER_CTRL_EN, 1);
715 WREG32_SOC15(OSSSYS, 0, regIH_MEM_POWER_CTRL, ih_mem_pwr_cntl);
718 static int ih_v6_1_set_powergating_state(void *handle,
719 enum amd_powergating_state state)
721 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
722 bool enable = (state == AMD_PG_STATE_GATE);
724 if (adev->pg_flags & AMD_PG_SUPPORT_IH_SRAM_PG)
725 ih_v6_1_update_ih_mem_power_gating(adev, enable);
730 static void ih_v6_1_get_clockgating_state(void *handle, u64 *flags)
732 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
734 if (!RREG32_SOC15(OSSSYS, 0, regIH_CLK_CTRL))
735 *flags |= AMD_CG_SUPPORT_IH_CG;
740 static const struct amd_ip_funcs ih_v6_1_ip_funcs = {
742 .early_init = ih_v6_1_early_init,
744 .sw_init = ih_v6_1_sw_init,
745 .sw_fini = ih_v6_1_sw_fini,
746 .hw_init = ih_v6_1_hw_init,
747 .hw_fini = ih_v6_1_hw_fini,
748 .suspend = ih_v6_1_suspend,
749 .resume = ih_v6_1_resume,
750 .is_idle = ih_v6_1_is_idle,
751 .wait_for_idle = ih_v6_1_wait_for_idle,
752 .soft_reset = ih_v6_1_soft_reset,
753 .set_clockgating_state = ih_v6_1_set_clockgating_state,
754 .set_powergating_state = ih_v6_1_set_powergating_state,
755 .get_clockgating_state = ih_v6_1_get_clockgating_state,
758 static const struct amdgpu_ih_funcs ih_v6_1_funcs = {
759 .get_wptr = ih_v6_1_get_wptr,
760 .decode_iv = amdgpu_ih_decode_iv_helper,
761 .decode_iv_ts = amdgpu_ih_decode_iv_ts_helper,
762 .set_rptr = ih_v6_1_set_rptr
765 static void ih_v6_1_set_interrupt_funcs(struct amdgpu_device *adev)
767 adev->irq.ih_funcs = &ih_v6_1_funcs;
770 const struct amdgpu_ip_block_version ih_v6_1_ip_block = {
771 .type = AMD_IP_BLOCK_TYPE_IH,
775 .funcs = &ih_v6_1_ip_funcs,