1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Copyright (C) 2020 Linaro Ltd |
4 | */ |
5 | |
6 | #ifndef __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H |
7 | #define __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H |
8 | |
9 | #include <linux/soc/qcom/smd-rpm.h> |
10 | |
11 | #include <dt-bindings/interconnect/qcom,rpm-icc.h> |
12 | #include <linux/clk.h> |
13 | #include <linux/interconnect-provider.h> |
14 | #include <linux/platform_device.h> |
15 | |
16 | #define RPM_BUS_MASTER_REQ 0x73616d62 |
17 | #define RPM_BUS_SLAVE_REQ 0x766c7362 |
18 | |
19 | #define to_qcom_provider(_provider) \ |
20 | container_of(_provider, struct qcom_icc_provider, provider) |
21 | |
22 | enum qcom_icc_type { |
23 | QCOM_ICC_NOC, |
24 | QCOM_ICC_BIMC, |
25 | QCOM_ICC_QNOC, |
26 | }; |
27 | |
28 | /** |
29 | * struct rpm_clk_resource - RPM bus clock resource |
30 | * @resource_type: RPM resource type of the clock resource |
31 | * @clock_id: index of the clock resource of a specific resource type |
32 | * @branch: whether the resource represents a branch clock |
33 | */ |
34 | struct rpm_clk_resource { |
35 | u32 resource_type; |
36 | u32 clock_id; |
37 | bool branch; |
38 | }; |
39 | |
40 | /** |
41 | * struct qcom_icc_provider - Qualcomm specific interconnect provider |
42 | * @provider: generic interconnect provider |
43 | * @num_intf_clks: the total number of intf_clks clk_bulk_data entries |
44 | * @type: the ICC provider type |
45 | * @regmap: regmap for QoS registers read/write access |
46 | * @qos_offset: offset to QoS registers |
47 | * @ab_coeff: a percentage-based coefficient for compensating the AB calculations |
48 | * @ib_coeff: an inverse-percentage-based coefficient for compensating the IB calculations |
49 | * @bus_clk_rate: bus clock rate in Hz |
50 | * @bus_clk_desc: a pointer to a rpm_clk_resource description of bus clocks |
51 | * @bus_clk: a pointer to a HLOS-owned bus clock |
52 | * @intf_clks: a clk_bulk_data array of interface clocks |
53 | * @keep_alive: whether to always keep a minimum vote on the bus clocks |
54 | * @is_on: whether the bus is powered on |
55 | */ |
56 | struct qcom_icc_provider { |
57 | struct icc_provider provider; |
58 | int num_intf_clks; |
59 | enum qcom_icc_type type; |
60 | struct regmap *regmap; |
61 | unsigned int qos_offset; |
62 | u16 ab_coeff; |
63 | u16 ib_coeff; |
64 | u32 bus_clk_rate[QCOM_SMD_RPM_STATE_NUM]; |
65 | const struct rpm_clk_resource *bus_clk_desc; |
66 | struct clk *bus_clk; |
67 | struct clk_bulk_data *intf_clks; |
68 | bool keep_alive; |
69 | bool is_on; |
70 | }; |
71 | |
72 | /** |
73 | * struct qcom_icc_qos - Qualcomm specific interconnect QoS parameters |
74 | * @areq_prio: node requests priority |
75 | * @prio_level: priority level for bus communication |
76 | * @limit_commands: activate/deactivate limiter mode during runtime |
77 | * @ap_owned: indicates if the node is owned by the AP or by the RPM |
78 | * @qos_mode: default qos mode for this node |
79 | * @qos_port: qos port number for finding qos registers of this node |
80 | * @urg_fwd_en: enable urgent forwarding |
81 | */ |
82 | struct qcom_icc_qos { |
83 | u32 areq_prio; |
84 | u32 prio_level; |
85 | bool limit_commands; |
86 | bool ap_owned; |
87 | int qos_mode; |
88 | int qos_port; |
89 | bool urg_fwd_en; |
90 | }; |
91 | |
92 | /** |
93 | * struct qcom_icc_node - Qualcomm specific interconnect nodes |
94 | * @name: the node name used in debugfs |
95 | * @id: a unique node identifier |
96 | * @links: an array of nodes where we can go next while traversing |
97 | * @num_links: the total number of @links |
98 | * @channels: number of channels at this node (e.g. DDR channels) |
99 | * @buswidth: width of the interconnect between a node and the bus (bytes) |
100 | * @bus_clk_desc: a pointer to a rpm_clk_resource description of bus clocks |
101 | * @sum_avg: current sum aggregate value of all avg bw requests |
102 | * @max_peak: current max aggregate value of all peak bw requests |
103 | * @mas_rpm_id: RPM id for devices that are bus masters |
104 | * @slv_rpm_id: RPM id for devices that are bus slaves |
105 | * @qos: NoC QoS setting parameters |
106 | * @ab_coeff: a percentage-based coefficient for compensating the AB calculations |
107 | * @ib_coeff: an inverse-percentage-based coefficient for compensating the IB calculations |
108 | * @bus_clk_rate: a pointer to an array containing bus clock rates in Hz |
109 | */ |
110 | struct qcom_icc_node { |
111 | unsigned char *name; |
112 | u16 id; |
113 | const u16 *links; |
114 | u16 num_links; |
115 | u16 channels; |
116 | u16 buswidth; |
117 | const struct rpm_clk_resource *bus_clk_desc; |
118 | u64 sum_avg[QCOM_SMD_RPM_STATE_NUM]; |
119 | u64 max_peak[QCOM_SMD_RPM_STATE_NUM]; |
120 | int mas_rpm_id; |
121 | int slv_rpm_id; |
122 | struct qcom_icc_qos qos; |
123 | u16 ab_coeff; |
124 | u16 ib_coeff; |
125 | u32 bus_clk_rate[QCOM_SMD_RPM_STATE_NUM]; |
126 | }; |
127 | |
128 | struct qcom_icc_desc { |
129 | struct qcom_icc_node * const *nodes; |
130 | size_t num_nodes; |
131 | const struct rpm_clk_resource *bus_clk_desc; |
132 | const char * const *intf_clocks; |
133 | size_t num_intf_clocks; |
134 | bool keep_alive; |
135 | enum qcom_icc_type type; |
136 | const struct regmap_config *regmap_cfg; |
137 | unsigned int qos_offset; |
138 | u16 ab_coeff; |
139 | u16 ib_coeff; |
140 | }; |
141 | |
142 | /* Valid for all bus types */ |
143 | enum qos_mode { |
144 | NOC_QOS_MODE_INVALID = 0, |
145 | NOC_QOS_MODE_FIXED, |
146 | NOC_QOS_MODE_BYPASS, |
147 | }; |
148 | |
149 | extern const struct rpm_clk_resource aggre1_clk; |
150 | extern const struct rpm_clk_resource aggre2_clk; |
151 | extern const struct rpm_clk_resource bimc_clk; |
152 | extern const struct rpm_clk_resource bus_0_clk; |
153 | extern const struct rpm_clk_resource bus_1_clk; |
154 | extern const struct rpm_clk_resource bus_2_clk; |
155 | extern const struct rpm_clk_resource mem_1_clk; |
156 | extern const struct rpm_clk_resource mmaxi_0_clk; |
157 | extern const struct rpm_clk_resource mmaxi_1_clk; |
158 | extern const struct rpm_clk_resource qup_clk; |
159 | |
160 | extern const struct rpm_clk_resource aggre1_branch_clk; |
161 | extern const struct rpm_clk_resource aggre2_branch_clk; |
162 | |
163 | int qnoc_probe(struct platform_device *pdev); |
164 | void qnoc_remove(struct platform_device *pdev); |
165 | |
166 | bool qcom_icc_rpm_smd_available(void); |
167 | int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val); |
168 | int qcom_icc_rpm_set_bus_rate(const struct rpm_clk_resource *clk, int ctx, u32 rate); |
169 | |
170 | #endif |
171 | |