^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright IBM Corp. 2006, 2012
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Martin Schwidefsky <schwidefsky@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Ralph Wuerthner <rwuerthn@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Felix Beck <felix.beck@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Holger Dengler <hd@linux.vnet.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Adjunct processor bus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define KMSG_COMPONENT "ap"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/kernel_stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/freezer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/notifier.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <asm/airq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <asm/isc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/hrtimer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/ktime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <asm/facility.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/crypto.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include "ap_bus.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include "ap_debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * Module parameters; note though this file itself isn't modular.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) int ap_domain_index = -1; /* Adjunct Processor Domain Index */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static DEFINE_SPINLOCK(ap_domain_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) module_param_named(domain, ap_domain_index, int, 0440);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) MODULE_PARM_DESC(domain, "domain index for ap devices");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) EXPORT_SYMBOL(ap_domain_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static int ap_thread_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) module_param_named(poll_thread, ap_thread_flag, int, 0440);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) MODULE_PARM_DESC(poll_thread, "Turn on/off poll thread, default is 0 (off).");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static char *apm_str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) module_param_named(apmask, apm_str, charp, 0440);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) MODULE_PARM_DESC(apmask, "AP bus adapter mask.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static char *aqm_str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) module_param_named(aqmask, aqm_str, charp, 0440);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) MODULE_PARM_DESC(aqmask, "AP bus domain mask.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static struct device *ap_root_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) /* Hashtable of all queue devices on the AP bus */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) DEFINE_HASHTABLE(ap_queues, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /* lock used for the ap_queues hashtable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) DEFINE_SPINLOCK(ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* Default permissions (ioctl, card and domain masking) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct ap_perms ap_perms;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) EXPORT_SYMBOL(ap_perms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) DEFINE_MUTEX(ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) EXPORT_SYMBOL(ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static struct ap_config_info *ap_qci_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * AP bus related debug feature things.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) debug_info_t *ap_dbf_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * Workqueue timer for bus rescan.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static struct timer_list ap_config_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) static int ap_config_time = AP_CONFIG_TIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static void ap_scan_bus(struct work_struct *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static DECLARE_WORK(ap_scan_work, ap_scan_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * Tasklet & timer for AP request polling and interrupts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static void ap_tasklet_fn(unsigned long);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static DECLARE_TASKLET_OLD(ap_tasklet, ap_tasklet_fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static DECLARE_WAIT_QUEUE_HEAD(ap_poll_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static struct task_struct *ap_poll_kthread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static DEFINE_MUTEX(ap_poll_thread_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static DEFINE_SPINLOCK(ap_poll_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static struct hrtimer ap_poll_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * In LPAR poll with 4kHz frequency. Poll every 250000 nanoseconds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * If z/VM change to 1500000 nanoseconds to adjust to z/VM polling.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static unsigned long long poll_timeout = 250000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /* Maximum domain id, if not given via qci */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static int ap_max_domain_id = 15;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* Maximum adapter id, if not given via qci */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static int ap_max_adapter_id = 63;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static struct bus_type ap_bus_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* Adapter interrupt definitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static void ap_interrupt_handler(struct airq_struct *airq, bool floating);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static bool ap_irq_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static struct airq_struct ap_airq = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .handler = ap_interrupt_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .isc = AP_ISC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * ap_airq_ptr() - Get the address of the adapter interrupt indicator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * Returns the address of the local-summary-indicator of the adapter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * interrupt handler for AP, or NULL if adapter interrupts are not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) void *ap_airq_ptr(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (ap_irq_flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return ap_airq.lsi_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * ap_interrupts_available(): Test if AP interrupts are available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * Returns 1 if AP interrupts are available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static int ap_interrupts_available(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return test_facility(65);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * ap_qci_available(): Test if AP configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * information can be queried via QCI subfunction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * Returns 1 if subfunction PQAP(QCI) is available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static int ap_qci_available(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return test_facility(12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^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) * ap_apft_available(): Test if AP facilities test (APFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * facility is available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * Returns 1 if APFT is is available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static int ap_apft_available(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) return test_facility(15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * ap_qact_available(): Test if the PQAP(QACT) subfunction is available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * Returns 1 if the QACT subfunction is available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static inline int ap_qact_available(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (ap_qci_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return ap_qci_info->qact;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * ap_fetch_qci_info(): Fetch cryptographic config info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * Returns the ap configuration info fetched via PQAP(QCI).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * On success 0 is returned, on failure a negative errno
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * is returned, e.g. if the PQAP(QCI) instruction is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * available, the return value will be -EOPNOTSUPP.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static inline int ap_fetch_qci_info(struct ap_config_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (!ap_qci_available())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) return ap_qci(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * ap_init_qci_info(): Allocate and query qci config info.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * Does also update the static variables ap_max_domain_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * and ap_max_adapter_id if this info is available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static void __init ap_init_qci_info(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (!ap_qci_available()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) AP_DBF_INFO("%s QCI not supported\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) ap_qci_info = kzalloc(sizeof(*ap_qci_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (!ap_qci_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if (ap_fetch_qci_info(ap_qci_info) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) kfree(ap_qci_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) ap_qci_info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) AP_DBF_INFO("%s successful fetched initial qci info\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (ap_qci_info->apxa) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (ap_qci_info->Na) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ap_max_adapter_id = ap_qci_info->Na;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) AP_DBF_INFO("%s new ap_max_adapter_id is %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) __func__, ap_max_adapter_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (ap_qci_info->Nd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) ap_max_domain_id = ap_qci_info->Nd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) AP_DBF_INFO("%s new ap_max_domain_id is %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) __func__, ap_max_domain_id);
^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) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * ap_test_config(): helper function to extract the nrth bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * within the unsigned int array field.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) static inline int ap_test_config(unsigned int *field, unsigned int nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return ap_test_bit((field + (nr >> 5)), (nr & 0x1f));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * ap_test_config_card_id(): Test, whether an AP card ID is configured.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * Returns 0 if the card is not configured
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * 1 if the card is configured or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * if the configuration information is not available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static inline int ap_test_config_card_id(unsigned int id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) if (id > ap_max_adapter_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (ap_qci_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return ap_test_config(ap_qci_info->apm, id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) return 1;
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * ap_test_config_usage_domain(): Test, whether an AP usage domain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * is configured.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * Returns 0 if the usage domain is not configured
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * 1 if the usage domain is configured or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * if the configuration information is not available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) int ap_test_config_usage_domain(unsigned int domain)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (domain > ap_max_domain_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (ap_qci_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return ap_test_config(ap_qci_info->aqm, domain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) EXPORT_SYMBOL(ap_test_config_usage_domain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * ap_test_config_ctrl_domain(): Test, whether an AP control domain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * is configured.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * @domain AP control domain ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * Returns 1 if the control domain is configured
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * 0 in all other cases
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) int ap_test_config_ctrl_domain(unsigned int domain)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (!ap_qci_info || domain > ap_max_domain_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return ap_test_config(ap_qci_info->adm, domain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) EXPORT_SYMBOL(ap_test_config_ctrl_domain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) * ap_queue_info(): Check and get AP queue info.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * Returns true if TAPQ succeeded and the info is filled or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * false otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) static bool ap_queue_info(ap_qid_t qid, int *q_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) unsigned int *q_fac, int *q_depth, bool *q_decfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct ap_queue_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) unsigned long info = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) /* make sure we don't run into a specifiation exception */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) if (AP_QID_CARD(qid) > ap_max_adapter_id ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) AP_QID_QUEUE(qid) > ap_max_domain_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) /* call TAPQ on this APQN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) status = ap_test_queue(qid, ap_apft_available(), &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) switch (status.response_code) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) case AP_RESPONSE_NORMAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) case AP_RESPONSE_RESET_IN_PROGRESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) case AP_RESPONSE_DECONFIGURED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) case AP_RESPONSE_CHECKSTOPPED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) case AP_RESPONSE_BUSY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) * According to the architecture in all these cases the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) * info should be filled. All bits 0 is not possible as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * there is at least one of the mode bits set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (WARN_ON_ONCE(!info))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) *q_type = (int)((info >> 24) & 0xff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) *q_fac = (unsigned int)(info >> 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) *q_depth = (int)(info & 0xff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) *q_decfg = status.response_code == AP_RESPONSE_DECONFIGURED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) switch (*q_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) /* For CEX2 and CEX3 the available functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) * are not reflected by the facilities bits.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) * Instead it is coded into the type. So here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) * modify the function bits based on the type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) case AP_DEVICE_TYPE_CEX2A:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) case AP_DEVICE_TYPE_CEX3A:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) *q_fac |= 0x08000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) case AP_DEVICE_TYPE_CEX2C:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) case AP_DEVICE_TYPE_CEX3C:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) *q_fac |= 0x10000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) * A response code which indicates, there is no info available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) void ap_wait(enum ap_sm_wait wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) ktime_t hr_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) switch (wait) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) case AP_SM_WAIT_AGAIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) case AP_SM_WAIT_INTERRUPT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (ap_irq_flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) if (ap_poll_kthread) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) wake_up(&ap_poll_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) case AP_SM_WAIT_TIMEOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) spin_lock_bh(&ap_poll_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) if (!hrtimer_is_queued(&ap_poll_timer)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) hr_time = poll_timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) hrtimer_forward_now(&ap_poll_timer, hr_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) hrtimer_restart(&ap_poll_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) spin_unlock_bh(&ap_poll_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) case AP_SM_WAIT_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) * ap_request_timeout(): Handling of request timeouts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) * @t: timer making this callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) * Handles request timeouts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) void ap_request_timeout(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) struct ap_queue *aq = from_timer(aq, t, timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) spin_lock_bh(&aq->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) ap_wait(ap_sm_event(aq, AP_SM_EVENT_TIMEOUT));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) spin_unlock_bh(&aq->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * ap_poll_timeout(): AP receive polling for finished AP requests.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * @unused: Unused pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * Schedules the AP tasklet using a high resolution timer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) static enum hrtimer_restart ap_poll_timeout(struct hrtimer *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) tasklet_schedule(&ap_tasklet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) return HRTIMER_NORESTART;
^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) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) * ap_interrupt_handler() - Schedule ap_tasklet on interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) * @airq: pointer to adapter interrupt descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static void ap_interrupt_handler(struct airq_struct *airq, bool floating)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) inc_irq_stat(IRQIO_APB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) tasklet_schedule(&ap_tasklet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) * ap_tasklet_fn(): Tasklet to poll all AP devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) * @dummy: Unused variable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) * Poll all AP devices on the bus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) static void ap_tasklet_fn(unsigned long dummy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) int bkt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) struct ap_queue *aq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) enum ap_sm_wait wait = AP_SM_WAIT_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) /* Reset the indicator if interrupts are used. Thus new interrupts can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) * be received. Doing it in the beginning of the tasklet is therefor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) * important that no requests on any AP get lost.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) if (ap_irq_flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) xchg(ap_airq.lsi_ptr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) spin_lock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) hash_for_each(ap_queues, bkt, aq, hnode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) spin_lock_bh(&aq->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) wait = min(wait, ap_sm_event_loop(aq, AP_SM_EVENT_POLL));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) spin_unlock_bh(&aq->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) spin_unlock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) ap_wait(wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) static int ap_pending_requests(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) int bkt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) struct ap_queue *aq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) spin_lock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) hash_for_each(ap_queues, bkt, aq, hnode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (aq->queue_count == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) spin_unlock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) spin_unlock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) * ap_poll_thread(): Thread that polls for finished requests.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) * @data: Unused pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * AP bus poll thread. The purpose of this thread is to poll for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) * finished requests in a loop if there is a "free" cpu - that is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * a cpu that doesn't have anything better to do. The polling stops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) * as soon as there is another task or if all messages have been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * delivered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) static int ap_poll_thread(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) DECLARE_WAITQUEUE(wait, current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) set_user_nice(current, MAX_NICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) set_freezable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) while (!kthread_should_stop()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) add_wait_queue(&ap_poll_wait, &wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) set_current_state(TASK_INTERRUPTIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) if (!ap_pending_requests()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) schedule();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) try_to_freeze();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) set_current_state(TASK_RUNNING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) remove_wait_queue(&ap_poll_wait, &wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (need_resched()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) schedule();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) try_to_freeze();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) ap_tasklet_fn(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) return 0;
^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) static int ap_poll_thread_start(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (ap_irq_flag || ap_poll_kthread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) mutex_lock(&ap_poll_thread_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) ap_poll_kthread = kthread_run(ap_poll_thread, NULL, "appoll");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) rc = PTR_ERR_OR_ZERO(ap_poll_kthread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) ap_poll_kthread = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) mutex_unlock(&ap_poll_thread_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) static void ap_poll_thread_stop(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (!ap_poll_kthread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) mutex_lock(&ap_poll_thread_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) kthread_stop(ap_poll_kthread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) ap_poll_kthread = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) mutex_unlock(&ap_poll_thread_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) #define is_card_dev(x) ((x)->parent == ap_root_device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) #define is_queue_dev(x) ((x)->parent != ap_root_device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) * ap_bus_match()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) * @dev: Pointer to device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) * @drv: Pointer to device_driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) * AP bus driver registration/unregistration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) static int ap_bus_match(struct device *dev, struct device_driver *drv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) struct ap_driver *ap_drv = to_ap_drv(drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) struct ap_device_id *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * Compare device type of the device with the list of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) * supported types of the device_driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) for (id = ap_drv->ids; id->match_flags; id++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) if (is_card_dev(dev) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) id->match_flags & AP_DEVICE_ID_MATCH_CARD_TYPE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) id->dev_type == to_ap_dev(dev)->device_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) if (is_queue_dev(dev) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) id->match_flags & AP_DEVICE_ID_MATCH_QUEUE_TYPE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) id->dev_type == to_ap_dev(dev)->device_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * ap_uevent(): Uevent function for AP devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) * @dev: Pointer to device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) * @env: Pointer to kobj_uevent_env
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) * It sets up a single environment variable DEV_TYPE which contains the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) * hardware device type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) static int ap_uevent(struct device *dev, struct kobj_uevent_env *env)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) struct ap_device *ap_dev = to_ap_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) int retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) if (!ap_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) /* Set up DEV_TYPE environment variable. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) retval = add_uevent_var(env, "DEV_TYPE=%04X", ap_dev->device_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) /* Add MODALIAS= */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) retval = add_uevent_var(env, "MODALIAS=ap:t%02X", ap_dev->device_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) static int __ap_queue_devices_with_id_unregister(struct device *dev, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) if (is_queue_dev(dev) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) AP_QID_CARD(to_ap_queue(dev)->qid) == (int)(long) data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) device_unregister(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) static struct bus_type ap_bus_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) .name = "ap",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) .match = &ap_bus_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) .uevent = &ap_uevent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) static int __ap_revise_reserved(struct device *dev, void *dummy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) int rc, card, queue, devres, drvres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if (is_queue_dev(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) card = AP_QID_CARD(to_ap_queue(dev)->qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) queue = AP_QID_QUEUE(to_ap_queue(dev)->qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) mutex_lock(&ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) devres = test_bit_inv(card, ap_perms.apm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) && test_bit_inv(queue, ap_perms.aqm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) mutex_unlock(&ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) drvres = to_ap_drv(dev->driver)->flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) & AP_DRIVER_FLAG_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) if (!!devres != !!drvres) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) AP_DBF_DBG("reprobing queue=%02x.%04x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) card, queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) rc = device_reprobe(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) static void ap_bus_revise_bindings(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) bus_for_each_dev(&ap_bus_type, NULL, NULL, __ap_revise_reserved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) int ap_owned_by_def_drv(int card, int queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) if (card < 0 || card >= AP_DEVICES || queue < 0 || queue >= AP_DOMAINS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) mutex_lock(&ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) if (test_bit_inv(card, ap_perms.apm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) && test_bit_inv(queue, ap_perms.aqm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) rc = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) mutex_unlock(&ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) EXPORT_SYMBOL(ap_owned_by_def_drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) int ap_apqn_in_matrix_owned_by_def_drv(unsigned long *apm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) unsigned long *aqm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) int card, queue, rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) mutex_lock(&ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) for (card = 0; !rc && card < AP_DEVICES; card++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) if (test_bit_inv(card, apm) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) test_bit_inv(card, ap_perms.apm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) for (queue = 0; !rc && queue < AP_DOMAINS; queue++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) if (test_bit_inv(queue, aqm) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) test_bit_inv(queue, ap_perms.aqm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) rc = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) mutex_unlock(&ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) EXPORT_SYMBOL(ap_apqn_in_matrix_owned_by_def_drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) static int ap_device_probe(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) struct ap_device *ap_dev = to_ap_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) struct ap_driver *ap_drv = to_ap_drv(dev->driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) int card, queue, devres, drvres, rc = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) if (!get_device(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (is_queue_dev(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) * If the apqn is marked as reserved/used by ap bus and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) * default drivers, only probe with drivers with the default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * flag set. If it is not marked, only probe with drivers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) * with the default flag not set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) card = AP_QID_CARD(to_ap_queue(dev)->qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) queue = AP_QID_QUEUE(to_ap_queue(dev)->qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) mutex_lock(&ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) devres = test_bit_inv(card, ap_perms.apm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) && test_bit_inv(queue, ap_perms.aqm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) mutex_unlock(&ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) drvres = ap_drv->flags & AP_DRIVER_FLAG_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (!!devres != !!drvres)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) /* Add queue/card to list of active queues/cards */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) spin_lock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if (is_queue_dev(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) hash_add(ap_queues, &to_ap_queue(dev)->hnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) to_ap_queue(dev)->qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) spin_unlock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) ap_dev->drv = ap_drv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) rc = ap_drv->probe ? ap_drv->probe(ap_dev) : -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) spin_lock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) if (is_queue_dev(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) hash_del(&to_ap_queue(dev)->hnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) spin_unlock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) ap_dev->drv = NULL;
^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) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) static int ap_device_remove(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) struct ap_device *ap_dev = to_ap_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) struct ap_driver *ap_drv = ap_dev->drv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) /* prepare ap queue device removal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) if (is_queue_dev(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) ap_queue_prepare_remove(to_ap_queue(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) /* driver's chance to clean up gracefully */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) if (ap_drv->remove)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) ap_drv->remove(ap_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) /* now do the ap queue device remove */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) if (is_queue_dev(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) ap_queue_remove(to_ap_queue(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) /* Remove queue/card from list of active queues/cards */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) spin_lock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (is_queue_dev(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) hash_del(&to_ap_queue(dev)->hnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) spin_unlock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) struct ap_queue *ap_get_qdev(ap_qid_t qid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) int bkt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) struct ap_queue *aq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) spin_lock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) hash_for_each(ap_queues, bkt, aq, hnode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) if (aq->qid == qid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) get_device(&aq->ap_dev.device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) spin_unlock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) return aq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) spin_unlock_bh(&ap_queues_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) EXPORT_SYMBOL(ap_get_qdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) int ap_driver_register(struct ap_driver *ap_drv, struct module *owner,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) struct device_driver *drv = &ap_drv->driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) drv->bus = &ap_bus_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) drv->probe = ap_device_probe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) drv->remove = ap_device_remove;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) drv->owner = owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) drv->name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) return driver_register(drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) EXPORT_SYMBOL(ap_driver_register);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) void ap_driver_unregister(struct ap_driver *ap_drv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) driver_unregister(&ap_drv->driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) EXPORT_SYMBOL(ap_driver_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) void ap_bus_force_rescan(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) /* processing a asynchronous bus rescan */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) del_timer(&ap_config_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) queue_work(system_long_wq, &ap_scan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) flush_work(&ap_scan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) EXPORT_SYMBOL(ap_bus_force_rescan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) * A config change has happened, force an ap bus rescan.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) void ap_bus_cfg_chg(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) AP_DBF_DBG("%s config change, forcing bus rescan\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) ap_bus_force_rescan();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) * hex2bitmap() - parse hex mask string and set bitmap.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) * Valid strings are "0x012345678" with at least one valid hex number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) * Rest of the bitmap to the right is padded with 0. No spaces allowed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) * within the string, the leading 0x may be omitted.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) * Returns the bitmask with exactly the bits set as given by the hex
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) * string (both in big endian order).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) static int hex2bitmap(const char *str, unsigned long *bitmap, int bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) int i, n, b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) /* bits needs to be a multiple of 8 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) if (bits & 0x07)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) if (str[0] == '0' && str[1] == 'x')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) str++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) if (*str == 'x')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) str++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) for (i = 0; isxdigit(*str) && i < bits; str++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) b = hex_to_bin(*str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) for (n = 0; n < 4; n++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) if (b & (0x08 >> n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) set_bit_inv(i + n, bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) i += 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) if (*str == '\n')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) str++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) if (*str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) * modify_bitmap() - parse bitmask argument and modify an existing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) * bit mask accordingly. A concatenation (done with ',') of these
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) * terms is recognized:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) * +<bitnr>[-<bitnr>] or -<bitnr>[-<bitnr>]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) * <bitnr> may be any valid number (hex, decimal or octal) in the range
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) * 0...bits-1; the leading + or - is required. Here are some examples:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) * +0-15,+32,-128,-0xFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) * -0-255,+1-16,+0x128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) * +1,+2,+3,+4,-5,-7-10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) * Returns the new bitmap after all changes have been applied. Every
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) * positive value in the string will set a bit and every negative value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) * in the string will clear a bit. As a bit may be touched more than once,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) * the last 'operation' wins:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) * +0-255,-128 = first bits 0-255 will be set, then bit 128 will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) * cleared again. All other bits are unmodified.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) static int modify_bitmap(const char *str, unsigned long *bitmap, int bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) int a, i, z;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) char *np, sign;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) /* bits needs to be a multiple of 8 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) if (bits & 0x07)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) while (*str) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) sign = *str++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) if (sign != '+' && sign != '-')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) a = z = simple_strtoul(str, &np, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) if (str == np || a >= bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) str = np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) if (*str == '-') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) z = simple_strtoul(++str, &np, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) if (str == np || a > z || z >= bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) str = np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) for (i = a; i <= z; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) if (sign == '+')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) set_bit_inv(i, bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) clear_bit_inv(i, bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) while (*str == ',' || *str == '\n')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) str++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) int ap_parse_mask_str(const char *str,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) unsigned long *bitmap, int bits,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) struct mutex *lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) unsigned long *newmap, size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) /* bits needs to be a multiple of 8 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) if (bits & 0x07)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) size = BITS_TO_LONGS(bits)*sizeof(unsigned long);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) newmap = kmalloc(size, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) if (!newmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) if (mutex_lock_interruptible(lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) kfree(newmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) return -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) if (*str == '+' || *str == '-') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) memcpy(newmap, bitmap, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) rc = modify_bitmap(str, newmap, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) memset(newmap, 0, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) rc = hex2bitmap(str, newmap, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) if (rc == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) memcpy(bitmap, newmap, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) mutex_unlock(lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) kfree(newmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) EXPORT_SYMBOL(ap_parse_mask_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) * AP bus attributes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) static ssize_t ap_domain_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) return scnprintf(buf, PAGE_SIZE, "%d\n", ap_domain_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) static ssize_t ap_domain_store(struct bus_type *bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) int domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) if (sscanf(buf, "%i\n", &domain) != 1 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) domain < 0 || domain > ap_max_domain_id ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) !test_bit_inv(domain, ap_perms.aqm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) spin_lock_bh(&ap_domain_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) ap_domain_index = domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) spin_unlock_bh(&ap_domain_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) AP_DBF_INFO("stored new default domain=%d\n", domain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) static BUS_ATTR_RW(ap_domain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) static ssize_t ap_control_domain_mask_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) if (!ap_qci_info) /* QCI not supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) return scnprintf(buf, PAGE_SIZE, "not supported\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) return scnprintf(buf, PAGE_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) "0x%08x%08x%08x%08x%08x%08x%08x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) ap_qci_info->adm[0], ap_qci_info->adm[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) ap_qci_info->adm[2], ap_qci_info->adm[3],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) ap_qci_info->adm[4], ap_qci_info->adm[5],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) ap_qci_info->adm[6], ap_qci_info->adm[7]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) static BUS_ATTR_RO(ap_control_domain_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) static ssize_t ap_usage_domain_mask_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) if (!ap_qci_info) /* QCI not supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) return scnprintf(buf, PAGE_SIZE, "not supported\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) return scnprintf(buf, PAGE_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) "0x%08x%08x%08x%08x%08x%08x%08x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) ap_qci_info->aqm[0], ap_qci_info->aqm[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) ap_qci_info->aqm[2], ap_qci_info->aqm[3],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) ap_qci_info->aqm[4], ap_qci_info->aqm[5],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) ap_qci_info->aqm[6], ap_qci_info->aqm[7]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) static BUS_ATTR_RO(ap_usage_domain_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) static ssize_t ap_adapter_mask_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) if (!ap_qci_info) /* QCI not supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) return scnprintf(buf, PAGE_SIZE, "not supported\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) return scnprintf(buf, PAGE_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) "0x%08x%08x%08x%08x%08x%08x%08x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) ap_qci_info->apm[0], ap_qci_info->apm[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) ap_qci_info->apm[2], ap_qci_info->apm[3],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) ap_qci_info->apm[4], ap_qci_info->apm[5],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) ap_qci_info->apm[6], ap_qci_info->apm[7]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) static BUS_ATTR_RO(ap_adapter_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) static ssize_t ap_interrupts_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) return scnprintf(buf, PAGE_SIZE, "%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) ap_irq_flag ? 1 : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) static BUS_ATTR_RO(ap_interrupts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) static ssize_t config_time_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) return scnprintf(buf, PAGE_SIZE, "%d\n", ap_config_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) static ssize_t config_time_store(struct bus_type *bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) int time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) if (sscanf(buf, "%d\n", &time) != 1 || time < 5 || time > 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) ap_config_time = time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) mod_timer(&ap_config_timer, jiffies + ap_config_time * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) static BUS_ATTR_RW(config_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) static ssize_t poll_thread_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) return scnprintf(buf, PAGE_SIZE, "%d\n", ap_poll_kthread ? 1 : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) static ssize_t poll_thread_store(struct bus_type *bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) int flag, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) if (sscanf(buf, "%d\n", &flag) != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) if (flag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) rc = ap_poll_thread_start();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) count = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) ap_poll_thread_stop();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) static BUS_ATTR_RW(poll_thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) static ssize_t poll_timeout_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) return scnprintf(buf, PAGE_SIZE, "%llu\n", poll_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) static ssize_t poll_timeout_store(struct bus_type *bus, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) unsigned long long time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) ktime_t hr_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) /* 120 seconds = maximum poll interval */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) if (sscanf(buf, "%llu\n", &time) != 1 || time < 1 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) time > 120000000000ULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) poll_timeout = time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) hr_time = poll_timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) spin_lock_bh(&ap_poll_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) hrtimer_cancel(&ap_poll_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) hrtimer_set_expires(&ap_poll_timer, hr_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) hrtimer_start_expires(&ap_poll_timer, HRTIMER_MODE_ABS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) spin_unlock_bh(&ap_poll_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) static BUS_ATTR_RW(poll_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) static ssize_t ap_max_domain_id_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) return scnprintf(buf, PAGE_SIZE, "%d\n", ap_max_domain_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) static BUS_ATTR_RO(ap_max_domain_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) static ssize_t ap_max_adapter_id_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) return scnprintf(buf, PAGE_SIZE, "%d\n", ap_max_adapter_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) static BUS_ATTR_RO(ap_max_adapter_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) static ssize_t apmask_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) if (mutex_lock_interruptible(&ap_perms_mutex))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) return -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) rc = scnprintf(buf, PAGE_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) "0x%016lx%016lx%016lx%016lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) ap_perms.apm[0], ap_perms.apm[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) ap_perms.apm[2], ap_perms.apm[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) mutex_unlock(&ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) static ssize_t apmask_store(struct bus_type *bus, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) rc = ap_parse_mask_str(buf, ap_perms.apm, AP_DEVICES, &ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) ap_bus_revise_bindings();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) static BUS_ATTR_RW(apmask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) static ssize_t aqmask_show(struct bus_type *bus, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) if (mutex_lock_interruptible(&ap_perms_mutex))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) return -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) rc = scnprintf(buf, PAGE_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) "0x%016lx%016lx%016lx%016lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) ap_perms.aqm[0], ap_perms.aqm[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) ap_perms.aqm[2], ap_perms.aqm[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) mutex_unlock(&ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) static ssize_t aqmask_store(struct bus_type *bus, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) rc = ap_parse_mask_str(buf, ap_perms.aqm, AP_DOMAINS, &ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) ap_bus_revise_bindings();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) static BUS_ATTR_RW(aqmask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) static struct bus_attribute *const ap_bus_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) &bus_attr_ap_domain,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) &bus_attr_ap_control_domain_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) &bus_attr_ap_usage_domain_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) &bus_attr_ap_adapter_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) &bus_attr_config_time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) &bus_attr_poll_thread,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) &bus_attr_ap_interrupts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) &bus_attr_poll_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) &bus_attr_ap_max_domain_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) &bus_attr_ap_max_adapter_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) &bus_attr_apmask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) &bus_attr_aqmask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) * ap_select_domain(): Select an AP domain if possible and we haven't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) * already done so before.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) static void ap_select_domain(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) struct ap_queue_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) int card, dom;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) * Choose the default domain. Either the one specified with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) * the "domain=" parameter or the first domain with at least
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) * one valid APQN.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) spin_lock_bh(&ap_domain_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) if (ap_domain_index >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) /* Domain has already been selected. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) for (dom = 0; dom <= ap_max_domain_id; dom++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) if (!ap_test_config_usage_domain(dom) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) !test_bit_inv(dom, ap_perms.aqm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) for (card = 0; card <= ap_max_adapter_id; card++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) if (!ap_test_config_card_id(card) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) !test_bit_inv(card, ap_perms.apm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) status = ap_test_queue(AP_MKQID(card, dom),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) ap_apft_available(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) if (status.response_code == AP_RESPONSE_NORMAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) if (card <= ap_max_adapter_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) if (dom <= ap_max_domain_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) ap_domain_index = dom;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) AP_DBF_INFO("%s new default domain is %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) __func__, ap_domain_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) spin_unlock_bh(&ap_domain_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) * This function checks the type and returns either 0 for not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) * supported or the highest compatible type value (which may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) * include the input type value).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) static int ap_get_compatible_type(ap_qid_t qid, int rawtype, unsigned int func)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) int comp_type = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) /* < CEX2A is not supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) if (rawtype < AP_DEVICE_TYPE_CEX2A) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) AP_DBF_WARN("get_comp_type queue=%02x.%04x unsupported type %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) AP_QID_CARD(qid), AP_QID_QUEUE(qid), rawtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) /* up to CEX7 known and fully supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) if (rawtype <= AP_DEVICE_TYPE_CEX7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) return rawtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) * unknown new type > CEX7, check for compatibility
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) * to the highest known and supported type which is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) * currently CEX7 with the help of the QACT function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) if (ap_qact_available()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) struct ap_queue_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) union ap_qact_ap_info apinfo = {0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) apinfo.mode = (func >> 26) & 0x07;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) apinfo.cat = AP_DEVICE_TYPE_CEX7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) status = ap_qact(qid, 0, &apinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) if (status.response_code == AP_RESPONSE_NORMAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) && apinfo.cat >= AP_DEVICE_TYPE_CEX2A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) && apinfo.cat <= AP_DEVICE_TYPE_CEX7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) comp_type = apinfo.cat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) if (!comp_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) AP_DBF_WARN("get_comp_type queue=%02x.%04x unable to map type %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) AP_QID_CARD(qid), AP_QID_QUEUE(qid), rawtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) else if (comp_type != rawtype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) AP_DBF_INFO("get_comp_type queue=%02x.%04x map type %d to %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) AP_QID_CARD(qid), AP_QID_QUEUE(qid),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) rawtype, comp_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) return comp_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) * Helper function to be used with bus_find_dev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) * matches for the card device with the given id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) static int __match_card_device_with_id(struct device *dev, const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) return is_card_dev(dev) && to_ap_card(dev)->id == (int)(long)(void *) data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) * Helper function to be used with bus_find_dev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) * matches for the queue device with a given qid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) static int __match_queue_device_with_qid(struct device *dev, const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) return is_queue_dev(dev) && to_ap_queue(dev)->qid == (int)(long) data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) * Helper function to be used with bus_find_dev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) * matches any queue device with given queue id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) static int __match_queue_device_with_queue_id(struct device *dev, const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) return is_queue_dev(dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) && AP_QID_QUEUE(to_ap_queue(dev)->qid) == (int)(long) data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) * Helper function for ap_scan_bus().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) * Remove card device and associated queue devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) static inline void ap_scan_rm_card_dev_and_queue_devs(struct ap_card *ac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) bus_for_each_dev(&ap_bus_type, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) (void *)(long) ac->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) __ap_queue_devices_with_id_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) device_unregister(&ac->ap_dev.device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) * Helper function for ap_scan_bus().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) * Does the scan bus job for all the domains within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) * a valid adapter given by an ap_card ptr.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) static inline void ap_scan_domains(struct ap_card *ac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) bool decfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) ap_qid_t qid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) unsigned int func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) struct ap_queue *aq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) int rc, dom, depth, type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) * Go through the configuration for the domains and compare them
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) * to the existing queue devices. Also take care of the config
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) * and error state for the queue devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) for (dom = 0; dom <= ap_max_domain_id; dom++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) qid = AP_MKQID(ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) dev = bus_find_device(&ap_bus_type, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) (void *)(long) qid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) __match_queue_device_with_qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) aq = dev ? to_ap_queue(dev) : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) if (!ap_test_config_usage_domain(dom)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) if (dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) AP_DBF_INFO("%s(%d,%d) not in config any more, rm queue device\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) __func__, ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) device_unregister(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) /* domain is valid, get info from this APQN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) if (!ap_queue_info(qid, &type, &func, &depth, &decfg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) if (aq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) AP_DBF_INFO(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) "%s(%d,%d) ap_queue_info() not successful, rm queue device\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) __func__, ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) device_unregister(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) /* if no queue device exists, create a new one */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) if (!aq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) aq = ap_queue_create(qid, ac->ap_dev.device_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) if (!aq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) AP_DBF_WARN("%s(%d,%d) ap_queue_create() failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) __func__, ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) aq->card = ac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) aq->config = !decfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) dev = &aq->ap_dev.device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) dev->bus = &ap_bus_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) dev->parent = &ac->ap_dev.device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) dev_set_name(dev, "%02x.%04x", ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) /* register queue device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) rc = device_register(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) AP_DBF_WARN("%s(%d,%d) device_register() failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) __func__, ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) goto put_dev_and_continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) /* get it and thus adjust reference counter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) get_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) if (decfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) AP_DBF_INFO("%s(%d,%d) new (decfg) queue device created\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) __func__, ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) AP_DBF_INFO("%s(%d,%d) new queue device created\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) __func__, ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) goto put_dev_and_continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) /* Check config state on the already existing queue device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) spin_lock_bh(&aq->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) if (decfg && aq->config) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) /* config off this queue device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) aq->config = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) if (aq->dev_state > AP_DEV_STATE_UNINITIATED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) aq->dev_state = AP_DEV_STATE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) aq->last_err_rc = AP_RESPONSE_DECONFIGURED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) spin_unlock_bh(&aq->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) AP_DBF_INFO("%s(%d,%d) queue device config off\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) __func__, ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) /* 'receive' pending messages with -EAGAIN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) ap_flush_queue(aq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) goto put_dev_and_continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) if (!decfg && !aq->config) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) /* config on this queue device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) aq->config = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) if (aq->dev_state > AP_DEV_STATE_UNINITIATED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) aq->dev_state = AP_DEV_STATE_OPERATING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) aq->sm_state = AP_SM_STATE_RESET_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) spin_unlock_bh(&aq->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) AP_DBF_INFO("%s(%d,%d) queue device config on\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) __func__, ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) goto put_dev_and_continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) /* handle other error states */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) if (!decfg && aq->dev_state == AP_DEV_STATE_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) spin_unlock_bh(&aq->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) /* 'receive' pending messages with -EAGAIN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) ap_flush_queue(aq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) /* re-init (with reset) the queue device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) ap_queue_init_state(aq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) AP_DBF_INFO("%s(%d,%d) queue device reinit enforced\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) __func__, ac->id, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) goto put_dev_and_continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) spin_unlock_bh(&aq->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) put_dev_and_continue:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) * Helper function for ap_scan_bus().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) * Does the scan bus job for the given adapter id.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) static inline void ap_scan_adapter(int ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) bool decfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) ap_qid_t qid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) unsigned int func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) struct ap_card *ac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) int rc, dom, depth, type, comp_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) /* Is there currently a card device for this adapter ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) dev = bus_find_device(&ap_bus_type, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) (void *)(long) ap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) __match_card_device_with_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) ac = dev ? to_ap_card(dev) : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) /* Adapter not in configuration ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) if (!ap_test_config_card_id(ap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) if (ac) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) AP_DBF_INFO("%s(%d) ap not in config any more, rm card and queue devices\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) __func__, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) ap_scan_rm_card_dev_and_queue_devs(ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) * Adapter ap is valid in the current configuration. So do some checks:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) * If no card device exists, build one. If a card device exists, check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) * for type and functions changed. For all this we need to find a valid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) * APQN first.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) for (dom = 0; dom <= ap_max_domain_id; dom++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) if (ap_test_config_usage_domain(dom)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) qid = AP_MKQID(ap, dom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) if (ap_queue_info(qid, &type, &func, &depth, &decfg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) if (dom > ap_max_domain_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) /* Could not find a valid APQN for this adapter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) if (ac) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) AP_DBF_INFO(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) "%s(%d) no type info (no APQN found), rm card and queue devices\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) __func__, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) ap_scan_rm_card_dev_and_queue_devs(ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) AP_DBF_DBG("%s(%d) no type info (no APQN found), ignored\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) __func__, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) if (!type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) /* No apdater type info available, an unusable adapter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) if (ac) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) AP_DBF_INFO("%s(%d) no valid type (0) info, rm card and queue devices\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) __func__, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) ap_scan_rm_card_dev_and_queue_devs(ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) AP_DBF_DBG("%s(%d) no valid type (0) info, ignored\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) __func__, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) if (ac) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) /* Check APQN against existing card device for changes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) if (ac->raw_hwtype != type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) AP_DBF_INFO("%s(%d) hwtype %d changed, rm card and queue devices\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) __func__, ap, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) ap_scan_rm_card_dev_and_queue_devs(ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) ac = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) } else if (ac->functions != func) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) AP_DBF_INFO("%s(%d) functions 0x%08x changed, rm card and queue devices\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) __func__, ap, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) ap_scan_rm_card_dev_and_queue_devs(ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) ac = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) if (decfg && ac->config) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) ac->config = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) AP_DBF_INFO("%s(%d) card device config off\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) __func__, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) if (!decfg && !ac->config) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) ac->config = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) AP_DBF_INFO("%s(%d) card device config on\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) __func__, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) if (!ac) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) /* Build a new card device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) comp_type = ap_get_compatible_type(qid, type, func);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) if (!comp_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) AP_DBF_WARN("%s(%d) type %d, can't get compatibility type\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) __func__, ap, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) ac = ap_card_create(ap, depth, type, comp_type, func);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) if (!ac) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) AP_DBF_WARN("%s(%d) ap_card_create() failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) __func__, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) ac->config = !decfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) dev = &ac->ap_dev.device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) dev->bus = &ap_bus_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) dev->parent = ap_root_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) dev_set_name(dev, "card%02x", ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) /* Register the new card device with AP bus */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) rc = device_register(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) AP_DBF_WARN("%s(%d) device_register() failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) __func__, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) /* get it and thus adjust reference counter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) get_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) if (decfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) AP_DBF_INFO("%s(%d) new (decfg) card device type=%d func=0x%08x created\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) __func__, ap, type, func);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) AP_DBF_INFO("%s(%d) new card device type=%d func=0x%08x created\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) __func__, ap, type, func);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) /* Verify the domains and the queue devices for this card */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) ap_scan_domains(ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) /* release the card device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) put_device(&ac->ap_dev.device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) * ap_scan_bus(): Scan the AP bus for new devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) * Runs periodically, workqueue timer (ap_config_time)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) static void ap_scan_bus(struct work_struct *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) int ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) ap_fetch_qci_info(ap_qci_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) ap_select_domain();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) AP_DBF_DBG("%s running\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) /* loop over all possible adapters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) for (ap = 0; ap <= ap_max_adapter_id; ap++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) ap_scan_adapter(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) /* check if there is at least one queue available with default domain */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) if (ap_domain_index >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) struct device *dev =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) bus_find_device(&ap_bus_type, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) (void *)(long) ap_domain_index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) __match_queue_device_with_queue_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) if (dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) AP_DBF_INFO("no queue device with default domain %d available\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) ap_domain_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) mod_timer(&ap_config_timer, jiffies + ap_config_time * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) static void ap_config_timeout(struct timer_list *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) queue_work(system_long_wq, &ap_scan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) static int __init ap_debug_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) ap_dbf_info = debug_register("ap", 1, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) DBF_MAX_SPRINTF_ARGS * sizeof(long));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) debug_register_view(ap_dbf_info, &debug_sprintf_view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) debug_set_level(ap_dbf_info, DBF_ERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) static void __init ap_perms_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) /* all resources useable if no kernel parameter string given */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) memset(&ap_perms.ioctlm, 0xFF, sizeof(ap_perms.ioctlm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) memset(&ap_perms.apm, 0xFF, sizeof(ap_perms.apm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) memset(&ap_perms.aqm, 0xFF, sizeof(ap_perms.aqm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) /* apm kernel parameter string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) if (apm_str) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) memset(&ap_perms.apm, 0, sizeof(ap_perms.apm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) ap_parse_mask_str(apm_str, ap_perms.apm, AP_DEVICES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) &ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) /* aqm kernel parameter string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) if (aqm_str) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) memset(&ap_perms.aqm, 0, sizeof(ap_perms.aqm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) ap_parse_mask_str(aqm_str, ap_perms.aqm, AP_DOMAINS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) &ap_perms_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) * ap_module_init(): The module initialization code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) * Initializes the module.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) static int __init ap_module_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) int rc, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) rc = ap_debug_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) if (!ap_instructions_available()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) pr_warn("The hardware system does not support AP instructions\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) /* init ap_queue hashtable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) hash_init(ap_queues);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) /* set up the AP permissions (ioctls, ap and aq masks) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) ap_perms_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) /* Get AP configuration data if available */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) ap_init_qci_info();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) /* check default domain setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) if (ap_domain_index < -1 || ap_domain_index > ap_max_domain_id ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) (ap_domain_index >= 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) !test_bit_inv(ap_domain_index, ap_perms.aqm))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) pr_warn("%d is not a valid cryptographic domain\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) ap_domain_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) ap_domain_index = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) /* enable interrupts if available */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) if (ap_interrupts_available()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) rc = register_adapter_interrupt(&ap_airq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) ap_irq_flag = (rc == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) /* Create /sys/bus/ap. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) rc = bus_register(&ap_bus_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) for (i = 0; ap_bus_attrs[i]; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) rc = bus_create_file(&ap_bus_type, ap_bus_attrs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) goto out_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) /* Create /sys/devices/ap. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) ap_root_device = root_device_register("ap");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) rc = PTR_ERR_OR_ZERO(ap_root_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) goto out_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) /* Setup the AP bus rescan timer. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) timer_setup(&ap_config_timer, ap_config_timeout, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) * Setup the high resultion poll timer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) * If we are running under z/VM adjust polling to z/VM polling rate.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) if (MACHINE_IS_VM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) poll_timeout = 1500000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) hrtimer_init(&ap_poll_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) ap_poll_timer.function = ap_poll_timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) /* Start the low priority AP bus poll thread. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) if (ap_thread_flag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) rc = ap_poll_thread_start();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) goto out_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) queue_work(system_long_wq, &ap_scan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) out_work:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) hrtimer_cancel(&ap_poll_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) root_device_unregister(ap_root_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) out_bus:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) while (i--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) bus_remove_file(&ap_bus_type, ap_bus_attrs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) bus_unregister(&ap_bus_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) if (ap_irq_flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) unregister_adapter_interrupt(&ap_airq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) kfree(ap_qci_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) device_initcall(ap_module_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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