diff options
| -rw-r--r-- | drivers/platform/x86/intel_pmc_ipc.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel_pmc_ipc.c b/drivers/platform/x86/intel_pmc_ipc.c index ca69135dc2dc..092519e37de6 100644 --- a/drivers/platform/x86/intel_pmc_ipc.c +++ b/drivers/platform/x86/intel_pmc_ipc.c @@ -70,6 +70,7 @@ #define PLAT_RESOURCE_GCR_SIZE 0x1000 #define PLAT_RESOURCE_BIOS_DATA_INDEX 1 #define PLAT_RESOURCE_BIOS_IFACE_INDEX 2 +#define PLAT_RESOURCE_TELEM_SSRAM_INDEX 3 #define PLAT_RESOURCE_ISP_DATA_INDEX 4 #define PLAT_RESOURCE_ISP_IFACE_INDEX 5 #define PLAT_RESOURCE_GTD_DATA_INDEX 6 @@ -88,6 +89,10 @@ #define TCO_BASE_OFFSET 0x60 #define TCO_REGS_SIZE 16 #define PUNIT_DEVICE_NAME "intel_punit_ipc" +#define TELEMETRY_DEVICE_NAME "intel_telemetry" +#define TELEM_SSRAM_SIZE 240 +#define TELEM_PMC_SSRAM_OFFSET 0x1B00 +#define TELEM_PUNIT_SSRAM_OFFSET 0x1A00 static const int iTCO_version = 3; @@ -110,6 +115,14 @@ static struct intel_pmc_ipc_dev { /* punit */ struct platform_device *punit_dev; + + /* Telemetry */ + resource_size_t telem_pmc_ssram_base; + resource_size_t telem_punit_ssram_base; + int telem_pmc_ssram_size; + int telem_punit_ssram_size; + u8 telem_res_inval; + struct platform_device *telemetry_dev; } ipcdev; static char *ipc_err_sources[] = { @@ -491,6 +504,18 @@ static struct itco_wdt_platform_data tco_info = { .version = 3, }; +#define TELEMETRY_RESOURCE_PUNIT_SSRAM 0 +#define TELEMETRY_RESOURCE_PMC_SSRAM 1 +static struct resource telemetry_res[] = { + /*Telemetry*/ + { + .flags = IORESOURCE_MEM, + }, + { + .flags = IORESOURCE_MEM, + }, +}; + static int ipc_create_punit_device(void) { struct platform_device *pdev; @@ -574,6 +599,51 @@ err: return ret; } +static int ipc_create_telemetry_device(void) +{ + struct platform_device *pdev; + struct resource *res; + int ret; + + pdev = platform_device_alloc(TELEMETRY_DEVICE_NAME, -1); + if (!pdev) { + dev_err(ipcdev.dev, + "Failed to allocate telemetry platform device\n"); + return -ENOMEM; + } + + pdev->dev.parent = ipcdev.dev; + + res = telemetry_res + TELEMETRY_RESOURCE_PUNIT_SSRAM; + res->start = ipcdev.telem_punit_ssram_base; + res->end = res->start + ipcdev.telem_punit_ssram_size - 1; + + res = telemetry_res + TELEMETRY_RESOURCE_PMC_SSRAM; + res->start = ipcdev.telem_pmc_ssram_base; + res->end = res->start + ipcdev.telem_pmc_ssram_size - 1; + + ret = platform_device_add_resources(pdev, telemetry_res, + ARRAY_SIZE(telemetry_res)); + if (ret) { + dev_err(ipcdev.dev, + "Failed to add telemetry platform resources\n"); + goto err; + } + + ret = platform_device_add(pdev); + if (ret) { + dev_err(ipcdev.dev, + "Failed to add telemetry platform device\n"); + goto err; + } + ipcdev.telemetry_dev = pdev; + + return 0; +err: + platform_device_put(pdev); + return ret; +} + static int ipc_create_pmc_devices(void) { int ret; @@ -588,6 +658,14 @@ static int ipc_create_pmc_devices(void) dev_err(ipcdev.dev, "Failed to add punit platform device\n"); platform_device_unregister(ipcdev.tco_dev); } + + if (!ipcdev.telem_res_inval) { + ret = ipc_create_telemetry_device(); + if (ret) + dev_warn(ipcdev.dev, + "Failed to add telemetry platform device\n"); + } + return ret; } @@ -692,6 +770,22 @@ static int ipc_plat_get_res(struct platform_device *pdev) ipcdev.gcr_size = PLAT_RESOURCE_GCR_SIZE; dev_info(&pdev->dev, "ipc res: %pR\n", res); + ipcdev.telem_res_inval = 0; + res = platform_get_resource(pdev, IORESOURCE_MEM, + PLAT_RESOURCE_TELEM_SSRAM_INDEX); + if (!res) { + dev_err(&pdev->dev, "Failed to get telemetry ssram resource\n"); + ipcdev.telem_res_inval = 1; + } else { + ipcdev.telem_punit_ssram_base = res->start + + TELEM_PUNIT_SSRAM_OFFSET; + ipcdev.telem_punit_ssram_size = TELEM_SSRAM_SIZE; + ipcdev.telem_pmc_ssram_base = res->start + + TELEM_PMC_SSRAM_OFFSET; + ipcdev.telem_pmc_ssram_size = TELEM_SSRAM_SIZE; + dev_info(&pdev->dev, "telemetry ssram res: %pR\n", res); + } + return 0; } @@ -749,6 +843,7 @@ err_sys: err_irq: platform_device_unregister(ipcdev.tco_dev); platform_device_unregister(ipcdev.punit_dev); + platform_device_unregister(ipcdev.telemetry_dev); err_device: iounmap(ipcdev.ipc_base); res = platform_get_resource(pdev, IORESOURCE_MEM, @@ -766,6 +861,7 @@ static int ipc_plat_remove(struct platform_device *pdev) free_irq(ipcdev.irq, &ipcdev); platform_device_unregister(ipcdev.tco_dev); platform_device_unregister(ipcdev.punit_dev); + platform_device_unregister(ipcdev.telemetry_dev); iounmap(ipcdev.ipc_base); res = platform_get_resource(pdev, IORESOURCE_MEM, PLAT_RESOURCE_IPC_INDEX); |