| // SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause |
| /* |
| * Copyright(c) 2015-2017 Intel Corporation. |
| */ |
| |
| #include <linux/ctype.h> |
| #include <rdma/ib_sysfs.h> |
| |
| #include "hfi.h" |
| #include "mad.h" |
| #include "trace.h" |
| |
| static struct hfi1_pportdata *hfi1_get_pportdata_kobj(struct kobject *kobj) |
| { |
| u32 port_num; |
| struct ib_device *ibdev = ib_port_sysfs_get_ibdev_kobj(kobj, &port_num); |
| struct hfi1_devdata *dd = dd_from_ibdev(ibdev); |
| |
| return &dd->pport[port_num - 1]; |
| } |
| |
| /* |
| * Start of per-port congestion control structures and support code |
| */ |
| |
| /* |
| * Congestion control table size followed by table entries |
| */ |
| static ssize_t cc_table_bin_read(struct file *filp, struct kobject *kobj, |
| struct bin_attribute *bin_attr, char *buf, |
| loff_t pos, size_t count) |
| { |
| int ret; |
| struct hfi1_pportdata *ppd = hfi1_get_pportdata_kobj(kobj); |
| struct cc_state *cc_state; |
| |
| ret = ppd->total_cct_entry * sizeof(struct ib_cc_table_entry_shadow) |
| + sizeof(__be16); |
| |
| if (pos > ret) |
| return -EINVAL; |
| |
| if (count > ret - pos) |
| count = ret - pos; |
| |
| if (!count) |
| return count; |
| |
| rcu_read_lock(); |
| cc_state = get_cc_state(ppd); |
| if (!cc_state) { |
| rcu_read_unlock(); |
| return -EINVAL; |
| } |
| memcpy(buf, (void *)&cc_state->cct + pos, count); |
| rcu_read_unlock(); |
| |
| return count; |
| } |
| static BIN_ATTR_RO(cc_table_bin, PAGE_SIZE); |
| |
| /* |
| * Congestion settings: port control, control map and an array of 16 |
| * entries for the congestion entries - increase, timer, event log |
| * trigger threshold and the minimum injection rate delay. |
| */ |
| static ssize_t cc_setting_bin_read(struct file *filp, struct kobject *kobj, |
| struct bin_attribute *bin_attr, |
| char *buf, loff_t pos, size_t count) |
| { |
| struct hfi1_pportdata *ppd = hfi1_get_pportdata_kobj(kobj); |
| int ret; |
| struct cc_state *cc_state; |
| |
| ret = sizeof(struct opa_congestion_setting_attr_shadow); |
| |
| if (pos > ret) |
| return -EINVAL; |
| if (count > ret - pos) |
| count = ret - pos; |
| |
| if (!count) |
| return count; |
| |
| rcu_read_lock(); |
| cc_state = get_cc_state(ppd); |
| if (!cc_state) { |
| rcu_read_unlock(); |
| return -EINVAL; |
| } |
| memcpy(buf, (void *)&cc_state->cong_setting + pos, count); |
| rcu_read_unlock(); |
| |
| return count; |
| } |
| static BIN_ATTR_RO(cc_setting_bin, PAGE_SIZE); |
| |
| static struct bin_attribute *port_cc_bin_attributes[] = { |
| &bin_attr_cc_setting_bin, |
| &bin_attr_cc_table_bin, |
| NULL |
| }; |
| |
| static ssize_t cc_prescan_show(struct ib_device *ibdev, u32 port_num, |
| struct ib_port_attribute *attr, char *buf) |
| { |
| struct hfi1_devdata *dd = dd_from_ibdev(ibdev); |
| struct hfi1_pportdata *ppd = &dd->pport[port_num - 1]; |
| |
| return sysfs_emit(buf, "%s\n", ppd->cc_prescan ? "on" : "off"); |
| } |
| |
| static ssize_t cc_prescan_store(struct ib_device *ibdev, u32 port_num, |
| struct ib_port_attribute *attr, const char *buf, |
| size_t count) |
| { |
| struct hfi1_devdata *dd = dd_from_ibdev(ibdev); |
| struct hfi1_pportdata *ppd = &dd->pport[port_num - 1]; |
| |
| if (!memcmp(buf, "on", 2)) |
| ppd->cc_prescan = true; |
| else if (!memcmp(buf, "off", 3)) |
| ppd->cc_prescan = false; |
| |
| return count; |
| } |
| static IB_PORT_ATTR_ADMIN_RW(cc_prescan); |
| |
| static struct attribute *port_cc_attributes[] = { |
| &ib_port_attr_cc_prescan.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group port_cc_group = { |
| .name = "CCMgtA", |
| .attrs = port_cc_attributes, |
| .bin_attrs = port_cc_bin_attributes, |
| }; |
| |
| /* Start sc2vl */ |
| struct hfi1_sc2vl_attr { |
| struct ib_port_attribute attr; |
| int sc; |
| }; |
| |
| static ssize_t sc2vl_attr_show(struct ib_device *ibdev, u32 port_num, |
| struct ib_port_attribute *attr, char *buf) |
| { |
| struct hfi1_sc2vl_attr *sattr = |
| container_of(attr, struct hfi1_sc2vl_attr, attr); |
| struct hfi1_devdata *dd = dd_from_ibdev(ibdev); |
| |
| return sysfs_emit(buf, "%u\n", *((u8 *)dd->sc2vl + sattr->sc)); |
| } |
| |
| #define HFI1_SC2VL_ATTR(N) \ |
| static struct hfi1_sc2vl_attr hfi1_sc2vl_attr_##N = { \ |
| .attr = __ATTR(N, 0444, sc2vl_attr_show, NULL), \ |
| .sc = N, \ |
| } |
| |
| HFI1_SC2VL_ATTR(0); |
| HFI1_SC2VL_ATTR(1); |
| HFI1_SC2VL_ATTR(2); |
| HFI1_SC2VL_ATTR(3); |
| HFI1_SC2VL_ATTR(4); |
| HFI1_SC2VL_ATTR(5); |
| HFI1_SC2VL_ATTR(6); |
| HFI1_SC2VL_ATTR(7); |
| HFI1_SC2VL_ATTR(8); |
| HFI1_SC2VL_ATTR(9); |
| HFI1_SC2VL_ATTR(10); |
| HFI1_SC2VL_ATTR(11); |
| HFI1_SC2VL_ATTR(12); |
| HFI1_SC2VL_ATTR(13); |
| HFI1_SC2VL_ATTR(14); |
| HFI1_SC2VL_ATTR(15); |
| HFI1_SC2VL_ATTR(16); |
| HFI1_SC2VL_ATTR(17); |
| HFI1_SC2VL_ATTR(18); |
| HFI1_SC2VL_ATTR(19); |
| HFI1_SC2VL_ATTR(20); |
| HFI1_SC2VL_ATTR(21); |
| HFI1_SC2VL_ATTR(22); |
| HFI1_SC2VL_ATTR(23); |
| HFI1_SC2VL_ATTR(24); |
| HFI1_SC2VL_ATTR(25); |
| HFI1_SC2VL_ATTR(26); |
| HFI1_SC2VL_ATTR(27); |
| HFI1_SC2VL_ATTR(28); |
| HFI1_SC2VL_ATTR(29); |
| HFI1_SC2VL_ATTR(30); |
| HFI1_SC2VL_ATTR(31); |
| |
| static struct attribute *port_sc2vl_attributes[] = { |
| &hfi1_sc2vl_attr_0.attr.attr, |
| &hfi1_sc2vl_attr_1.attr.attr, |
| &hfi1_sc2vl_attr_2.attr.attr, |
| &hfi1_sc2vl_attr_3.attr.attr, |
| &hfi1_sc2vl_attr_4.attr.attr, |
| &hfi1_sc2vl_attr_5.attr.attr, |
| &hfi1_sc2vl_attr_6.attr.attr, |
| &hfi1_sc2vl_attr_7.attr.attr, |
| &hfi1_sc2vl_attr_8.attr.attr, |
| &hfi1_sc2vl_attr_9.attr.attr, |
| &hfi1_sc2vl_attr_10.attr.attr, |
| &hfi1_sc2vl_attr_11.attr.attr, |
| &hfi1_sc2vl_attr_12.attr.attr, |
| &hfi1_sc2vl_attr_13.attr.attr, |
| &hfi1_sc2vl_attr_14.attr.attr, |
| &hfi1_sc2vl_attr_15.attr.attr, |
| &hfi1_sc2vl_attr_16.attr.attr, |
| &hfi1_sc2vl_attr_17.attr.attr, |
| &hfi1_sc2vl_attr_18.attr.attr, |
| &hfi1_sc2vl_attr_19.attr.attr, |
| &hfi1_sc2vl_attr_20.attr.attr, |
| &hfi1_sc2vl_attr_21.attr.attr, |
| &hfi1_sc2vl_attr_22.attr.attr, |
| &hfi1_sc2vl_attr_23.attr.attr, |
| &hfi1_sc2vl_attr_24.attr.attr, |
| &hfi1_sc2vl_attr_25.attr.attr, |
| &hfi1_sc2vl_attr_26.attr.attr, |
| &hfi1_sc2vl_attr_27.attr.attr, |
| &hfi1_sc2vl_attr_28.attr.attr, |
| &hfi1_sc2vl_attr_29.attr.attr, |
| &hfi1_sc2vl_attr_30.attr.attr, |
| &hfi1_sc2vl_attr_31.attr.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group port_sc2vl_group = { |
| .name = "sc2vl", |
| .attrs = port_sc2vl_attributes, |
| }; |
| /* End sc2vl */ |
| |
| /* Start sl2sc */ |
| struct hfi1_sl2sc_attr { |
| struct ib_port_attribute attr; |
| int sl; |
| }; |
| |
| static ssize_t sl2sc_attr_show(struct ib_device *ibdev, u32 port_num, |
| struct ib_port_attribute *attr, char *buf) |
| { |
| struct hfi1_sl2sc_attr *sattr = |
| container_of(attr, struct hfi1_sl2sc_attr, attr); |
| struct hfi1_devdata *dd = dd_from_ibdev(ibdev); |
| struct hfi1_ibport *ibp = &dd->pport[port_num - 1].ibport_data; |
| |
| return sysfs_emit(buf, "%u\n", ibp->sl_to_sc[sattr->sl]); |
| } |
| |
| #define HFI1_SL2SC_ATTR(N) \ |
| static struct hfi1_sl2sc_attr hfi1_sl2sc_attr_##N = { \ |
| .attr = __ATTR(N, 0444, sl2sc_attr_show, NULL), .sl = N \ |
| } |
| |
| HFI1_SL2SC_ATTR(0); |
| HFI1_SL2SC_ATTR(1); |
| HFI1_SL2SC_ATTR(2); |
| HFI1_SL2SC_ATTR(3); |
| HFI1_SL2SC_ATTR(4); |
| HFI1_SL2SC_ATTR(5); |
| HFI1_SL2SC_ATTR(6); |
| HFI1_SL2SC_ATTR(7); |
| HFI1_SL2SC_ATTR(8); |
| HFI1_SL2SC_ATTR(9); |
| HFI1_SL2SC_ATTR(10); |
| HFI1_SL2SC_ATTR(11); |
| HFI1_SL2SC_ATTR(12); |
| HFI1_SL2SC_ATTR(13); |
| HFI1_SL2SC_ATTR(14); |
| HFI1_SL2SC_ATTR(15); |
| HFI1_SL2SC_ATTR(16); |
| HFI1_SL2SC_ATTR(17); |
| HFI1_SL2SC_ATTR(18); |
| HFI1_SL2SC_ATTR(19); |
| HFI1_SL2SC_ATTR(20); |
| HFI1_SL2SC_ATTR(21); |
| HFI1_SL2SC_ATTR(22); |
| HFI1_SL2SC_ATTR(23); |
| HFI1_SL2SC_ATTR(24); |
| HFI1_SL2SC_ATTR(25); |
| HFI1_SL2SC_ATTR(26); |
| HFI1_SL2SC_ATTR(27); |
| HFI1_SL2SC_ATTR(28); |
| HFI1_SL2SC_ATTR(29); |
| HFI1_SL2SC_ATTR(30); |
| HFI1_SL2SC_ATTR(31); |
| |
| static struct attribute *port_sl2sc_attributes[] = { |
| &hfi1_sl2sc_attr_0.attr.attr, |
| &hfi1_sl2sc_attr_1.attr.attr, |
| &hfi1_sl2sc_attr_2.attr.attr, |
| &hfi1_sl2sc_attr_3.attr.attr, |
| &hfi1_sl2sc_attr_4.attr.attr, |
| &hfi1_sl2sc_attr_5.attr.attr, |
| &hfi1_sl2sc_attr_6.attr.attr, |
| &hfi1_sl2sc_attr_7.attr.attr, |
| &hfi1_sl2sc_attr_8.attr.attr, |
| &hfi1_sl2sc_attr_9.attr.attr, |
| &hfi1_sl2sc_attr_10.attr.attr, |
| &hfi1_sl2sc_attr_11.attr.attr, |
| &hfi1_sl2sc_attr_12.attr.attr, |
| &hfi1_sl2sc_attr_13.attr.attr, |
| &hfi1_sl2sc_attr_14.attr.attr, |
| &hfi1_sl2sc_attr_15.attr.attr, |
| &hfi1_sl2sc_attr_16.attr.attr, |
| &hfi1_sl2sc_attr_17.attr.attr, |
| &hfi1_sl2sc_attr_18.attr.attr, |
| &hfi1_sl2sc_attr_19.attr.attr, |
| &hfi1_sl2sc_attr_20.attr.attr, |
| &hfi1_sl2sc_attr_21.attr.attr, |
| &hfi1_sl2sc_attr_22.attr.attr, |
| &hfi1_sl2sc_attr_23.attr.attr, |
| &hfi1_sl2sc_attr_24.attr.attr, |
| &hfi1_sl2sc_attr_25.attr.attr, |
| &hfi1_sl2sc_attr_26.attr.attr, |
| &hfi1_sl2sc_attr_27.attr.attr, |
| &hfi1_sl2sc_attr_28.attr.attr, |
| &hfi1_sl2sc_attr_29.attr.attr, |
| &hfi1_sl2sc_attr_30.attr.attr, |
| &hfi1_sl2sc_attr_31.attr.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group port_sl2sc_group = { |
| .name = "sl2sc", |
| .attrs = port_sl2sc_attributes, |
| }; |
| |
| /* End sl2sc */ |
| |
| /* Start vl2mtu */ |
| |
| struct hfi1_vl2mtu_attr { |
| struct ib_port_attribute attr; |
| int vl; |
| }; |
| |
| static ssize_t vl2mtu_attr_show(struct ib_device *ibdev, u32 port_num, |
| struct ib_port_attribute *attr, char *buf) |
| { |
| struct hfi1_vl2mtu_attr *vlattr = |
| container_of(attr, struct hfi1_vl2mtu_attr, attr); |
| struct hfi1_devdata *dd = dd_from_ibdev(ibdev); |
| |
| return sysfs_emit(buf, "%u\n", dd->vld[vlattr->vl].mtu); |
| } |
| |
| #define HFI1_VL2MTU_ATTR(N) \ |
| static struct hfi1_vl2mtu_attr hfi1_vl2mtu_attr_##N = { \ |
| .attr = __ATTR(N, 0444, vl2mtu_attr_show, NULL), \ |
| .vl = N, \ |
| } |
| |
| HFI1_VL2MTU_ATTR(0); |
| HFI1_VL2MTU_ATTR(1); |
| HFI1_VL2MTU_ATTR(2); |
| HFI1_VL2MTU_ATTR(3); |
| HFI1_VL2MTU_ATTR(4); |
| HFI1_VL2MTU_ATTR(5); |
| HFI1_VL2MTU_ATTR(6); |
| HFI1_VL2MTU_ATTR(7); |
| HFI1_VL2MTU_ATTR(8); |
| HFI1_VL2MTU_ATTR(9); |
| HFI1_VL2MTU_ATTR(10); |
| HFI1_VL2MTU_ATTR(11); |
| HFI1_VL2MTU_ATTR(12); |
| HFI1_VL2MTU_ATTR(13); |
| HFI1_VL2MTU_ATTR(14); |
| HFI1_VL2MTU_ATTR(15); |
| |
| static struct attribute *port_vl2mtu_attributes[] = { |
| &hfi1_vl2mtu_attr_0.attr.attr, |
| &hfi1_vl2mtu_attr_1.attr.attr, |
| &hfi1_vl2mtu_attr_2.attr.attr, |
| &hfi1_vl2mtu_attr_3.attr.attr, |
| &hfi1_vl2mtu_attr_4.attr.attr, |
| &hfi1_vl2mtu_attr_5.attr.attr, |
| &hfi1_vl2mtu_attr_6.attr.attr, |
| &hfi1_vl2mtu_attr_7.attr.attr, |
| &hfi1_vl2mtu_attr_8.attr.attr, |
| &hfi1_vl2mtu_attr_9.attr.attr, |
| &hfi1_vl2mtu_attr_10.attr.attr, |
| &hfi1_vl2mtu_attr_11.attr.attr, |
| &hfi1_vl2mtu_attr_12.attr.attr, |
| &hfi1_vl2mtu_attr_13.attr.attr, |
| &hfi1_vl2mtu_attr_14.attr.attr, |
| &hfi1_vl2mtu_attr_15.attr.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group port_vl2mtu_group = { |
| .name = "vl2mtu", |
| .attrs = port_vl2mtu_attributes, |
| }; |
| |
| /* end of per-port file structures and support code */ |
| |
| /* |
| * Start of per-unit (or driver, in some cases, but replicated |
| * per unit) functions (these get a device *) |
| */ |
| static ssize_t hw_rev_show(struct device *device, struct device_attribute *attr, |
| char *buf) |
| { |
| struct hfi1_ibdev *dev = |
| rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev); |
| |
| return sysfs_emit(buf, "%x\n", dd_from_dev(dev)->minrev); |
| } |
| static DEVICE_ATTR_RO(hw_rev); |
| |
| static ssize_t board_id_show(struct device *device, |
| struct device_attribute *attr, char *buf) |
| { |
| struct hfi1_ibdev *dev = |
| rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev); |
| struct hfi1_devdata *dd = dd_from_dev(dev); |
| |
| if (!dd->boardname) |
| return -EINVAL; |
| |
| return sysfs_emit(buf, "%s\n", dd->boardname); |
| } |
| static DEVICE_ATTR_RO(board_id); |
| |
| static ssize_t boardversion_show(struct device *device, |
| struct device_attribute *attr, char *buf) |
| { |
| struct hfi1_ibdev *dev = |
| rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev); |
| struct hfi1_devdata *dd = dd_from_dev(dev); |
| |
| /* The string printed here is already newline-terminated. */ |
| return sysfs_emit(buf, "%s", dd->boardversion); |
| } |
| static DEVICE_ATTR_RO(boardversion); |
| |
| static ssize_t nctxts_show(struct device *device, |
| struct device_attribute *attr, char *buf) |
| { |
| struct hfi1_ibdev *dev = |
| rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev); |
| struct hfi1_devdata *dd = dd_from_dev(dev); |
| |
| /* |
| * Return the smaller of send and receive contexts. |
| * Normally, user level applications would require both a send |
| * and a receive context, so returning the smaller of the two counts |
| * give a more accurate picture of total contexts available. |
| */ |
| return sysfs_emit(buf, "%u\n", |
| min(dd->num_user_contexts, |
| (u32)dd->sc_sizes[SC_USER].count)); |
| } |
| static DEVICE_ATTR_RO(nctxts); |
| |
| static ssize_t nfreectxts_show(struct device *device, |
| struct device_attribute *attr, char *buf) |
| { |
| struct hfi1_ibdev *dev = |
| rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev); |
| struct hfi1_devdata *dd = dd_from_dev(dev); |
| |
| /* Return the number of free user ports (contexts) available. */ |
| return sysfs_emit(buf, "%u\n", dd->freectxts); |
| } |
| static DEVICE_ATTR_RO(nfreectxts); |
| |
| static ssize_t serial_show(struct device *device, |
| struct device_attribute *attr, char *buf) |
| { |
| struct hfi1_ibdev *dev = |
| rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev); |
| struct hfi1_devdata *dd = dd_from_dev(dev); |
| |
| /* dd->serial is already newline terminated in chip.c */ |
| return sysfs_emit(buf, "%s", dd->serial); |
| } |
| static DEVICE_ATTR_RO(serial); |
| |
| static ssize_t chip_reset_store(struct device *device, |
| struct device_attribute *attr, const char *buf, |
| size_t count) |
| { |
| struct hfi1_ibdev *dev = |
| rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev); |
| struct hfi1_devdata *dd = dd_from_dev(dev); |
| int ret; |
| |
| if (count < 5 || memcmp(buf, "reset", 5) || !dd->diag_client) { |
| ret = -EINVAL; |
| goto bail; |
| } |
| |
| ret = hfi1_reset_device(dd->unit); |
| bail: |
| return ret < 0 ? ret : count; |
| } |
| static DEVICE_ATTR_WO(chip_reset); |
| |
| /* |
| * Convert the reported temperature from an integer (reported in |
| * units of 0.25C) to a floating point number. |
| */ |
| #define temp_d(t) ((t) >> 2) |
| #define temp_f(t) (((t)&0x3) * 25u) |
| |
| /* |
| * Dump tempsense values, in decimal, to ease shell-scripts. |
| */ |
| static ssize_t tempsense_show(struct device *device, |
| struct device_attribute *attr, char *buf) |
| { |
| struct hfi1_ibdev *dev = |
| rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev); |
| struct hfi1_devdata *dd = dd_from_dev(dev); |
| struct hfi1_temp temp; |
| int ret; |
| |
| ret = hfi1_tempsense_rd(dd, &temp); |
| if (ret) |
| return ret; |
| |
| return sysfs_emit(buf, "%u.%02u %u.%02u %u.%02u %u.%02u %u %u %u\n", |
| temp_d(temp.curr), temp_f(temp.curr), |
| temp_d(temp.lo_lim), temp_f(temp.lo_lim), |
| temp_d(temp.hi_lim), temp_f(temp.hi_lim), |
| temp_d(temp.crit_lim), temp_f(temp.crit_lim), |
| temp.triggers & 0x1, |
| temp.triggers & 0x2, |
| temp.triggers & 0x4); |
| } |
| static DEVICE_ATTR_RO(tempsense); |
| |
| /* |
| * end of per-unit (or driver, in some cases, but replicated |
| * per unit) functions |
| */ |
| |
| /* start of per-unit file structures and support code */ |
| static struct attribute *hfi1_attributes[] = { |
| &dev_attr_hw_rev.attr, |
| &dev_attr_board_id.attr, |
| &dev_attr_nctxts.attr, |
| &dev_attr_nfreectxts.attr, |
| &dev_attr_serial.attr, |
| &dev_attr_boardversion.attr, |
| &dev_attr_tempsense.attr, |
| &dev_attr_chip_reset.attr, |
| NULL, |
| }; |
| |
| const struct attribute_group ib_hfi1_attr_group = { |
| .attrs = hfi1_attributes, |
| }; |
| |
| const struct attribute_group *hfi1_attr_port_groups[] = { |
| &port_cc_group, |
| &port_sc2vl_group, |
| &port_sl2sc_group, |
| &port_vl2mtu_group, |
| NULL, |
| }; |
| |
| struct sde_attribute { |
| struct attribute attr; |
| ssize_t (*show)(struct sdma_engine *sde, char *buf); |
| ssize_t (*store)(struct sdma_engine *sde, const char *buf, size_t cnt); |
| }; |
| |
| static ssize_t sde_show(struct kobject *kobj, struct attribute *attr, char *buf) |
| { |
| struct sde_attribute *sde_attr = |
| container_of(attr, struct sde_attribute, attr); |
| struct sdma_engine *sde = |
| container_of(kobj, struct sdma_engine, kobj); |
| |
| if (!sde_attr->show) |
| return -EINVAL; |
| |
| return sde_attr->show(sde, buf); |
| } |
| |
| static ssize_t sde_store(struct kobject *kobj, struct attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct sde_attribute *sde_attr = |
| container_of(attr, struct sde_attribute, attr); |
| struct sdma_engine *sde = |
| container_of(kobj, struct sdma_engine, kobj); |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EPERM; |
| |
| if (!sde_attr->store) |
| return -EINVAL; |
| |
| return sde_attr->store(sde, buf, count); |
| } |
| |
| static const struct sysfs_ops sde_sysfs_ops = { |
| .show = sde_show, |
| .store = sde_store, |
| }; |
| |
| static struct kobj_type sde_ktype = { |
| .sysfs_ops = &sde_sysfs_ops, |
| }; |
| |
| #define SDE_ATTR(_name, _mode, _show, _store) \ |
| struct sde_attribute sde_attr_##_name = \ |
| __ATTR(_name, _mode, _show, _store) |
| |
| static ssize_t sde_show_cpu_to_sde_map(struct sdma_engine *sde, char *buf) |
| { |
| return sdma_get_cpu_to_sde_map(sde, buf); |
| } |
| |
| static ssize_t sde_store_cpu_to_sde_map(struct sdma_engine *sde, |
| const char *buf, size_t count) |
| { |
| return sdma_set_cpu_to_sde_map(sde, buf, count); |
| } |
| |
| static ssize_t sde_show_vl(struct sdma_engine *sde, char *buf) |
| { |
| int vl; |
| |
| vl = sdma_engine_get_vl(sde); |
| if (vl < 0) |
| return vl; |
| |
| return sysfs_emit(buf, "%d\n", vl); |
| } |
| |
| static SDE_ATTR(cpu_list, S_IWUSR | S_IRUGO, |
| sde_show_cpu_to_sde_map, |
| sde_store_cpu_to_sde_map); |
| static SDE_ATTR(vl, S_IRUGO, sde_show_vl, NULL); |
| |
| static struct sde_attribute *sde_attribs[] = { |
| &sde_attr_cpu_list, |
| &sde_attr_vl |
| }; |
| |
| /* |
| * Register and create our files in /sys/class/infiniband. |
| */ |
| int hfi1_verbs_register_sysfs(struct hfi1_devdata *dd) |
| { |
| struct ib_device *dev = &dd->verbs_dev.rdi.ibdev; |
| struct device *class_dev = &dev->dev; |
| int i, j, ret; |
| |
| for (i = 0; i < dd->num_sdma; i++) { |
| ret = kobject_init_and_add(&dd->per_sdma[i].kobj, |
| &sde_ktype, &class_dev->kobj, |
| "sdma%d", i); |
| if (ret) |
| goto bail; |
| |
| for (j = 0; j < ARRAY_SIZE(sde_attribs); j++) { |
| ret = sysfs_create_file(&dd->per_sdma[i].kobj, |
| &sde_attribs[j]->attr); |
| if (ret) |
| goto bail; |
| } |
| } |
| |
| return 0; |
| bail: |
| /* |
| * The function kobject_put() will call kobject_del() if the kobject |
| * has been added successfully. The sysfs files created under the |
| * kobject directory will also be removed during the process. |
| */ |
| for (; i >= 0; i--) |
| kobject_put(&dd->per_sdma[i].kobj); |
| |
| return ret; |
| } |
| |
| /* |
| * Unregister and remove our files in /sys/class/infiniband. |
| */ |
| void hfi1_verbs_unregister_sysfs(struct hfi1_devdata *dd) |
| { |
| int i; |
| |
| /* Unwind operations in hfi1_verbs_register_sysfs() */ |
| for (i = 0; i < dd->num_sdma; i++) |
| kobject_put(&dd->per_sdma[i].kobj); |
| } |