drm/v3d: Introduce a new DRM driver for Broadcom V3D V3.x+

This driver will be used to support Mesa on the Broadcom 7268 and 7278
platforms.

V3D 3.3 introduces an MMU, which means we no longer need CMA or vc4's
complicated CL/shader validation scheme.  This massively changes the
GEM behavior, so I've forked off to a new driver.

v2: Mark SUBMIT_CL as needing DRM_AUTH.  coccinelle fixes from kbuild
    test robot. Drop personal git link from MAINTAINERS.  Don't
    double-map dma-buf imported BOs.  Add kerneldoc about needing MMU
    eviction.  Drop prime vmap/unmap stubs.  Delay mmap offset setup
    to mmap time.  Use drm_dev_init instead of _alloc.  Use
    ktime_get() for wait_bo timeouts.  Drop drm_can_sleep() usage,
    since we don't modeset.  Switch page tables back to WC (debug
    change to coherent had slipped in).  Switch
    drm_gem_object_unreference_unlocked() to
    drm_gem_object_put_unlocked().  Simplify overflow mem handling by
    not sharing overflow mem between jobs.
v3: no changes
v4: align submit_cl to 64 bits (review by airlied), check zero flags in
    other ioctls.

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v4)
Acked-by: Dave Airlie <airlied@linux.ie> (v3, requested submit_cl change)
Link: https://patchwork.freedesktop.org/patch/msgid/20180430181058.30181-3-eric@anholt.net

1 files changed, 295 insertions, 0 deletions

diff --git a/drivers/gpu/drm/v3d/v3d_regs.h b/drivers/gpu/drm/v3d/v3d_regs.h
new file mode 100644
index 000000000000..fc13282dfc2f
--- /dev/null
+++ b/drivers/gpu/drm/v3d/v3d_regs.h
@@ -0,0 +1,295 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (C) 2017-2018 Broadcom */
+
+#ifndef V3D_REGS_H
+#define V3D_REGS_H
+
+#include <linux/bitops.h>
+
+#define V3D_MASK(high, low) ((u32)GENMASK(high, low))
+/* Using the GNU statement expression extension */
+#define V3D_SET_FIELD(value, field)					\
+	({								\
+		u32 fieldval = (value) << field##_SHIFT;		\
+		WARN_ON((fieldval & ~field##_MASK) != 0);		\
+		fieldval & field##_MASK;				\
+	 })
+
+#define V3D_GET_FIELD(word, field) (((word) & field##_MASK) >>		\
+				    field##_SHIFT)
+
+/* Hub registers for shared hardware between V3D cores. */
+
+#define V3D_HUB_AXICFG                                 0x00000
+# define V3D_HUB_AXICFG_MAX_LEN_MASK                   V3D_MASK(3, 0)
+# define V3D_HUB_AXICFG_MAX_LEN_SHIFT                  0
+#define V3D_HUB_UIFCFG                                 0x00004
+#define V3D_HUB_IDENT0                                 0x00008
+
+#define V3D_HUB_IDENT1                                 0x0000c
+# define V3D_HUB_IDENT1_WITH_MSO                       BIT(19)
+# define V3D_HUB_IDENT1_WITH_TSY                       BIT(18)
+# define V3D_HUB_IDENT1_WITH_TFU                       BIT(17)
+# define V3D_HUB_IDENT1_WITH_L3C                       BIT(16)
+# define V3D_HUB_IDENT1_NHOSTS_MASK                    V3D_MASK(15, 12)
+# define V3D_HUB_IDENT1_NHOSTS_SHIFT                   12
+# define V3D_HUB_IDENT1_NCORES_MASK                    V3D_MASK(11, 8)
+# define V3D_HUB_IDENT1_NCORES_SHIFT                   8
+# define V3D_HUB_IDENT1_REV_MASK                       V3D_MASK(7, 4)
+# define V3D_HUB_IDENT1_REV_SHIFT                      4
+# define V3D_HUB_IDENT1_TVER_MASK                      V3D_MASK(3, 0)
+# define V3D_HUB_IDENT1_TVER_SHIFT                     0
+
+#define V3D_HUB_IDENT2                                 0x00010
+# define V3D_HUB_IDENT2_WITH_MMU                       BIT(8)
+# define V3D_HUB_IDENT2_L3C_NKB_MASK                   V3D_MASK(7, 0)
+# define V3D_HUB_IDENT2_L3C_NKB_SHIFT                  0
+
+#define V3D_HUB_IDENT3                                 0x00014
+# define V3D_HUB_IDENT3_IPREV_MASK                     V3D_MASK(15, 8)
+# define V3D_HUB_IDENT3_IPREV_SHIFT                    8
+# define V3D_HUB_IDENT3_IPIDX_MASK                     V3D_MASK(7, 0)
+# define V3D_HUB_IDENT3_IPIDX_SHIFT                    0
+
+#define V3D_HUB_INT_STS                                0x00050
+#define V3D_HUB_INT_SET                                0x00054
+#define V3D_HUB_INT_CLR                                0x00058
+#define V3D_HUB_INT_MSK_STS                            0x0005c
+#define V3D_HUB_INT_MSK_SET                            0x00060
+#define V3D_HUB_INT_MSK_CLR                            0x00064
+# define V3D_HUB_INT_MMU_WRV                           BIT(5)
+# define V3D_HUB_INT_MMU_PTI                           BIT(4)
+# define V3D_HUB_INT_MMU_CAP                           BIT(3)
+# define V3D_HUB_INT_MSO                               BIT(2)
+# define V3D_HUB_INT_TFUC                              BIT(1)
+# define V3D_HUB_INT_TFUF                              BIT(0)
+
+#define V3D_GCA_CACHE_CTRL                             0x0000c
+# define V3D_GCA_CACHE_CTRL_FLUSH                      BIT(0)
+
+#define V3D_GCA_SAFE_SHUTDOWN                          0x000b0
+# define V3D_GCA_SAFE_SHUTDOWN_EN                      BIT(0)
+
+#define V3D_GCA_SAFE_SHUTDOWN_ACK                      0x000b4
+# define V3D_GCA_SAFE_SHUTDOWN_ACK_ACKED               3
+
+# define V3D_TOP_GR_BRIDGE_REVISION                    0x00000
+# define V3D_TOP_GR_BRIDGE_MAJOR_MASK                  V3D_MASK(15, 8)
+# define V3D_TOP_GR_BRIDGE_MAJOR_SHIFT                 8
+# define V3D_TOP_GR_BRIDGE_MINOR_MASK                  V3D_MASK(7, 0)
+# define V3D_TOP_GR_BRIDGE_MINOR_SHIFT                 0
+
+/* 7268 reset reg */
+# define V3D_TOP_GR_BRIDGE_SW_INIT_0                   0x00008
+# define V3D_TOP_GR_BRIDGE_SW_INIT_0_V3D_CLK_108_SW_INIT BIT(0)
+/* 7278 reset reg */
+# define V3D_TOP_GR_BRIDGE_SW_INIT_1                   0x0000c
+# define V3D_TOP_GR_BRIDGE_SW_INIT_1_V3D_CLK_108_SW_INIT BIT(0)
+
+/* Per-MMU registers. */
+
+#define V3D_MMUC_CONTROL                               0x01000
+# define V3D_MMUC_CONTROL_CLEAR                        BIT(3)
+# define V3D_MMUC_CONTROL_FLUSHING                     BIT(2)
+# define V3D_MMUC_CONTROL_FLUSH                        BIT(1)
+# define V3D_MMUC_CONTROL_ENABLE                       BIT(0)
+
+#define V3D_MMU_CTL                                    0x01200
+# define V3D_MMU_CTL_CAP_EXCEEDED                      BIT(27)
+# define V3D_MMU_CTL_CAP_EXCEEDED_ABORT                BIT(26)
+# define V3D_MMU_CTL_CAP_EXCEEDED_INT                  BIT(25)
+# define V3D_MMU_CTL_CAP_EXCEEDED_EXCEPTION            BIT(24)
+# define V3D_MMU_CTL_PT_INVALID                        BIT(20)
+# define V3D_MMU_CTL_PT_INVALID_ABORT                  BIT(19)
+# define V3D_MMU_CTL_PT_INVALID_INT                    BIT(18)
+# define V3D_MMU_CTL_PT_INVALID_EXCEPTION              BIT(17)
+# define V3D_MMU_CTL_WRITE_VIOLATION                   BIT(16)
+# define V3D_MMU_CTL_WRITE_VIOLATION_ABORT             BIT(11)
+# define V3D_MMU_CTL_WRITE_VIOLATION_INT               BIT(10)
+# define V3D_MMU_CTL_WRITE_VIOLATION_EXCEPTION         BIT(9)
+# define V3D_MMU_CTL_TLB_CLEARING                      BIT(7)
+# define V3D_MMU_CTL_TLB_STATS_CLEAR                   BIT(3)
+# define V3D_MMU_CTL_TLB_CLEAR                         BIT(2)
+# define V3D_MMU_CTL_TLB_STATS_ENABLE                  BIT(1)
+# define V3D_MMU_CTL_ENABLE                            BIT(0)
+
+#define V3D_MMU_PT_PA_BASE                             0x01204
+#define V3D_MMU_HIT                                    0x01208
+#define V3D_MMU_MISSES                                 0x0120c
+#define V3D_MMU_STALLS                                 0x01210
+
+#define V3D_MMU_ADDR_CAP                               0x01214
+# define V3D_MMU_ADDR_CAP_ENABLE                       BIT(31)
+# define V3D_MMU_ADDR_CAP_MPAGE_MASK                   V3D_MASK(11, 0)
+# define V3D_MMU_ADDR_CAP_MPAGE_SHIFT                  0
+
+#define V3D_MMU_SHOOT_DOWN                             0x01218
+# define V3D_MMU_SHOOT_DOWN_SHOOTING                   BIT(29)
+# define V3D_MMU_SHOOT_DOWN_SHOOT                      BIT(28)
+# define V3D_MMU_SHOOT_DOWN_PAGE_MASK                  V3D_MASK(27, 0)
+# define V3D_MMU_SHOOT_DOWN_PAGE_SHIFT                 0
+
+#define V3D_MMU_BYPASS_START                           0x0121c
+#define V3D_MMU_BYPASS_END                             0x01220
+
+/* AXI ID of the access that faulted */
+#define V3D_MMU_VIO_ID                                 0x0122c
+
+/* Address for illegal PTEs to return */
+#define V3D_MMU_ILLEGAL_ADDR                           0x01230
+# define V3D_MMU_ILLEGAL_ADDR_ENABLE                   BIT(31)
+
+/* Address that faulted */
+#define V3D_MMU_VIO_ADDR                               0x01234
+
+/* Per-V3D-core registers */
+
+#define V3D_CTL_IDENT0                                 0x00000
+# define V3D_IDENT0_VER_MASK                           V3D_MASK(31, 24)
+# define V3D_IDENT0_VER_SHIFT                          24
+
+#define V3D_CTL_IDENT1                                 0x00004
+/* Multiples of 1kb */
+# define V3D_IDENT1_VPM_SIZE_MASK                      V3D_MASK(31, 28)
+# define V3D_IDENT1_VPM_SIZE_SHIFT                     28
+# define V3D_IDENT1_NSEM_MASK                          V3D_MASK(23, 16)
+# define V3D_IDENT1_NSEM_SHIFT                         16
+# define V3D_IDENT1_NTMU_MASK                          V3D_MASK(15, 12)
+# define V3D_IDENT1_NTMU_SHIFT                         12
+# define V3D_IDENT1_QUPS_MASK                          V3D_MASK(11, 8)
+# define V3D_IDENT1_QUPS_SHIFT                         8
+# define V3D_IDENT1_NSLC_MASK                          V3D_MASK(7, 4)
+# define V3D_IDENT1_NSLC_SHIFT                         4
+# define V3D_IDENT1_REV_MASK                           V3D_MASK(3, 0)
+# define V3D_IDENT1_REV_SHIFT                          0
+
+#define V3D_CTL_IDENT2                                 0x00008
+# define V3D_IDENT2_BCG_INT                            BIT(28)
+
+#define V3D_CTL_MISCCFG                                0x00018
+# define V3D_MISCCFG_OVRTMUOUT                         BIT(0)
+
+#define V3D_CTL_L2CACTL                                0x00020
+# define V3D_L2CACTL_L2CCLR                            BIT(2)
+# define V3D_L2CACTL_L2CDIS                            BIT(1)
+# define V3D_L2CACTL_L2CENA                            BIT(0)
+
+#define V3D_CTL_SLCACTL                                0x00024
+# define V3D_SLCACTL_TVCCS_MASK                        V3D_MASK(27, 24)
+# define V3D_SLCACTL_TVCCS_SHIFT                       24
+# define V3D_SLCACTL_TDCCS_MASK                        V3D_MASK(19, 16)
+# define V3D_SLCACTL_TDCCS_SHIFT                       16
+# define V3D_SLCACTL_UCC_MASK                          V3D_MASK(11, 8)
+# define V3D_SLCACTL_UCC_SHIFT                         8
+# define V3D_SLCACTL_ICC_MASK                          V3D_MASK(3, 0)
+# define V3D_SLCACTL_ICC_SHIFT                         0
+
+#define V3D_CTL_L2TCACTL                               0x00030
+# define V3D_L2TCACTL_TMUWCF                           BIT(8)
+# define V3D_L2TCACTL_L2T_NO_WM                        BIT(4)
+# define V3D_L2TCACTL_FLM_FLUSH                        0
+# define V3D_L2TCACTL_FLM_CLEAR                        1
+# define V3D_L2TCACTL_FLM_CLEAN                        2
+# define V3D_L2TCACTL_FLM_MASK                         V3D_MASK(2, 1)
+# define V3D_L2TCACTL_FLM_SHIFT                        1
+# define V3D_L2TCACTL_L2TFLS                           BIT(0)
+#define V3D_CTL_L2TFLSTA                               0x00034
+#define V3D_CTL_L2TFLEND                               0x00038
+
+#define V3D_CTL_INT_STS                                0x00050
+#define V3D_CTL_INT_SET                                0x00054
+#define V3D_CTL_INT_CLR                                0x00058
+#define V3D_CTL_INT_MSK_STS                            0x0005c
+#define V3D_CTL_INT_MSK_SET                            0x00060
+#define V3D_CTL_INT_MSK_CLR                            0x00064
+# define V3D_INT_QPU_MASK                              V3D_MASK(27, 16)
+# define V3D_INT_QPU_SHIFT                             16
+# define V3D_INT_GMPV                                  BIT(5)
+# define V3D_INT_TRFB                                  BIT(4)
+# define V3D_INT_SPILLUSE                              BIT(3)
+# define V3D_INT_OUTOMEM                               BIT(2)
+# define V3D_INT_FLDONE                                BIT(1)
+# define V3D_INT_FRDONE                                BIT(0)
+
+#define V3D_CLE_CT0CS                                  0x00100
+#define V3D_CLE_CT1CS                                  0x00104
+#define V3D_CLE_CTNCS(n) (V3D_CLE_CT0CS + 4 * n)
+#define V3D_CLE_CT0EA                                  0x00108
+#define V3D_CLE_CT1EA                                  0x0010c
+#define V3D_CLE_CTNEA(n) (V3D_CLE_CT0EA + 4 * n)
+#define V3D_CLE_CT0CA                                  0x00110
+#define V3D_CLE_CT1CA                                  0x00114
+#define V3D_CLE_CTNCA(n) (V3D_CLE_CT0CA + 4 * n)
+#define V3D_CLE_CT0RA                                  0x00118
+#define V3D_CLE_CT1RA                                  0x0011c
+#define V3D_CLE_CT0LC                                  0x00120
+#define V3D_CLE_CT1LC                                  0x00124
+#define V3D_CLE_CT0PC                                  0x00128
+#define V3D_CLE_CT1PC                                  0x0012c
+#define V3D_CLE_PCS                                    0x00130
+#define V3D_CLE_BFC                                    0x00134
+#define V3D_CLE_RFC                                    0x00138
+#define V3D_CLE_TFBC                                   0x0013c
+#define V3D_CLE_TFIT                                   0x00140
+#define V3D_CLE_CT1CFG                                 0x00144
+#define V3D_CLE_CT1TILECT                              0x00148
+#define V3D_CLE_CT1TSKIP                               0x0014c
+#define V3D_CLE_CT1PTCT                                0x00150
+#define V3D_CLE_CT0SYNC                                0x00154
+#define V3D_CLE_CT1SYNC                                0x00158
+#define V3D_CLE_CT0QTS                                 0x0015c
+# define V3D_CLE_CT0QTS_ENABLE                         BIT(1)
+#define V3D_CLE_CT0QBA                                 0x00160
+#define V3D_CLE_CT1QBA                                 0x00164
+#define V3D_CLE_CTNQBA(n) (V3D_CLE_CT0QBA + 4 * n)
+#define V3D_CLE_CT0QEA                                 0x00168
+#define V3D_CLE_CT1QEA                                 0x0016c
+#define V3D_CLE_CTNQEA(n) (V3D_CLE_CT0QEA + 4 * n)
+#define V3D_CLE_CT0QMA                                 0x00170
+#define V3D_CLE_CT0QMS                                 0x00174
+#define V3D_CLE_CT1QCFG                                0x00178
+/* If set without ETPROC, entirely skip tiles with no primitives. */
+# define V3D_CLE_QCFG_ETFILT                           BIT(7)
+/* If set with ETFILT, just write the clear color to tiles with no
+ * primitives.
+ */
+# define V3D_CLE_QCFG_ETPROC                           BIT(6)
+# define V3D_CLE_QCFG_ETSFLUSH                         BIT(1)
+# define V3D_CLE_QCFG_MCDIS                            BIT(0)
+
+#define V3D_PTB_BPCA                                   0x00300
+#define V3D_PTB_BPCS                                   0x00304
+#define V3D_PTB_BPOA                                   0x00308
+#define V3D_PTB_BPOS                                   0x0030c
+
+#define V3D_PTB_BXCF                                   0x00310
+# define V3D_PTB_BXCF_RWORDERDISA                      BIT(1)
+# define V3D_PTB_BXCF_CLIPDISA                         BIT(0)
+
+#define V3D_GMP_STATUS                                 0x00800
+# define V3D_GMP_STATUS_GMPRST                         BIT(31)
+# define V3D_GMP_STATUS_WR_COUNT_MASK                  V3D_MASK(30, 24)
+# define V3D_GMP_STATUS_WR_COUNT_SHIFT                 24
+# define V3D_GMP_STATUS_RD_COUNT_MASK                  V3D_MASK(22, 16)
+# define V3D_GMP_STATUS_RD_COUNT_SHIFT                 16
+# define V3D_GMP_STATUS_WR_ACTIVE                      BIT(5)
+# define V3D_GMP_STATUS_RD_ACTIVE                      BIT(4)
+# define V3D_GMP_STATUS_CFG_BUSY                       BIT(3)
+# define V3D_GMP_STATUS_CNTOVF                         BIT(2)
+# define V3D_GMP_STATUS_INVPROT                        BIT(1)
+# define V3D_GMP_STATUS_VIO                            BIT(0)
+
+#define V3D_GMP_CFG                                    0x00804
+# define V3D_GMP_CFG_LBURSTEN                          BIT(3)
+# define V3D_GMP_CFG_PGCRSEN                           BIT()
+# define V3D_GMP_CFG_STOP_REQ                          BIT(1)
+# define V3D_GMP_CFG_PROT_ENABLE                       BIT(0)
+
+#define V3D_GMP_VIO_ADDR                               0x00808
+#define V3D_GMP_VIO_TYPE                               0x0080c
+#define V3D_GMP_TABLE_ADDR                             0x00810
+#define V3D_GMP_CLEAR_LOAD                             0x00814
+#define V3D_GMP_PRESERVE_LOAD                          0x00818
+#define V3D_GMP_VALID_LINES                            0x00820
+
+#endif /* V3D_REGS_H */