^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright 2014 IBM Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/pci_regs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "cxl.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define to_afu_chardev_m(d) dev_get_drvdata(d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /********* Adapter attributes **********************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static ssize_t caia_version_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) return scnprintf(buf, PAGE_SIZE, "%i.%i\n", adapter->caia_major,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) adapter->caia_minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static ssize_t psl_revision_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->psl_rev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static ssize_t base_image_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->base_image);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static ssize_t image_loaded_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (adapter->user_image_loaded)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return scnprintf(buf, PAGE_SIZE, "user\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return scnprintf(buf, PAGE_SIZE, "factory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static ssize_t psl_timebase_synced_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) u64 psl_tb, delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) /* Recompute the status only in native mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (cpu_has_feature(CPU_FTR_HVMODE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) psl_tb = adapter->native->sl_ops->timebase_read(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) delta = abs(mftb() - psl_tb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /* CORE TB and PSL TB difference <= 16usecs ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) adapter->psl_timebase_synced = (tb_to_ns(delta) < 16000) ? true : false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) pr_devel("PSL timebase %s - delta: 0x%016llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) (tb_to_ns(delta) < 16000) ? "synchronized" :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) "not synchronized", tb_to_ns(delta));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->psl_timebase_synced);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static ssize_t tunneled_ops_supported_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->tunneled_ops_supported);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static ssize_t reset_adapter_store(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) rc = sscanf(buf, "%i", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if ((rc != 1) || (val != 1 && val != -1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * See if we can lock the context mapping that's only allowed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * when there are no contexts attached to the adapter. Once
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * taken this will also prevent any context from getting activated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (val == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) rc = cxl_adapter_context_lock(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) rc = cxl_ops->adapter_reset(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* In case reset failed release context lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) cxl_adapter_context_unlock(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) } else if (val == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* Perform a forced adapter reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) rc = cxl_ops->adapter_reset(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return rc ? rc : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static ssize_t load_image_on_perst_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (!adapter->perst_loads_image)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return scnprintf(buf, PAGE_SIZE, "none\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (adapter->perst_select_user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return scnprintf(buf, PAGE_SIZE, "user\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) return scnprintf(buf, PAGE_SIZE, "factory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static ssize_t load_image_on_perst_store(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (!strncmp(buf, "none", 4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) adapter->perst_loads_image = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) else if (!strncmp(buf, "user", 4)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) adapter->perst_select_user = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) adapter->perst_loads_image = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) } else if (!strncmp(buf, "factory", 7)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) adapter->perst_select_user = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) adapter->perst_loads_image = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if ((rc = cxl_update_image_control(adapter)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static ssize_t perst_reloads_same_image_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->perst_same_image);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static ssize_t perst_reloads_same_image_store(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct cxl *adapter = to_cxl_adapter(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) rc = sscanf(buf, "%i", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) if ((rc != 1) || !(val == 1 || val == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) adapter->perst_same_image = (val == 1 ? true : false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static struct device_attribute adapter_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) __ATTR_RO(caia_version),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) __ATTR_RO(psl_revision),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) __ATTR_RO(base_image),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) __ATTR_RO(image_loaded),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) __ATTR_RO(psl_timebase_synced),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) __ATTR_RO(tunneled_ops_supported),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) __ATTR_RW(load_image_on_perst),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) __ATTR_RW(perst_reloads_same_image),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) __ATTR(reset, S_IWUSR, NULL, reset_adapter_store),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /********* AFU master specific attributes **********************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static ssize_t mmio_size_show_master(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct cxl_afu *afu = to_afu_chardev_m(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->adapter->ps_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) static ssize_t pp_mmio_off_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) struct cxl_afu *afu = to_afu_chardev_m(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->native->pp_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) static ssize_t pp_mmio_len_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct cxl_afu *afu = to_afu_chardev_m(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->pp_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static struct device_attribute afu_master_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) __ATTR(mmio_size, S_IRUGO, mmio_size_show_master, NULL),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) __ATTR_RO(pp_mmio_off),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) __ATTR_RO(pp_mmio_len),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /********* AFU attributes **************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static ssize_t mmio_size_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct cxl_afu *afu = to_cxl_afu(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (afu->pp_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->pp_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->adapter->ps_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static ssize_t reset_store_afu(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) struct cxl_afu *afu = to_cxl_afu(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) /* Not safe to reset if it is currently in use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) mutex_lock(&afu->contexts_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (!idr_is_empty(&afu->contexts_idr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) rc = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if ((rc = cxl_ops->afu_reset(afu)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) rc = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) mutex_unlock(&afu->contexts_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) static ssize_t irqs_min_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) struct cxl_afu *afu = to_cxl_afu(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) return scnprintf(buf, PAGE_SIZE, "%i\n", afu->pp_irqs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) static ssize_t irqs_max_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) struct cxl_afu *afu = to_cxl_afu(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) return scnprintf(buf, PAGE_SIZE, "%i\n", afu->irqs_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) static ssize_t irqs_max_store(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct cxl_afu *afu = to_cxl_afu(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int irqs_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) ret = sscanf(buf, "%i", &irqs_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (ret != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (irqs_max < afu->pp_irqs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (cpu_has_feature(CPU_FTR_HVMODE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (irqs_max > afu->adapter->user_irqs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) /* pHyp sets a per-AFU limit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (irqs_max > afu->guest->max_ints)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) afu->irqs_max = irqs_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) static ssize_t modes_supported_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) struct cxl_afu *afu = to_cxl_afu(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) char *p = buf, *end = buf + PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (afu->modes_supported & CXL_MODE_DEDICATED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) p += scnprintf(p, end - p, "dedicated_process\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (afu->modes_supported & CXL_MODE_DIRECTED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) p += scnprintf(p, end - p, "afu_directed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return (p - buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) static ssize_t prefault_mode_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) struct cxl_afu *afu = to_cxl_afu(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) switch (afu->prefault_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) case CXL_PREFAULT_WED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return scnprintf(buf, PAGE_SIZE, "work_element_descriptor\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) case CXL_PREFAULT_ALL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return scnprintf(buf, PAGE_SIZE, "all\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) return scnprintf(buf, PAGE_SIZE, "none\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static ssize_t prefault_mode_store(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) struct cxl_afu *afu = to_cxl_afu(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) enum prefault_modes mode = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (!strncmp(buf, "none", 4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) mode = CXL_PREFAULT_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (!radix_enabled()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) /* only allowed when not in radix mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if (!strncmp(buf, "work_element_descriptor", 23))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) mode = CXL_PREFAULT_WED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (!strncmp(buf, "all", 3))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) mode = CXL_PREFAULT_ALL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) dev_err(device, "Cannot prefault with radix enabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (mode == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) afu->prefault_mode = mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) static ssize_t mode_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) struct cxl_afu *afu = to_cxl_afu(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) if (afu->current_mode == CXL_MODE_DEDICATED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) return scnprintf(buf, PAGE_SIZE, "dedicated_process\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (afu->current_mode == CXL_MODE_DIRECTED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return scnprintf(buf, PAGE_SIZE, "afu_directed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) return scnprintf(buf, PAGE_SIZE, "none\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) static ssize_t mode_store(struct device *device, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) struct cxl_afu *afu = to_cxl_afu(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) int old_mode, mode = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) int rc = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /* can't change this if we have a user */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) mutex_lock(&afu->contexts_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (!idr_is_empty(&afu->contexts_idr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (!strncmp(buf, "dedicated_process", 17))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) mode = CXL_MODE_DEDICATED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (!strncmp(buf, "afu_directed", 12))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) mode = CXL_MODE_DIRECTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (!strncmp(buf, "none", 4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) mode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) if (mode == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) * afu_deactivate_mode needs to be done outside the lock, prevent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) * other contexts coming in before we are ready:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) old_mode = afu->current_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) afu->current_mode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) afu->num_procs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) mutex_unlock(&afu->contexts_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if ((rc = cxl_ops->afu_deactivate_mode(afu, old_mode)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if ((rc = cxl_ops->afu_activate_mode(afu, mode)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) mutex_unlock(&afu->contexts_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) static ssize_t api_version_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) return scnprintf(buf, PAGE_SIZE, "%i\n", CXL_API_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) static ssize_t api_version_compatible_show(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) return scnprintf(buf, PAGE_SIZE, "%i\n", CXL_API_VERSION_COMPATIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) static ssize_t afu_eb_read(struct file *filp, struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) struct bin_attribute *bin_attr, char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) loff_t off, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) struct cxl_afu *afu = to_cxl_afu(kobj_to_dev(kobj));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) return cxl_ops->afu_read_err_buffer(afu, buf, off, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) static struct device_attribute afu_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) __ATTR_RO(mmio_size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) __ATTR_RO(irqs_min),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) __ATTR_RW(irqs_max),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) __ATTR_RO(modes_supported),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) __ATTR_RW(mode),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) __ATTR_RW(prefault_mode),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) __ATTR_RO(api_version),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) __ATTR_RO(api_version_compatible),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) __ATTR(reset, S_IWUSR, NULL, reset_store_afu),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) int cxl_sysfs_adapter_add(struct cxl *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) struct device_attribute *dev_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) int i, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) for (i = 0; i < ARRAY_SIZE(adapter_attrs); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) dev_attr = &adapter_attrs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) if (cxl_ops->support_attributes(dev_attr->attr.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) CXL_ADAPTER_ATTRS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if ((rc = device_create_file(&adapter->dev, dev_attr)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) for (i--; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) dev_attr = &adapter_attrs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) if (cxl_ops->support_attributes(dev_attr->attr.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) CXL_ADAPTER_ATTRS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) device_remove_file(&adapter->dev, dev_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) void cxl_sysfs_adapter_remove(struct cxl *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) struct device_attribute *dev_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) for (i = 0; i < ARRAY_SIZE(adapter_attrs); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) dev_attr = &adapter_attrs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) if (cxl_ops->support_attributes(dev_attr->attr.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) CXL_ADAPTER_ATTRS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) device_remove_file(&adapter->dev, dev_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) struct afu_config_record {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) struct kobject kobj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) struct bin_attribute config_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) int cr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) u16 device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) u16 vendor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) u32 class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) #define to_cr(obj) container_of(obj, struct afu_config_record, kobj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) static ssize_t vendor_show(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) struct kobj_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) struct afu_config_record *cr = to_cr(kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) return scnprintf(buf, PAGE_SIZE, "0x%.4x\n", cr->vendor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) static ssize_t device_show(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) struct kobj_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) struct afu_config_record *cr = to_cr(kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) return scnprintf(buf, PAGE_SIZE, "0x%.4x\n", cr->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) static ssize_t class_show(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) struct kobj_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) struct afu_config_record *cr = to_cr(kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) return scnprintf(buf, PAGE_SIZE, "0x%.6x\n", cr->class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) static ssize_t afu_read_config(struct file *filp, struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) struct bin_attribute *bin_attr, char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) loff_t off, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) struct afu_config_record *cr = to_cr(kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) struct cxl_afu *afu = to_cxl_afu(kobj_to_dev(kobj->parent));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) u64 i, j, val, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) for (i = 0; i < count;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) rc = cxl_ops->afu_cr_read64(afu, cr->cr, off & ~0x7, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) val = ~0ULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) for (j = off & 0x7; j < 8 && i < count; i++, j++, off++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) buf[i] = (val >> (j * 8)) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) static struct kobj_attribute vendor_attribute =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) __ATTR_RO(vendor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) static struct kobj_attribute device_attribute =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) __ATTR_RO(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) static struct kobj_attribute class_attribute =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) __ATTR_RO(class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) static struct attribute *afu_cr_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) &vendor_attribute.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) &device_attribute.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) &class_attribute.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) static void release_afu_config_record(struct kobject *kobj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) struct afu_config_record *cr = to_cr(kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) kfree(cr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) static struct kobj_type afu_config_record_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) .sysfs_ops = &kobj_sysfs_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) .release = release_afu_config_record,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) .default_attrs = afu_cr_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) static struct afu_config_record *cxl_sysfs_afu_new_cr(struct cxl_afu *afu, int cr_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) struct afu_config_record *cr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) cr = kzalloc(sizeof(struct afu_config_record), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (!cr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) cr->cr = cr_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) rc = cxl_ops->afu_cr_read16(afu, cr_idx, PCI_DEVICE_ID, &cr->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) rc = cxl_ops->afu_cr_read16(afu, cr_idx, PCI_VENDOR_ID, &cr->vendor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) rc = cxl_ops->afu_cr_read32(afu, cr_idx, PCI_CLASS_REVISION, &cr->class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) cr->class >>= 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) * Export raw AFU PCIe like config record. For now this is read only by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) * root - we can expand that later to be readable by non-root and maybe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) * even writable provided we have a good use-case. Once we support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) * exposing AFUs through a virtual PHB they will get that for free from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) * Linux' PCI infrastructure, but until then it's not clear that we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * need it for anything since the main use case is just identifying
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) * AFUs, which can be done via the vendor, device and class attributes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) sysfs_bin_attr_init(&cr->config_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) cr->config_attr.attr.name = "config";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) cr->config_attr.attr.mode = S_IRUSR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) cr->config_attr.size = afu->crs_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) cr->config_attr.read = afu_read_config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) rc = kobject_init_and_add(&cr->kobj, &afu_config_record_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) &afu->dev.kobj, "cr%i", cr->cr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) rc = sysfs_create_bin_file(&cr->kobj, &cr->config_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) rc = kobject_uevent(&cr->kobj, KOBJ_ADD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) return cr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) err2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) sysfs_remove_bin_file(&cr->kobj, &cr->config_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) kobject_put(&cr->kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) return ERR_PTR(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) kfree(cr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) return ERR_PTR(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) void cxl_sysfs_afu_remove(struct cxl_afu *afu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) struct device_attribute *dev_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) struct afu_config_record *cr, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) /* remove the err buffer bin attribute */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) if (afu->eb_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) device_remove_bin_file(&afu->dev, &afu->attr_eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) for (i = 0; i < ARRAY_SIZE(afu_attrs); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) dev_attr = &afu_attrs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) if (cxl_ops->support_attributes(dev_attr->attr.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) CXL_AFU_ATTRS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) device_remove_file(&afu->dev, &afu_attrs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) list_for_each_entry_safe(cr, tmp, &afu->crs, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) sysfs_remove_bin_file(&cr->kobj, &cr->config_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) kobject_put(&cr->kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) int cxl_sysfs_afu_add(struct cxl_afu *afu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) struct device_attribute *dev_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) struct afu_config_record *cr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) int i, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) INIT_LIST_HEAD(&afu->crs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) for (i = 0; i < ARRAY_SIZE(afu_attrs); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) dev_attr = &afu_attrs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) if (cxl_ops->support_attributes(dev_attr->attr.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) CXL_AFU_ATTRS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) if ((rc = device_create_file(&afu->dev, &afu_attrs[i])))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) /* conditionally create the add the binary file for error info buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) if (afu->eb_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) sysfs_attr_init(&afu->attr_eb.attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) afu->attr_eb.attr.name = "afu_err_buff";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) afu->attr_eb.attr.mode = S_IRUGO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) afu->attr_eb.size = afu->eb_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) afu->attr_eb.read = afu_eb_read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) rc = device_create_bin_file(&afu->dev, &afu->attr_eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) dev_err(&afu->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) "Unable to create eb attr for the afu. Err(%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) for (i = 0; i < afu->crs_num; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) cr = cxl_sysfs_afu_new_cr(afu, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (IS_ERR(cr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) rc = PTR_ERR(cr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) list_add(&cr->list, &afu->crs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) cxl_sysfs_afu_remove(afu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) /* reset the eb_len as we havent created the bin attr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) afu->eb_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) for (i--; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) dev_attr = &afu_attrs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) if (cxl_ops->support_attributes(dev_attr->attr.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) CXL_AFU_ATTRS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) device_remove_file(&afu->dev, &afu_attrs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) int cxl_sysfs_afu_m_add(struct cxl_afu *afu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) struct device_attribute *dev_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) int i, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) for (i = 0; i < ARRAY_SIZE(afu_master_attrs); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) dev_attr = &afu_master_attrs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (cxl_ops->support_attributes(dev_attr->attr.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) CXL_AFU_MASTER_ATTRS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) if ((rc = device_create_file(afu->chardev_m, &afu_master_attrs[i])))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) for (i--; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) dev_attr = &afu_master_attrs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) if (cxl_ops->support_attributes(dev_attr->attr.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) CXL_AFU_MASTER_ATTRS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) device_remove_file(afu->chardev_m, &afu_master_attrs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) void cxl_sysfs_afu_m_remove(struct cxl_afu *afu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) struct device_attribute *dev_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) for (i = 0; i < ARRAY_SIZE(afu_master_attrs); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) dev_attr = &afu_master_attrs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) if (cxl_ops->support_attributes(dev_attr->attr.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) CXL_AFU_MASTER_ATTRS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) device_remove_file(afu->chardev_m, &afu_master_attrs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags