Adding an mfd driver for the PMCI-based interface of Intel MAX10 BMC
controller.
Co-developed-by: Tianfei zhang <[email protected]>
Signed-off-by: Tianfei zhang <[email protected]>
Co-developed-by: Russ Weight <[email protected]>
Signed-off-by: Russ Weight <[email protected]>
Signed-off-by: Ilpo Järvinen <[email protected]>
---
.../ABI/testing/sysfs-driver-intel-m10-bmc | 8 +-
drivers/mfd/Kconfig | 12 ++
drivers/mfd/Makefile | 1 +
drivers/mfd/intel-m10-bmc-pmci.c | 154 ++++++++++++++++++
include/linux/mfd/intel-m10-bmc.h | 1 +
5 files changed, 172 insertions(+), 4 deletions(-)
create mode 100644 drivers/mfd/intel-m10-bmc-pmci.c
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
index 9773925138af..a8ab58035c95 100644
--- a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
+++ b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
@@ -1,4 +1,4 @@
-What: /sys/bus/spi/devices/.../bmc_version
+What: /sys/bus/.../drivers/intel-m10-bmc/.../bmc_version
Date: June 2020
KernelVersion: 5.10
Contact: Xu Yilun <[email protected]>
@@ -6,7 +6,7 @@ Description: Read only. Returns the hardware build version of Intel
MAX10 BMC chip.
Format: "0x%x".
-What: /sys/bus/spi/devices/.../bmcfw_version
+What: /sys/bus/.../drivers/intel-m10-bmc/.../bmcfw_version
Date: June 2020
KernelVersion: 5.10
Contact: Xu Yilun <[email protected]>
@@ -14,7 +14,7 @@ Description: Read only. Returns the firmware version of Intel MAX10
BMC chip.
Format: "0x%x".
-What: /sys/bus/spi/devices/.../mac_address
+What: /sys/bus/.../drivers/intel-m10-bmc/.../mac_address
Date: January 2021
KernelVersion: 5.12
Contact: Russ Weight <[email protected]>
@@ -25,7 +25,7 @@ Description: Read only. Returns the first MAC address in a block
space.
Format: "%02x:%02x:%02x:%02x:%02x:%02x".
-What: /sys/bus/spi/devices/.../mac_count
+What: /sys/bus/.../drivers/intel-m10-bmc/.../mac_count
Date: January 2021
KernelVersion: 5.12
Contact: Russ Weight <[email protected]>
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index a09d4ac60dc7..38d53f6c4d7b 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -2238,6 +2238,18 @@ config MFD_INTEL_M10_BMC_SPI
additional drivers must be enabled in order to use the functionality
of the device.
+config MFD_INTEL_M10_BMC_PMCI
+ tristate "Intel MAX 10 Board Management Controller with PMCI"
+ depends on FPGA_DFL
+ select MFD_INTEL_M10_BMC_CORE
+ select REGMAP_INDIRECT
+ help
+ Support for the Intel MAX 10 board management controller via PMCI.
+
+ This driver provides common support for accessing the device,
+ additional drivers must be enabled in order to use the functionality
+ of the device.
+
config MFD_RSMU_I2C
tristate "Renesas Synchronization Management Unit with I2C"
depends on I2C && OF
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index f32276cdd0c2..7559362cb438 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -275,6 +275,7 @@ obj-$(CONFIG_MFD_SIMPLE_MFD_I2C) += simple-mfd-i2c.o
intel-m10-bmc-objs := intel-m10-bmc-core.o
obj-$(CONFIG_MFD_INTEL_M10_BMC_CORE) += intel-m10-bmc.o
obj-$(CONFIG_MFD_INTEL_M10_BMC_SPI) += intel-m10-bmc-spi.o
+obj-$(CONFIG_MFD_INTEL_M10_BMC_PMCI) += intel-m10-bmc-pmci.o
obj-$(CONFIG_MFD_ATC260X) += atc260x-core.o
obj-$(CONFIG_MFD_ATC260X_I2C) += atc260x-i2c.o
diff --git a/drivers/mfd/intel-m10-bmc-pmci.c b/drivers/mfd/intel-m10-bmc-pmci.c
new file mode 100644
index 000000000000..918378a78bdb
--- /dev/null
+++ b/drivers/mfd/intel-m10-bmc-pmci.c
@@ -0,0 +1,154 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PMCI-based interface to MAX10 BMC
+ *
+ * Copyright (C) 2020-2022 Intel Corporation, Inc.
+ *
+ */
+
+#include <linux/dfl.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/intel-m10-bmc.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#define M10BMC_PMCI_INDIRECT_BASE 0x400
+
+#define M10BMC_PMCI_SYS_BASE 0x0
+#define M10BMC_PMCI_SYS_END 0xfff
+
+#define M10BMC_PMCI_DOORBELL 0x1c0
+#define M10BMC_PMCI_AUTH_RESULT 0x1c4
+
+/* Telemetry registers */
+#define M10BMC_PMCI_TELEM_START 0x400
+#define M10BMC_PMCI_TELEM_END 0x78c
+
+#define M10BMC_PMCI_BUILD_VER 0x0
+#define NIOS2_PMCI_FW_VERSION 0x4
+#define M10BMC_PMCI_MAC_LOW 0x20
+#define M10BMC_PMCI_MAC_HIGH (M10BMC_PMCI_MAC_LOW + 4)
+
+/* Addresses for security related data in FLASH */
+#define PMCI_BMC_REH_ADDR 0x7ffc004
+#define PMCI_BMC_PROG_ADDR 0x7ffc000
+#define PMCI_BMC_PROG_MAGIC 0x5746
+
+#define PMCI_SR_REH_ADDR 0x7ffd004
+#define PMCI_SR_PROG_ADDR 0x7ffd000
+#define PMCI_SR_PROG_MAGIC 0x5253
+
+#define PMCI_PR_REH_ADDR 0x7ffe004
+#define PMCI_PR_PROG_ADDR 0x7ffe000
+#define PMCI_PR_PROG_MAGIC 0x5250
+
+#define PMCI_STAGING_FLASH_COUNT 0x7ff5000
+
+struct pmci_device {
+ void __iomem *base;
+ struct device *dev;
+ struct intel_m10bmc m10bmc;
+};
+
+static const struct regmap_range m10bmc_pmci_regmap_range[] = {
+ regmap_reg_range(M10BMC_PMCI_SYS_BASE, M10BMC_PMCI_SYS_END),
+};
+
+static const struct regmap_access_table m10_access_table = {
+ .yes_ranges = m10bmc_pmci_regmap_range,
+ .n_yes_ranges = ARRAY_SIZE(m10bmc_pmci_regmap_range),
+};
+
+static const struct regmap_indirect_cfg indirect_cfg = {
+ INTEL_M10_REGMAP_INDIRECT_CFG,
+};
+
+static struct regmap_config m10bmc_pmci_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .wr_table = &m10_access_table,
+ .rd_table = &m10_access_table,
+ .max_register = M10BMC_PMCI_SYS_END,
+ .indirect_cfg = &indirect_cfg,
+};
+
+static struct mfd_cell m10bmc_n6000_bmc_subdevs[] = {
+ { .name = "n6000bmc-hwmon" },
+};
+
+static const struct m10bmc_csr_map m10bmc_pmci_csr_map = {
+ .base = M10BMC_PMCI_SYS_BASE,
+ .build_version = M10BMC_PMCI_BUILD_VER,
+ .fw_version = NIOS2_PMCI_FW_VERSION,
+ .mac_low = M10BMC_PMCI_MAC_LOW,
+ .mac_high = M10BMC_PMCI_MAC_HIGH,
+ .doorbell = M10BMC_PMCI_DOORBELL,
+ .auth_result = M10BMC_PMCI_AUTH_RESULT,
+ .bmc_prog_addr = PMCI_BMC_PROG_ADDR,
+ .bmc_reh_addr = PMCI_BMC_REH_ADDR,
+ .bmc_magic = PMCI_BMC_PROG_MAGIC,
+ .sr_prog_addr = PMCI_SR_PROG_ADDR,
+ .sr_reh_addr = PMCI_SR_REH_ADDR,
+ .sr_magic = PMCI_SR_PROG_MAGIC,
+ .pr_prog_addr = PMCI_PR_PROG_ADDR,
+ .pr_reh_addr = PMCI_PR_REH_ADDR,
+ .pr_magic = PMCI_PR_PROG_MAGIC,
+ .rsu_update_counter = PMCI_STAGING_FLASH_COUNT,
+};
+
+static const struct intel_m10bmc_platform_info m10bmc_m10_n6000 = {
+ .type = M10_N6000,
+ .cells = m10bmc_n6000_bmc_subdevs,
+ .n_cells = ARRAY_SIZE(m10bmc_n6000_bmc_subdevs),
+ .csr_map = &m10bmc_pmci_csr_map,
+};
+
+static int pmci_probe(struct dfl_device *ddev)
+{
+ struct device *dev = &ddev->dev;
+ struct pmci_device *pmci;
+
+ pmci = devm_kzalloc(dev, sizeof(*pmci), GFP_KERNEL);
+ if (!pmci)
+ return -ENOMEM;
+
+ pmci->m10bmc.dev = dev;
+ pmci->dev = dev;
+
+ pmci->base = devm_ioremap_resource(dev, &ddev->mmio_res);
+ if (IS_ERR(pmci->base))
+ return PTR_ERR(pmci->base);
+
+ pmci->m10bmc.regmap =
+ devm_regmap_init_indirect(dev,
+ pmci->base + M10BMC_PMCI_INDIRECT_BASE,
+ &m10bmc_pmci_regmap_config);
+ if (IS_ERR(pmci->m10bmc.regmap))
+ return PTR_ERR(pmci->m10bmc.regmap);
+
+ return m10bmc_dev_init(&pmci->m10bmc, &m10bmc_m10_n6000);
+}
+
+#define FME_FEATURE_ID_PMCI_BMC 0x12
+
+static const struct dfl_device_id pmci_ids[] = {
+ { FME_ID, FME_FEATURE_ID_PMCI_BMC },
+ { }
+};
+MODULE_DEVICE_TABLE(dfl, pmci_ids);
+
+static struct dfl_driver pmci_driver = {
+ .drv = {
+ .name = "intel-m10-bmc",
+ .dev_groups = m10bmc_dev_groups,
+ },
+ .id_table = pmci_ids,
+ .probe = pmci_probe,
+};
+
+module_dfl_driver(pmci_driver);
+
+MODULE_DESCRIPTION("MAX10 BMC PMCI-based interface");
+MODULE_AUTHOR("Intel Corporation");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/intel-m10-bmc.h b/include/linux/mfd/intel-m10-bmc.h
index 1b907c1a176f..90f2a691ef46 100644
--- a/include/linux/mfd/intel-m10-bmc.h
+++ b/include/linux/mfd/intel-m10-bmc.h
@@ -13,6 +13,7 @@ enum m10bmc_type {
M10_N3000,
M10_D5005,
M10_N5010,
+ M10_N6000,
};
#define INTEL_M10_REGMAP_INDIRECT_CFG \
--
2.30.2
On 2022-11-08 at 16:43:03 +0200, Ilpo J?rvinen wrote:
> Adding an mfd driver for the PMCI-based interface of Intel MAX10 BMC
> controller.
Could you help describe what is PMCI? Also add the description somewhere
in code.
>
> Co-developed-by: Tianfei zhang <[email protected]>
> Signed-off-by: Tianfei zhang <[email protected]>
> Co-developed-by: Russ Weight <[email protected]>
> Signed-off-by: Russ Weight <[email protected]>
> Signed-off-by: Ilpo J?rvinen <[email protected]>
> ---
> .../ABI/testing/sysfs-driver-intel-m10-bmc | 8 +-
> drivers/mfd/Kconfig | 12 ++
> drivers/mfd/Makefile | 1 +
> drivers/mfd/intel-m10-bmc-pmci.c | 154 ++++++++++++++++++
> include/linux/mfd/intel-m10-bmc.h | 1 +
> 5 files changed, 172 insertions(+), 4 deletions(-)
> create mode 100644 drivers/mfd/intel-m10-bmc-pmci.c
>
> diff --git a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
> index 9773925138af..a8ab58035c95 100644
> --- a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
> +++ b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
> @@ -1,4 +1,4 @@
> -What: /sys/bus/spi/devices/.../bmc_version
> +What: /sys/bus/.../drivers/intel-m10-bmc/.../bmc_version
It's good. And could you add in commit message about why the changes to the ABI
description.
> Date: June 2020
> KernelVersion: 5.10
> Contact: Xu Yilun <[email protected]>
> @@ -6,7 +6,7 @@ Description: Read only. Returns the hardware build version of Intel
> MAX10 BMC chip.
> Format: "0x%x".
>
> -What: /sys/bus/spi/devices/.../bmcfw_version
> +What: /sys/bus/.../drivers/intel-m10-bmc/.../bmcfw_version
> Date: June 2020
> KernelVersion: 5.10
> Contact: Xu Yilun <[email protected]>
> @@ -14,7 +14,7 @@ Description: Read only. Returns the firmware version of Intel MAX10
> BMC chip.
> Format: "0x%x".
>
> -What: /sys/bus/spi/devices/.../mac_address
> +What: /sys/bus/.../drivers/intel-m10-bmc/.../mac_address
> Date: January 2021
> KernelVersion: 5.12
> Contact: Russ Weight <[email protected]>
> @@ -25,7 +25,7 @@ Description: Read only. Returns the first MAC address in a block
> space.
> Format: "%02x:%02x:%02x:%02x:%02x:%02x".
>
> -What: /sys/bus/spi/devices/.../mac_count
> +What: /sys/bus/.../drivers/intel-m10-bmc/.../mac_count
> Date: January 2021
> KernelVersion: 5.12
> Contact: Russ Weight <[email protected]>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index a09d4ac60dc7..38d53f6c4d7b 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -2238,6 +2238,18 @@ config MFD_INTEL_M10_BMC_SPI
> additional drivers must be enabled in order to use the functionality
> of the device.
>
> +config MFD_INTEL_M10_BMC_PMCI
> + tristate "Intel MAX 10 Board Management Controller with PMCI"
> + depends on FPGA_DFL
> + select MFD_INTEL_M10_BMC_CORE
> + select REGMAP_INDIRECT
> + help
> + Support for the Intel MAX 10 board management controller via PMCI.
> +
> + This driver provides common support for accessing the device,
> + additional drivers must be enabled in order to use the functionality
> + of the device.
> +
> config MFD_RSMU_I2C
> tristate "Renesas Synchronization Management Unit with I2C"
> depends on I2C && OF
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index f32276cdd0c2..7559362cb438 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -275,6 +275,7 @@ obj-$(CONFIG_MFD_SIMPLE_MFD_I2C) += simple-mfd-i2c.o
> intel-m10-bmc-objs := intel-m10-bmc-core.o
> obj-$(CONFIG_MFD_INTEL_M10_BMC_CORE) += intel-m10-bmc.o
> obj-$(CONFIG_MFD_INTEL_M10_BMC_SPI) += intel-m10-bmc-spi.o
> +obj-$(CONFIG_MFD_INTEL_M10_BMC_PMCI) += intel-m10-bmc-pmci.o
>
> obj-$(CONFIG_MFD_ATC260X) += atc260x-core.o
> obj-$(CONFIG_MFD_ATC260X_I2C) += atc260x-i2c.o
> diff --git a/drivers/mfd/intel-m10-bmc-pmci.c b/drivers/mfd/intel-m10-bmc-pmci.c
> new file mode 100644
> index 000000000000..918378a78bdb
> --- /dev/null
> +++ b/drivers/mfd/intel-m10-bmc-pmci.c
> @@ -0,0 +1,154 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * PMCI-based interface to MAX10 BMC
> + *
> + * Copyright (C) 2020-2022 Intel Corporation, Inc.
> + *
> + */
> +
> +#include <linux/dfl.h>
> +#include <linux/mfd/core.h>
> +#include <linux/mfd/intel-m10-bmc.h>
> +#include <linux/module.h>
> +#include <linux/regmap.h>
> +
> +#define M10BMC_PMCI_INDIRECT_BASE 0x400
> +
> +#define M10BMC_PMCI_SYS_BASE 0x0
> +#define M10BMC_PMCI_SYS_END 0xfff
> +
> +#define M10BMC_PMCI_DOORBELL 0x1c0
> +#define M10BMC_PMCI_AUTH_RESULT 0x1c4
> +
> +/* Telemetry registers */
> +#define M10BMC_PMCI_TELEM_START 0x400
> +#define M10BMC_PMCI_TELEM_END 0x78c
> +
> +#define M10BMC_PMCI_BUILD_VER 0x0
> +#define NIOS2_PMCI_FW_VERSION 0x4
> +#define M10BMC_PMCI_MAC_LOW 0x20
> +#define M10BMC_PMCI_MAC_HIGH (M10BMC_PMCI_MAC_LOW + 4)
> +
> +/* Addresses for security related data in FLASH */
> +#define PMCI_BMC_REH_ADDR 0x7ffc004
> +#define PMCI_BMC_PROG_ADDR 0x7ffc000
> +#define PMCI_BMC_PROG_MAGIC 0x5746
> +
> +#define PMCI_SR_REH_ADDR 0x7ffd004
> +#define PMCI_SR_PROG_ADDR 0x7ffd000
> +#define PMCI_SR_PROG_MAGIC 0x5253
> +
> +#define PMCI_PR_REH_ADDR 0x7ffe004
> +#define PMCI_PR_PROG_ADDR 0x7ffe000
> +#define PMCI_PR_PROG_MAGIC 0x5250
> +
> +#define PMCI_STAGING_FLASH_COUNT 0x7ff5000
> +
> +struct pmci_device {
> + void __iomem *base;
> + struct device *dev;
> + struct intel_m10bmc m10bmc;
> +};
> +
> +static const struct regmap_range m10bmc_pmci_regmap_range[] = {
> + regmap_reg_range(M10BMC_PMCI_SYS_BASE, M10BMC_PMCI_SYS_END),
> +};
> +
> +static const struct regmap_access_table m10_access_table = {
> + .yes_ranges = m10bmc_pmci_regmap_range,
> + .n_yes_ranges = ARRAY_SIZE(m10bmc_pmci_regmap_range),
> +};
> +
> +static const struct regmap_indirect_cfg indirect_cfg = {
> + INTEL_M10_REGMAP_INDIRECT_CFG,
> +};
> +
> +static struct regmap_config m10bmc_pmci_regmap_config = {
> + .reg_bits = 32,
> + .reg_stride = 4,
> + .val_bits = 32,
> + .wr_table = &m10_access_table,
> + .rd_table = &m10_access_table,
> + .max_register = M10BMC_PMCI_SYS_END,
> + .indirect_cfg = &indirect_cfg,
> +};
> +
> +static struct mfd_cell m10bmc_n6000_bmc_subdevs[] = {
> + { .name = "n6000bmc-hwmon" },
> +};
> +
> +static const struct m10bmc_csr_map m10bmc_pmci_csr_map = {
> + .base = M10BMC_PMCI_SYS_BASE,
> + .build_version = M10BMC_PMCI_BUILD_VER,
> + .fw_version = NIOS2_PMCI_FW_VERSION,
> + .mac_low = M10BMC_PMCI_MAC_LOW,
> + .mac_high = M10BMC_PMCI_MAC_HIGH,
> + .doorbell = M10BMC_PMCI_DOORBELL,
> + .auth_result = M10BMC_PMCI_AUTH_RESULT,
> + .bmc_prog_addr = PMCI_BMC_PROG_ADDR,
> + .bmc_reh_addr = PMCI_BMC_REH_ADDR,
> + .bmc_magic = PMCI_BMC_PROG_MAGIC,
> + .sr_prog_addr = PMCI_SR_PROG_ADDR,
> + .sr_reh_addr = PMCI_SR_REH_ADDR,
> + .sr_magic = PMCI_SR_PROG_MAGIC,
> + .pr_prog_addr = PMCI_PR_PROG_ADDR,
> + .pr_reh_addr = PMCI_PR_REH_ADDR,
> + .pr_magic = PMCI_PR_PROG_MAGIC,
> + .rsu_update_counter = PMCI_STAGING_FLASH_COUNT,
> +};
> +
> +static const struct intel_m10bmc_platform_info m10bmc_m10_n6000 = {
> + .type = M10_N6000,
> + .cells = m10bmc_n6000_bmc_subdevs,
> + .n_cells = ARRAY_SIZE(m10bmc_n6000_bmc_subdevs),
> + .csr_map = &m10bmc_pmci_csr_map,
> +};
> +
> +static int pmci_probe(struct dfl_device *ddev)
> +{
> + struct device *dev = &ddev->dev;
> + struct pmci_device *pmci;
> +
> + pmci = devm_kzalloc(dev, sizeof(*pmci), GFP_KERNEL);
> + if (!pmci)
> + return -ENOMEM;
> +
> + pmci->m10bmc.dev = dev;
> + pmci->dev = dev;
I don't see its usage.
> +
> + pmci->base = devm_ioremap_resource(dev, &ddev->mmio_res);
> + if (IS_ERR(pmci->base))
> + return PTR_ERR(pmci->base);
> +
> + pmci->m10bmc.regmap =
> + devm_regmap_init_indirect(dev,
> + pmci->base + M10BMC_PMCI_INDIRECT_BASE,
> + &m10bmc_pmci_regmap_config);
> + if (IS_ERR(pmci->m10bmc.regmap))
> + return PTR_ERR(pmci->m10bmc.regmap);
> +
> + return m10bmc_dev_init(&pmci->m10bmc, &m10bmc_m10_n6000);
> +}
> +
> +#define FME_FEATURE_ID_PMCI_BMC 0x12
> +
> +static const struct dfl_device_id pmci_ids[] = {
> + { FME_ID, FME_FEATURE_ID_PMCI_BMC },
> + { }
> +};
> +MODULE_DEVICE_TABLE(dfl, pmci_ids);
> +
> +static struct dfl_driver pmci_driver = {
> + .drv = {
> + .name = "intel-m10-bmc",
> + .dev_groups = m10bmc_dev_groups,
> + },
> + .id_table = pmci_ids,
> + .probe = pmci_probe,
> +};
> +
> +module_dfl_driver(pmci_driver);
Maybe change the name. This is still a MAX10 bmc driver, pmci is just the
interface to max10.
Thanks,
Yilun
> +
> +MODULE_DESCRIPTION("MAX10 BMC PMCI-based interface");
> +MODULE_AUTHOR("Intel Corporation");
> +MODULE_LICENSE("GPL");
> diff --git a/include/linux/mfd/intel-m10-bmc.h b/include/linux/mfd/intel-m10-bmc.h
> index 1b907c1a176f..90f2a691ef46 100644
> --- a/include/linux/mfd/intel-m10-bmc.h
> +++ b/include/linux/mfd/intel-m10-bmc.h
> @@ -13,6 +13,7 @@ enum m10bmc_type {
> M10_N3000,
> M10_D5005,
> M10_N5010,
> + M10_N6000,
> };
>
> #define INTEL_M10_REGMAP_INDIRECT_CFG \
> --
> 2.30.2
>
On Fri, 11 Nov 2022, Xu Yilun wrote:
> On 2022-11-08 at 16:43:03 +0200, Ilpo J?rvinen wrote:
> > +static int pmci_probe(struct dfl_device *ddev)
> > +{
> > + struct device *dev = &ddev->dev;
> > + struct pmci_device *pmci;
> > +
> > + pmci = devm_kzalloc(dev, sizeof(*pmci), GFP_KERNEL);
> > + if (!pmci)
> > + return -ENOMEM;
> > +
> > + pmci->m10bmc.dev = dev;
> > + pmci->dev = dev;
>
> I don't see its usage.
It's used by dev_err() in patch 11/12.
> > + pmci->base = devm_ioremap_resource(dev, &ddev->mmio_res);
> > + if (IS_ERR(pmci->base))
> > + return PTR_ERR(pmci->base);
> > +
> > + pmci->m10bmc.regmap =
> > + devm_regmap_init_indirect(dev,
> > + pmci->base + M10BMC_PMCI_INDIRECT_BASE,
> > + &m10bmc_pmci_regmap_config);
> > + if (IS_ERR(pmci->m10bmc.regmap))
> > + return PTR_ERR(pmci->m10bmc.regmap);
> > +
> > + return m10bmc_dev_init(&pmci->m10bmc, &m10bmc_m10_n6000);
> > +}
> > +
> > +#define FME_FEATURE_ID_PMCI_BMC 0x12
> > +
> > +static const struct dfl_device_id pmci_ids[] = {
> > + { FME_ID, FME_FEATURE_ID_PMCI_BMC },
> > + { }
> > +};
> > +MODULE_DEVICE_TABLE(dfl, pmci_ids);
> > +
> > +static struct dfl_driver pmci_driver = {
> > + .drv = {
> > + .name = "intel-m10-bmc",
> > + .dev_groups = m10bmc_dev_groups,
> > + },
> > + .id_table = pmci_ids,
> > + .probe = pmci_probe,
> > +};
> > +
> > +module_dfl_driver(pmci_driver);
>
> Maybe change the name. This is still a MAX10 bmc driver, pmci is just the
> interface to max10.
I've now improved the naming consistency to basically have m10bmc_pmci_
as the prefix for many things that weren't previously.
--
i.
On 2022-11-11 at 15:16:42 +0200, Ilpo J?rvinen wrote:
> On Fri, 11 Nov 2022, Xu Yilun wrote:
> > On 2022-11-08 at 16:43:03 +0200, Ilpo J?rvinen wrote:
>
> > > +static int pmci_probe(struct dfl_device *ddev)
> > > +{
> > > + struct device *dev = &ddev->dev;
> > > + struct pmci_device *pmci;
> > > +
> > > + pmci = devm_kzalloc(dev, sizeof(*pmci), GFP_KERNEL);
> > > + if (!pmci)
> > > + return -ENOMEM;
> > > +
> > > + pmci->m10bmc.dev = dev;
> > > + pmci->dev = dev;
> >
> > I don't see its usage.
>
> It's used by dev_err() in patch 11/12.
I see. But is m10bmc.dev already good enough for the usage?
Thanks,
Yilun
> -----Original Message-----
> From: Xu, Yilun <[email protected]>
> Sent: Friday, November 11, 2022 6:04 PM
> To: Ilpo J?rvinen <[email protected]>
> Cc: [email protected]; Wu, Hao <[email protected]>; Tom Rix
> <[email protected]>; Moritz Fischer <[email protected]>; Lee Jones <[email protected]>;
> Matthew Gerlach <[email protected]>; Weight, Russell H
> <[email protected]>; Zhang, Tianfei <[email protected]>; Mark
> Brown <[email protected]>; Greg KH <[email protected]>; linux-
> [email protected]
> Subject: Re: [PATCH 10/12] mfd: intel-m10-bmc: Add PMCI driver
>
> On 2022-11-08 at 16:43:03 +0200, Ilpo J?rvinen wrote:
> > Adding an mfd driver for the PMCI-based interface of Intel MAX10 BMC
> > controller.
>
> Could you help describe what is PMCI? Also add the description somewhere in code.
This patch has a brief introduction of PMCI.
https://patchwork.kernel.org/project/linux-fpga/patch/[email protected]/
>
> >
> > Co-developed-by: Tianfei zhang <[email protected]>
> > Signed-off-by: Tianfei zhang <[email protected]>
> > Co-developed-by: Russ Weight <[email protected]>
> > Signed-off-by: Russ Weight <[email protected]>
> > Signed-off-by: Ilpo J?rvinen <[email protected]>
> > ---
> > .../ABI/testing/sysfs-driver-intel-m10-bmc | 8 +-
> > drivers/mfd/Kconfig | 12 ++
> > drivers/mfd/Makefile | 1 +
> > drivers/mfd/intel-m10-bmc-pmci.c | 154 ++++++++++++++++++
> > include/linux/mfd/intel-m10-bmc.h | 1 +
> > 5 files changed, 172 insertions(+), 4 deletions(-) create mode
> > 100644 drivers/mfd/intel-m10-bmc-pmci.c
> >
> > diff --git a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
> > b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
> > index 9773925138af..a8ab58035c95 100644
> > --- a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
> > +++ b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
> > @@ -1,4 +1,4 @@
> > -What: /sys/bus/spi/devices/.../bmc_version
> > +What: /sys/bus/.../drivers/intel-m10-bmc/.../bmc_version
>
> It's good. And could you add in commit message about why the changes to the ABI
> description.
>
> > Date: June 2020
> > KernelVersion: 5.10
> > Contact: Xu Yilun <[email protected]>
> > @@ -6,7 +6,7 @@ Description: Read only. Returns the hardware build
> version of Intel
> > MAX10 BMC chip.
> > Format: "0x%x".
> >
> > -What: /sys/bus/spi/devices/.../bmcfw_version
> > +What: /sys/bus/.../drivers/intel-m10-bmc/.../bmcfw_version
> > Date: June 2020
> > KernelVersion: 5.10
> > Contact: Xu Yilun <[email protected]>
> > @@ -14,7 +14,7 @@ Description: Read only. Returns the firmware version of
> Intel MAX10
> > BMC chip.
> > Format: "0x%x".
> >
> > -What: /sys/bus/spi/devices/.../mac_address
> > +What: /sys/bus/.../drivers/intel-m10-bmc/.../mac_address
> > Date: January 2021
> > KernelVersion: 5.12
> > Contact: Russ Weight <[email protected]>
> > @@ -25,7 +25,7 @@ Description: Read only. Returns the first MAC address in
> a block
> > space.
> > Format: "%02x:%02x:%02x:%02x:%02x:%02x".
> >
> > -What: /sys/bus/spi/devices/.../mac_count
> > +What: /sys/bus/.../drivers/intel-m10-bmc/.../mac_count
> > Date: January 2021
> > KernelVersion: 5.12
> > Contact: Russ Weight <[email protected]>
> > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index
> > a09d4ac60dc7..38d53f6c4d7b 100644
> > --- a/drivers/mfd/Kconfig
> > +++ b/drivers/mfd/Kconfig
> > @@ -2238,6 +2238,18 @@ config MFD_INTEL_M10_BMC_SPI
> > additional drivers must be enabled in order to use the functionality
> > of the device.
> >
> > +config MFD_INTEL_M10_BMC_PMCI
> > + tristate "Intel MAX 10 Board Management Controller with PMCI"
> > + depends on FPGA_DFL
> > + select MFD_INTEL_M10_BMC_CORE
> > + select REGMAP_INDIRECT
> > + help
> > + Support for the Intel MAX 10 board management controller via PMCI.
> > +
> > + This driver provides common support for accessing the device,
> > + additional drivers must be enabled in order to use the functionality
> > + of the device.
> > +
> > config MFD_RSMU_I2C
> > tristate "Renesas Synchronization Management Unit with I2C"
> > depends on I2C && OF
> > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index
> > f32276cdd0c2..7559362cb438 100644
> > --- a/drivers/mfd/Makefile
> > +++ b/drivers/mfd/Makefile
> > @@ -275,6 +275,7 @@ obj-$(CONFIG_MFD_SIMPLE_MFD_I2C) += simple-mfd-
> i2c.o
> > intel-m10-bmc-objs := intel-m10-bmc-core.o
> > obj-$(CONFIG_MFD_INTEL_M10_BMC_CORE) += intel-m10-bmc.o
> > obj-$(CONFIG_MFD_INTEL_M10_BMC_SPI) += intel-m10-bmc-spi.o
> > +obj-$(CONFIG_MFD_INTEL_M10_BMC_PMCI) += intel-m10-bmc-pmci.o
> >
> > obj-$(CONFIG_MFD_ATC260X) += atc260x-core.o
> > obj-$(CONFIG_MFD_ATC260X_I2C) += atc260x-i2c.o
> > diff --git a/drivers/mfd/intel-m10-bmc-pmci.c
> > b/drivers/mfd/intel-m10-bmc-pmci.c
> > new file mode 100644
> > index 000000000000..918378a78bdb
> > --- /dev/null
> > +++ b/drivers/mfd/intel-m10-bmc-pmci.c
> > @@ -0,0 +1,154 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * PMCI-based interface to MAX10 BMC
> > + *
> > + * Copyright (C) 2020-2022 Intel Corporation, Inc.
> > + *
> > + */
> > +
> > +#include <linux/dfl.h>
> > +#include <linux/mfd/core.h>
> > +#include <linux/mfd/intel-m10-bmc.h>
> > +#include <linux/module.h>
> > +#include <linux/regmap.h>
> > +
> > +#define M10BMC_PMCI_INDIRECT_BASE 0x400
> > +
> > +#define M10BMC_PMCI_SYS_BASE 0x0
> > +#define M10BMC_PMCI_SYS_END 0xfff
> > +
> > +#define M10BMC_PMCI_DOORBELL 0x1c0
> > +#define M10BMC_PMCI_AUTH_RESULT 0x1c4
> > +
> > +/* Telemetry registers */
> > +#define M10BMC_PMCI_TELEM_START 0x400
> > +#define M10BMC_PMCI_TELEM_END 0x78c
> > +
> > +#define M10BMC_PMCI_BUILD_VER 0x0
> > +#define NIOS2_PMCI_FW_VERSION 0x4
> > +#define M10BMC_PMCI_MAC_LOW 0x20
> > +#define M10BMC_PMCI_MAC_HIGH (M10BMC_PMCI_MAC_LOW + 4)
> > +
> > +/* Addresses for security related data in FLASH */
> > +#define PMCI_BMC_REH_ADDR 0x7ffc004
> > +#define PMCI_BMC_PROG_ADDR 0x7ffc000
> > +#define PMCI_BMC_PROG_MAGIC 0x5746
> > +
> > +#define PMCI_SR_REH_ADDR 0x7ffd004
> > +#define PMCI_SR_PROG_ADDR 0x7ffd000
> > +#define PMCI_SR_PROG_MAGIC 0x5253
> > +
> > +#define PMCI_PR_REH_ADDR 0x7ffe004
> > +#define PMCI_PR_PROG_ADDR 0x7ffe000
> > +#define PMCI_PR_PROG_MAGIC 0x5250
> > +
> > +#define PMCI_STAGING_FLASH_COUNT 0x7ff5000
> > +
> > +struct pmci_device {
> > + void __iomem *base;
> > + struct device *dev;
> > + struct intel_m10bmc m10bmc;
> > +};
> > +
> > +static const struct regmap_range m10bmc_pmci_regmap_range[] = {
> > + regmap_reg_range(M10BMC_PMCI_SYS_BASE, M10BMC_PMCI_SYS_END),
> };
> > +
> > +static const struct regmap_access_table m10_access_table = {
> > + .yes_ranges = m10bmc_pmci_regmap_range,
> > + .n_yes_ranges = ARRAY_SIZE(m10bmc_pmci_regmap_range),
> > +};
> > +
> > +static const struct regmap_indirect_cfg indirect_cfg = {
> > + INTEL_M10_REGMAP_INDIRECT_CFG,
> > +};
> > +
> > +static struct regmap_config m10bmc_pmci_regmap_config = {
> > + .reg_bits = 32,
> > + .reg_stride = 4,
> > + .val_bits = 32,
> > + .wr_table = &m10_access_table,
> > + .rd_table = &m10_access_table,
> > + .max_register = M10BMC_PMCI_SYS_END,
> > + .indirect_cfg = &indirect_cfg,
> > +};
> > +
> > +static struct mfd_cell m10bmc_n6000_bmc_subdevs[] = {
> > + { .name = "n6000bmc-hwmon" },
> > +};
> > +
> > +static const struct m10bmc_csr_map m10bmc_pmci_csr_map = {
> > + .base = M10BMC_PMCI_SYS_BASE,
> > + .build_version = M10BMC_PMCI_BUILD_VER,
> > + .fw_version = NIOS2_PMCI_FW_VERSION,
> > + .mac_low = M10BMC_PMCI_MAC_LOW,
> > + .mac_high = M10BMC_PMCI_MAC_HIGH,
> > + .doorbell = M10BMC_PMCI_DOORBELL,
> > + .auth_result = M10BMC_PMCI_AUTH_RESULT,
> > + .bmc_prog_addr = PMCI_BMC_PROG_ADDR,
> > + .bmc_reh_addr = PMCI_BMC_REH_ADDR,
> > + .bmc_magic = PMCI_BMC_PROG_MAGIC,
> > + .sr_prog_addr = PMCI_SR_PROG_ADDR,
> > + .sr_reh_addr = PMCI_SR_REH_ADDR,
> > + .sr_magic = PMCI_SR_PROG_MAGIC,
> > + .pr_prog_addr = PMCI_PR_PROG_ADDR,
> > + .pr_reh_addr = PMCI_PR_REH_ADDR,
> > + .pr_magic = PMCI_PR_PROG_MAGIC,
> > + .rsu_update_counter = PMCI_STAGING_FLASH_COUNT, };
> > +
> > +static const struct intel_m10bmc_platform_info m10bmc_m10_n6000 = {
> > + .type = M10_N6000,
> > + .cells = m10bmc_n6000_bmc_subdevs,
> > + .n_cells = ARRAY_SIZE(m10bmc_n6000_bmc_subdevs),
> > + .csr_map = &m10bmc_pmci_csr_map,
> > +};
> > +
> > +static int pmci_probe(struct dfl_device *ddev) {
> > + struct device *dev = &ddev->dev;
> > + struct pmci_device *pmci;
> > +
> > + pmci = devm_kzalloc(dev, sizeof(*pmci), GFP_KERNEL);
> > + if (!pmci)
> > + return -ENOMEM;
> > +
> > + pmci->m10bmc.dev = dev;
> > + pmci->dev = dev;
>
> I don't see its usage.
>
> > +
> > + pmci->base = devm_ioremap_resource(dev, &ddev->mmio_res);
> > + if (IS_ERR(pmci->base))
> > + return PTR_ERR(pmci->base);
> > +
> > + pmci->m10bmc.regmap =
> > + devm_regmap_init_indirect(dev,
> > + pmci->base +
> M10BMC_PMCI_INDIRECT_BASE,
> > + &m10bmc_pmci_regmap_config);
> > + if (IS_ERR(pmci->m10bmc.regmap))
> > + return PTR_ERR(pmci->m10bmc.regmap);
> > +
> > + return m10bmc_dev_init(&pmci->m10bmc, &m10bmc_m10_n6000); }
> > +
> > +#define FME_FEATURE_ID_PMCI_BMC 0x12
> > +
> > +static const struct dfl_device_id pmci_ids[] = {
> > + { FME_ID, FME_FEATURE_ID_PMCI_BMC },
> > + { }
> > +};
> > +MODULE_DEVICE_TABLE(dfl, pmci_ids);
> > +
> > +static struct dfl_driver pmci_driver = {
> > + .drv = {
> > + .name = "intel-m10-bmc",
> > + .dev_groups = m10bmc_dev_groups,
> > + },
> > + .id_table = pmci_ids,
> > + .probe = pmci_probe,
> > +};
> > +
> > +module_dfl_driver(pmci_driver);
>
> Maybe change the name. This is still a MAX10 bmc driver, pmci is just the interface to
> max10.
>
> Thanks,
> Yilun
>
> > +
> > +MODULE_DESCRIPTION("MAX10 BMC PMCI-based interface");
> > +MODULE_AUTHOR("Intel Corporation"); MODULE_LICENSE("GPL");
> > diff --git a/include/linux/mfd/intel-m10-bmc.h
> > b/include/linux/mfd/intel-m10-bmc.h
> > index 1b907c1a176f..90f2a691ef46 100644
> > --- a/include/linux/mfd/intel-m10-bmc.h
> > +++ b/include/linux/mfd/intel-m10-bmc.h
> > @@ -13,6 +13,7 @@ enum m10bmc_type {
> > M10_N3000,
> > M10_D5005,
> > M10_N5010,
> > + M10_N6000,
> > };
> >
> > #define INTEL_M10_REGMAP_INDIRECT_CFG \
> > --
> > 2.30.2
> >