diff options
Diffstat (limited to 'contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe')
10 files changed, 768 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/abft.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/abft.h new file mode 100644 index 0000000..9065e61 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/abft.h @@ -0,0 +1,37 @@ +#ifndef _GPXE_ABFT_H +#define _GPXE_ABFT_H + +/** @file + * + * AoE boot firmware table + * + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#include <stdint.h> +#include <gpxe/acpi.h> +#include <gpxe/if_ether.h> + +/** AoE boot firmware table signature */ +#define ABFT_SIG "aBFT" + +/** + * AoE Boot Firmware Table (aBFT) + */ +struct abft_table { + /** ACPI header */ + struct acpi_description_header acpi; + /** AoE shelf */ + uint16_t shelf; + /** AoE slot */ + uint8_t slot; + /** Reserved */ + uint8_t reserved_a; + /** MAC address */ + uint8_t mac[ETH_ALEN]; +} __attribute__ (( packed )); + +extern void abft_fill_data ( struct aoe_session *aoe ); + +#endif /* _GPXE_ABFT_H */ diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/bios_nap.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/bios_nap.h new file mode 100644 index 0000000..c32429b --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/bios_nap.h @@ -0,0 +1,18 @@ +#ifndef _GPXE_BIOS_NAP_H +#define _GPXE_BIOS_NAP_H + +/** @file + * + * BIOS CPU sleeping + * + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#ifdef NAP_PCBIOS +#define NAP_PREFIX_pcbios +#else +#define NAP_PREFIX_pcbios __pcbios_ +#endif + +#endif /* _GPXE_BIOS_NAP_H */ diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/bios_smbios.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/bios_smbios.h new file mode 100644 index 0000000..83726b1 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/bios_smbios.h @@ -0,0 +1,18 @@ +#ifndef _GPXE_BIOS_SMBIOS_H +#define _GPXE_BIOS_SMBIOS_H + +/** @file + * + * Standard PC-BIOS SMBIOS interface + * + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#ifdef SMBIOS_PCBIOS +#define SMBIOS_PREFIX_pcbios +#else +#define SMBIOS_PREFIX_pcbios __pcbios_ +#endif + +#endif /* _GPXE_BIOS_SMBIOS_H */ diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/bios_timer.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/bios_timer.h new file mode 100644 index 0000000..ed9df52 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/bios_timer.h @@ -0,0 +1,44 @@ +#ifndef _GPXE_BIOS_TIMER_H +#define _GPXE_BIOS_TIMER_H + +/** @file + * + * BIOS timer + * + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#ifdef TIMER_PCBIOS +#define TIMER_PREFIX_pcbios +#else +#define TIMER_PREFIX_pcbios __pcbios_ +#endif + +#include <gpxe/timer2.h> + +/** + * Delay for a fixed number of microseconds + * + * @v usecs Number of microseconds for which to delay + */ +static inline __always_inline void +TIMER_INLINE ( pcbios, udelay ) ( unsigned long usecs ) { + /* BIOS timer is not high-resolution enough for udelay(), so + * we use timer2 + */ + timer2_udelay ( usecs ); +} + +/** + * Get number of ticks per second + * + * @ret ticks_per_sec Number of ticks per second + */ +static inline __always_inline unsigned long +TIMER_INLINE ( pcbios, ticks_per_sec ) ( void ) { + /* BIOS timer ticks over at 18.2 ticks per second */ + return 18; +} + +#endif /* _GPXE_BIOS_TIMER_H */ diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/ibft.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/ibft.h new file mode 100644 index 0000000..c41e2e4 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/ibft.h @@ -0,0 +1,302 @@ +#ifndef _GPXE_IBFT_H +#define _GPXE_IBFT_H + +/* + * Copyright Fen Systems Ltd. 2007. Portions of this code are derived + * from IBM Corporation Sample Programs. Copyright IBM Corporation + * 2004, 2007. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +FILE_LICENCE ( BSD2 ); + +/** @file + * + * iSCSI boot firmware table + * + * The information in this file is derived from the document "iSCSI + * Boot Firmware Table (iBFT)" as published by IBM at + * + * ftp://ftp.software.ibm.com/systems/support/system_x_pdf/ibm_iscsi_boot_firmware_table_v1.02.pdf + * + */ + +#include <stdint.h> +#include <gpxe/acpi.h> +#include <gpxe/in.h> + +/** iSCSI Boot Firmware Table signature */ +#define IBFT_SIG "iBFT" + +/** An offset from the start of the iBFT */ +typedef uint16_t ibft_off_t; + +/** Length of a string within the iBFT (excluding terminating NUL) */ +typedef uint16_t ibft_size_t; + +/** A string within the iBFT */ +struct ibft_string { + /** Length of string */ + ibft_size_t length; + /** Offset to string */ + ibft_off_t offset; +} __attribute__ (( packed )); + +/** An IP address within the iBFT */ +struct ibft_ipaddr { + /** Reserved; must be zero */ + uint16_t zeroes[5]; + /** Must be 0xffff if IPv4 address is present, otherwise zero */ + uint16_t ones; + /** The IPv4 address, or zero if not present */ + struct in_addr in; +} __attribute__ (( packed )); + +/** + * iBFT structure header + * + * This structure is common to several sections within the iBFT. + */ +struct ibft_header { + /** Structure ID + * + * This is an IBFT_STRUCTURE_ID_XXX constant + */ + uint8_t structure_id; + /** Version (always 1) */ + uint8_t version; + /** Length, including this header */ + uint16_t length; + /** Index + * + * This is the number of the NIC or Target, when applicable. + */ + uint8_t index; + /** Flags */ + uint8_t flags; +} __attribute__ (( packed )); + +/** + * iBFT Control structure + * + */ +struct ibft_control { + /** Common header */ + struct ibft_header header; + /** Extensions */ + uint16_t extensions; + /** Offset to Initiator structure */ + ibft_off_t initiator; + /** Offset to NIC structure for NIC 0 */ + ibft_off_t nic_0; + /** Offset to Target structure for target 0 */ + ibft_off_t target_0; + /** Offset to NIC structure for NIC 1 */ + ibft_off_t nic_1; + /** Offset to Target structure for target 1 */ + ibft_off_t target_1; +} __attribute__ (( packed )); + +/** Structure ID for Control section */ +#define IBFT_STRUCTURE_ID_CONTROL 0x01 + +/** Attempt login only to specified target + * + * If this flag is not set, all targets will be logged in to. + */ +#define IBFT_FL_CONTROL_SINGLE_LOGIN_ONLY 0x01 + +/** + * iBFT Initiator structure + * + */ +struct ibft_initiator { + /** Common header */ + struct ibft_header header; + /** iSNS server */ + struct ibft_ipaddr isns_server; + /** SLP server */ + struct ibft_ipaddr slp_server; + /** Primary and secondary Radius servers */ + struct ibft_ipaddr radius[2]; + /** Initiator name */ + struct ibft_string initiator_name; +} __attribute__ (( packed )); + +/** Structure ID for Initiator section */ +#define IBFT_STRUCTURE_ID_INITIATOR 0x02 + +/** Initiator block valid */ +#define IBFT_FL_INITIATOR_BLOCK_VALID 0x01 + +/** Initiator firmware boot selected */ +#define IBFT_FL_INITIATOR_FIRMWARE_BOOT_SELECTED 0x02 + +/** + * iBFT NIC structure + * + */ +struct ibft_nic { + /** Common header */ + struct ibft_header header; + /** IP address */ + struct ibft_ipaddr ip_address; + /** Subnet mask + * + * This is the length of the subnet mask in bits (e.g. /24). + */ + uint8_t subnet_mask_prefix; + /** Origin */ + uint8_t origin; + /** Default gateway */ + struct ibft_ipaddr gateway; + /** Primary and secondary DNS servers */ + struct ibft_ipaddr dns[2]; + /** DHCP server */ + struct ibft_ipaddr dhcp; + /** VLAN tag */ + uint16_t vlan; + /** MAC address */ + uint8_t mac_address[6]; + /** PCI bus:dev:fn */ + uint16_t pci_bus_dev_func; + /** Hostname */ + struct ibft_string hostname; +} __attribute__ (( packed )); + +/** Structure ID for NIC section */ +#define IBFT_STRUCTURE_ID_NIC 0x03 + +/** NIC block valid */ +#define IBFT_FL_NIC_BLOCK_VALID 0x01 + +/** NIC firmware boot selected */ +#define IBFT_FL_NIC_FIRMWARE_BOOT_SELECTED 0x02 + +/** NIC global / link local */ +#define IBFT_FL_NIC_GLOBAL 0x04 + +/** + * iBFT Target structure + * + */ +struct ibft_target { + /** Common header */ + struct ibft_header header; + /** IP address */ + struct ibft_ipaddr ip_address; + /** TCP port */ + uint16_t socket; + /** Boot LUN */ + uint64_t boot_lun; + /** CHAP type + * + * This is an IBFT_CHAP_XXX constant. + */ + uint8_t chap_type; + /** NIC association */ + uint8_t nic_association; + /** Target name */ + struct ibft_string target_name; + /** CHAP name */ + struct ibft_string chap_name; + /** CHAP secret */ + struct ibft_string chap_secret; + /** Reverse CHAP name */ + struct ibft_string reverse_chap_name; + /** Reverse CHAP secret */ + struct ibft_string reverse_chap_secret; +} __attribute__ (( packed )); + +/** Structure ID for Target section */ +#define IBFT_STRUCTURE_ID_TARGET 0x04 + +/** Target block valid */ +#define IBFT_FL_TARGET_BLOCK_VALID 0x01 + +/** Target firmware boot selected */ +#define IBFT_FL_TARGET_FIRMWARE_BOOT_SELECTED 0x02 + +/** Target use Radius CHAP */ +#define IBFT_FL_TARGET_USE_CHAP 0x04 + +/** Target use Radius rCHAP */ +#define IBFT_FL_TARGET_USE_RCHAP 0x08 + +/* Values for chap_type */ +#define IBFT_CHAP_NONE 0 /**< No CHAP authentication */ +#define IBFT_CHAP_ONE_WAY 1 /**< One-way CHAP */ +#define IBFT_CHAP_MUTUAL 2 /**< Mutual CHAP */ + +/** + * iSCSI Boot Firmware Table (iBFT) + */ +struct ibft_table { + /** ACPI header */ + struct acpi_description_header acpi; + /** Reserved */ + uint8_t reserved[12]; + /** Control structure */ + struct ibft_control control; +} __attribute__ (( packed )); + +/** + * iSCSI string block descriptor + * + * This is an internal structure that we use to keep track of the + * allocation of string data. + */ +struct ibft_string_block { + /** The iBFT containing these strings */ + struct ibft_table *table; + /** Offset of first free byte within iBFT */ + unsigned int offset; +}; + +/** Amount of space reserved for strings in a gPXE iBFT */ +#define IBFT_STRINGS_SIZE 384 + +/** + * An iBFT created by gPXE + * + */ +struct gpxe_ibft { + /** The fixed section */ + struct ibft_table table; + /** The Initiator section */ + struct ibft_initiator initiator __attribute__ (( aligned ( 16 ) )); + /** The NIC section */ + struct ibft_nic nic __attribute__ (( aligned ( 16 ) )); + /** The Target section */ + struct ibft_target target __attribute__ (( aligned ( 16 ) )); + /** Strings block */ + char strings[IBFT_STRINGS_SIZE]; +} __attribute__ (( packed, aligned ( 16 ) )); + +struct net_device; +struct iscsi_session; + +extern int ibft_fill_data ( struct net_device *netdev, + struct iscsi_session *iscsi ); + +#endif /* _GPXE_IBFT_H */ diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/memtop_umalloc.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/memtop_umalloc.h new file mode 100644 index 0000000..eaf7025 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/memtop_umalloc.h @@ -0,0 +1,18 @@ +#ifndef _GPXE_MEMTOP_UMALLOC_H +#define _GPXE_MEMTOP_UMALLOC_H + +/** @file + * + * External memory allocation + * + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#ifdef UMALLOC_MEMTOP +#define UMALLOC_PREFIX_memtop +#else +#define UMALLOC_PREFIX_memtop __memtop_ +#endif + +#endif /* _GPXE_MEMTOP_UMALLOC_H */ diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/rdtsc_timer.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/rdtsc_timer.h new file mode 100644 index 0000000..67ba22f --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/rdtsc_timer.h @@ -0,0 +1,39 @@ +#ifndef _GPXE_RDTSC_TIMER_H +#define _GPXE_RDTSC_TIMER_H + +/** @file + * + * RDTSC timer + * + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#ifdef TIMER_RDTSC +#define TIMER_PREFIX_rdtsc +#else +#define TIMER_PREFIX_rdtsc __rdtsc_ +#endif + +/** + * RDTSC values can easily overflow an unsigned long. We discard the + * low-order bits in order to obtain sensibly-scaled values. + */ +#define TSC_SHIFT 8 + +/** + * Get current system time in ticks + * + * @ret ticks Current time, in ticks + */ +static inline __always_inline unsigned long +TIMER_INLINE ( rdtsc, currticks ) ( void ) { + unsigned long ticks; + + __asm__ __volatile__ ( "rdtsc\n\t" + "shrdl %1, %%edx, %%eax\n\t" + : "=a" ( ticks ) : "i" ( TSC_SHIFT ) : "edx" ); + return ticks; +} + +#endif /* _GPXE_RDTSC_TIMER_H */ diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/sbft.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/sbft.h new file mode 100644 index 0000000..3003843 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/sbft.h @@ -0,0 +1,125 @@ +#ifndef _GPXE_SBFT_H +#define _GPXE_SBFT_H + +/* + * Copyright (C) 2009 Fen Systems Ltd <mbrown@fensystems.co.uk>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +FILE_LICENCE ( BSD2 ); + +/** @file + * + * SRP boot firmware table + * + * The working draft specification for the SRP boot firmware table can + * be found at + * + * http://etherboot.org/wiki/srp/sbft + * + */ + +#include <stdint.h> +#include <gpxe/acpi.h> +#include <gpxe/scsi.h> +#include <gpxe/srp.h> +#include <gpxe/ib_srp.h> + +/** SRP Boot Firmware Table signature */ +#define SBFT_SIG "sBFT" + +/** An offset from the start of the sBFT */ +typedef uint16_t sbft_off_t; + +/** + * SRP Boot Firmware Table + */ +struct sbft_table { + /** ACPI header */ + struct acpi_description_header acpi; + /** Offset to SCSI subtable */ + sbft_off_t scsi_offset; + /** Offset to SRP subtable */ + sbft_off_t srp_offset; + /** Offset to IB subtable, if present */ + sbft_off_t ib_offset; + /** Reserved */ + uint8_t reserved[6]; +} __attribute__ (( packed )); + +/** + * sBFT SCSI subtable + */ +struct sbft_scsi_subtable { + /** LUN */ + struct scsi_lun lun; +} __attribute__ (( packed )); + +/** + * sBFT SRP subtable + */ +struct sbft_srp_subtable { + /** Initiator and target ports */ + struct srp_port_ids port_ids; +} __attribute__ (( packed )); + +/** + * sBFT IB subtable + */ +struct sbft_ib_subtable { + /** Source GID */ + struct ib_gid sgid; + /** Destination GID */ + struct ib_gid dgid; + /** Service ID */ + struct ib_gid_half service_id; + /** Partition key */ + uint16_t pkey; + /** Reserved */ + uint8_t reserved[6]; +} __attribute__ (( packed )); + +/** + * An sBFT created by gPXE + */ +struct gpxe_sbft { + /** The table header */ + struct sbft_table table; + /** The SCSI subtable */ + struct sbft_scsi_subtable scsi; + /** The SRP subtable */ + struct sbft_srp_subtable srp; + /** The IB subtable */ + struct sbft_ib_subtable ib; +} __attribute__ (( packed, aligned ( 16 ) )); + +struct srp_device; + +extern int sbft_fill_data ( struct srp_device *srp ); + +#endif /* _GPXE_SBFT_H */ diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/timer2.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/timer2.h new file mode 100644 index 0000000..8f11951 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/timer2.h @@ -0,0 +1,14 @@ +#ifndef _GPXE_TIMER2_H +#define _GPXE_TIMER2_H + +/** @file + * + * Timer chip control + * + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +extern void timer2_udelay ( unsigned long usecs ); + +#endif /* _GPXE_TIMER2_H */ diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/x86_io.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/x86_io.h new file mode 100644 index 0000000..beb5b22 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/gpxe/x86_io.h @@ -0,0 +1,153 @@ +#ifndef _GPXE_X86_IO_H +#define _GPXE_X86_IO_H + +/** @file + * + * gPXE I/O API for x86 + * + * i386 uses direct pointer dereferences for accesses to memory-mapped + * I/O space, and the inX/outX instructions for accesses to + * port-mapped I/O space. + * + * 64-bit atomic accesses (readq() and writeq()) use MMX instructions, + * and will crash original Pentium and earlier CPUs. Fortunately, no + * hardware that requires atomic 64-bit accesses will physically fit + * into a machine with such an old CPU anyway. + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#ifdef IOAPI_X86 +#define IOAPI_PREFIX_x86 +#else +#define IOAPI_PREFIX_x86 __x86_ +#endif + +/* + * Memory space mappings + * + */ + +/* + * Physical<->Bus and Bus<->I/O address mappings + * + */ + +static inline __always_inline unsigned long +IOAPI_INLINE ( x86, phys_to_bus ) ( unsigned long phys_addr ) { + return phys_addr; +} + +static inline __always_inline unsigned long +IOAPI_INLINE ( x86, bus_to_phys ) ( unsigned long bus_addr ) { + return bus_addr; +} + +static inline __always_inline void * +IOAPI_INLINE ( x86, ioremap ) ( unsigned long bus_addr, size_t len __unused ) { + return phys_to_virt ( bus_addr ); +} + +static inline __always_inline void +IOAPI_INLINE ( x86, iounmap ) ( volatile const void *io_addr __unused ) { + /* Nothing to do */ +} + +static inline __always_inline unsigned long +IOAPI_INLINE ( x86, io_to_bus ) ( volatile const void *io_addr ) { + return virt_to_phys ( io_addr ); +} + +/* + * MMIO reads and writes up to 32 bits + * + */ + +#define X86_READX( _api_func, _type ) \ +static inline __always_inline _type \ +IOAPI_INLINE ( x86, _api_func ) ( volatile _type *io_addr ) { \ + return *io_addr; \ +} +X86_READX ( readb, uint8_t ); +X86_READX ( readw, uint16_t ); +X86_READX ( readl, uint32_t ); + +#define X86_WRITEX( _api_func, _type ) \ +static inline __always_inline void \ +IOAPI_INLINE ( x86, _api_func ) ( _type data, \ + volatile _type *io_addr ) { \ + *io_addr = data; \ +} +X86_WRITEX ( writeb, uint8_t ); +X86_WRITEX ( writew, uint16_t ); +X86_WRITEX ( writel, uint32_t ); + +/* + * PIO reads and writes up to 32 bits + * + */ + +#define X86_INX( _insn_suffix, _type, _reg_prefix ) \ +static inline __always_inline _type \ +IOAPI_INLINE ( x86, in ## _insn_suffix ) ( volatile _type *io_addr ) { \ + _type data; \ + __asm__ __volatile__ ( "in" #_insn_suffix " %w1, %" _reg_prefix "0" \ + : "=a" ( data ) : "Nd" ( io_addr ) ); \ + return data; \ +} \ +static inline __always_inline void \ +IOAPI_INLINE ( x86, ins ## _insn_suffix ) ( volatile _type *io_addr, \ + _type *data, \ + unsigned int count ) { \ + unsigned int discard_D; \ + __asm__ __volatile__ ( "rep ins" #_insn_suffix \ + : "=D" ( discard_D ) \ + : "d" ( io_addr ), "c" ( count ), \ + "0" ( data ) ); \ +} +X86_INX ( b, uint8_t, "b" ); +X86_INX ( w, uint16_t, "w" ); +X86_INX ( l, uint32_t, "k" ); + +#define X86_OUTX( _insn_suffix, _type, _reg_prefix ) \ +static inline __always_inline void \ +IOAPI_INLINE ( x86, out ## _insn_suffix ) ( _type data, \ + volatile _type *io_addr ) { \ + __asm__ __volatile__ ( "out" #_insn_suffix " %" _reg_prefix "0, %w1" \ + : : "a" ( data ), "Nd" ( io_addr ) ); \ +} \ +static inline __always_inline void \ +IOAPI_INLINE ( x86, outs ## _insn_suffix ) ( volatile _type *io_addr, \ + const _type *data, \ + unsigned int count ) { \ + unsigned int discard_S; \ + __asm__ __volatile__ ( "rep outs" #_insn_suffix \ + : "=S" ( discard_S ) \ + : "d" ( io_addr ), "c" ( count ), \ + "0" ( data ) ); \ +} +X86_OUTX ( b, uint8_t, "b" ); +X86_OUTX ( w, uint16_t, "w" ); +X86_OUTX ( l, uint32_t, "k" ); + +/* + * Slow down I/O + * + */ + +static inline __always_inline void +IOAPI_INLINE ( x86, iodelay ) ( void ) { + __asm__ __volatile__ ( "outb %al, $0x80" ); +} + +/* + * Memory barrier + * + */ + +static inline __always_inline void +IOAPI_INLINE ( x86, mb ) ( void ) { + __asm__ __volatile__ ( "lock; addl $0, 0(%%esp)" : : : "memory" ); +} + +#endif /* _GPXE_X86_IO_H */ |