diff options
Diffstat (limited to 'drivers/firmware/scmi/sandbox-scmi_agent.c')
| -rw-r--r-- | drivers/firmware/scmi/sandbox-scmi_agent.c | 117 |
1 files changed, 112 insertions, 5 deletions
diff --git a/drivers/firmware/scmi/sandbox-scmi_agent.c b/drivers/firmware/scmi/sandbox-scmi_agent.c index ff59098..5b6a423 100644 --- a/drivers/firmware/scmi/sandbox-scmi_agent.c +++ b/drivers/firmware/scmi/sandbox-scmi_agent.c @@ -18,19 +18,20 @@ * processing. It simulates few of the SCMI services for some of the * SCMI protocols embedded in U-Boot. Currently: * - SCMI clock protocol: emulate 2 agents each exposing few clocks + * - SCMI reset protocol: emulate 1 agents each exposing a reset * - * Agent #0 simulates 2 clocks. - * See IDs in scmi0_clk[] and "sandbox-scmi-agent@0" in test.dts. + * Agent #0 simulates 2 clocks and 1 reset domain. + * See IDs in scmi0_clk[]/scmi0_reset[] and "sandbox-scmi-agent@0" in test.dts. * * Agent #1 simulates 1 clock. * See IDs in scmi1_clk[] and "sandbox-scmi-agent@1" in test.dts. * - * All clocks are default disabled. + * All clocks are default disabled and reset levels down. * * This Driver exports sandbox_scmi_service_ct() for the test sequence to * get the state of the simulated services (clock state, rate, ...) and * check back-end device state reflects the request send through the - * various uclass devices, currently only clock controllers. + * various uclass devices, as clocks and reset controllers. */ #define SANDBOX_SCMI_AGENT_COUNT 2 @@ -40,6 +41,10 @@ static struct sandbox_scmi_clk scmi0_clk[] = { { .id = 3, .rate = 333 }, }; +static struct sandbox_scmi_reset scmi0_reset[] = { + { .id = 3 }, +}; + static struct sandbox_scmi_clk scmi1_clk[] = { { .id = 1, .rate = 44 }, }; @@ -71,6 +76,11 @@ static void debug_print_agent_state(struct udevice *dev, char *str) agent->clk_count > 1 ? agent->clk[1].rate : -1, agent->clk_count > 2 ? agent->clk[2].enabled : -1, agent->clk_count > 2 ? agent->clk[2].rate : -1); + dev_dbg(dev, " scmi%u_reset (%zu): %d, %d, ...\n", + agent->idx, + agent->reset_count, + agent->reset_count ? agent->reset[0].asserted : -1, + agent->reset_count > 1 ? agent->reset[1].asserted : -1); }; static struct sandbox_scmi_clk *get_scmi_clk_state(uint agent_id, uint clock_id) @@ -99,6 +109,20 @@ static struct sandbox_scmi_clk *get_scmi_clk_state(uint agent_id, uint clock_id) return NULL; } +static struct sandbox_scmi_reset *get_scmi_reset_state(uint agent_id, + uint reset_id) +{ + size_t n; + + if (agent_id == 0) { + for (n = 0; n < ARRAY_SIZE(scmi0_reset); n++) + if (scmi0_reset[n].id == reset_id) + return scmi0_reset + n; + } + + return NULL; +} + /* * Sandbox SCMI agent ops */ @@ -194,6 +218,78 @@ static int sandbox_scmi_clock_gate(struct udevice *dev, struct scmi_msg *msg) return 0; } +static int sandbox_scmi_rd_attribs(struct udevice *dev, struct scmi_msg *msg) +{ + struct sandbox_scmi_agent *agent = dev_get_priv(dev); + struct scmi_rd_attr_in *in = NULL; + struct scmi_rd_attr_out *out = NULL; + struct sandbox_scmi_reset *reset_state = NULL; + + if (!msg->in_msg || msg->in_msg_sz < sizeof(*in) || + !msg->out_msg || msg->out_msg_sz < sizeof(*out)) + return -EINVAL; + + in = (struct scmi_rd_attr_in *)msg->in_msg; + out = (struct scmi_rd_attr_out *)msg->out_msg; + + reset_state = get_scmi_reset_state(agent->idx, in->domain_id); + if (!reset_state) { + dev_err(dev, "Unexpected reset domain ID %u\n", in->domain_id); + + out->status = SCMI_NOT_FOUND; + } else { + memset(out, 0, sizeof(*out)); + snprintf(out->name, sizeof(out->name), "rd%u", in->domain_id); + + out->status = SCMI_SUCCESS; + } + + return 0; +} + +static int sandbox_scmi_rd_reset(struct udevice *dev, struct scmi_msg *msg) +{ + struct sandbox_scmi_agent *agent = dev_get_priv(dev); + struct scmi_rd_reset_in *in = NULL; + struct scmi_rd_reset_out *out = NULL; + struct sandbox_scmi_reset *reset_state = NULL; + + if (!msg->in_msg || msg->in_msg_sz < sizeof(*in) || + !msg->out_msg || msg->out_msg_sz < sizeof(*out)) + return -EINVAL; + + in = (struct scmi_rd_reset_in *)msg->in_msg; + out = (struct scmi_rd_reset_out *)msg->out_msg; + + reset_state = get_scmi_reset_state(agent->idx, in->domain_id); + if (!reset_state) { + dev_err(dev, "Unexpected reset domain ID %u\n", in->domain_id); + + out->status = SCMI_NOT_FOUND; + } else if (in->reset_state > 1) { + dev_err(dev, "Invalid reset domain input attribute value\n"); + + out->status = SCMI_INVALID_PARAMETERS; + } else { + if (in->flags & SCMI_RD_RESET_FLAG_CYCLE) { + if (in->flags & SCMI_RD_RESET_FLAG_ASYNC) { + out->status = SCMI_NOT_SUPPORTED; + } else { + /* Ends deasserted whatever current state */ + reset_state->asserted = false; + out->status = SCMI_SUCCESS; + } + } else { + reset_state->asserted = in->flags & + SCMI_RD_RESET_FLAG_ASSERT; + + out->status = SCMI_SUCCESS; + } + } + + return 0; +} + static int sandbox_scmi_test_process_msg(struct udevice *dev, struct scmi_msg *msg) { @@ -210,12 +306,21 @@ static int sandbox_scmi_test_process_msg(struct udevice *dev, break; } break; + case SCMI_PROTOCOL_ID_RESET_DOMAIN: + switch (msg->message_id) { + case SCMI_RESET_DOMAIN_ATTRIBUTES: + return sandbox_scmi_rd_attribs(dev, msg); + case SCMI_RESET_DOMAIN_RESET: + return sandbox_scmi_rd_reset(dev, msg); + default: + break; + } + break; case SCMI_PROTOCOL_ID_BASE: case SCMI_PROTOCOL_ID_POWER_DOMAIN: case SCMI_PROTOCOL_ID_SYSTEM: case SCMI_PROTOCOL_ID_PERF: case SCMI_PROTOCOL_ID_SENSOR: - case SCMI_PROTOCOL_ID_RESET_DOMAIN: *(u32 *)msg->out_msg = SCMI_NOT_SUPPORTED; return 0; default: @@ -260,6 +365,8 @@ static int sandbox_scmi_test_probe(struct udevice *dev) .idx = 0, .clk = scmi0_clk, .clk_count = ARRAY_SIZE(scmi0_clk), + .reset = scmi0_reset, + .reset_count = ARRAY_SIZE(scmi0_reset), }; break; case '1': |