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kernel-ark/include/pcmcia/cistpl.h
Gustavo A. R. Silva 06ed6aa56f pcmcia: Replace zero-length array with flexible-array 
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]

sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.

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 <gustavoars@kernel.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2020-05-18 10:28:31 +02:00

578 lines
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* cistpl.h
*
* The initial developer of the original code is David A. Hinds
* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
*
* (C) 1999 David A. Hinds
*/
#ifndef _LINUX_CISTPL_H
#define _LINUX_CISTPL_H
typedef unsigned char cisdata_t;
#define CISTPL_NULL 0x00
#define CISTPL_DEVICE 0x01
#define CISTPL_LONGLINK_CB 0x02
#define CISTPL_INDIRECT 0x03
#define CISTPL_CONFIG_CB 0x04
#define CISTPL_CFTABLE_ENTRY_CB 0x05
#define CISTPL_LONGLINK_MFC 0x06
#define CISTPL_BAR 0x07
#define CISTPL_PWR_MGMNT 0x08
#define CISTPL_EXTDEVICE 0x09
#define CISTPL_CHECKSUM 0x10
#define CISTPL_LONGLINK_A 0x11
#define CISTPL_LONGLINK_C 0x12
#define CISTPL_LINKTARGET 0x13
#define CISTPL_NO_LINK 0x14
#define CISTPL_VERS_1 0x15
#define CISTPL_ALTSTR 0x16
#define CISTPL_DEVICE_A 0x17
#define CISTPL_JEDEC_C 0x18
#define CISTPL_JEDEC_A 0x19
#define CISTPL_CONFIG 0x1a
#define CISTPL_CFTABLE_ENTRY 0x1b
#define CISTPL_DEVICE_OC 0x1c
#define CISTPL_DEVICE_OA 0x1d
#define CISTPL_DEVICE_GEO 0x1e
#define CISTPL_DEVICE_GEO_A 0x1f
#define CISTPL_MANFID 0x20
#define CISTPL_FUNCID 0x21
#define CISTPL_FUNCE 0x22
#define CISTPL_SWIL 0x23
#define CISTPL_END 0xff
/* Layer 2 tuples */
#define CISTPL_VERS_2 0x40
#define CISTPL_FORMAT 0x41
#define CISTPL_GEOMETRY 0x42
#define CISTPL_BYTEORDER 0x43
#define CISTPL_DATE 0x44
#define CISTPL_BATTERY 0x45
#define CISTPL_FORMAT_A 0x47
/* Layer 3 tuples */
#define CISTPL_ORG 0x46
#define CISTPL_SPCL 0x90
typedef struct cistpl_longlink_t {
u_int addr;
} cistpl_longlink_t;
typedef struct cistpl_checksum_t {
u_short addr;
u_short len;
u_char sum;
} cistpl_checksum_t;
#define CISTPL_MAX_FUNCTIONS 8
#define CISTPL_MFC_ATTR 0x00
#define CISTPL_MFC_COMMON 0x01
typedef struct cistpl_longlink_mfc_t {
u_char nfn;
struct {
u_char space;
u_int addr;
} fn[CISTPL_MAX_FUNCTIONS];
} cistpl_longlink_mfc_t;
#define CISTPL_MAX_ALTSTR_STRINGS 4
typedef struct cistpl_altstr_t {
u_char ns;
u_char ofs[CISTPL_MAX_ALTSTR_STRINGS];
char str[254];
} cistpl_altstr_t;
#define CISTPL_DTYPE_NULL 0x00
#define CISTPL_DTYPE_ROM 0x01
#define CISTPL_DTYPE_OTPROM 0x02
#define CISTPL_DTYPE_EPROM 0x03
#define CISTPL_DTYPE_EEPROM 0x04
#define CISTPL_DTYPE_FLASH 0x05
#define CISTPL_DTYPE_SRAM 0x06
#define CISTPL_DTYPE_DRAM 0x07
#define CISTPL_DTYPE_FUNCSPEC 0x0d
#define CISTPL_DTYPE_EXTEND 0x0e
#define CISTPL_MAX_DEVICES 4
typedef struct cistpl_device_t {
u_char ndev;
struct {
u_char type;
u_char wp;
u_int speed;
u_int size;
} dev[CISTPL_MAX_DEVICES];
} cistpl_device_t;
#define CISTPL_DEVICE_MWAIT 0x01
#define CISTPL_DEVICE_3VCC 0x02
typedef struct cistpl_device_o_t {
u_char flags;
cistpl_device_t device;
} cistpl_device_o_t;
#define CISTPL_VERS_1_MAX_PROD_STRINGS 4
typedef struct cistpl_vers_1_t {
u_char major;
u_char minor;
u_char ns;
u_char ofs[CISTPL_VERS_1_MAX_PROD_STRINGS];
char str[254];
} cistpl_vers_1_t;
typedef struct cistpl_jedec_t {
u_char nid;
struct {
u_char mfr;
u_char info;
} id[CISTPL_MAX_DEVICES];
} cistpl_jedec_t;
typedef struct cistpl_manfid_t {
u_short manf;
u_short card;
} cistpl_manfid_t;
#define CISTPL_FUNCID_MULTI 0x00
#define CISTPL_FUNCID_MEMORY 0x01
#define CISTPL_FUNCID_SERIAL 0x02
#define CISTPL_FUNCID_PARALLEL 0x03
#define CISTPL_FUNCID_FIXED 0x04
#define CISTPL_FUNCID_VIDEO 0x05
#define CISTPL_FUNCID_NETWORK 0x06
#define CISTPL_FUNCID_AIMS 0x07
#define CISTPL_FUNCID_SCSI 0x08
#define CISTPL_SYSINIT_POST 0x01
#define CISTPL_SYSINIT_ROM 0x02
typedef struct cistpl_funcid_t {
u_char func;
u_char sysinit;
} cistpl_funcid_t;
typedef struct cistpl_funce_t {
u_char type;
u_char data[];
} cistpl_funce_t;
/*======================================================================
Modem Function Extension Tuples
======================================================================*/
#define CISTPL_FUNCE_SERIAL_IF 0x00
#define CISTPL_FUNCE_SERIAL_CAP 0x01
#define CISTPL_FUNCE_SERIAL_SERV_DATA 0x02
#define CISTPL_FUNCE_SERIAL_SERV_FAX 0x03
#define CISTPL_FUNCE_SERIAL_SERV_VOICE 0x04
#define CISTPL_FUNCE_SERIAL_CAP_DATA 0x05
#define CISTPL_FUNCE_SERIAL_CAP_FAX 0x06
#define CISTPL_FUNCE_SERIAL_CAP_VOICE 0x07
#define CISTPL_FUNCE_SERIAL_IF_DATA 0x08
#define CISTPL_FUNCE_SERIAL_IF_FAX 0x09
#define CISTPL_FUNCE_SERIAL_IF_VOICE 0x0a
/* UART identification */
#define CISTPL_SERIAL_UART_8250 0x00
#define CISTPL_SERIAL_UART_16450 0x01
#define CISTPL_SERIAL_UART_16550 0x02
#define CISTPL_SERIAL_UART_8251 0x03
#define CISTPL_SERIAL_UART_8530 0x04
#define CISTPL_SERIAL_UART_85230 0x05
/* UART capabilities */
#define CISTPL_SERIAL_UART_SPACE 0x01
#define CISTPL_SERIAL_UART_MARK 0x02
#define CISTPL_SERIAL_UART_ODD 0x04
#define CISTPL_SERIAL_UART_EVEN 0x08
#define CISTPL_SERIAL_UART_5BIT 0x01
#define CISTPL_SERIAL_UART_6BIT 0x02
#define CISTPL_SERIAL_UART_7BIT 0x04
#define CISTPL_SERIAL_UART_8BIT 0x08
#define CISTPL_SERIAL_UART_1STOP 0x10
#define CISTPL_SERIAL_UART_MSTOP 0x20
#define CISTPL_SERIAL_UART_2STOP 0x40
typedef struct cistpl_serial_t {
u_char uart_type;
u_char uart_cap_0;
u_char uart_cap_1;
} cistpl_serial_t;
typedef struct cistpl_modem_cap_t {
u_char flow;
u_char cmd_buf;
u_char rcv_buf_0, rcv_buf_1, rcv_buf_2;
u_char xmit_buf_0, xmit_buf_1, xmit_buf_2;
} cistpl_modem_cap_t;
#define CISTPL_SERIAL_MOD_103 0x01
#define CISTPL_SERIAL_MOD_V21 0x02
#define CISTPL_SERIAL_MOD_V23 0x04
#define CISTPL_SERIAL_MOD_V22 0x08
#define CISTPL_SERIAL_MOD_212A 0x10
#define CISTPL_SERIAL_MOD_V22BIS 0x20
#define CISTPL_SERIAL_MOD_V26 0x40
#define CISTPL_SERIAL_MOD_V26BIS 0x80
#define CISTPL_SERIAL_MOD_V27BIS 0x01
#define CISTPL_SERIAL_MOD_V29 0x02
#define CISTPL_SERIAL_MOD_V32 0x04
#define CISTPL_SERIAL_MOD_V32BIS 0x08
#define CISTPL_SERIAL_MOD_V34 0x10
#define CISTPL_SERIAL_ERR_MNP2_4 0x01
#define CISTPL_SERIAL_ERR_V42_LAPM 0x02
#define CISTPL_SERIAL_CMPR_V42BIS 0x01
#define CISTPL_SERIAL_CMPR_MNP5 0x02
#define CISTPL_SERIAL_CMD_AT1 0x01
#define CISTPL_SERIAL_CMD_AT2 0x02
#define CISTPL_SERIAL_CMD_AT3 0x04
#define CISTPL_SERIAL_CMD_MNP_AT 0x08
#define CISTPL_SERIAL_CMD_V25BIS 0x10
#define CISTPL_SERIAL_CMD_V25A 0x20
#define CISTPL_SERIAL_CMD_DMCL 0x40
typedef struct cistpl_data_serv_t {
u_char max_data_0;
u_char max_data_1;
u_char modulation_0;
u_char modulation_1;
u_char error_control;
u_char compression;
u_char cmd_protocol;
u_char escape;
u_char encrypt;
u_char misc_features;
u_char ccitt_code[];
} cistpl_data_serv_t;
typedef struct cistpl_fax_serv_t {
u_char max_data_0;
u_char max_data_1;
u_char modulation;
u_char encrypt;
u_char features_0;
u_char features_1;
u_char ccitt_code[];
} cistpl_fax_serv_t;
typedef struct cistpl_voice_serv_t {
u_char max_data_0;
u_char max_data_1;
} cistpl_voice_serv_t;
/*======================================================================
LAN Function Extension Tuples
======================================================================*/
#define CISTPL_FUNCE_LAN_TECH 0x01
#define CISTPL_FUNCE_LAN_SPEED 0x02
#define CISTPL_FUNCE_LAN_MEDIA 0x03
#define CISTPL_FUNCE_LAN_NODE_ID 0x04
#define CISTPL_FUNCE_LAN_CONNECTOR 0x05
/* LAN technologies */
#define CISTPL_LAN_TECH_ARCNET 0x01
#define CISTPL_LAN_TECH_ETHERNET 0x02
#define CISTPL_LAN_TECH_TOKENRING 0x03
#define CISTPL_LAN_TECH_LOCALTALK 0x04
#define CISTPL_LAN_TECH_FDDI 0x05
#define CISTPL_LAN_TECH_ATM 0x06
#define CISTPL_LAN_TECH_WIRELESS 0x07
typedef struct cistpl_lan_tech_t {
u_char tech;
} cistpl_lan_tech_t;
typedef struct cistpl_lan_speed_t {
u_int speed;
} cistpl_lan_speed_t;
/* LAN media definitions */
#define CISTPL_LAN_MEDIA_UTP 0x01
#define CISTPL_LAN_MEDIA_STP 0x02
#define CISTPL_LAN_MEDIA_THIN_COAX 0x03
#define CISTPL_LAN_MEDIA_THICK_COAX 0x04
#define CISTPL_LAN_MEDIA_FIBER 0x05
#define CISTPL_LAN_MEDIA_900MHZ 0x06
#define CISTPL_LAN_MEDIA_2GHZ 0x07
#define CISTPL_LAN_MEDIA_5GHZ 0x08
#define CISTPL_LAN_MEDIA_DIFF_IR 0x09
#define CISTPL_LAN_MEDIA_PTP_IR 0x0a
typedef struct cistpl_lan_media_t {
u_char media;
} cistpl_lan_media_t;
typedef struct cistpl_lan_node_id_t {
u_char nb;
u_char id[16];
} cistpl_lan_node_id_t;
typedef struct cistpl_lan_connector_t {
u_char code;
} cistpl_lan_connector_t;
/*======================================================================
IDE Function Extension Tuples
======================================================================*/
#define CISTPL_IDE_INTERFACE 0x01
typedef struct cistpl_ide_interface_t {
u_char interface;
} cistpl_ide_interface_t;
/* First feature byte */
#define CISTPL_IDE_SILICON 0x04
#define CISTPL_IDE_UNIQUE 0x08
#define CISTPL_IDE_DUAL 0x10
/* Second feature byte */
#define CISTPL_IDE_HAS_SLEEP 0x01
#define CISTPL_IDE_HAS_STANDBY 0x02
#define CISTPL_IDE_HAS_IDLE 0x04
#define CISTPL_IDE_LOW_POWER 0x08
#define CISTPL_IDE_REG_INHIBIT 0x10
#define CISTPL_IDE_HAS_INDEX 0x20
#define CISTPL_IDE_IOIS16 0x40
typedef struct cistpl_ide_feature_t {
u_char feature1;
u_char feature2;
} cistpl_ide_feature_t;
#define CISTPL_FUNCE_IDE_IFACE 0x01
#define CISTPL_FUNCE_IDE_MASTER 0x02
#define CISTPL_FUNCE_IDE_SLAVE 0x03
/*======================================================================
Configuration Table Entries
======================================================================*/
#define CISTPL_BAR_SPACE 0x07
#define CISTPL_BAR_SPACE_IO 0x10
#define CISTPL_BAR_PREFETCH 0x20
#define CISTPL_BAR_CACHEABLE 0x40
#define CISTPL_BAR_1MEG_MAP 0x80
typedef struct cistpl_bar_t {
u_char attr;
u_int size;
} cistpl_bar_t;
typedef struct cistpl_config_t {
u_char last_idx;
u_int base;
u_int rmask[4];
u_char subtuples;
} cistpl_config_t;
/* These are bits in the 'present' field, and indices in 'param' */
#define CISTPL_POWER_VNOM 0
#define CISTPL_POWER_VMIN 1
#define CISTPL_POWER_VMAX 2
#define CISTPL_POWER_ISTATIC 3
#define CISTPL_POWER_IAVG 4
#define CISTPL_POWER_IPEAK 5
#define CISTPL_POWER_IDOWN 6
#define CISTPL_POWER_HIGHZ_OK 0x01
#define CISTPL_POWER_HIGHZ_REQ 0x02
typedef struct cistpl_power_t {
u_char present;
u_char flags;
u_int param[7];
} cistpl_power_t;
typedef struct cistpl_timing_t {
u_int wait, waitscale;
u_int ready, rdyscale;
u_int reserved, rsvscale;
} cistpl_timing_t;
#define CISTPL_IO_LINES_MASK 0x1f
#define CISTPL_IO_8BIT 0x20
#define CISTPL_IO_16BIT 0x40
#define CISTPL_IO_RANGE 0x80
#define CISTPL_IO_MAX_WIN 16
typedef struct cistpl_io_t {
u_char flags;
u_char nwin;
struct {
u_int base;
u_int len;
} win[CISTPL_IO_MAX_WIN];
} cistpl_io_t;
typedef struct cistpl_irq_t {
u_int IRQInfo1;
u_int IRQInfo2;
} cistpl_irq_t;
#define CISTPL_MEM_MAX_WIN 8
typedef struct cistpl_mem_t {
u_char flags;
u_char nwin;
struct {
u_int len;
u_int card_addr;
u_int host_addr;
} win[CISTPL_MEM_MAX_WIN];
} cistpl_mem_t;
#define CISTPL_CFTABLE_DEFAULT 0x0001
#define CISTPL_CFTABLE_BVDS 0x0002
#define CISTPL_CFTABLE_WP 0x0004
#define CISTPL_CFTABLE_RDYBSY 0x0008
#define CISTPL_CFTABLE_MWAIT 0x0010
#define CISTPL_CFTABLE_AUDIO 0x0800
#define CISTPL_CFTABLE_READONLY 0x1000
#define CISTPL_CFTABLE_PWRDOWN 0x2000
typedef struct cistpl_cftable_entry_t {
u_char index;
u_short flags;
u_char interface;
cistpl_power_t vcc, vpp1, vpp2;
cistpl_timing_t timing;
cistpl_io_t io;
cistpl_irq_t irq;
cistpl_mem_t mem;
u_char subtuples;
} cistpl_cftable_entry_t;
#define CISTPL_CFTABLE_MASTER 0x000100
#define CISTPL_CFTABLE_INVALIDATE 0x000200
#define CISTPL_CFTABLE_VGA_PALETTE 0x000400
#define CISTPL_CFTABLE_PARITY 0x000800
#define CISTPL_CFTABLE_WAIT 0x001000
#define CISTPL_CFTABLE_SERR 0x002000
#define CISTPL_CFTABLE_FAST_BACK 0x004000
#define CISTPL_CFTABLE_BINARY_AUDIO 0x010000
#define CISTPL_CFTABLE_PWM_AUDIO 0x020000
typedef struct cistpl_cftable_entry_cb_t {
u_char index;
u_int flags;
cistpl_power_t vcc, vpp1, vpp2;
u_char io;
cistpl_irq_t irq;
u_char mem;
u_char subtuples;
} cistpl_cftable_entry_cb_t;
typedef struct cistpl_device_geo_t {
u_char ngeo;
struct {
u_char buswidth;
u_int erase_block;
u_int read_block;
u_int write_block;
u_int partition;
u_int interleave;
} geo[CISTPL_MAX_DEVICES];
} cistpl_device_geo_t;
typedef struct cistpl_vers_2_t {
u_char vers;
u_char comply;
u_short dindex;
u_char vspec8, vspec9;
u_char nhdr;
u_char vendor, info;
char str[244];
} cistpl_vers_2_t;
typedef struct cistpl_org_t {
u_char data_org;
char desc[30];
} cistpl_org_t;
#define CISTPL_ORG_FS 0x00
#define CISTPL_ORG_APPSPEC 0x01
#define CISTPL_ORG_XIP 0x02
typedef struct cistpl_format_t {
u_char type;
u_char edc;
u_int offset;
u_int length;
} cistpl_format_t;
#define CISTPL_FORMAT_DISK 0x00
#define CISTPL_FORMAT_MEM 0x01
#define CISTPL_EDC_NONE 0x00
#define CISTPL_EDC_CKSUM 0x01
#define CISTPL_EDC_CRC 0x02
#define CISTPL_EDC_PCC 0x03
typedef union cisparse_t {
cistpl_device_t device;
cistpl_checksum_t checksum;
cistpl_longlink_t longlink;
cistpl_longlink_mfc_t longlink_mfc;
cistpl_vers_1_t version_1;
cistpl_altstr_t altstr;
cistpl_jedec_t jedec;
cistpl_manfid_t manfid;
cistpl_funcid_t funcid;
cistpl_funce_t funce;
cistpl_bar_t bar;
cistpl_config_t config;
cistpl_cftable_entry_t cftable_entry;
cistpl_cftable_entry_cb_t cftable_entry_cb;
cistpl_device_geo_t device_geo;
cistpl_vers_2_t vers_2;
cistpl_org_t org;
cistpl_format_t format;
} cisparse_t;
typedef struct tuple_t {
u_int Attributes;
cisdata_t DesiredTuple;
u_int Flags; /* internal use */
u_int LinkOffset; /* internal use */
u_int CISOffset; /* internal use */
cisdata_t TupleCode;
cisdata_t TupleLink;
cisdata_t TupleOffset;
cisdata_t TupleDataMax;
cisdata_t TupleDataLen;
cisdata_t *TupleData;
} tuple_t;
/* Special cisdata_t value */
#define RETURN_FIRST_TUPLE 0xff
/* Attributes for tuple calls */
#define TUPLE_RETURN_LINK 0x01
#define TUPLE_RETURN_COMMON 0x02
#define CISTPL_MAX_CIS_SIZE 0x200
#endif /* LINUX_CISTPL_H */
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