^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) * Greybus "AP" USB driver for "ES2" controller chips
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2014-2015 Google Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright 2014-2015 Linaro Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/sizes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kfifo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/greybus.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "arpc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "greybus_trace.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* Default timeout for USB vendor requests. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define ES2_USB_CTRL_TIMEOUT 500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /* Default timeout for ARPC CPort requests */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define ES2_ARPC_CPORT_TIMEOUT 500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /* Fixed CPort numbers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define ES2_CPORT_CDSI0 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define ES2_CPORT_CDSI1 17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /* Memory sizes for the buffers sent to/from the ES2 controller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define ES2_GBUF_MSG_SIZE_MAX 2048
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /* Memory sizes for the ARPC buffers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define ARPC_OUT_SIZE_MAX U16_MAX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define ARPC_IN_SIZE_MAX 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static const struct usb_device_id id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) { USB_DEVICE(0x18d1, 0x1eaf) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) MODULE_DEVICE_TABLE(usb, id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define APB1_LOG_SIZE SZ_16K
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * Number of CPort IN urbs in flight at any point in time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * Adjust if we are having stalls in the USB buffer due to not enough urbs in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * flight.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define NUM_CPORT_IN_URB 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /* Number of CPort OUT urbs in flight at any point in time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * Adjust if we get messages saying we are out of urbs in the system log.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define NUM_CPORT_OUT_URB 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Number of ARPC in urbs in flight at any point in time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define NUM_ARPC_IN_URB 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * @endpoint: bulk in endpoint for CPort data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * @urb: array of urbs for the CPort in messages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * @buffer: array of buffers for the @cport_in_urb urbs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct es2_cport_in {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) __u8 endpoint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct urb *urb[NUM_CPORT_IN_URB];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u8 *buffer[NUM_CPORT_IN_URB];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * es2_ap_dev - ES2 USB Bridge to AP structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * @usb_dev: pointer to the USB device we are.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * @usb_intf: pointer to the USB interface we are bound to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * @hd: pointer to our gb_host_device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * @cport_in: endpoint, urbs and buffer for cport in messages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * @cport_out_endpoint: endpoint for for cport out messages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * @cport_out_urb: array of urbs for the CPort out messages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * @cport_out_urb_busy: array of flags to see if the @cport_out_urb is busy or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * not.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * @cport_out_urb_cancelled: array of flags indicating whether the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * corresponding @cport_out_urb is being cancelled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * @cport_out_urb_lock: locks the @cport_out_urb_busy "list"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * @apb_log_task: task pointer for logging thread
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * @apb_log_dentry: file system entry for the log file interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * @apb_log_enable_dentry: file system entry for enabling logging
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * @apb_log_fifo: kernel FIFO to carry logged data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * @arpc_urb: array of urbs for the ARPC in messages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * @arpc_buffer: array of buffers for the @arpc_urb urbs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * @arpc_endpoint_in: bulk in endpoint for APBridgeA RPC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * @arpc_id_cycle: gives an unique id to ARPC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * @arpc_lock: locks ARPC list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * @arpcs: list of in progress ARPCs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct es2_ap_dev {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct usb_device *usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct usb_interface *usb_intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct gb_host_device *hd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct es2_cport_in cport_in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) __u8 cport_out_endpoint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct urb *cport_out_urb[NUM_CPORT_OUT_URB];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) bool cport_out_urb_busy[NUM_CPORT_OUT_URB];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) bool cport_out_urb_cancelled[NUM_CPORT_OUT_URB];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) spinlock_t cport_out_urb_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) bool cdsi1_in_use;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct task_struct *apb_log_task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct dentry *apb_log_dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct dentry *apb_log_enable_dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) DECLARE_KFIFO(apb_log_fifo, char, APB1_LOG_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) __u8 arpc_endpoint_in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct urb *arpc_urb[NUM_ARPC_IN_URB];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) u8 *arpc_buffer[NUM_ARPC_IN_URB];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int arpc_id_cycle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) spinlock_t arpc_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct list_head arpcs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct arpc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct arpc_request_message *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct arpc_response_message *resp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct completion response_received;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) bool active;
^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 inline struct es2_ap_dev *hd_to_es2(struct gb_host_device *hd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return (struct es2_ap_dev *)&hd->hd_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static void cport_out_callback(struct urb *urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static void usb_log_enable(struct es2_ap_dev *es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static void usb_log_disable(struct es2_ap_dev *es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static int arpc_sync(struct es2_ap_dev *es2, u8 type, void *payload,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) size_t size, int *result, unsigned int timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) static int output_sync(struct es2_ap_dev *es2, void *req, u16 size, u8 cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct usb_device *udev = es2->usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) u8 *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) data = kmemdup(req, size, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) USB_DIR_OUT | USB_TYPE_VENDOR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) USB_RECIP_INTERFACE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 0, 0, data, size, ES2_USB_CTRL_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) dev_err(&udev->dev, "%s: return error %d\n", __func__, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) kfree(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return retval;
^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) static void ap_urb_complete(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct usb_ctrlrequest *dr = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) kfree(dr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) usb_free_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static int output_async(struct es2_ap_dev *es2, void *req, u16 size, u8 cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct usb_device *udev = es2->usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct usb_ctrlrequest *dr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) u8 *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) urb = usb_alloc_urb(0, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (!urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) dr = kmalloc(sizeof(*dr) + size, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (!dr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) usb_free_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) buf = (u8 *)dr + sizeof(*dr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) memcpy(buf, req, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) dr->bRequest = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) dr->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) dr->wValue = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) dr->wIndex = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) dr->wLength = cpu_to_le16(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) usb_fill_control_urb(urb, udev, usb_sndctrlpipe(udev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) (unsigned char *)dr, buf, size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) ap_urb_complete, dr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) retval = usb_submit_urb(urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) usb_free_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) kfree(dr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) static int output(struct gb_host_device *hd, void *req, u16 size, u8 cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) bool async)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (async)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return output_async(es2, req, size, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return output_sync(es2, req, size, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static int es2_cport_in_enable(struct es2_ap_dev *es2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct es2_cport_in *cport_in)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) for (i = 0; i < NUM_CPORT_IN_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) urb = cport_in->urb[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) ret = usb_submit_urb(urb, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) dev_err(&es2->usb_dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) "failed to submit in-urb: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) goto err_kill_urbs;
^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) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) err_kill_urbs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) for (--i; i >= 0; --i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) urb = cport_in->urb[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) usb_kill_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static void es2_cport_in_disable(struct es2_ap_dev *es2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) struct es2_cport_in *cport_in)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) for (i = 0; i < NUM_CPORT_IN_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) urb = cport_in->urb[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) usb_kill_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) static int es2_arpc_in_enable(struct es2_ap_dev *es2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) for (i = 0; i < NUM_ARPC_IN_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) urb = es2->arpc_urb[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ret = usb_submit_urb(urb, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) dev_err(&es2->usb_dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) "failed to submit arpc in-urb: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) goto err_kill_urbs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) err_kill_urbs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) for (--i; i >= 0; --i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) urb = es2->arpc_urb[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) usb_kill_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) static void es2_arpc_in_disable(struct es2_ap_dev *es2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) for (i = 0; i < NUM_ARPC_IN_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) urb = es2->arpc_urb[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) usb_kill_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) static struct urb *next_free_urb(struct es2_ap_dev *es2, gfp_t gfp_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) struct urb *urb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) spin_lock_irqsave(&es2->cport_out_urb_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) /* Look in our pool of allocated urbs first, as that's the "fastest" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) for (i = 0; i < NUM_CPORT_OUT_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (!es2->cport_out_urb_busy[i] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) !es2->cport_out_urb_cancelled[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) es2->cport_out_urb_busy[i] = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) urb = es2->cport_out_urb[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) spin_unlock_irqrestore(&es2->cport_out_urb_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * Crap, pool is empty, complain to the syslog and go allocate one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) * dynamically as we have to succeed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) dev_dbg(&es2->usb_dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) "No free CPort OUT urbs, having to dynamically allocate one!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return usb_alloc_urb(0, gfp_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) static void free_urb(struct es2_ap_dev *es2, struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) * See if this was an urb in our pool, if so mark it "free", otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) * we need to free it ourselves.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) spin_lock_irqsave(&es2->cport_out_urb_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) for (i = 0; i < NUM_CPORT_OUT_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (urb == es2->cport_out_urb[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) es2->cport_out_urb_busy[i] = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) urb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) spin_unlock_irqrestore(&es2->cport_out_urb_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) /* If urb is not NULL, then we need to free this urb */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) usb_free_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) * We (ab)use the operation-message header pad bytes to transfer the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) * cport id in order to minimise overhead.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) gb_message_cport_pack(struct gb_operation_msg_hdr *header, u16 cport_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) header->pad[0] = cport_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) /* Clear the pad bytes used for the CPort id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) static void gb_message_cport_clear(struct gb_operation_msg_hdr *header)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) header->pad[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) /* Extract the CPort id packed into the header, and clear it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) static u16 gb_message_cport_unpack(struct gb_operation_msg_hdr *header)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) u16 cport_id = header->pad[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) gb_message_cport_clear(header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return cport_id;
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) * Returns zero if the message was successfully queued, or a negative errno
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) static int message_send(struct gb_host_device *hd, u16 cport_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) struct gb_message *message, gfp_t gfp_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) struct usb_device *udev = es2->usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) size_t buffer_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) unsigned long flags;
^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) * The data actually transferred will include an indication
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * of where the data should be sent. Do one last check of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) * the target CPort id before filling it in.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (!cport_id_valid(hd, cport_id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) dev_err(&udev->dev, "invalid cport %u\n", cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) /* Find a free urb */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) urb = next_free_urb(es2, gfp_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (!urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) spin_lock_irqsave(&es2->cport_out_urb_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) message->hcpriv = urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) spin_unlock_irqrestore(&es2->cport_out_urb_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) /* Pack the cport id into the message header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) gb_message_cport_pack(message->header, cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) buffer_size = sizeof(*message->header) + message->payload_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) usb_fill_bulk_urb(urb, udev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) usb_sndbulkpipe(udev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) es2->cport_out_endpoint),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) message->buffer, buffer_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) cport_out_callback, message);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) urb->transfer_flags |= URB_ZERO_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) trace_gb_message_submit(message);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) retval = usb_submit_urb(urb, gfp_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) dev_err(&udev->dev, "failed to submit out-urb: %d\n", retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) spin_lock_irqsave(&es2->cport_out_urb_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) message->hcpriv = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) spin_unlock_irqrestore(&es2->cport_out_urb_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) free_urb(es2, urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) gb_message_cport_clear(message->header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) * Can not be called in atomic context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) static void message_cancel(struct gb_message *message)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) struct gb_host_device *hd = message->operation->connection->hd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) might_sleep();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) spin_lock_irq(&es2->cport_out_urb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) urb = message->hcpriv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) /* Prevent dynamically allocated urb from being deallocated. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) usb_get_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) /* Prevent pre-allocated urb from being reused. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) for (i = 0; i < NUM_CPORT_OUT_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) if (urb == es2->cport_out_urb[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) es2->cport_out_urb_cancelled[i] = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) spin_unlock_irq(&es2->cport_out_urb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) usb_kill_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) if (i < NUM_CPORT_OUT_URB) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) spin_lock_irq(&es2->cport_out_urb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) es2->cport_out_urb_cancelled[i] = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) spin_unlock_irq(&es2->cport_out_urb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) usb_free_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) static int es2_cport_allocate(struct gb_host_device *hd, int cport_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) unsigned long flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) struct ida *id_map = &hd->cport_id_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) int ida_start, ida_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) switch (cport_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) case ES2_CPORT_CDSI0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) case ES2_CPORT_CDSI1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) dev_err(&hd->dev, "cport %d not available\n", cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) if (flags & GB_CONNECTION_FLAG_OFFLOADED &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) flags & GB_CONNECTION_FLAG_CDSI1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (es2->cdsi1_in_use) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) dev_err(&hd->dev, "CDSI1 already in use\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) es2->cdsi1_in_use = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return ES2_CPORT_CDSI1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) if (cport_id < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) ida_start = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) ida_end = hd->num_cports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) } else if (cport_id < hd->num_cports) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) ida_start = cport_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) ida_end = cport_id + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) dev_err(&hd->dev, "cport %d not available\n", cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) return ida_simple_get(id_map, ida_start, ida_end, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) static void es2_cport_release(struct gb_host_device *hd, u16 cport_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) switch (cport_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) case ES2_CPORT_CDSI1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) es2->cdsi1_in_use = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) ida_simple_remove(&hd->cport_id_map, cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) static int cport_enable(struct gb_host_device *hd, u16 cport_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) unsigned long flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) struct usb_device *udev = es2->usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) struct gb_apb_request_cport_flags *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) u32 connection_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) req = kzalloc(sizeof(*req), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (!req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) connection_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) if (flags & GB_CONNECTION_FLAG_CONTROL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) connection_flags |= GB_APB_CPORT_FLAG_CONTROL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) if (flags & GB_CONNECTION_FLAG_HIGH_PRIO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) connection_flags |= GB_APB_CPORT_FLAG_HIGH_PRIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) req->flags = cpu_to_le32(connection_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) dev_dbg(&hd->dev, "%s - cport = %u, flags = %02x\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) cport_id, connection_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) GB_APB_REQUEST_CPORT_FLAGS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) USB_DIR_OUT | USB_TYPE_VENDOR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) USB_RECIP_INTERFACE, cport_id, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) req, sizeof(*req), ES2_USB_CTRL_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) if (ret != sizeof(*req)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) dev_err(&udev->dev, "failed to set cport flags for port %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) if (ret >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) kfree(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) static int es2_cport_connected(struct gb_host_device *hd, u16 cport_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) struct device *dev = &es2->usb_dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) struct arpc_cport_connected_req req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) req.cport_id = cpu_to_le16(cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) ret = arpc_sync(es2, ARPC_TYPE_CPORT_CONNECTED, &req, sizeof(req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) NULL, ES2_ARPC_CPORT_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) dev_err(dev, "failed to set connected state for cport %u: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) cport_id, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) return ret;
^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) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) static int es2_cport_flush(struct gb_host_device *hd, u16 cport_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) struct device *dev = &es2->usb_dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) struct arpc_cport_flush_req req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) req.cport_id = cpu_to_le16(cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) ret = arpc_sync(es2, ARPC_TYPE_CPORT_FLUSH, &req, sizeof(req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) NULL, ES2_ARPC_CPORT_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) dev_err(dev, "failed to flush cport %u: %d\n", cport_id, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) static int es2_cport_shutdown(struct gb_host_device *hd, u16 cport_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) u8 phase, unsigned int timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) struct device *dev = &es2->usb_dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) struct arpc_cport_shutdown_req req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) if (timeout > U16_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) req.cport_id = cpu_to_le16(cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) req.timeout = cpu_to_le16(timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) req.phase = phase;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) ret = arpc_sync(es2, ARPC_TYPE_CPORT_SHUTDOWN, &req, sizeof(req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) &result, ES2_ARPC_CPORT_TIMEOUT + timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) dev_err(dev, "failed to send shutdown over cport %u: %d (%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) cport_id, ret, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) static int es2_cport_quiesce(struct gb_host_device *hd, u16 cport_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) size_t peer_space, unsigned int timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) struct device *dev = &es2->usb_dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) struct arpc_cport_quiesce_req req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) if (peer_space > U16_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) if (timeout > U16_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) req.cport_id = cpu_to_le16(cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) req.peer_space = cpu_to_le16(peer_space);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) req.timeout = cpu_to_le16(timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) ret = arpc_sync(es2, ARPC_TYPE_CPORT_QUIESCE, &req, sizeof(req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) &result, ES2_ARPC_CPORT_TIMEOUT + timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) dev_err(dev, "failed to quiesce cport %u: %d (%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) cport_id, ret, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) static int es2_cport_clear(struct gb_host_device *hd, u16 cport_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) struct device *dev = &es2->usb_dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) struct arpc_cport_clear_req req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) req.cport_id = cpu_to_le16(cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) ret = arpc_sync(es2, ARPC_TYPE_CPORT_CLEAR, &req, sizeof(req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) NULL, ES2_ARPC_CPORT_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) dev_err(dev, "failed to clear cport %u: %d\n", cport_id, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) static int latency_tag_enable(struct gb_host_device *hd, u16 cport_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) struct usb_device *udev = es2->usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) GB_APB_REQUEST_LATENCY_TAG_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) USB_DIR_OUT | USB_TYPE_VENDOR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) USB_RECIP_INTERFACE, cport_id, 0, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) 0, ES2_USB_CTRL_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) dev_err(&udev->dev, "Cannot enable latency tag for cport %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) static int latency_tag_disable(struct gb_host_device *hd, u16 cport_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) struct usb_device *udev = es2->usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) GB_APB_REQUEST_LATENCY_TAG_DIS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) USB_DIR_OUT | USB_TYPE_VENDOR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) USB_RECIP_INTERFACE, cport_id, 0, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) 0, ES2_USB_CTRL_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) dev_err(&udev->dev, "Cannot disable latency tag for cport %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) static struct gb_hd_driver es2_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) .hd_priv_size = sizeof(struct es2_ap_dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) .message_send = message_send,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) .message_cancel = message_cancel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) .cport_allocate = es2_cport_allocate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) .cport_release = es2_cport_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) .cport_enable = cport_enable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) .cport_connected = es2_cport_connected,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) .cport_flush = es2_cport_flush,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) .cport_shutdown = es2_cport_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) .cport_quiesce = es2_cport_quiesce,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) .cport_clear = es2_cport_clear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) .latency_tag_enable = latency_tag_enable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) .latency_tag_disable = latency_tag_disable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) .output = output,
^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) /* Common function to report consistent warnings based on URB status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) static int check_urb_status(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) struct device *dev = &urb->dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) int status = urb->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) case -EOVERFLOW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) dev_err(dev, "%s: overflow actual length is %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) __func__, urb->actual_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) case -ECONNRESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) case -ENOENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) case -ESHUTDOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) case -EILSEQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) case -EPROTO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) /* device is gone, stop sending */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) dev_err(dev, "%s: unknown status %d\n", __func__, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) static void es2_destroy(struct es2_ap_dev *es2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) struct usb_device *udev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) debugfs_remove(es2->apb_log_enable_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) usb_log_disable(es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) /* Tear down everything! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) for (i = 0; i < NUM_CPORT_OUT_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) urb = es2->cport_out_urb[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) usb_kill_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) usb_free_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) es2->cport_out_urb[i] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) es2->cport_out_urb_busy[i] = false; /* just to be anal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) for (i = 0; i < NUM_ARPC_IN_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) usb_free_urb(es2->arpc_urb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) kfree(es2->arpc_buffer[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) es2->arpc_buffer[i] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) for (i = 0; i < NUM_CPORT_IN_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) usb_free_urb(es2->cport_in.urb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) kfree(es2->cport_in.buffer[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) es2->cport_in.buffer[i] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) /* release reserved CDSI0 and CDSI1 cports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) gb_hd_cport_release_reserved(es2->hd, ES2_CPORT_CDSI1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) gb_hd_cport_release_reserved(es2->hd, ES2_CPORT_CDSI0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) udev = es2->usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) gb_hd_put(es2->hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) usb_put_dev(udev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) static void cport_in_callback(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) struct gb_host_device *hd = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) struct device *dev = &urb->dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) struct gb_operation_msg_hdr *header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) int status = check_urb_status(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) u16 cport_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) if (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) if ((status == -EAGAIN) || (status == -EPROTO))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) /* The urb is being unlinked */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) if (status == -ENOENT || status == -ESHUTDOWN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) dev_err(dev, "urb cport in error %d (dropped)\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) if (urb->actual_length < sizeof(*header)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) dev_err(dev, "short message received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) /* Extract the CPort id, which is packed in the message header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) header = urb->transfer_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) cport_id = gb_message_cport_unpack(header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) if (cport_id_valid(hd, cport_id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) greybus_data_rcvd(hd, cport_id, urb->transfer_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) urb->actual_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) dev_err(dev, "invalid cport id %u received\n", cport_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) /* put our urb back in the request pool */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) retval = usb_submit_urb(urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) dev_err(dev, "failed to resubmit in-urb: %d\n", retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) static void cport_out_callback(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) struct gb_message *message = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) struct gb_host_device *hd = message->operation->connection->hd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) struct es2_ap_dev *es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) int status = check_urb_status(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) gb_message_cport_clear(message->header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) spin_lock_irqsave(&es2->cport_out_urb_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) message->hcpriv = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) spin_unlock_irqrestore(&es2->cport_out_urb_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) * Tell the submitter that the message send (attempt) is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) * complete, and report the status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) greybus_message_sent(hd, message, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) free_urb(es2, urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) static struct arpc *arpc_alloc(void *payload, u16 size, u8 type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) struct arpc *rpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) if (size + sizeof(*rpc->req) > ARPC_OUT_SIZE_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) rpc = kzalloc(sizeof(*rpc), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) if (!rpc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) INIT_LIST_HEAD(&rpc->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) rpc->req = kzalloc(sizeof(*rpc->req) + size, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) if (!rpc->req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) goto err_free_rpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) rpc->resp = kzalloc(sizeof(*rpc->resp), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) if (!rpc->resp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) goto err_free_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) rpc->req->type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) rpc->req->size = cpu_to_le16(sizeof(*rpc->req) + size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) memcpy(rpc->req->data, payload, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) init_completion(&rpc->response_received);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) return rpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) err_free_req:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) kfree(rpc->req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) err_free_rpc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) kfree(rpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) static void arpc_free(struct arpc *rpc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) kfree(rpc->req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) kfree(rpc->resp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) kfree(rpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) static struct arpc *arpc_find(struct es2_ap_dev *es2, __le16 id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) struct arpc *rpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) list_for_each_entry(rpc, &es2->arpcs, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) if (rpc->req->id == id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) return rpc;
^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) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) static void arpc_add(struct es2_ap_dev *es2, struct arpc *rpc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) rpc->active = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) rpc->req->id = cpu_to_le16(es2->arpc_id_cycle++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) list_add_tail(&rpc->list, &es2->arpcs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) static void arpc_del(struct es2_ap_dev *es2, struct arpc *rpc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) if (rpc->active) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) rpc->active = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) list_del(&rpc->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) static int arpc_send(struct es2_ap_dev *es2, struct arpc *rpc, int timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) struct usb_device *udev = es2->usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) GB_APB_REQUEST_ARPC_RUN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) USB_DIR_OUT | USB_TYPE_VENDOR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) USB_RECIP_INTERFACE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) rpc->req, le16_to_cpu(rpc->req->size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) ES2_USB_CTRL_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) if (retval != le16_to_cpu(rpc->req->size)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) dev_err(&udev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) "failed to send ARPC request %d: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) rpc->req->type, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) if (retval > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) retval = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) return retval;
^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) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) static int arpc_sync(struct es2_ap_dev *es2, u8 type, void *payload,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) size_t size, int *result, unsigned int timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) struct arpc *rpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) if (result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) *result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) rpc = arpc_alloc(payload, size, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) if (!rpc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) spin_lock_irqsave(&es2->arpc_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) arpc_add(es2, rpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) spin_unlock_irqrestore(&es2->arpc_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) retval = arpc_send(es2, rpc, timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) goto out_arpc_del;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) retval = wait_for_completion_interruptible_timeout(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) &rpc->response_received,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) msecs_to_jiffies(timeout));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) if (retval <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) if (!retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) retval = -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) goto out_arpc_del;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) if (rpc->resp->result) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) retval = -EREMOTEIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) if (result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) *result = rpc->resp->result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) out_arpc_del:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) spin_lock_irqsave(&es2->arpc_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) arpc_del(es2, rpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) spin_unlock_irqrestore(&es2->arpc_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) arpc_free(rpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) if (retval < 0 && retval != -EREMOTEIO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) dev_err(&es2->usb_dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) "failed to execute ARPC: %d\n", retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) static void arpc_in_callback(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) struct es2_ap_dev *es2 = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) struct device *dev = &urb->dev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) int status = check_urb_status(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) struct arpc *rpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) struct arpc_response_message *resp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) if (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) if ((status == -EAGAIN) || (status == -EPROTO))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) /* The urb is being unlinked */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) if (status == -ENOENT || status == -ESHUTDOWN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) dev_err(dev, "arpc in-urb error %d (dropped)\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) if (urb->actual_length < sizeof(*resp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) dev_err(dev, "short aprc response received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) resp = urb->transfer_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) spin_lock_irqsave(&es2->arpc_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) rpc = arpc_find(es2, resp->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) if (!rpc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) dev_err(dev, "invalid arpc response id received: %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) le16_to_cpu(resp->id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) spin_unlock_irqrestore(&es2->arpc_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) arpc_del(es2, rpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) memcpy(rpc->resp, resp, sizeof(*resp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) complete(&rpc->response_received);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) spin_unlock_irqrestore(&es2->arpc_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) /* put our urb back in the request pool */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) retval = usb_submit_urb(urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) dev_err(dev, "failed to resubmit arpc in-urb: %d\n", retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) #define APB1_LOG_MSG_SIZE 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) static void apb_log_get(struct es2_ap_dev *es2, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) retval = usb_control_msg(es2->usb_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) usb_rcvctrlpipe(es2->usb_dev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) GB_APB_REQUEST_LOG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) USB_DIR_IN | USB_TYPE_VENDOR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) USB_RECIP_INTERFACE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) 0x00, 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) APB1_LOG_MSG_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) ES2_USB_CTRL_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) if (retval > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) kfifo_in(&es2->apb_log_fifo, buf, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) } while (retval > 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) static int apb_log_poll(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) struct es2_ap_dev *es2 = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) char *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) buf = kmalloc(APB1_LOG_MSG_SIZE, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) while (!kthread_should_stop()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) msleep(1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) apb_log_get(es2, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) kfree(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) static ssize_t apb_log_read(struct file *f, char __user *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) struct es2_ap_dev *es2 = file_inode(f)->i_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) size_t copied;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) char *tmp_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) if (count > APB1_LOG_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) count = APB1_LOG_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) tmp_buf = kmalloc(count, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) if (!tmp_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) copied = kfifo_out(&es2->apb_log_fifo, tmp_buf, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) ret = simple_read_from_buffer(buf, count, ppos, tmp_buf, copied);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) kfree(tmp_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) static const struct file_operations apb_log_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) .read = apb_log_read,
^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 void usb_log_enable(struct es2_ap_dev *es2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) if (!IS_ERR_OR_NULL(es2->apb_log_task))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) /* get log from APB1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) es2->apb_log_task = kthread_run(apb_log_poll, es2, "apb_log");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) if (IS_ERR(es2->apb_log_task))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) /* XXX We will need to rename this per APB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) es2->apb_log_dentry = debugfs_create_file("apb_log", 0444,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) gb_debugfs_get(), es2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) &apb_log_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) static void usb_log_disable(struct es2_ap_dev *es2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) if (IS_ERR_OR_NULL(es2->apb_log_task))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) debugfs_remove(es2->apb_log_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) es2->apb_log_dentry = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) kthread_stop(es2->apb_log_task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) es2->apb_log_task = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) static ssize_t apb_log_enable_read(struct file *f, char __user *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) struct es2_ap_dev *es2 = file_inode(f)->i_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) int enable = !IS_ERR_OR_NULL(es2->apb_log_task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) char tmp_buf[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) sprintf(tmp_buf, "%d\n", enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) return simple_read_from_buffer(buf, count, ppos, tmp_buf, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) static ssize_t apb_log_enable_write(struct file *f, const char __user *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) int enable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) ssize_t retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) struct es2_ap_dev *es2 = file_inode(f)->i_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) retval = kstrtoint_from_user(buf, count, 10, &enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) if (enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) usb_log_enable(es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) usb_log_disable(es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) static const struct file_operations apb_log_enable_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) .read = apb_log_enable_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) .write = apb_log_enable_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) static int apb_get_cport_count(struct usb_device *udev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) __le16 *cport_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) cport_count = kzalloc(sizeof(*cport_count), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) if (!cport_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) GB_APB_REQUEST_CPORT_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) USB_DIR_IN | USB_TYPE_VENDOR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) USB_RECIP_INTERFACE, 0, 0, cport_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) sizeof(*cport_count), ES2_USB_CTRL_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) if (retval != sizeof(*cport_count)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) dev_err(&udev->dev, "Cannot retrieve CPort count: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) if (retval >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) retval = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) retval = le16_to_cpu(*cport_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) /* We need to fit a CPort ID in one byte of a message header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) if (retval > U8_MAX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) retval = U8_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) dev_warn(&udev->dev, "Limiting number of CPorts to U8_MAX\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) kfree(cport_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) * The ES2 USB Bridge device has 15 endpoints
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) * 1 Control - usual USB stuff + AP -> APBridgeA messages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) * 7 Bulk IN - CPort data in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) * 7 Bulk OUT - CPort data out
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) static int ap_probe(struct usb_interface *interface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) const struct usb_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) struct es2_ap_dev *es2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) struct gb_host_device *hd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) struct usb_device *udev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) struct usb_host_interface *iface_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) struct usb_endpoint_descriptor *endpoint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) __u8 ep_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) int num_cports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) bool bulk_out_found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) bool bulk_in_found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) bool arpc_in_found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) udev = usb_get_dev(interface_to_usbdev(interface));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) num_cports = apb_get_cport_count(udev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) if (num_cports < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) usb_put_dev(udev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) dev_err(&udev->dev, "Cannot retrieve CPort count: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) num_cports);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) return num_cports;
^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) hd = gb_hd_create(&es2_driver, &udev->dev, ES2_GBUF_MSG_SIZE_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) num_cports);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) if (IS_ERR(hd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) usb_put_dev(udev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) return PTR_ERR(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) es2 = hd_to_es2(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) es2->hd = hd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) es2->usb_intf = interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) es2->usb_dev = udev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) spin_lock_init(&es2->cport_out_urb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) INIT_KFIFO(es2->apb_log_fifo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) usb_set_intfdata(interface, es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) * Reserve the CDSI0 and CDSI1 CPorts so they won't be allocated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) * dynamically.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) retval = gb_hd_cport_reserve(hd, ES2_CPORT_CDSI0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) retval = gb_hd_cport_reserve(hd, ES2_CPORT_CDSI1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) /* find all bulk endpoints */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) iface_desc = interface->cur_altsetting;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) endpoint = &iface_desc->endpoint[i].desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) ep_addr = endpoint->bEndpointAddress;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) if (usb_endpoint_is_bulk_in(endpoint)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) if (!bulk_in_found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) es2->cport_in.endpoint = ep_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) bulk_in_found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) } else if (!arpc_in_found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) es2->arpc_endpoint_in = ep_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) arpc_in_found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) dev_warn(&udev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) "Unused bulk IN endpoint found: 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) ep_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) if (usb_endpoint_is_bulk_out(endpoint)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) if (!bulk_out_found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) es2->cport_out_endpoint = ep_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) bulk_out_found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) dev_warn(&udev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) "Unused bulk OUT endpoint found: 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) ep_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) dev_warn(&udev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) "Unknown endpoint type found, address 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) ep_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) if (!bulk_in_found || !arpc_in_found || !bulk_out_found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) dev_err(&udev->dev, "Not enough endpoints found in device, aborting!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) retval = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) /* Allocate buffers for our cport in messages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) for (i = 0; i < NUM_CPORT_IN_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) u8 *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) urb = usb_alloc_urb(0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) if (!urb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) retval = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) es2->cport_in.urb[i] = urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) buffer = kmalloc(ES2_GBUF_MSG_SIZE_MAX, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) if (!buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) retval = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) usb_fill_bulk_urb(urb, udev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) usb_rcvbulkpipe(udev, es2->cport_in.endpoint),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) buffer, ES2_GBUF_MSG_SIZE_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) cport_in_callback, hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) es2->cport_in.buffer[i] = buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) /* Allocate buffers for ARPC in messages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) for (i = 0; i < NUM_ARPC_IN_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) u8 *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) urb = usb_alloc_urb(0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) if (!urb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) retval = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) es2->arpc_urb[i] = urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) buffer = kmalloc(ARPC_IN_SIZE_MAX, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) if (!buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) retval = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) usb_fill_bulk_urb(urb, udev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) usb_rcvbulkpipe(udev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) es2->arpc_endpoint_in),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) buffer, ARPC_IN_SIZE_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) arpc_in_callback, es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) es2->arpc_buffer[i] = buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) /* Allocate urbs for our CPort OUT messages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) for (i = 0; i < NUM_CPORT_OUT_URB; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) urb = usb_alloc_urb(0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) if (!urb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) retval = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) es2->cport_out_urb[i] = urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) es2->cport_out_urb_busy[i] = false; /* just to be anal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) /* XXX We will need to rename this per APB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) es2->apb_log_enable_dentry = debugfs_create_file("apb_log_enable",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) gb_debugfs_get(), es2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) &apb_log_enable_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) INIT_LIST_HEAD(&es2->arpcs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) spin_lock_init(&es2->arpc_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) retval = es2_arpc_in_enable(es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) retval = gb_hd_add(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) goto err_disable_arpc_in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) retval = es2_cport_in_enable(es2, &es2->cport_in);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) goto err_hd_del;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) err_hd_del:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) gb_hd_del(hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) err_disable_arpc_in:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) es2_arpc_in_disable(es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) es2_destroy(es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) static void ap_disconnect(struct usb_interface *interface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) struct es2_ap_dev *es2 = usb_get_intfdata(interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) gb_hd_del(es2->hd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) es2_cport_in_disable(es2, &es2->cport_in);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) es2_arpc_in_disable(es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) es2_destroy(es2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) static struct usb_driver es2_ap_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) .name = "es2_ap_driver",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) .probe = ap_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) .disconnect = ap_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) .id_table = id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) .soft_unbind = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) module_usb_driver(es2_ap_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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