1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
6 #include "dpu_hw_catalog.h"
7 #include "dpu_hw_vbif.h"
9 #define VBIF_VERSION 0x0000
10 #define VBIF_CLK_FORCE_CTRL0 0x0008
11 #define VBIF_CLK_FORCE_CTRL1 0x000C
12 #define VBIF_QOS_REMAP_00 0x0020
13 #define VBIF_QOS_REMAP_01 0x0024
14 #define VBIF_QOS_REMAP_10 0x0028
15 #define VBIF_QOS_REMAP_11 0x002C
16 #define VBIF_WRITE_GATHER_EN 0x00AC
17 #define VBIF_IN_RD_LIM_CONF0 0x00B0
18 #define VBIF_IN_RD_LIM_CONF1 0x00B4
19 #define VBIF_IN_RD_LIM_CONF2 0x00B8
20 #define VBIF_IN_WR_LIM_CONF0 0x00C0
21 #define VBIF_IN_WR_LIM_CONF1 0x00C4
22 #define VBIF_IN_WR_LIM_CONF2 0x00C8
23 #define VBIF_OUT_RD_LIM_CONF0 0x00D0
24 #define VBIF_OUT_WR_LIM_CONF0 0x00D4
25 #define VBIF_OUT_AXI_AMEMTYPE_CONF0 0x0160
26 #define VBIF_OUT_AXI_AMEMTYPE_CONF1 0x0164
27 #define VBIF_XIN_PND_ERR 0x0190
28 #define VBIF_XIN_SRC_ERR 0x0194
29 #define VBIF_XIN_CLR_ERR 0x019C
30 #define VBIF_XIN_HALT_CTRL0 0x0200
31 #define VBIF_XIN_HALT_CTRL1 0x0204
32 #define VBIF_XINL_QOS_RP_REMAP_000 0x0550
33 #define VBIF_XINL_QOS_LVL_REMAP_000 0x0590
35 static void dpu_hw_clear_errors(struct dpu_hw_vbif *vbif,
36 u32 *pnd_errors, u32 *src_errors)
38 struct dpu_hw_blk_reg_map *c;
44 pnd = DPU_REG_READ(c, VBIF_XIN_PND_ERR);
45 src = DPU_REG_READ(c, VBIF_XIN_SRC_ERR);
52 DPU_REG_WRITE(c, VBIF_XIN_CLR_ERR, pnd | src);
55 static void dpu_hw_set_mem_type(struct dpu_hw_vbif *vbif,
56 u32 xin_id, u32 value)
58 struct dpu_hw_blk_reg_map *c;
64 * Assume 4 bits per bit field, 8 fields per 32-bit register so
65 * 16 bit fields maximum across two registers
67 if (!vbif || xin_id >= MAX_XIN_COUNT || xin_id >= 16)
74 reg_off = VBIF_OUT_AXI_AMEMTYPE_CONF1;
76 reg_off = VBIF_OUT_AXI_AMEMTYPE_CONF0;
78 bit_off = (xin_id & 0x7) * 4;
79 reg_val = DPU_REG_READ(c, reg_off);
80 reg_val &= ~(0x7 << bit_off);
81 reg_val |= (value & 0x7) << bit_off;
82 DPU_REG_WRITE(c, reg_off, reg_val);
85 static void dpu_hw_set_limit_conf(struct dpu_hw_vbif *vbif,
86 u32 xin_id, bool rd, u32 limit)
88 struct dpu_hw_blk_reg_map *c = &vbif->hw;
94 reg_off = VBIF_IN_RD_LIM_CONF0;
96 reg_off = VBIF_IN_WR_LIM_CONF0;
98 reg_off += (xin_id / 4) * 4;
99 bit_off = (xin_id % 4) * 8;
100 reg_val = DPU_REG_READ(c, reg_off);
101 reg_val &= ~(0xFF << bit_off);
102 reg_val |= (limit) << bit_off;
103 DPU_REG_WRITE(c, reg_off, reg_val);
106 static u32 dpu_hw_get_limit_conf(struct dpu_hw_vbif *vbif,
109 struct dpu_hw_blk_reg_map *c = &vbif->hw;
116 reg_off = VBIF_IN_RD_LIM_CONF0;
118 reg_off = VBIF_IN_WR_LIM_CONF0;
120 reg_off += (xin_id / 4) * 4;
121 bit_off = (xin_id % 4) * 8;
122 reg_val = DPU_REG_READ(c, reg_off);
123 limit = (reg_val >> bit_off) & 0xFF;
128 static void dpu_hw_set_halt_ctrl(struct dpu_hw_vbif *vbif,
129 u32 xin_id, bool enable)
131 struct dpu_hw_blk_reg_map *c = &vbif->hw;
134 reg_val = DPU_REG_READ(c, VBIF_XIN_HALT_CTRL0);
137 reg_val |= BIT(xin_id);
139 reg_val &= ~BIT(xin_id);
141 DPU_REG_WRITE(c, VBIF_XIN_HALT_CTRL0, reg_val);
144 static bool dpu_hw_get_halt_ctrl(struct dpu_hw_vbif *vbif,
147 struct dpu_hw_blk_reg_map *c = &vbif->hw;
150 reg_val = DPU_REG_READ(c, VBIF_XIN_HALT_CTRL1);
152 return (reg_val & BIT(xin_id)) ? true : false;
155 static void dpu_hw_set_qos_remap(struct dpu_hw_vbif *vbif,
156 u32 xin_id, u32 level, u32 remap_level)
158 struct dpu_hw_blk_reg_map *c;
159 u32 reg_val, reg_val_lvl, mask, reg_high, reg_shift;
166 reg_high = ((xin_id & 0x8) >> 3) * 4 + (level * 8);
167 reg_shift = (xin_id & 0x7) * 4;
169 reg_val = DPU_REG_READ(c, VBIF_XINL_QOS_RP_REMAP_000 + reg_high);
170 reg_val_lvl = DPU_REG_READ(c, VBIF_XINL_QOS_LVL_REMAP_000 + reg_high);
172 mask = 0x7 << reg_shift;
175 reg_val |= (remap_level << reg_shift) & mask;
177 reg_val_lvl &= ~mask;
178 reg_val_lvl |= (remap_level << reg_shift) & mask;
180 DPU_REG_WRITE(c, VBIF_XINL_QOS_RP_REMAP_000 + reg_high, reg_val);
181 DPU_REG_WRITE(c, VBIF_XINL_QOS_LVL_REMAP_000 + reg_high, reg_val_lvl);
184 static void dpu_hw_set_write_gather_en(struct dpu_hw_vbif *vbif, u32 xin_id)
186 struct dpu_hw_blk_reg_map *c;
189 if (!vbif || xin_id >= MAX_XIN_COUNT)
194 reg_val = DPU_REG_READ(c, VBIF_WRITE_GATHER_EN);
195 reg_val |= BIT(xin_id);
196 DPU_REG_WRITE(c, VBIF_WRITE_GATHER_EN, reg_val);
199 static void _setup_vbif_ops(struct dpu_hw_vbif_ops *ops,
202 ops->set_limit_conf = dpu_hw_set_limit_conf;
203 ops->get_limit_conf = dpu_hw_get_limit_conf;
204 ops->set_halt_ctrl = dpu_hw_set_halt_ctrl;
205 ops->get_halt_ctrl = dpu_hw_get_halt_ctrl;
206 if (test_bit(DPU_VBIF_QOS_REMAP, &cap))
207 ops->set_qos_remap = dpu_hw_set_qos_remap;
208 ops->set_mem_type = dpu_hw_set_mem_type;
209 ops->clear_errors = dpu_hw_clear_errors;
210 ops->set_write_gather_en = dpu_hw_set_write_gather_en;
213 static const struct dpu_vbif_cfg *_top_offset(enum dpu_vbif vbif,
214 const struct dpu_mdss_cfg *m,
216 struct dpu_hw_blk_reg_map *b)
220 for (i = 0; i < m->vbif_count; i++) {
221 if (vbif == m->vbif[i].id) {
223 b->blk_off = m->vbif[i].base;
224 b->length = m->vbif[i].len;
225 b->hwversion = m->hwversion;
226 b->log_mask = DPU_DBG_MASK_VBIF;
231 return ERR_PTR(-EINVAL);
234 struct dpu_hw_vbif *dpu_hw_vbif_init(enum dpu_vbif idx,
236 const struct dpu_mdss_cfg *m)
238 struct dpu_hw_vbif *c;
239 const struct dpu_vbif_cfg *cfg;
241 c = kzalloc(sizeof(*c), GFP_KERNEL);
243 return ERR_PTR(-ENOMEM);
245 cfg = _top_offset(idx, m, addr, &c->hw);
246 if (IS_ERR_OR_NULL(cfg)) {
248 return ERR_PTR(-EINVAL);
256 _setup_vbif_ops(&c->ops, c->cap->features);
258 /* no need to register sub-range in dpu dbg, dump entire vbif io base */
263 void dpu_hw_vbif_destroy(struct dpu_hw_vbif *vbif)