drm/panfrost: Add initial panfrost driver

This adds the initial driver for panfrost which supports Arm Mali
Midgard and Bifrost family of GPUs. Currently, only the T860 and
T760 Midgard GPUs have been tested.

v2:
- Add GPU reset on job hangs (Tomeu)
- Add RuntimePM and devfreq support (Tomeu)
- Fix T760 support (Tomeu)
- Add a TODO file (Rob, Tomeu)
- Support multiple in fences (Tomeu)
- Drop support for shared fences (Tomeu)
- Fill in MMU de-init (Rob)
- Move register definitions back to single header (Rob)
- Clean-up hardcoded job submit todos (Rob)
- Implement feature setup based on features/issues (Rob)
- Add remaining Midgard DT compatible strings (Rob)

v3:
- Add support for reset lines (Neil)
- Add a MAINTAINERS entry (Rob)
- Call dma_set_mask_and_coherent (Rob)
- Do MMU invalidate on map and unmap. Restructure to do a single
  operation per map/unmap call. (Rob)
- Add a missing explicit padding to struct drm_panfrost_create_bo (Rob)
- Fix 0-day error: "panfrost_devfreq.c:151:9-16: ERROR: PTR_ERR applied after initialization to constant on line 150"
- Drop HW_FEATURE_AARCH64_MMU conditional (Rob)
- s/DRM_PANFROST_PARAM_GPU_ID/DRM_PANFROST_PARAM_GPU_PROD_ID/ (Rob)
- Check drm_gem_shmem_prime_import_sg_table() error code (Rob)
- Re-order power on sequence (Rob)
- Move panfrost_acquire_object_fences() before scheduling job (Rob)
- Add NULL checks on array pointers in job clean-up (Rob)
- Rework devfreq (Tomeu)
- Fix devfreq init with no regulator (Rob)
- Various WS and comments clean-up (Rob)

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Lyude Paul <lyude@redhat.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Marty E. Plummer <hanetzer@startmail.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190409205427.6943-4-robh@kernel.org

1 files changed, 176 insertions, 0 deletions

diff --git a/drivers/gpu/drm/panfrost/panfrost_issues.h b/drivers/gpu/drm/panfrost/panfrost_issues.h
new file mode 100644
index 000000000000..cec6dcdadb5c
--- /dev/null
+++ b/drivers/gpu/drm/panfrost/panfrost_issues.h
@@ -0,0 +1,176 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* (C) COPYRIGHT 2014-2018 ARM Limited. All rights reserved. */
+/* Copyright 2019 Linaro, Ltd., Rob Herring <robh@kernel.org> */
+#ifndef __PANFROST_ISSUES_H__
+#define __PANFROST_ISSUES_H__
+
+#include <linux/bitops.h>
+
+#include "panfrost_device.h"
+
+/*
+ * This is not a complete list of issues, but only the ones the driver needs
+ * to care about.
+ */
+enum panfrost_hw_issue {
+	HW_ISSUE_6367,
+	HW_ISSUE_6787,
+	HW_ISSUE_8186,
+	HW_ISSUE_8245,
+	HW_ISSUE_8316,
+	HW_ISSUE_8394,
+	HW_ISSUE_8401,
+	HW_ISSUE_8408,
+	HW_ISSUE_8443,
+	HW_ISSUE_8987,
+	HW_ISSUE_9435,
+	HW_ISSUE_9510,
+	HW_ISSUE_9630,
+	HW_ISSUE_10327,
+	HW_ISSUE_10649,
+	HW_ISSUE_10676,
+	HW_ISSUE_10797,
+	HW_ISSUE_10817,
+	HW_ISSUE_10883,
+	HW_ISSUE_10959,
+	HW_ISSUE_10969,
+	HW_ISSUE_11020,
+	HW_ISSUE_11024,
+	HW_ISSUE_11035,
+	HW_ISSUE_11056,
+	HW_ISSUE_T76X_3542,
+	HW_ISSUE_T76X_3953,
+	HW_ISSUE_TMIX_8463,
+	GPUCORE_1619,
+	HW_ISSUE_TMIX_8438,
+	HW_ISSUE_TGOX_R1_1234,
+	HW_ISSUE_END
+};
+
+#define hw_issues_all (\
+	BIT_ULL(HW_ISSUE_9435))
+
+#define hw_issues_t600 (\
+	BIT_ULL(HW_ISSUE_6367) | \
+	BIT_ULL(HW_ISSUE_6787) | \
+	BIT_ULL(HW_ISSUE_8408) | \
+	BIT_ULL(HW_ISSUE_9510) | \
+	BIT_ULL(HW_ISSUE_10649) | \
+	BIT_ULL(HW_ISSUE_10676) | \
+	BIT_ULL(HW_ISSUE_10883) | \
+	BIT_ULL(HW_ISSUE_11020) | \
+	BIT_ULL(HW_ISSUE_11035) | \
+	BIT_ULL(HW_ISSUE_11056) | \
+	BIT_ULL(HW_ISSUE_TMIX_8438))
+
+#define hw_issues_t600_r0p0_15dev0 (\
+	BIT_ULL(HW_ISSUE_8186) | \
+	BIT_ULL(HW_ISSUE_8245) | \
+	BIT_ULL(HW_ISSUE_8316) | \
+	BIT_ULL(HW_ISSUE_8394) | \
+	BIT_ULL(HW_ISSUE_8401) | \
+	BIT_ULL(HW_ISSUE_8443) | \
+	BIT_ULL(HW_ISSUE_8987) | \
+	BIT_ULL(HW_ISSUE_9630) | \
+	BIT_ULL(HW_ISSUE_10969) | \
+	BIT_ULL(GPUCORE_1619))
+
+#define hw_issues_t620 (\
+	BIT_ULL(HW_ISSUE_10649) | \
+	BIT_ULL(HW_ISSUE_10883) | \
+	BIT_ULL(HW_ISSUE_10959) | \
+	BIT_ULL(HW_ISSUE_11056) | \
+	BIT_ULL(HW_ISSUE_TMIX_8438))
+
+#define hw_issues_t620_r0p1 (\
+	BIT_ULL(HW_ISSUE_10327) | \
+	BIT_ULL(HW_ISSUE_10676) | \
+	BIT_ULL(HW_ISSUE_10817) | \
+	BIT_ULL(HW_ISSUE_11020) | \
+	BIT_ULL(HW_ISSUE_11024) | \
+	BIT_ULL(HW_ISSUE_11035))
+
+#define hw_issues_t620_r1p0 (\
+	BIT_ULL(HW_ISSUE_11020) | \
+	BIT_ULL(HW_ISSUE_11024))
+
+#define hw_issues_t720 (\
+	BIT_ULL(HW_ISSUE_10649) | \
+	BIT_ULL(HW_ISSUE_10797) | \
+	BIT_ULL(HW_ISSUE_10883) | \
+	BIT_ULL(HW_ISSUE_11056) | \
+	BIT_ULL(HW_ISSUE_TMIX_8438))
+
+#define hw_issues_t760 (\
+	BIT_ULL(HW_ISSUE_10883) | \
+	BIT_ULL(HW_ISSUE_T76X_3953) | \
+	BIT_ULL(HW_ISSUE_TMIX_8438))
+
+#define hw_issues_t760_r0p0 (\
+	BIT_ULL(HW_ISSUE_11020) | \
+	BIT_ULL(HW_ISSUE_11024) | \
+	BIT_ULL(HW_ISSUE_T76X_3542))
+
+#define hw_issues_t760_r0p1 (\
+	BIT_ULL(HW_ISSUE_11020) | \
+	BIT_ULL(HW_ISSUE_11024) | \
+	BIT_ULL(HW_ISSUE_T76X_3542))
+
+#define hw_issues_t760_r0p1_50rel0 (\
+	BIT_ULL(HW_ISSUE_T76X_3542))
+
+#define hw_issues_t760_r0p2 (\
+	BIT_ULL(HW_ISSUE_11020) | \
+	BIT_ULL(HW_ISSUE_11024) | \
+	BIT_ULL(HW_ISSUE_T76X_3542))
+
+#define hw_issues_t760_r0p3 (\
+	BIT_ULL(HW_ISSUE_T76X_3542))
+
+#define hw_issues_t820 (\
+	BIT_ULL(HW_ISSUE_10883) | \
+	BIT_ULL(HW_ISSUE_T76X_3953) | \
+	BIT_ULL(HW_ISSUE_TMIX_8438))
+
+#define hw_issues_t830 (\
+	BIT_ULL(HW_ISSUE_10883) | \
+	BIT_ULL(HW_ISSUE_T76X_3953) | \
+	BIT_ULL(HW_ISSUE_TMIX_8438))
+
+#define hw_issues_t860 (\
+	BIT_ULL(HW_ISSUE_10883) | \
+	BIT_ULL(HW_ISSUE_T76X_3953) | \
+	BIT_ULL(HW_ISSUE_TMIX_8438))
+
+#define hw_issues_t880 (\
+	BIT_ULL(HW_ISSUE_10883) | \
+	BIT_ULL(HW_ISSUE_T76X_3953) | \
+	BIT_ULL(HW_ISSUE_TMIX_8438))
+
+#define hw_issues_g31 0
+
+#define hw_issues_g31_r1p0 (\
+	BIT_ULL(HW_ISSUE_TGOX_R1_1234))
+
+#define hw_issues_g51 0
+
+#define hw_issues_g52 0
+
+#define hw_issues_g71 (\
+	BIT_ULL(HW_ISSUE_TMIX_8463) | \
+	BIT_ULL(HW_ISSUE_TMIX_8438))
+
+#define hw_issues_g71_r0p0_05dev0 (\
+	BIT_ULL(HW_ISSUE_T76X_3953))
+
+#define hw_issues_g72 0
+
+#define hw_issues_g76 0
+
+static inline bool panfrost_has_hw_issue(struct panfrost_device *pfdev,
+					 enum panfrost_hw_issue issue)
+{
+	return test_bit(issue, pfdev->features.hw_issues);
+}
+
+#endif /* __PANFROST_ISSUES_H__ */