/* * Copyright (C) 2011 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . */ #ifndef __NET_HCI_H #define __NET_HCI_H #include #include struct nfc_hci_dev; struct nfc_hci_ops { int (*open) (struct nfc_hci_dev *hdev); void (*close) (struct nfc_hci_dev *hdev); int (*load_session) (struct nfc_hci_dev *hdev); int (*hci_ready) (struct nfc_hci_dev *hdev); /* * xmit must always send the complete buffer before * returning. Returned result must be 0 for success * or negative for failure. */ int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb); int (*start_poll) (struct nfc_hci_dev *hdev, u32 im_protocols, u32 tm_protocols); void (*stop_poll) (struct nfc_hci_dev *hdev); int (*dep_link_up)(struct nfc_hci_dev *hdev, struct nfc_target *target, u8 comm_mode, u8 *gb, size_t gb_len); int (*dep_link_down)(struct nfc_hci_dev *hdev); int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate, struct nfc_target *target); int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate, struct nfc_target *target); int (*im_transceive) (struct nfc_hci_dev *hdev, struct nfc_target *target, struct sk_buff *skb, data_exchange_cb_t cb, void *cb_context); int (*tm_send)(struct nfc_hci_dev *hdev, struct sk_buff *skb); int (*check_presence)(struct nfc_hci_dev *hdev, struct nfc_target *target); int (*event_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 event, struct sk_buff *skb); void (*cmd_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd, struct sk_buff *skb); int (*fw_download)(struct nfc_hci_dev *hdev, const char *firmware_name); int (*discover_se)(struct nfc_hci_dev *dev); int (*enable_se)(struct nfc_hci_dev *dev, u32 se_idx); int (*disable_se)(struct nfc_hci_dev *dev, u32 se_idx); int (*se_io)(struct nfc_hci_dev *dev, u32 se_idx, u8 *apdu, size_t apdu_length, se_io_cb_t cb, void *cb_context); }; /* Pipes */ #define NFC_HCI_DO_NOT_CREATE_PIPE 0x81 #define NFC_HCI_INVALID_PIPE 0x80 #define NFC_HCI_INVALID_GATE 0xFF #define NFC_HCI_INVALID_HOST 0x80 #define NFC_HCI_LINK_MGMT_PIPE 0x00 #define NFC_HCI_ADMIN_PIPE 0x01 struct nfc_hci_gate { u8 gate; u8 pipe; }; struct nfc_hci_pipe { u8 gate; u8 dest_host; }; #define NFC_HCI_MAX_CUSTOM_GATES 50 /* * According to specification 102 622 chapter 4.4 Pipes, * the pipe identifier is 7 bits long. */ #define NFC_HCI_MAX_PIPES 127 struct nfc_hci_init_data { u8 gate_count; struct nfc_hci_gate gates[NFC_HCI_MAX_CUSTOM_GATES]; char session_id[9]; }; typedef int (*xmit) (struct sk_buff *skb, void *cb_data); #define NFC_HCI_MAX_GATES 256 /* * These values can be specified by a driver to indicate it requires some * adaptation of the HCI standard. * * NFC_HCI_QUIRK_SHORT_CLEAR - send HCI_ADM_CLEAR_ALL_PIPE cmd with no params */ enum { NFC_HCI_QUIRK_SHORT_CLEAR = 0, }; struct nfc_hci_dev { struct nfc_dev *ndev; u32 max_data_link_payload; bool shutting_down; struct mutex msg_tx_mutex; struct list_head msg_tx_queue; struct work_struct msg_tx_work; struct timer_list cmd_timer; struct hci_msg *cmd_pending_msg; struct sk_buff_head rx_hcp_frags; struct work_struct msg_rx_work; struct sk_buff_head msg_rx_queue; struct nfc_hci_ops *ops; struct nfc_llc *llc; struct nfc_hci_init_data init_data; void *clientdata; u8 gate2pipe[NFC_HCI_MAX_GATES]; struct nfc_hci_pipe pipes[NFC_HCI_MAX_PIPES]; u8 sw_romlib; u8 sw_patch; u8 sw_flashlib_major; u8 sw_flashlib_minor; u8 hw_derivative; u8 hw_version; u8 hw_mpw; u8 hw_software; u8 hw_bsid; int async_cb_type; data_exchange_cb_t async_cb; void *async_cb_context; u8 *gb; size_t gb_len; unsigned long quirks; }; /* hci device allocation */ struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops, struct nfc_hci_init_data *init_data, unsigned long quirks, u32 protocols, const char *llc_name, int tx_headroom, int tx_tailroom, int max_link_payload); void nfc_hci_free_device(struct nfc_hci_dev *hdev); int nfc_hci_register_device(struct nfc_hci_dev *hdev); void nfc_hci_unregister_device(struct nfc_hci_dev *hdev); void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata); void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev); static inline int nfc_hci_set_vendor_cmds(struct nfc_hci_dev *hdev, struct nfc_vendor_cmd *cmds, int n_cmds) { return nfc_set_vendor_cmds(hdev->ndev, cmds, n_cmds); } void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err); int nfc_hci_result_to_errno(u8 result); void nfc_hci_reset_pipes(struct nfc_hci_dev *dev); void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host); /* Host IDs */ #define NFC_HCI_HOST_CONTROLLER_ID 0x00 #define NFC_HCI_TERMINAL_HOST_ID 0x01 #define NFC_HCI_UICC_HOST_ID 0x02 /* Host Controller Gates and registry indexes */ #define NFC_HCI_ADMIN_GATE 0x00 #define NFC_HCI_ADMIN_SESSION_IDENTITY 0x01 #define NFC_HCI_ADMIN_MAX_PIPE 0x02 #define NFC_HCI_ADMIN_WHITELIST 0x03 #define NFC_HCI_ADMIN_HOST_LIST 0x04 #define NFC_HCI_LOOPBACK_GATE 0x04 #define NFC_HCI_ID_MGMT_GATE 0x05 #define NFC_HCI_ID_MGMT_VERSION_SW 0x01 #define NFC_HCI_ID_MGMT_VERSION_HW 0x03 #define NFC_HCI_ID_MGMT_VENDOR_NAME 0x04 #define NFC_HCI_ID_MGMT_MODEL_ID 0x05 #define NFC_HCI_ID_MGMT_HCI_VERSION 0x02 #define NFC_HCI_ID_MGMT_GATES_LIST 0x06 #define NFC_HCI_LINK_MGMT_GATE 0x06 #define NFC_HCI_LINK_MGMT_REC_ERROR 0x01 #define NFC_HCI_RF_READER_B_GATE 0x11 #define NFC_HCI_RF_READER_B_PUPI 0x03 #define NFC_HCI_RF_READER_B_APPLICATION_DATA 0x04 #define NFC_HCI_RF_READER_B_AFI 0x02 #define NFC_HCI_RF_READER_B_HIGHER_LAYER_RESPONSE 0x01 #define NFC_HCI_RF_READER_B_HIGHER_LAYER_DATA 0x05 #define NFC_HCI_RF_READER_A_GATE 0x13 #define NFC_HCI_RF_READER_A_UID 0x02 #define NFC_HCI_RF_READER_A_ATQA 0x04 #define NFC_HCI_RF_READER_A_APPLICATION_DATA 0x05 #define NFC_HCI_RF_READER_A_SAK 0x03 #define NFC_HCI_RF_READER_A_FWI_SFGT 0x06 #define NFC_HCI_RF_READER_A_DATARATE_MAX 0x01 #define NFC_HCI_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) #define NFC_HCI_TYPE_A_SEL_PROT_MIFARE 0 #define NFC_HCI_TYPE_A_SEL_PROT_ISO14443 1 #define NFC_HCI_TYPE_A_SEL_PROT_DEP 2 #define NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP 3 /* Generic events */ #define NFC_HCI_EVT_HCI_END_OF_OPERATION 0x01 #define NFC_HCI_EVT_POST_DATA 0x02 #define NFC_HCI_EVT_HOT_PLUG 0x03 /* Generic commands */ #define NFC_HCI_ANY_SET_PARAMETER 0x01 #define NFC_HCI_ANY_GET_PARAMETER 0x02 #define NFC_HCI_ANY_OPEN_PIPE 0x03 #define NFC_HCI_ANY_CLOSE_PIPE 0x04 /* Reader RF gates events */ #define NFC_HCI_EVT_READER_REQUESTED 0x10 #define NFC_HCI_EVT_END_OPERATION 0x11 /* Reader Application gate events */ #define NFC_HCI_EVT_TARGET_DISCOVERED 0x10 /* receiving messages from lower layer */ void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result, struct sk_buff *skb); void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd, struct sk_buff *skb); void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event, struct sk_buff *skb); void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb); /* connecting to gates and sending hci instructions */ int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate, u8 pipe); int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate); int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev); int nfc_hci_get_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx, struct sk_buff **skb); int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx, const u8 *param, size_t param_len); int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd, const u8 *param, size_t param_len, struct sk_buff **skb); int nfc_hci_send_cmd_async(struct nfc_hci_dev *hdev, u8 gate, u8 cmd, const u8 *param, size_t param_len, data_exchange_cb_t cb, void *cb_context); int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event, const u8 *param, size_t param_len); int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate); u32 nfc_hci_sak_to_protocol(u8 sak); #endif /* __NET_HCI_H */ t::20170111-fw-fixes)$ sudo ./fw_fallback.sh ./fw_fallback.sh: timeout works ./fw_fallback.sh: firmware comparison works ./fw_fallback.sh: fallback mechanism works [ this then sits here when it is trying the cancellation test ] Kernel log: test_firmware: loading 'nope-test-firmware.bin' misc test_firmware: Direct firmware load for nope-test-firmware.bin failed with error -2 misc test_firmware: Falling back to user helper BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 IP: _request_firmware+0xa27/0xad0 PGD 0 Oops: 0000 [#1] SMP Modules linked in: test_firmware(E) ... etc ... CPU: 1 PID: 1396 Comm: fw_fallback.sh Tainted: G W E 4.10.0-rc3-next-20170111+ #30 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.10.1-0-g8891697-prebuilt.qemu-project.org 04/01/2014 task: ffff9740b27f4340 task.stack: ffffbb15c0bc8000 RIP: 0010:_request_firmware+0xa27/0xad0 RSP: 0018:ffffbb15c0bcbd10 EFLAGS: 00010246 RAX: 00000000fffffffe RBX: ffff9740afe5aa80 RCX: 0000000000000000 RDX: ffff9740b27f4340 RSI: 0000000000000283 RDI: 0000000000000000 RBP: ffffbb15c0bcbd90 R08: ffffbb15c0bcbcd8 R09: 0000000000000000 R10: 0000000894a0d4b1 R11: 000000000000008c R12: ffffffffc0312480 R13: 0000000000000005 R14: ffff9740b1c32400 R15: 00000000000003e8 FS: 00007f8604422700(0000) GS:ffff9740bfc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000038 CR3: 000000012164c000 CR4: 00000000000006e0 Call Trace: request_firmware+0x37/0x50 trigger_request_store+0x79/0xd0 [test_firmware] dev_attr_store+0x18/0x30 sysfs_kf_write+0x37/0x40 kernfs_fop_write+0x110/0x1a0 __vfs_write+0x37/0x160 ? _cond_resched+0x1a/0x50 vfs_write+0xb5/0x1a0 SyS_write+0x55/0xc0 ? trace_do_page_fault+0x37/0xd0 entry_SYSCALL_64_fastpath+0x1e/0xad RIP: 0033:0x7f8603f49620 RSP: 002b:00007fff6287b788 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000055c307b110a0 RCX: 00007f8603f49620 RDX: 0000000000000016 RSI: 000055c3084d8a90 RDI: 0000000000000001 RBP: 0000000000000016 R08: 000000000000c0ff R09: 000055c3084d6336 R10: 000055c307b108b0 R11: 0000000000000246 R12: 000055c307b13c80 R13: 000055c3084d6320 R14: 0000000000000000 R15: 00007fff6287b950 Code: 9f 64 84 e8 9c 61 fe ff b8 f4 ff ff ff e9 6b f9 ff ff 48 c7 c7 40 6b 8d 84 89 45 a8 e8 43 84 18 00 49 8b be 00 03 00 00 8b 45 a8 <83> 7f 38 02 74 08 e8 6e ec ff ff 8b 45 a8 49 c7 86 00 03 00 00 RIP: _request_firmware+0xa27/0xad0 RSP: ffffbb15c0bcbd10 CR2: 0000000000000038 ---[ end trace 6d94ac339c133e6f ]--- Fixes: 5d47ec02c37e ("firmware: Correct handling of fw_state_wait() return value") Reported-and-Tested-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reported-and-Tested-by: Patrick Bruenn <p.bruenn@beckhoff.com> Reported-by: Chris Wilson <chris@chris-wilson.co.uk> CC: <stable@vger.kernel.org> [3.10+] Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/soc/codecs/wm8993.c')