#include <linux/errno.h>
#include <linux/init.h>
#include <linux/device.h>
-#include <linux/mfd/core.h>
#include <linux/pm.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#define PLAT_RESOURCE_ISP_IFACE_INDEX 5
#define PLAT_RESOURCE_GTD_DATA_INDEX 6
#define PLAT_RESOURCE_GTD_IFACE_INDEX 7
-#define PLAT_RESOURCE_MEM_MAX_INDEX 8
#define PLAT_RESOURCE_ACPI_IO_INDEX 0
/*
#define TELEM_SSRAM_SIZE 240
#define TELEM_PMC_SSRAM_OFFSET 0x1B00
#define TELEM_PUNIT_SSRAM_OFFSET 0x1A00
+#define TCO_PMC_OFFSET 0x8
+#define TCO_PMC_SIZE 0x4
/* PMC register bit definitions */
int cmd;
struct completion cmd_complete;
+ /* The following PMC BARs share the same ACPI device with the IPC */
+ resource_size_t acpi_io_base;
+ int acpi_io_size;
+ struct platform_device *tco_dev;
+
/* gcr */
void __iomem *gcr_mem_base;
bool has_gcr_regs;
spinlock_t gcr_lock;
+
+ /* 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[] = {
ret = devm_request_irq(&pdev->dev, pdev->irq, ioc, 0, "intel_pmc_ipc",
pmc);
if (ret) {
- dev_err(&pdev->dev, "Failed to request IRQ\n");
+ dev_err(&pdev->dev, "Failed to request irq\n");
return ret;
}
.attrs = intel_ipc_attrs,
};
+static struct resource punit_res_array[] = {
+ /* Punit BIOS */
+ {
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .flags = IORESOURCE_MEM,
+ },
+ /* Punit ISP */
+ {
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .flags = IORESOURCE_MEM,
+ },
+ /* Punit GTD */
+ {
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+#define TCO_RESOURCE_ACPI_IO 0
+#define TCO_RESOURCE_SMI_EN_IO 1
+#define TCO_RESOURCE_GCR_MEM 2
+static struct resource tco_res[] = {
+ /* ACPI - TCO */
+ {
+ .flags = IORESOURCE_IO,
+ },
+ /* ACPI - SMI */
+ {
+ .flags = IORESOURCE_IO,
+ },
+};
+
static struct itco_wdt_platform_data tco_info = {
.name = "Apollo Lake SoC",
.version = 5,
.update_no_reboot_bit = update_no_reboot_bit,
};
-static int ipc_create_punit_device(struct platform_device *pdev)
+#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 resource punit_res[PLAT_RESOURCE_MEM_MAX_INDEX];
- struct mfd_cell punit_cell;
- struct resource *res;
- int mindex, pindex = 0;
-
- for (mindex = 0; mindex <= PLAT_RESOURCE_MEM_MAX_INDEX; mindex++) {
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, mindex);
-
- switch (mindex) {
- /* Get PUNIT resources */
- case PLAT_RESOURCE_BIOS_DATA_INDEX:
- case PLAT_RESOURCE_BIOS_IFACE_INDEX:
- /* BIOS resources are required, so return error if not
- * available
- */
- if (!res) {
- dev_err(&pdev->dev,
- "Failed to get PUNIT MEM resource %d\n",
- pindex);
- return -ENXIO;
- }
- case PLAT_RESOURCE_ISP_DATA_INDEX:
- case PLAT_RESOURCE_ISP_IFACE_INDEX:
- case PLAT_RESOURCE_GTD_DATA_INDEX:
- case PLAT_RESOURCE_GTD_IFACE_INDEX:
- /* if valid resource found, copy the resource to PUNIT
- * resource
- */
- if (res)
- memcpy(&punit_res[pindex], res, sizeof(*res));
- punit_res[pindex].flags = IORESOURCE_MEM;
- dev_dbg(&pdev->dev, "PUNIT memory res: %pR\n",
- &punit_res[pindex]);
- pindex++;
- break;
+ struct platform_device *pdev;
+ const struct platform_device_info pdevinfo = {
+ .parent = ipcdev.dev,
+ .name = PUNIT_DEVICE_NAME,
+ .id = -1,
+ .res = punit_res_array,
+ .num_res = ARRAY_SIZE(punit_res_array),
};
- }
- /* Create PUNIT IPC MFD cell */
- punit_cell.name = PUNIT_DEVICE_NAME;
- punit_cell.num_resources = ARRAY_SIZE(punit_res);
- punit_cell.resources = punit_res;
- punit_cell.ignore_resource_conflicts = 1;
+ pdev = platform_device_register_full(&pdevinfo);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
- return devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
- &punit_cell, 1, NULL, 0, NULL);
+ ipcdev.punit_dev = pdev;
+
+ return 0;
}
-static int ipc_create_wdt_device(struct platform_device *pdev)
+static int ipc_create_tco_device(void)
{
- static struct resource wdt_ipc_res[2];
+ struct platform_device *pdev;
struct resource *res;
- static struct mfd_cell wdt_cell;
-
- /* If we have ACPI based watchdog use that instead, othewise create
- * a MFD cell for iTCO watchdog
- */
- if (acpi_has_watchdog())
- return 0;
+ const struct platform_device_info pdevinfo = {
+ .parent = ipcdev.dev,
+ .name = TCO_DEVICE_NAME,
+ .id = -1,
+ .res = tco_res,
+ .num_res = ARRAY_SIZE(tco_res),
+ .data = &tco_info,
+ .size_data = sizeof(tco_info),
+ };
- /* Get iTCO watchdog resources */
- res = platform_get_resource(pdev, IORESOURCE_IO,
- PLAT_RESOURCE_ACPI_IO_INDEX);
- if (!res) {
- dev_err(&pdev->dev, "Failed to get WDT resource\n");
- return -ENXIO;
- }
+ res = tco_res + TCO_RESOURCE_ACPI_IO;
+ res->start = ipcdev.acpi_io_base + TCO_BASE_OFFSET;
+ res->end = res->start + TCO_REGS_SIZE - 1;
- wdt_ipc_res[0].start = res->start + TCO_BASE_OFFSET;
- wdt_ipc_res[0].end = res->start +
- TCO_BASE_OFFSET + TCO_REGS_SIZE - 1;
- wdt_ipc_res[0].flags = IORESOURCE_IO;
- wdt_ipc_res[1].start = res->start + SMI_EN_OFFSET;
- wdt_ipc_res[1].end = res->start +
- SMI_EN_OFFSET + SMI_EN_SIZE - 1;
- wdt_ipc_res[1].flags = IORESOURCE_IO;
+ res = tco_res + TCO_RESOURCE_SMI_EN_IO;
+ res->start = ipcdev.acpi_io_base + SMI_EN_OFFSET;
+ res->end = res->start + SMI_EN_SIZE - 1;
- dev_dbg(&pdev->dev, "watchdog res 0: %pR\n", &wdt_ipc_res[0]);
- dev_dbg(&pdev->dev, "watchdog res 1: %pR\n", &wdt_ipc_res[1]);
+ pdev = platform_device_register_full(&pdevinfo);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
- wdt_cell.name = TCO_DEVICE_NAME;
- wdt_cell.platform_data = &tco_info;
- wdt_cell.pdata_size = sizeof(tco_info);
- wdt_cell.num_resources = ARRAY_SIZE(wdt_ipc_res);
- wdt_cell.resources = wdt_ipc_res;
- wdt_cell.ignore_resource_conflicts = 1;
+ ipcdev.tco_dev = pdev;
- return devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
- &wdt_cell, 1, NULL, 0, NULL);
+ return 0;
}
-static int ipc_create_telemetry_device(struct platform_device *pdev)
+static int ipc_create_telemetry_device(void)
{
- struct resource telemetry_ipc_res[2];
- struct mfd_cell telemetry_cell;
+ struct platform_device *pdev;
struct resource *res;
+ const struct platform_device_info pdevinfo = {
+ .parent = ipcdev.dev,
+ .name = TELEMETRY_DEVICE_NAME,
+ .id = -1,
+ .res = telemetry_res,
+ .num_res = ARRAY_SIZE(telemetry_res),
+ };
- /* Get telemetry resources */
- res = platform_get_resource(pdev, IORESOURCE_MEM,
- PLAT_RESOURCE_TELEM_SSRAM_INDEX);
- if (!res) {
- dev_err(&pdev->dev, "Failed to get telemetry resource\n");
- return -ENXIO;
- }
+ res = telemetry_res + TELEMETRY_RESOURCE_PUNIT_SSRAM;
+ res->start = ipcdev.telem_punit_ssram_base;
+ res->end = res->start + ipcdev.telem_punit_ssram_size - 1;
- telemetry_ipc_res[0].start = res->start + TELEM_PUNIT_SSRAM_OFFSET;
- telemetry_ipc_res[0].end = res->start +
- TELEM_PUNIT_SSRAM_OFFSET + TELEM_SSRAM_SIZE - 1;
- telemetry_ipc_res[0].flags = IORESOURCE_MEM;
- telemetry_ipc_res[1].start = res->start + TELEM_PMC_SSRAM_OFFSET;
- telemetry_ipc_res[1].end = res->start +
- TELEM_PMC_SSRAM_OFFSET + TELEM_SSRAM_SIZE - 1;
- telemetry_ipc_res[1].flags = IORESOURCE_MEM;
+ res = telemetry_res + TELEMETRY_RESOURCE_PMC_SSRAM;
+ res->start = ipcdev.telem_pmc_ssram_base;
+ res->end = res->start + ipcdev.telem_pmc_ssram_size - 1;
- dev_dbg(&pdev->dev, "Telemetry res 0: %pR\n", &telemetry_ipc_res[0]);
- dev_dbg(&pdev->dev, "Telemetry res 1: %pR\n", &telemetry_ipc_res[1]);
+ pdev = platform_device_register_full(&pdevinfo);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
- telemetry_cell.name = TELEMETRY_DEVICE_NAME;
- telemetry_cell.num_resources = ARRAY_SIZE(telemetry_ipc_res);
- telemetry_cell.resources = telemetry_ipc_res;
- telemetry_cell.ignore_resource_conflicts = 1;
+ ipcdev.telemetry_dev = pdev;
- return devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
- &telemetry_cell, 1, NULL, 0, NULL);
+ return 0;
}
-static int ipc_create_pmc_devices(struct platform_device *pdev)
+static int ipc_create_pmc_devices(void)
{
int ret;
- ret = ipc_create_punit_device(pdev);
- if (ret < 0)
- return ret;
+ /* If we have ACPI based watchdog use that instead */
+ if (!acpi_has_watchdog()) {
+ ret = ipc_create_tco_device();
+ if (ret) {
+ dev_err(ipcdev.dev, "Failed to add tco platform device\n");
+ return ret;
+ }
+ }
- ret = ipc_create_wdt_device(pdev);
- if (ret < 0)
- return ret;
+ ret = ipc_create_punit_device();
+ if (ret) {
+ dev_err(ipcdev.dev, "Failed to add punit platform device\n");
+ platform_device_unregister(ipcdev.tco_dev);
+ }
- ret = ipc_create_telemetry_device(pdev);
- if (ret < 0)
- return ret;
+ if (!ipcdev.telem_res_inval) {
+ ret = ipc_create_telemetry_device();
+ if (ret)
+ dev_warn(ipcdev.dev,
+ "Failed to add telemetry platform device\n");
+ }
- return 0;
+ return ret;
}
static int ipc_plat_get_res(struct platform_device *pdev)
{
- struct resource *res;
+ struct resource *res, *punit_res;
void __iomem *addr;
+ int size;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO,
+ PLAT_RESOURCE_ACPI_IO_INDEX);
+ if (!res) {
+ dev_err(&pdev->dev, "Failed to get io resource\n");
+ return -ENXIO;
+ }
+ size = resource_size(res);
+ ipcdev.acpi_io_base = res->start;
+ ipcdev.acpi_io_size = size;
+ dev_info(&pdev->dev, "io res: %pR\n", res);
- /* Get IPC resources */
+ punit_res = punit_res_array;
+ /* This is index 0 to cover BIOS data register */
res = platform_get_resource(pdev, IORESOURCE_MEM,
- PLAT_RESOURCE_IPC_INDEX);
+ PLAT_RESOURCE_BIOS_DATA_INDEX);
+ if (!res) {
+ dev_err(&pdev->dev, "Failed to get res of punit BIOS data\n");
+ return -ENXIO;
+ }
+ *punit_res = *res;
+ dev_info(&pdev->dev, "punit BIOS data res: %pR\n", res);
+
+ /* This is index 1 to cover BIOS interface register */
+ res = platform_get_resource(pdev, IORESOURCE_MEM,
+ PLAT_RESOURCE_BIOS_IFACE_INDEX);
if (!res) {
- dev_err(&pdev->dev, "Failed to get IPC resources\n");
+ dev_err(&pdev->dev, "Failed to get res of punit BIOS iface\n");
return -ENXIO;
}
+ *++punit_res = *res;
+ dev_info(&pdev->dev, "punit BIOS interface res: %pR\n", res);
+
+ /* This is index 2 to cover ISP data register, optional */
+ res = platform_get_resource(pdev, IORESOURCE_MEM,
+ PLAT_RESOURCE_ISP_DATA_INDEX);
+ ++punit_res;
+ if (res) {
+ *punit_res = *res;
+ dev_info(&pdev->dev, "punit ISP data res: %pR\n", res);
+ }
+
+ /* This is index 3 to cover ISP interface register, optional */
+ res = platform_get_resource(pdev, IORESOURCE_MEM,
+ PLAT_RESOURCE_ISP_IFACE_INDEX);
+ ++punit_res;
+ if (res) {
+ *punit_res = *res;
+ dev_info(&pdev->dev, "punit ISP interface res: %pR\n", res);
+ }
- res->end = res->start +
- PLAT_RESOURCE_IPC_SIZE + PLAT_RESOURCE_GCR_SIZE - 1;
+ /* This is index 4 to cover GTD data register, optional */
+ res = platform_get_resource(pdev, IORESOURCE_MEM,
+ PLAT_RESOURCE_GTD_DATA_INDEX);
+ ++punit_res;
+ if (res) {
+ *punit_res = *res;
+ dev_info(&pdev->dev, "punit GTD data res: %pR\n", res);
+ }
+
+ /* This is index 5 to cover GTD interface register, optional */
+ res = platform_get_resource(pdev, IORESOURCE_MEM,
+ PLAT_RESOURCE_GTD_IFACE_INDEX);
+ ++punit_res;
+ if (res) {
+ *punit_res = *res;
+ dev_info(&pdev->dev, "punit GTD interface res: %pR\n", res);
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM,
+ PLAT_RESOURCE_IPC_INDEX);
+ if (!res) {
+ dev_err(&pdev->dev, "Failed to get ipc resource\n");
+ return -ENXIO;
+ }
+ size = PLAT_RESOURCE_IPC_SIZE + PLAT_RESOURCE_GCR_SIZE;
+ res->end = res->start + size - 1;
addr = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(addr))
return PTR_ERR(addr);
ipcdev.ipc_base = addr;
+
ipcdev.gcr_mem_base = addr + PLAT_RESOURCE_GCR_OFFSET;
- dev_dbg(&pdev->dev, "PMC IPC resource %pR\n", res);
+ 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;
}
ipcdev.irq = platform_get_irq(pdev, 0);
if (ipcdev.irq < 0) {
- dev_err(&pdev->dev, "Failed to get IRQ\n");
+ dev_err(&pdev->dev, "Failed to get irq\n");
return -EINVAL;
}
return ret;
}
- ret = ipc_create_pmc_devices(pdev);
+ ret = ipc_create_pmc_devices();
if (ret) {
- dev_err(&pdev->dev, "Failed to create PMC devices\n");
+ dev_err(&pdev->dev, "Failed to create pmc devices\n");
return ret;
}
- ret = devm_request_irq(&pdev->dev, ipcdev.irq, ioc, IRQF_NO_SUSPEND,
- "intel_pmc_ipc", &ipcdev);
- if (ret) {
- dev_err(&pdev->dev, "Failed to request IRQ\n");
- return ret;
+ if (devm_request_irq(&pdev->dev, ipcdev.irq, ioc, IRQF_NO_SUSPEND,
+ "intel_pmc_ipc", &ipcdev)) {
+ dev_err(&pdev->dev, "Failed to request irq\n");
+ ret = -EBUSY;
+ goto err_irq;
}
ret = sysfs_create_group(&pdev->dev.kobj, &intel_ipc_group);
if (ret) {
dev_err(&pdev->dev, "Failed to create sysfs group %d\n",
ret);
- devm_free_irq(&pdev->dev, ipcdev.irq, &ipcdev);
- return ret;
+ goto err_sys;
}
ipcdev.has_gcr_regs = true;
return 0;
+err_sys:
+ devm_free_irq(&pdev->dev, ipcdev.irq, &ipcdev);
+err_irq:
+ platform_device_unregister(ipcdev.tco_dev);
+ platform_device_unregister(ipcdev.punit_dev);
+ platform_device_unregister(ipcdev.telemetry_dev);
+
+ return ret;
}
static int ipc_plat_remove(struct platform_device *pdev)
{
sysfs_remove_group(&pdev->dev.kobj, &intel_ipc_group);
devm_free_irq(&pdev->dev, ipcdev.irq, &ipcdev);
+ platform_device_unregister(ipcdev.tco_dev);
+ platform_device_unregister(ipcdev.punit_dev);
+ platform_device_unregister(ipcdev.telemetry_dev);
ipcdev.dev = NULL;
-
return 0;
}
ret = platform_driver_register(&ipc_plat_driver);
if (ret) {
- pr_err("Failed to register PMC IPC platform driver\n");
+ pr_err("Failed to register PMC ipc platform driver\n");
return ret;
}
ret = pci_register_driver(&ipc_pci_driver);
if (ret) {
- pr_err("Failed to register PMC IPC PCI driver\n");
+ pr_err("Failed to register PMC ipc pci driver\n");
platform_driver_unregister(&ipc_plat_driver);
return ret;
}
projects / mirror_ubuntu-bionic-kernel.git / commitdiff