^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * nosy - Snoop mode driver for TI PCILynx 1394 controllers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2002-2007 Kristian Høgsberg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kref.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/miscdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/sched.h> /* required for linux/wait.h */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/time64.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/timex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "nosy.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include "nosy-user.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define TCODE_PHY_PACKET 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define PCI_DEVICE_ID_TI_PCILYNX 0x8000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static char driver_name[] = KBUILD_MODNAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /* this is the physical layout of a PCL, its size is 128 bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct pcl {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) __le32 next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) __le32 async_error_next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) u32 user_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) __le32 pcl_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) __le32 remaining_transfer_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) __le32 next_data_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) __le32 control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) __le32 pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) } buffer[13];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct packet {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) unsigned int length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) char data[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct packet_buffer {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) char *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) size_t capacity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) long total_packet_count, lost_packet_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) atomic_t size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct packet *head, *tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) wait_queue_head_t wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct pcilynx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct pci_dev *pci_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) __iomem char *registers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct pcl *rcv_start_pcl, *rcv_pcl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) __le32 *rcv_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) dma_addr_t rcv_start_pcl_bus, rcv_pcl_bus, rcv_buffer_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) spinlock_t client_list_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct list_head client_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct miscdevice misc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct list_head link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct kref kref;
^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) static inline struct pcilynx *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) lynx_get(struct pcilynx *lynx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) kref_get(&lynx->kref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return lynx;
^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) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) lynx_release(struct kref *kref)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) kfree(container_of(kref, struct pcilynx, kref));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) lynx_put(struct pcilynx *lynx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) kref_put(&lynx->kref, lynx_release);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct client {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct pcilynx *lynx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) u32 tcode_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct packet_buffer buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct list_head link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static DEFINE_MUTEX(card_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static LIST_HEAD(card_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) packet_buffer_init(struct packet_buffer *buffer, size_t capacity)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) buffer->data = kmalloc(capacity, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (buffer->data == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) buffer->head = (struct packet *) buffer->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) buffer->tail = (struct packet *) buffer->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) buffer->capacity = capacity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) buffer->lost_packet_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) atomic_set(&buffer->size, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) init_waitqueue_head(&buffer->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) packet_buffer_destroy(struct packet_buffer *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) kfree(buffer->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) packet_buffer_get(struct client *client, char __user *data, size_t user_length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) struct packet_buffer *buffer = &client->buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) size_t length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) char *end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (wait_event_interruptible(buffer->wait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) atomic_read(&buffer->size) > 0) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) list_empty(&client->lynx->link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (atomic_read(&buffer->size) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) /* FIXME: Check length <= user_length. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) end = buffer->data + buffer->capacity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) length = buffer->head->length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (&buffer->head->data[length] < end) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (copy_to_user(data, buffer->head->data, length))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) buffer->head = (struct packet *) &buffer->head->data[length];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) size_t split = end - buffer->head->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) if (copy_to_user(data, buffer->head->data, split))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) if (copy_to_user(data + split, buffer->data, length - split))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) buffer->head = (struct packet *) &buffer->data[length - split];
^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) * Decrease buffer->size as the last thing, since this is what
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * keeps the interrupt from overwriting the packet we are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * retrieving from the buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) atomic_sub(sizeof(struct packet) + length, &buffer->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) packet_buffer_put(struct packet_buffer *buffer, void *data, size_t length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) char *end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) buffer->total_packet_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (buffer->capacity <
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) atomic_read(&buffer->size) + sizeof(struct packet) + length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) buffer->lost_packet_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) end = buffer->data + buffer->capacity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) buffer->tail->length = length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (&buffer->tail->data[length] < end) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) memcpy(buffer->tail->data, data, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) buffer->tail = (struct packet *) &buffer->tail->data[length];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) size_t split = end - buffer->tail->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) memcpy(buffer->tail->data, data, split);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) memcpy(buffer->data, data + split, length - split);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) buffer->tail = (struct packet *) &buffer->data[length - split];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) /* Finally, adjust buffer size and wake up userspace reader. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) atomic_add(sizeof(struct packet) + length, &buffer->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) wake_up_interruptible(&buffer->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) reg_write(struct pcilynx *lynx, int offset, u32 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) writel(data, lynx->registers + offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static inline u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) reg_read(struct pcilynx *lynx, int offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return readl(lynx->registers + offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) reg_set_bits(struct pcilynx *lynx, int offset, u32 mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) reg_write(lynx, offset, (reg_read(lynx, offset) | mask));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * Maybe the pcl programs could be set up to just append data instead
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * of using a whole packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) run_pcl(struct pcilynx *lynx, dma_addr_t pcl_bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) int dmachan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) reg_write(lynx, DMA0_CURRENT_PCL + dmachan * 0x20, pcl_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) reg_write(lynx, DMA0_CHAN_CTRL + dmachan * 0x20,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) DMA_CHAN_CTRL_ENABLE | DMA_CHAN_CTRL_LINK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) set_phy_reg(struct pcilynx *lynx, int addr, int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) if (addr > 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) dev_err(&lynx->pci_device->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) "PHY register address %d out of range\n", addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (val > 0xff) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) dev_err(&lynx->pci_device->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) "PHY register value %d out of range\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) reg_write(lynx, LINK_PHY, LINK_PHY_WRITE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) LINK_PHY_ADDR(addr) | LINK_PHY_WDATA(val));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) nosy_open(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) int minor = iminor(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct pcilynx *tmp, *lynx = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) mutex_lock(&card_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) list_for_each_entry(tmp, &card_list, link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (tmp->misc.minor == minor) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) lynx = lynx_get(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) mutex_unlock(&card_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (lynx == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) client = kmalloc(sizeof *client, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) if (client == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) client->tcode_mask = ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) client->lynx = lynx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) INIT_LIST_HEAD(&client->link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (packet_buffer_init(&client->buffer, 128 * 1024) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) file->private_data = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) return stream_open(inode, file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) kfree(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) lynx_put(lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) nosy_release(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct client *client = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) struct pcilynx *lynx = client->lynx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) spin_lock_irq(&lynx->client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) list_del_init(&client->link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) spin_unlock_irq(&lynx->client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) packet_buffer_destroy(&client->buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) kfree(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) lynx_put(lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static __poll_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) nosy_poll(struct file *file, poll_table *pt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) struct client *client = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) __poll_t ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) poll_wait(file, &client->buffer.wait, pt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (atomic_read(&client->buffer.size) > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) ret = EPOLLIN | EPOLLRDNORM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (list_empty(&client->lynx->link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) ret |= EPOLLHUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) nosy_read(struct file *file, char __user *buffer, size_t count, loff_t *offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct client *client = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return packet_buffer_get(client, buffer, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) static long
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) nosy_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) struct client *client = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) spinlock_t *client_list_lock = &client->lynx->client_list_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) struct nosy_stats stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) case NOSY_IOC_GET_STATS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) spin_lock_irq(client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) stats.total_packet_count = client->buffer.total_packet_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) stats.lost_packet_count = client->buffer.lost_packet_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) spin_unlock_irq(client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if (copy_to_user((void __user *) arg, &stats, sizeof stats))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) case NOSY_IOC_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) spin_lock_irq(client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) if (list_empty(&client->link)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) list_add_tail(&client->link, &client->lynx->client_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) spin_unlock_irq(client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) case NOSY_IOC_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) spin_lock_irq(client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) list_del_init(&client->link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) spin_unlock_irq(client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) case NOSY_IOC_FILTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) spin_lock_irq(client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) client->tcode_mask = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) spin_unlock_irq(client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) /* Flush buffer, configure filter. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static const struct file_operations nosy_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) .read = nosy_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) .unlocked_ioctl = nosy_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) .poll = nosy_poll,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) .open = nosy_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) .release = nosy_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) #define PHY_PACKET_SIZE 12 /* 1 payload, 1 inverse, 1 ack = 3 quadlets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) packet_irq_handler(struct pcilynx *lynx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) struct client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) u32 tcode_mask, tcode, timestamp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) size_t length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) struct timespec64 ts64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) /* FIXME: Also report rcv_speed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) length = __le32_to_cpu(lynx->rcv_pcl->pcl_status) & 0x00001fff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) tcode = __le32_to_cpu(lynx->rcv_buffer[1]) >> 4 & 0xf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) ktime_get_real_ts64(&ts64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) timestamp = ts64.tv_nsec / NSEC_PER_USEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) lynx->rcv_buffer[0] = (__force __le32)timestamp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) if (length == PHY_PACKET_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) tcode_mask = 1 << TCODE_PHY_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) tcode_mask = 1 << tcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) spin_lock(&lynx->client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) list_for_each_entry(client, &lynx->client_list, link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (client->tcode_mask & tcode_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) packet_buffer_put(&client->buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) lynx->rcv_buffer, length + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) spin_unlock(&lynx->client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) bus_reset_irq_handler(struct pcilynx *lynx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) struct client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) struct timespec64 ts64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) u32 timestamp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) ktime_get_real_ts64(&ts64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) timestamp = ts64.tv_nsec / NSEC_PER_USEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) spin_lock(&lynx->client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) list_for_each_entry(client, &lynx->client_list, link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) packet_buffer_put(&client->buffer, ×tamp, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) spin_unlock(&lynx->client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) static irqreturn_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) irq_handler(int irq, void *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) struct pcilynx *lynx = device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) u32 pci_int_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) pci_int_status = reg_read(lynx, PCI_INT_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) if (pci_int_status == ~0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) /* Card was ejected. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) return IRQ_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if ((pci_int_status & PCI_INT_INT_PEND) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) /* Not our interrupt, bail out quickly. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return IRQ_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) if ((pci_int_status & PCI_INT_P1394_INT) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) u32 link_int_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) link_int_status = reg_read(lynx, LINK_INT_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) reg_write(lynx, LINK_INT_STATUS, link_int_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) if ((link_int_status & LINK_INT_PHY_BUSRESET) > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) bus_reset_irq_handler(lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) /* Clear the PCI_INT_STATUS register only after clearing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * LINK_INT_STATUS register; otherwise the PCI_INT_P1394 will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) * be set again immediately. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) reg_write(lynx, PCI_INT_STATUS, pci_int_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) if ((pci_int_status & PCI_INT_DMA0_HLT) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) packet_irq_handler(lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) remove_card(struct pci_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) struct pcilynx *lynx = pci_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) struct client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) mutex_lock(&card_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) list_del_init(&lynx->link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) misc_deregister(&lynx->misc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) mutex_unlock(&card_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) reg_write(lynx, PCI_INT_ENABLE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) free_irq(lynx->pci_device->irq, lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) spin_lock_irq(&lynx->client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) list_for_each_entry(client, &lynx->client_list, link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) wake_up_interruptible(&client->buffer.wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) spin_unlock_irq(&lynx->client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) lynx->rcv_pcl, lynx->rcv_pcl_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) pci_free_consistent(lynx->pci_device, PAGE_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) lynx->rcv_buffer, lynx->rcv_buffer_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) iounmap(lynx->registers);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) pci_disable_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) lynx_put(lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) #define RCV_BUFFER_SIZE (16 * 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) add_card(struct pci_dev *dev, const struct pci_device_id *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) struct pcilynx *lynx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) u32 p, end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) if (pci_set_dma_mask(dev, DMA_BIT_MASK(32))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) dev_err(&dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) "DMA address limits not supported for PCILynx hardware\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (pci_enable_device(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) dev_err(&dev->dev, "Failed to enable PCILynx hardware\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) pci_set_master(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) lynx = kzalloc(sizeof *lynx, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) if (lynx == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) dev_err(&dev->dev, "Failed to allocate control structure\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) goto fail_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) lynx->pci_device = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) pci_set_drvdata(dev, lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) spin_lock_init(&lynx->client_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) INIT_LIST_HEAD(&lynx->client_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) kref_init(&lynx->kref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) lynx->registers = ioremap(pci_resource_start(dev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) PCILYNX_MAX_REGISTER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) if (lynx->registers == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) dev_err(&dev->dev, "Failed to map registers\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) goto fail_deallocate_lynx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) lynx->rcv_start_pcl = pci_alloc_consistent(lynx->pci_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) sizeof(struct pcl), &lynx->rcv_start_pcl_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) lynx->rcv_pcl = pci_alloc_consistent(lynx->pci_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) sizeof(struct pcl), &lynx->rcv_pcl_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) lynx->rcv_buffer = pci_alloc_consistent(lynx->pci_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) RCV_BUFFER_SIZE, &lynx->rcv_buffer_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) if (lynx->rcv_start_pcl == NULL ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) lynx->rcv_pcl == NULL ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) lynx->rcv_buffer == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) dev_err(&dev->dev, "Failed to allocate receive buffer\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) goto fail_deallocate_buffers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) lynx->rcv_start_pcl->next = cpu_to_le32(lynx->rcv_pcl_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) lynx->rcv_pcl->next = cpu_to_le32(PCL_NEXT_INVALID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) lynx->rcv_pcl->async_error_next = cpu_to_le32(PCL_NEXT_INVALID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) lynx->rcv_pcl->buffer[0].control =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) cpu_to_le32(PCL_CMD_RCV | PCL_BIGENDIAN | 2044);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) lynx->rcv_pcl->buffer[0].pointer =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) cpu_to_le32(lynx->rcv_buffer_bus + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) p = lynx->rcv_buffer_bus + 2048;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) end = lynx->rcv_buffer_bus + RCV_BUFFER_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) for (i = 1; p < end; i++, p += 2048) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) lynx->rcv_pcl->buffer[i].control =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) cpu_to_le32(PCL_CMD_RCV | PCL_BIGENDIAN | 2048);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) lynx->rcv_pcl->buffer[i].pointer = cpu_to_le32(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) lynx->rcv_pcl->buffer[i - 1].control |= cpu_to_le32(PCL_LAST_BUFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) reg_set_bits(lynx, MISC_CONTROL, MISC_CONTROL_SWRESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) /* Fix buggy cards with autoboot pin not tied low: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) reg_write(lynx, DMA0_CHAN_CTRL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) reg_write(lynx, DMA_GLOBAL_REGISTER, 0x00 << 24);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) /* now, looking for PHY register set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if ((get_phy_reg(lynx, 2) & 0xe0) == 0xe0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) lynx->phyic.reg_1394a = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) PRINT(KERN_INFO, lynx->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) "found 1394a conform PHY (using extended register set)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) lynx->phyic.vendor = get_phy_vendorid(lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) lynx->phyic.product = get_phy_productid(lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) lynx->phyic.reg_1394a = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) PRINT(KERN_INFO, lynx->id, "found old 1394 PHY");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) /* Setup the general receive FIFO max size. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) reg_write(lynx, FIFO_SIZES, 255);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) reg_set_bits(lynx, PCI_INT_ENABLE, PCI_INT_DMA_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) reg_write(lynx, LINK_INT_ENABLE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) LINK_INT_PHY_TIME_OUT | LINK_INT_PHY_REG_RCVD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) LINK_INT_PHY_BUSRESET | LINK_INT_IT_STUCK |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) LINK_INT_AT_STUCK | LINK_INT_SNTRJ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) LINK_INT_TC_ERR | LINK_INT_GRF_OVER_FLOW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) LINK_INT_ITF_UNDER_FLOW | LINK_INT_ATF_UNDER_FLOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) /* Disable the L flag in self ID packets. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) set_phy_reg(lynx, 4, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) /* Put this baby into snoop mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) reg_set_bits(lynx, LINK_CONTROL, LINK_CONTROL_SNOOP_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) if (request_irq(dev->irq, irq_handler, IRQF_SHARED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) driver_name, lynx)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) dev_err(&dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) "Failed to allocate shared interrupt %d\n", dev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) goto fail_deallocate_buffers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) lynx->misc.parent = &dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) lynx->misc.minor = MISC_DYNAMIC_MINOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) lynx->misc.name = "nosy";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) lynx->misc.fops = &nosy_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) mutex_lock(&card_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) ret = misc_register(&lynx->misc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) dev_err(&dev->dev, "Failed to register misc char device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) mutex_unlock(&card_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) goto fail_free_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) list_add_tail(&lynx->link, &card_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) mutex_unlock(&card_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) dev_info(&dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) "Initialized PCILynx IEEE1394 card, irq=%d\n", dev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) fail_free_irq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) reg_write(lynx, PCI_INT_ENABLE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) free_irq(lynx->pci_device->irq, lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) fail_deallocate_buffers:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (lynx->rcv_start_pcl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) if (lynx->rcv_pcl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) lynx->rcv_pcl, lynx->rcv_pcl_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) if (lynx->rcv_buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) pci_free_consistent(lynx->pci_device, PAGE_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) lynx->rcv_buffer, lynx->rcv_buffer_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) iounmap(lynx->registers);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) fail_deallocate_lynx:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) kfree(lynx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) fail_disable:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) pci_disable_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) static struct pci_device_id pci_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) .vendor = PCI_VENDOR_ID_TI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) .device = PCI_DEVICE_ID_TI_PCILYNX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) .subvendor = PCI_ANY_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) .subdevice = PCI_ANY_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) { } /* Terminating entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) MODULE_DEVICE_TABLE(pci, pci_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) static struct pci_driver lynx_pci_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) .name = driver_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) .id_table = pci_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) .probe = add_card,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) .remove = remove_card,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) module_pci_driver(lynx_pci_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) MODULE_AUTHOR("Kristian Hoegsberg");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) MODULE_DESCRIPTION("Snoop mode driver for TI pcilynx 1394 controllers");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags