HSMP_SET_PCI_RATE, /* 20h Control link rate on PCIe devices */
HSMP_SET_POWER_MODE, /* 21h Select power efficiency profile policy */
HSMP_SET_PSTATE_MAX_MIN, /* 22h Set the max and min DF P-State */
+ HSMP_GET_METRIC_TABLE_VER, /* 23h Get metrics table version */
+ HSMP_GET_METRIC_TABLE, /* 24h Get metrics table */
+ HSMP_GET_METRIC_TABLE_DRAM_ADDR,/* 25h Get metrics table dram address */
HSMP_MSG_ID_MAX,
};
HSMP_GET = 1,
};
+enum hsmp_proto_versions {
+ HSMP_PROTO_VER2 = 2,
+ HSMP_PROTO_VER3,
+ HSMP_PROTO_VER4,
+ HSMP_PROTO_VER5,
+ HSMP_PROTO_VER6
+};
+
struct hsmp_msg_desc {
int num_args;
int response_sz;
* input: args[0] = min df pstate[15:8] + max df pstate[7:0]
*/
{1, 0, HSMP_SET},
+
+ /*
+ * HSMP_GET_METRIC_TABLE_VER, num_args = 0, response_sz = 1
+ * output: args[0] = metrics table version
+ */
+ {0, 1, HSMP_GET},
+
+ /*
+ * HSMP_GET_METRIC_TABLE, num_args = 0, response_sz = 0
+ */
+ {0, 0, HSMP_GET},
+
+ /*
+ * HSMP_GET_METRIC_TABLE_DRAM_ADDR, num_args = 0, response_sz = 2
+ * output: args[0] = lower 32 bits of the address
+ * output: args[1] = upper 32 bits of the address
+ */
+ {0, 2, HSMP_GET},
+};
+
+/* Metrics table (supported only with proto version 6) */
+struct hsmp_metric_table {
+ __u32 accumulation_counter;
+
+ /* TEMPERATURE */
+ __u32 max_socket_temperature;
+ __u32 max_vr_temperature;
+ __u32 max_hbm_temperature;
+ __u64 max_socket_temperature_acc;
+ __u64 max_vr_temperature_acc;
+ __u64 max_hbm_temperature_acc;
+
+ /* POWER */
+ __u32 socket_power_limit;
+ __u32 max_socket_power_limit;
+ __u32 socket_power;
+
+ /* ENERGY */
+ __u64 timestamp;
+ __u64 socket_energy_acc;
+ __u64 ccd_energy_acc;
+ __u64 xcd_energy_acc;
+ __u64 aid_energy_acc;
+ __u64 hbm_energy_acc;
+
+ /* FREQUENCY */
+ __u32 cclk_frequency_limit;
+ __u32 gfxclk_frequency_limit;
+ __u32 fclk_frequency;
+ __u32 uclk_frequency;
+ __u32 socclk_frequency[4];
+ __u32 vclk_frequency[4];
+ __u32 dclk_frequency[4];
+ __u32 lclk_frequency[4];
+ __u64 gfxclk_frequency_acc[8];
+ __u64 cclk_frequency_acc[96];
+
+ /* FREQUENCY RANGE */
+ __u32 max_cclk_frequency;
+ __u32 min_cclk_frequency;
+ __u32 max_gfxclk_frequency;
+ __u32 min_gfxclk_frequency;
+ __u32 fclk_frequency_table[4];
+ __u32 uclk_frequency_table[4];
+ __u32 socclk_frequency_table[4];
+ __u32 vclk_frequency_table[4];
+ __u32 dclk_frequency_table[4];
+ __u32 lclk_frequency_table[4];
+ __u32 max_lclk_dpm_range;
+ __u32 min_lclk_dpm_range;
+
+ /* XGMI */
+ __u32 xgmi_width;
+ __u32 xgmi_bitrate;
+ __u64 xgmi_read_bandwidth_acc[8];
+ __u64 xgmi_write_bandwidth_acc[8];
+
+ /* ACTIVITY */
+ __u32 socket_c0_residency;
+ __u32 socket_gfx_busy;
+ __u32 dram_bandwidth_utilization;
+ __u64 socket_c0_residency_acc;
+ __u64 socket_gfx_busy_acc;
+ __u64 dram_bandwidth_acc;
+ __u32 max_dram_bandwidth;
+ __u64 dram_bandwidth_utilization_acc;
+ __u64 pcie_bandwidth_acc[4];
+
+ /* THROTTLERS */
+ __u32 prochot_residency_acc;
+ __u32 ppt_residency_acc;
+ __u32 socket_thm_residency_acc;
+ __u32 vr_thm_residency_acc;
+ __u32 hbm_thm_residency_acc;
+ __u32 spare;
+
+ /* New items at the end to maintain driver compatibility */
+ __u32 gfxclk_frequency[8];
};
/* Reset to default packing */
#include <linux/semaphore.h>
#define DRIVER_NAME "amd_hsmp"
-#define DRIVER_VERSION "1.0"
+#define DRIVER_VERSION "2.0"
/* HSMP Status / Error codes */
#define HSMP_STATUS_NOT_READY 0x00
#define HSMP_CDEV_NAME "hsmp_cdev"
#define HSMP_DEVNODE_NAME "hsmp"
+#define HSMP_METRICS_TABLE_NAME "metrics_bin"
+
+#define HSMP_ATTR_GRP_NAME_SIZE 10
struct hsmp_socket {
+ struct bin_attribute hsmp_attr;
+ void __iomem *metric_tbl_addr;
struct semaphore hsmp_sem;
+ char name[HSMP_ATTR_GRP_NAME_SIZE];
u16 sock_ind;
};
struct miscdevice hsmp_device;
struct hsmp_socket *sock;
struct device *dev;
+ u32 proto_ver;
u16 num_sockets;
};
.compat_ioctl = hsmp_ioctl,
};
+static ssize_t hsmp_metric_tbl_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buf,
+ loff_t off, size_t count)
+{
+ struct hsmp_socket *sock = bin_attr->private;
+ struct hsmp_message msg = { 0 };
+ int ret;
+
+ /* Do not support lseek(), reads entire metric table */
+ if (count < bin_attr->size) {
+ dev_err(plat_dev.dev, "Wrong buffer size\n");
+ return -EINVAL;
+ }
+
+ if (!sock) {
+ dev_err(plat_dev.dev, "Failed to read attribute private data\n");
+ return -EINVAL;
+ }
+
+ msg.msg_id = HSMP_GET_METRIC_TABLE;
+ msg.sock_ind = sock->sock_ind;
+
+ ret = hsmp_send_message(&msg);
+ if (ret)
+ return ret;
+ memcpy(buf, sock->metric_tbl_addr, bin_attr->size);
+
+ return bin_attr->size;
+}
+
+static int hsmp_get_tbl_dram_base(u16 sock_ind)
+{
+ struct hsmp_socket *sock = &plat_dev.sock[sock_ind];
+ struct hsmp_message msg = { 0 };
+ phys_addr_t dram_addr;
+ int ret;
+
+ msg.sock_ind = sock_ind;
+ msg.response_sz = hsmp_msg_desc_table[HSMP_GET_METRIC_TABLE_DRAM_ADDR].response_sz;
+ msg.msg_id = HSMP_GET_METRIC_TABLE_DRAM_ADDR;
+
+ ret = hsmp_send_message(&msg);
+ if (ret)
+ return ret;
+
+ /*
+ * calculate the metric table DRAM address from lower and upper 32 bits
+ * sent from SMU and ioremap it to virtual address.
+ */
+ dram_addr = msg.args[0] | ((u64)(msg.args[1]) << 32);
+ if (!dram_addr) {
+ dev_err(plat_dev.dev, "Invalid DRAM address for metric table\n");
+ return -ENOMEM;
+ }
+ sock->metric_tbl_addr = devm_ioremap(plat_dev.dev, dram_addr,
+ sizeof(struct hsmp_metric_table));
+ if (!sock->metric_tbl_addr) {
+ dev_err(plat_dev.dev, "Failed to ioremap metric table addr\n");
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+static umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
+ struct bin_attribute *battr, int id)
+{
+ if (plat_dev.proto_ver == HSMP_PROTO_VER6)
+ return battr->attr.mode;
+ else
+ return 0;
+}
+
+static int hsmp_init_metric_tbl_bin_attr(struct bin_attribute **hattrs, u16 sock_ind)
+{
+ struct bin_attribute *hattr = &plat_dev.sock[sock_ind].hsmp_attr;
+
+ sysfs_bin_attr_init(hattr);
+ hattr->attr.name = HSMP_METRICS_TABLE_NAME;
+ hattr->attr.mode = 0444;
+ hattr->read = hsmp_metric_tbl_read;
+ hattr->size = sizeof(struct hsmp_metric_table);
+ hattr->private = &plat_dev.sock[sock_ind];
+ hattrs[0] = hattr;
+
+ if (plat_dev.proto_ver == HSMP_PROTO_VER6)
+ return (hsmp_get_tbl_dram_base(sock_ind));
+ else
+ return 0;
+}
+
+/* One bin sysfs for metrics table*/
+#define NUM_HSMP_ATTRS 1
+
+static int hsmp_create_sysfs_interface(void)
+{
+ const struct attribute_group **hsmp_attr_grps;
+ struct bin_attribute **hsmp_bin_attrs;
+ struct attribute_group *attr_grp;
+ int ret;
+ u16 i;
+
+ /* String formatting is currently limited to u8 sockets */
+ if (WARN_ON(plat_dev.num_sockets > U8_MAX))
+ return -ERANGE;
+
+ hsmp_attr_grps = devm_kzalloc(plat_dev.dev, sizeof(struct attribute_group *) *
+ (plat_dev.num_sockets + 1), GFP_KERNEL);
+ if (!hsmp_attr_grps)
+ return -ENOMEM;
+
+ /* Create a sysfs directory for each socket */
+ for (i = 0; i < plat_dev.num_sockets; i++) {
+ attr_grp = devm_kzalloc(plat_dev.dev, sizeof(struct attribute_group), GFP_KERNEL);
+ if (!attr_grp)
+ return -ENOMEM;
+
+ snprintf(plat_dev.sock[i].name, HSMP_ATTR_GRP_NAME_SIZE, "socket%u", (u8)i);
+ attr_grp->name = plat_dev.sock[i].name;
+
+ /* Null terminated list of attributes */
+ hsmp_bin_attrs = devm_kzalloc(plat_dev.dev, sizeof(struct bin_attribute *) *
+ (NUM_HSMP_ATTRS + 1), GFP_KERNEL);
+ if (!hsmp_bin_attrs)
+ return -ENOMEM;
+
+ attr_grp->bin_attrs = hsmp_bin_attrs;
+ attr_grp->is_bin_visible = hsmp_is_sock_attr_visible;
+ hsmp_attr_grps[i] = attr_grp;
+
+ /* Now create the leaf nodes */
+ ret = hsmp_init_metric_tbl_bin_attr(hsmp_bin_attrs, i);
+ if (ret)
+ return ret;
+ }
+ return devm_device_add_groups(plat_dev.dev, hsmp_attr_grps);
+}
+
+static int hsmp_cache_proto_ver(void)
+{
+ struct hsmp_message msg = { 0 };
+ int ret;
+
+ msg.msg_id = HSMP_GET_PROTO_VER;
+ msg.sock_ind = 0;
+ msg.response_sz = hsmp_msg_desc_table[HSMP_GET_PROTO_VER].response_sz;
+
+ ret = hsmp_send_message(&msg);
+ if (!ret)
+ plat_dev.proto_ver = msg.args[0];
+
+ return ret;
+}
+
static int hsmp_pltdrv_probe(struct platform_device *pdev)
{
- int i;
+ int ret, i;
plat_dev.sock = devm_kzalloc(&pdev->dev,
(plat_dev.num_sockets * sizeof(struct hsmp_socket)),
plat_dev.hsmp_device.nodename = HSMP_DEVNODE_NAME;
plat_dev.hsmp_device.mode = 0644;
+ ret = hsmp_cache_proto_ver();
+ if (ret) {
+ dev_err(plat_dev.dev, "Failed to read HSMP protocol version\n");
+ return ret;
+ }
+
+ ret = hsmp_create_sysfs_interface();
+ if (ret)
+ dev_err(plat_dev.dev, "Failed to create HSMP sysfs interface\n");
+
return misc_register(&plat_dev.hsmp_device);
}
projects / linux.git / commitdiff