mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 06:47:41 +07:00
a7e454542b
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
182 lines
3.9 KiB
C
182 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Bluetooth supports for Qualcomm Atheros ROME chips
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*
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* Copyright (c) 2015 The Linux Foundation. All rights reserved.
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*/
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#define EDL_PATCH_CMD_OPCODE (0xFC00)
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#define EDL_NVM_ACCESS_OPCODE (0xFC0B)
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#define EDL_WRITE_BD_ADDR_OPCODE (0xFC14)
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#define EDL_PATCH_CMD_LEN (1)
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#define EDL_PATCH_VER_REQ_CMD (0x19)
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#define EDL_PATCH_TLV_REQ_CMD (0x1E)
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#define EDL_NVM_ACCESS_SET_REQ_CMD (0x01)
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#define MAX_SIZE_PER_TLV_SEGMENT (243)
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#define QCA_PRE_SHUTDOWN_CMD (0xFC08)
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#define EDL_CMD_REQ_RES_EVT (0x00)
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#define EDL_PATCH_VER_RES_EVT (0x19)
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#define EDL_APP_VER_RES_EVT (0x02)
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#define EDL_TVL_DNLD_RES_EVT (0x04)
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#define EDL_CMD_EXE_STATUS_EVT (0x00)
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#define EDL_SET_BAUDRATE_RSP_EVT (0x92)
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#define EDL_NVM_ACCESS_CODE_EVT (0x0B)
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#define EDL_TAG_ID_HCI (17)
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#define EDL_TAG_ID_DEEP_SLEEP (27)
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#define QCA_WCN3990_POWERON_PULSE 0xFC
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#define QCA_WCN3990_POWEROFF_PULSE 0xC0
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#define QCA_HCI_CC_OPCODE 0xFC00
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#define QCA_HCI_CC_SUCCESS 0x00
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enum qca_baudrate {
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QCA_BAUDRATE_115200 = 0,
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QCA_BAUDRATE_57600,
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QCA_BAUDRATE_38400,
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QCA_BAUDRATE_19200,
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QCA_BAUDRATE_9600,
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QCA_BAUDRATE_230400,
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QCA_BAUDRATE_250000,
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QCA_BAUDRATE_460800,
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QCA_BAUDRATE_500000,
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QCA_BAUDRATE_720000,
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QCA_BAUDRATE_921600,
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QCA_BAUDRATE_1000000,
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QCA_BAUDRATE_1250000,
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QCA_BAUDRATE_2000000,
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QCA_BAUDRATE_3000000,
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QCA_BAUDRATE_4000000,
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QCA_BAUDRATE_1600000,
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QCA_BAUDRATE_3200000,
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QCA_BAUDRATE_3500000,
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QCA_BAUDRATE_AUTO = 0xFE,
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QCA_BAUDRATE_RESERVED
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};
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enum qca_tlv_dnld_mode {
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QCA_SKIP_EVT_NONE,
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QCA_SKIP_EVT_VSE,
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QCA_SKIP_EVT_CC,
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QCA_SKIP_EVT_VSE_CC
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};
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enum qca_tlv_type {
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TLV_TYPE_PATCH = 1,
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TLV_TYPE_NVM
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};
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struct qca_fw_config {
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u8 type;
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char fwname[64];
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uint8_t user_baud_rate;
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enum qca_tlv_dnld_mode dnld_mode;
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enum qca_tlv_dnld_mode dnld_type;
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};
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struct edl_event_hdr {
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__u8 cresp;
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__u8 rtype;
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__u8 data[];
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} __packed;
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struct qca_btsoc_version {
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__le32 product_id;
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__le16 patch_ver;
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__le16 rom_ver;
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__le32 soc_id;
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} __packed;
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struct tlv_seg_resp {
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__u8 result;
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} __packed;
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struct tlv_type_patch {
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__le32 total_size;
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__le32 data_length;
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__u8 format_version;
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__u8 signature;
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__u8 download_mode;
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__u8 reserved1;
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__le16 product_id;
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__le16 rom_build;
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__le16 patch_version;
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__le16 reserved2;
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__le32 entry;
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} __packed;
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struct tlv_type_nvm {
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__le16 tag_id;
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__le16 tag_len;
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__le32 reserve1;
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__le32 reserve2;
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__u8 data[];
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} __packed;
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struct tlv_type_hdr {
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__le32 type_len;
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__u8 data[];
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} __packed;
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enum qca_btsoc_type {
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QCA_INVALID = -1,
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QCA_AR3002,
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QCA_ROME,
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QCA_WCN3990,
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QCA_WCN3991,
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QCA_WCN3998,
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};
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#if IS_ENABLED(CONFIG_BT_QCA)
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int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr);
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int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
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enum qca_btsoc_type soc_type, u32 soc_ver,
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const char *firmware_name);
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int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
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enum qca_btsoc_type);
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int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
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int qca_send_pre_shutdown_cmd(struct hci_dev *hdev);
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static inline bool qca_is_wcn399x(enum qca_btsoc_type soc_type)
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{
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return soc_type == QCA_WCN3990 || soc_type == QCA_WCN3991 ||
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soc_type == QCA_WCN3998;
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}
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#else
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static inline int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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{
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return -EOPNOTSUPP;
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}
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static inline int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
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enum qca_btsoc_type soc_type, u32 soc_ver,
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const char *firmware_name)
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{
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return -EOPNOTSUPP;
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}
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static inline int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
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enum qca_btsoc_type)
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{
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return -EOPNOTSUPP;
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}
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static inline int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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{
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return -EOPNOTSUPP;
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}
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static inline bool qca_is_wcn399x(enum qca_btsoc_type soc_type)
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{
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return false;
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}
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static inline int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
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{
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return -EOPNOTSUPP;
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}
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#endif
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