'\" t
.\"     Title: struct spi_flash_read_message
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Serial Peripheral Interface (SPI)
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "STRUCT SPI_FLASH_REA" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Serial Peripheral Interface (S"
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.SH "NAME"
struct_spi_flash_read_message \- flash specific information for spi\-masters that provide accelerated flash read interfaces
.SH "SYNOPSIS"
.sp
.nf
struct spi_flash_read_message {
  void * buf;
  loff_t from;
  size_t len;
  size_t retlen;
  u8 read_opcode;
  u8 addr_width;
  u8 dummy_bytes;
  u8 opcode_nbits;
  u8 addr_nbits;
  u8 data_nbits;
  struct sg_table rx_sg;
  bool cur_msg_mapped;
};  
.fi
.SH "MEMBERS"
.PP
buf
.RS 4
buffer to read data
.RE
.PP
from
.RS 4
offset within the flash from where data is to be read
.RE
.PP
len
.RS 4
length of data to be read
.RE
.PP
retlen
.RS 4
actual length of data read
.RE
.PP
read_opcode
.RS 4
read_opcode to be used to communicate with flash
.RE
.PP
addr_width
.RS 4
number of address bytes
.RE
.PP
dummy_bytes
.RS 4
number of dummy bytes
.RE
.PP
opcode_nbits
.RS 4
number of lines to send opcode
.RE
.PP
addr_nbits
.RS 4
number of lines to send address
.RE
.PP
data_nbits
.RS 4
number of lines for data
.RE
.PP
rx_sg
.RS 4
Scatterlist for receive data read from flash
.RE
.PP
cur_msg_mapped
.RS 4
message has been mapped for DMA
.RE
.SH "COPYRIGHT"
.br