2507 lines
72 KiB
C
2507 lines
72 KiB
C
/*
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* Remote VUB300 SDIO/SDmem Host Controller Driver
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*
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* Copyright (C) 2010 Elan Digital Systems Limited
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*
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* based on USB Skeleton driver - 2.2
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*
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* Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2
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*
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* VUB300: is a USB 2.0 client device with a single SDIO/SDmem/MMC slot
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* Any SDIO/SDmem/MMC device plugged into the VUB300 will appear,
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* by virtue of this driver, to have been plugged into a local
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* SDIO host controller, similar to, say, a PCI Ricoh controller
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* This is because this kernel device driver is both a USB 2.0
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* client device driver AND an MMC host controller driver. Thus
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* if there is an existing driver for the inserted SDIO/SDmem/MMC
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* device then that driver will be used by the kernel to manage
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* the device in exactly the same fashion as if it had been
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* directly plugged into, say, a local pci bus Ricoh controller
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*
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* RANT: this driver was written using a display 128x48 - converting it
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* to a line width of 80 makes it very difficult to support. In
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* particular functions have been broken down into sub functions
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* and the original meaningful names have been shortened into
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* cryptic ones.
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* The problem is that executing a fragment of code subject to
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* two conditions means an indentation of 24, thus leaving only
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* 56 characters for a C statement. And that is quite ridiculous!
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*
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* Data types: data passed to/from the VUB300 is fixed to a number of
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* bits and driver data fields reflect that limit by using
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* u8, u16, u32
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/kref.h>
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#include <linux/uaccess.h>
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#include <linux/usb.h>
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#include <linux/mutex.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/card.h>
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#include <linux/mmc/sdio_func.h>
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#include <linux/mmc/sdio_ids.h>
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#include <linux/workqueue.h>
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#include <linux/ctype.h>
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#include <linux/firmware.h>
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#include <linux/scatterlist.h>
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struct host_controller_info {
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u8 info_size;
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u16 firmware_version;
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u8 number_of_ports;
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} __packed;
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#define FIRMWARE_BLOCK_BOUNDARY 1024
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struct sd_command_header {
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u8 header_size;
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u8 header_type;
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u8 port_number;
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u8 command_type; /* Bit7 - Rd/Wr */
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u8 command_index;
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u8 transfer_size[4]; /* ReadSize + ReadSize */
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u8 response_type;
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u8 arguments[4];
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u8 block_count[2];
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u8 block_size[2];
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u8 block_boundary[2];
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u8 reserved[44]; /* to pad out to 64 bytes */
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} __packed;
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struct sd_irqpoll_header {
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u8 header_size;
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u8 header_type;
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u8 port_number;
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u8 command_type; /* Bit7 - Rd/Wr */
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u8 padding[16]; /* don't ask why !! */
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u8 poll_timeout_msb;
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u8 poll_timeout_lsb;
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u8 reserved[42]; /* to pad out to 64 bytes */
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} __packed;
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struct sd_common_header {
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u8 header_size;
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u8 header_type;
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u8 port_number;
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} __packed;
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struct sd_response_header {
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u8 header_size;
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u8 header_type;
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u8 port_number;
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u8 command_type;
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u8 command_index;
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u8 command_response[0];
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} __packed;
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struct sd_status_header {
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u8 header_size;
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u8 header_type;
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u8 port_number;
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u16 port_flags;
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u32 sdio_clock;
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u16 host_header_size;
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u16 func_header_size;
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u16 ctrl_header_size;
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} __packed;
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struct sd_error_header {
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u8 header_size;
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u8 header_type;
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u8 port_number;
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u8 error_code;
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} __packed;
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struct sd_interrupt_header {
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u8 header_size;
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u8 header_type;
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u8 port_number;
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} __packed;
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struct offload_registers_access {
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u8 command_byte[4];
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u8 Respond_Byte[4];
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} __packed;
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#define INTERRUPT_REGISTER_ACCESSES 15
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struct sd_offloaded_interrupt {
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u8 header_size;
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u8 header_type;
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u8 port_number;
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struct offload_registers_access reg[INTERRUPT_REGISTER_ACCESSES];
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} __packed;
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struct sd_register_header {
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u8 header_size;
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u8 header_type;
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u8 port_number;
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u8 command_type;
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u8 command_index;
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u8 command_response[6];
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} __packed;
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#define PIGGYBACK_REGISTER_ACCESSES 14
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struct sd_offloaded_piggyback {
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struct sd_register_header sdio;
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struct offload_registers_access reg[PIGGYBACK_REGISTER_ACCESSES];
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} __packed;
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union sd_response {
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struct sd_common_header common;
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struct sd_status_header status;
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struct sd_error_header error;
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struct sd_interrupt_header interrupt;
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struct sd_response_header response;
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struct sd_offloaded_interrupt irq;
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struct sd_offloaded_piggyback pig;
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} __packed;
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union sd_command {
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struct sd_command_header head;
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struct sd_irqpoll_header poll;
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} __packed;
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enum SD_RESPONSE_TYPE {
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SDRT_UNSPECIFIED = 0,
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SDRT_NONE,
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SDRT_1,
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SDRT_1B,
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SDRT_2,
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SDRT_3,
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SDRT_4,
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SDRT_5,
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SDRT_5B,
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SDRT_6,
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SDRT_7,
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};
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#define RESPONSE_INTERRUPT 0x01
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#define RESPONSE_ERROR 0x02
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#define RESPONSE_STATUS 0x03
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#define RESPONSE_IRQ_DISABLED 0x05
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#define RESPONSE_IRQ_ENABLED 0x06
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#define RESPONSE_PIGGYBACKED 0x07
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#define RESPONSE_NO_INTERRUPT 0x08
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#define RESPONSE_PIG_DISABLED 0x09
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#define RESPONSE_PIG_ENABLED 0x0A
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#define SD_ERROR_1BIT_TIMEOUT 0x01
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#define SD_ERROR_4BIT_TIMEOUT 0x02
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#define SD_ERROR_1BIT_CRC_WRONG 0x03
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#define SD_ERROR_4BIT_CRC_WRONG 0x04
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#define SD_ERROR_1BIT_CRC_ERROR 0x05
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#define SD_ERROR_4BIT_CRC_ERROR 0x06
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#define SD_ERROR_NO_CMD_ENDBIT 0x07
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#define SD_ERROR_NO_1BIT_DATEND 0x08
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#define SD_ERROR_NO_4BIT_DATEND 0x09
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#define SD_ERROR_1BIT_UNEXPECTED_TIMEOUT 0x0A
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#define SD_ERROR_4BIT_UNEXPECTED_TIMEOUT 0x0B
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#define SD_ERROR_ILLEGAL_COMMAND 0x0C
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#define SD_ERROR_NO_DEVICE 0x0D
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#define SD_ERROR_TRANSFER_LENGTH 0x0E
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#define SD_ERROR_1BIT_DATA_TIMEOUT 0x0F
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#define SD_ERROR_4BIT_DATA_TIMEOUT 0x10
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#define SD_ERROR_ILLEGAL_STATE 0x11
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#define SD_ERROR_UNKNOWN_ERROR 0x12
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#define SD_ERROR_RESERVED_ERROR 0x13
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#define SD_ERROR_INVALID_FUNCTION 0x14
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#define SD_ERROR_OUT_OF_RANGE 0x15
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#define SD_ERROR_STAT_CMD 0x16
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#define SD_ERROR_STAT_DATA 0x17
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#define SD_ERROR_STAT_CMD_TIMEOUT 0x18
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#define SD_ERROR_SDCRDY_STUCK 0x19
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#define SD_ERROR_UNHANDLED 0x1A
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#define SD_ERROR_OVERRUN 0x1B
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#define SD_ERROR_PIO_TIMEOUT 0x1C
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#define FUN(c) (0x000007 & (c->arg>>28))
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#define REG(c) (0x01FFFF & (c->arg>>9))
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static int limit_speed_to_24_MHz;
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module_param(limit_speed_to_24_MHz, bool, 0644);
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MODULE_PARM_DESC(limit_speed_to_24_MHz, "Limit Max SDIO Clock Speed to 24 MHz");
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static int pad_input_to_usb_pkt;
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module_param(pad_input_to_usb_pkt, bool, 0644);
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MODULE_PARM_DESC(pad_input_to_usb_pkt,
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"Pad USB data input transfers to whole USB Packet");
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static int disable_offload_processing;
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module_param(disable_offload_processing, bool, 0644);
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MODULE_PARM_DESC(disable_offload_processing, "Disable Offload Processing");
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static int force_1_bit_data_xfers;
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module_param(force_1_bit_data_xfers, bool, 0644);
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MODULE_PARM_DESC(force_1_bit_data_xfers,
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"Force SDIO Data Transfers to 1-bit Mode");
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static int force_polling_for_irqs;
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module_param(force_polling_for_irqs, bool, 0644);
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MODULE_PARM_DESC(force_polling_for_irqs, "Force Polling for SDIO interrupts");
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static int firmware_irqpoll_timeout = 1024;
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module_param(firmware_irqpoll_timeout, int, 0644);
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MODULE_PARM_DESC(firmware_irqpoll_timeout, "VUB300 firmware irqpoll timeout");
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static int force_max_req_size = 128;
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module_param(force_max_req_size, int, 0644);
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MODULE_PARM_DESC(force_max_req_size, "set max request size in kBytes");
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#ifdef SMSC_DEVELOPMENT_BOARD
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static int firmware_rom_wait_states = 0x04;
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#else
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static int firmware_rom_wait_states = 0x1C;
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#endif
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module_param(firmware_rom_wait_states, bool, 0644);
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MODULE_PARM_DESC(firmware_rom_wait_states,
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"ROM wait states byte=RRRIIEEE (Reserved Internal External)");
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#define ELAN_VENDOR_ID 0x2201
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#define VUB300_VENDOR_ID 0x0424
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#define VUB300_PRODUCT_ID 0x012C
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static struct usb_device_id vub300_table[] = {
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{USB_DEVICE(ELAN_VENDOR_ID, VUB300_PRODUCT_ID)},
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{USB_DEVICE(VUB300_VENDOR_ID, VUB300_PRODUCT_ID)},
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, vub300_table);
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static struct workqueue_struct *cmndworkqueue;
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static struct workqueue_struct *pollworkqueue;
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static struct workqueue_struct *deadworkqueue;
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static inline int interface_to_InterfaceNumber(struct usb_interface *interface)
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{
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if (!interface)
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return -1;
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if (!interface->cur_altsetting)
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return -1;
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return interface->cur_altsetting->desc.bInterfaceNumber;
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}
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struct sdio_register {
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unsigned func_num:3;
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unsigned sdio_reg:17;
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unsigned activate:1;
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unsigned prepared:1;
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unsigned regvalue:8;
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unsigned response:8;
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unsigned sparebit:26;
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};
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struct vub300_mmc_host {
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struct usb_device *udev;
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struct usb_interface *interface;
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struct kref kref;
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struct mutex cmd_mutex;
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struct mutex irq_mutex;
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char vub_name[3 + (9 * 8) + 4 + 1]; /* max of 7 sdio fn's */
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u8 cmnd_out_ep; /* EndPoint for commands */
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u8 cmnd_res_ep; /* EndPoint for responses */
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u8 data_out_ep; /* EndPoint for out data */
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u8 data_inp_ep; /* EndPoint for inp data */
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bool card_powered;
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bool card_present;
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bool read_only;
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bool large_usb_packets;
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bool app_spec; /* ApplicationSpecific */
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bool irq_enabled; /* by the MMC CORE */
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bool irq_disabled; /* in the firmware */
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unsigned bus_width:4;
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u8 total_offload_count;
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u8 dynamic_register_count;
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u8 resp_len;
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u32 datasize;
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int errors;
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int usb_transport_fail;
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int usb_timed_out;
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int irqs_queued;
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struct sdio_register sdio_register[16];
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struct offload_interrupt_function_register {
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#define MAXREGBITS 4
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#define MAXREGS (1<<MAXREGBITS)
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#define MAXREGMASK (MAXREGS-1)
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u8 offload_count;
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u32 offload_point;
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struct offload_registers_access reg[MAXREGS];
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} fn[8];
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u16 fbs[8]; /* Function Block Size */
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struct mmc_command *cmd;
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struct mmc_request *req;
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struct mmc_data *data;
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struct mmc_host *mmc;
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struct urb *urb;
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struct urb *command_out_urb;
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struct urb *command_res_urb;
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struct completion command_complete;
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struct completion irqpoll_complete;
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union sd_command cmnd;
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union sd_response resp;
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struct timer_list sg_transfer_timer;
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struct usb_sg_request sg_request;
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struct timer_list inactivity_timer;
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struct work_struct deadwork;
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struct work_struct cmndwork;
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struct delayed_work pollwork;
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struct host_controller_info hc_info;
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struct sd_status_header system_port_status;
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u8 padded_buffer[64];
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};
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#define kref_to_vub300_mmc_host(d) container_of(d, struct vub300_mmc_host, kref)
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#define SET_TRANSFER_PSEUDOCODE 21
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#define SET_INTERRUPT_PSEUDOCODE 20
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#define SET_FAILURE_MODE 18
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#define SET_ROM_WAIT_STATES 16
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#define SET_IRQ_ENABLE 13
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#define SET_CLOCK_SPEED 11
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#define SET_FUNCTION_BLOCK_SIZE 9
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#define SET_SD_DATA_MODE 6
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#define SET_SD_POWER 4
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#define ENTER_DFU_MODE 3
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#define GET_HC_INF0 1
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#define GET_SYSTEM_PORT_STATUS 0
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static void vub300_delete(struct kref *kref)
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{ /* kref callback - softirq */
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struct vub300_mmc_host *vub300 = kref_to_vub300_mmc_host(kref);
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struct mmc_host *mmc = vub300->mmc;
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usb_free_urb(vub300->command_out_urb);
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vub300->command_out_urb = NULL;
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usb_free_urb(vub300->command_res_urb);
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vub300->command_res_urb = NULL;
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usb_put_dev(vub300->udev);
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mmc_free_host(mmc);
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/*
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* and hence also frees vub300
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* which is contained at the end of struct mmc
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*/
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}
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static void vub300_queue_cmnd_work(struct vub300_mmc_host *vub300)
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{
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kref_get(&vub300->kref);
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if (queue_work(cmndworkqueue, &vub300->cmndwork)) {
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/*
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* then the cmndworkqueue was not previously
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* running and the above get ref is obvious
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* required and will be put when the thread
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* terminates by a specific call
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*/
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} else {
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/*
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* the cmndworkqueue was already running from
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* a previous invocation and thus to keep the
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* kref counts correct we must undo the get
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*/
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kref_put(&vub300->kref, vub300_delete);
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}
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}
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static void vub300_queue_poll_work(struct vub300_mmc_host *vub300, int delay)
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{
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kref_get(&vub300->kref);
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if (queue_delayed_work(pollworkqueue, &vub300->pollwork, delay)) {
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/*
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* then the pollworkqueue was not previously
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* running and the above get ref is obvious
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* required and will be put when the thread
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* terminates by a specific call
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*/
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} else {
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/*
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* the pollworkqueue was already running from
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* a previous invocation and thus to keep the
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* kref counts correct we must undo the get
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*/
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kref_put(&vub300->kref, vub300_delete);
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}
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}
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static void vub300_queue_dead_work(struct vub300_mmc_host *vub300)
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{
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kref_get(&vub300->kref);
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if (queue_work(deadworkqueue, &vub300->deadwork)) {
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/*
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* then the deadworkqueue was not previously
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* running and the above get ref is obvious
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* required and will be put when the thread
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* terminates by a specific call
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*/
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} else {
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/*
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* the deadworkqueue was already running from
|
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* a previous invocation and thus to keep the
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* kref counts correct we must undo the get
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*/
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kref_put(&vub300->kref, vub300_delete);
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}
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}
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static void irqpoll_res_completed(struct urb *urb)
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{ /* urb completion handler - hardirq */
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struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context;
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if (urb->status)
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vub300->usb_transport_fail = urb->status;
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complete(&vub300->irqpoll_complete);
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}
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static void irqpoll_out_completed(struct urb *urb)
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{ /* urb completion handler - hardirq */
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struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context;
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if (urb->status) {
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vub300->usb_transport_fail = urb->status;
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complete(&vub300->irqpoll_complete);
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return;
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} else {
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int ret;
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unsigned int pipe =
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usb_rcvbulkpipe(vub300->udev, vub300->cmnd_res_ep);
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usb_fill_bulk_urb(vub300->command_res_urb, vub300->udev, pipe,
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&vub300->resp, sizeof(vub300->resp),
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irqpoll_res_completed, vub300);
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vub300->command_res_urb->actual_length = 0;
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ret = usb_submit_urb(vub300->command_res_urb, GFP_ATOMIC);
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if (ret) {
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vub300->usb_transport_fail = ret;
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complete(&vub300->irqpoll_complete);
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}
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return;
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}
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}
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static void send_irqpoll(struct vub300_mmc_host *vub300)
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{
|
|
/* cmd_mutex is held by vub300_pollwork_thread */
|
|
int retval;
|
|
int timeout = 0xFFFF & (0x0001FFFF - firmware_irqpoll_timeout);
|
|
vub300->cmnd.poll.header_size = 22;
|
|
vub300->cmnd.poll.header_type = 1;
|
|
vub300->cmnd.poll.port_number = 0;
|
|
vub300->cmnd.poll.command_type = 2;
|
|
vub300->cmnd.poll.poll_timeout_lsb = 0xFF & (unsigned)timeout;
|
|
vub300->cmnd.poll.poll_timeout_msb = 0xFF & (unsigned)(timeout >> 8);
|
|
usb_fill_bulk_urb(vub300->command_out_urb, vub300->udev,
|
|
usb_sndbulkpipe(vub300->udev, vub300->cmnd_out_ep)
|
|
, &vub300->cmnd, sizeof(vub300->cmnd)
|
|
, irqpoll_out_completed, vub300);
|
|
retval = usb_submit_urb(vub300->command_out_urb, GFP_KERNEL);
|
|
if (0 > retval) {
|
|
vub300->usb_transport_fail = retval;
|
|
vub300_queue_poll_work(vub300, 1);
|
|
complete(&vub300->irqpoll_complete);
|
|
return;
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void new_system_port_status(struct vub300_mmc_host *vub300)
|
|
{
|
|
int old_card_present = vub300->card_present;
|
|
int new_card_present =
|
|
(0x0001 & vub300->system_port_status.port_flags) ? 1 : 0;
|
|
vub300->read_only =
|
|
(0x0010 & vub300->system_port_status.port_flags) ? 1 : 0;
|
|
if (new_card_present && !old_card_present) {
|
|
dev_info(&vub300->udev->dev, "card just inserted\n");
|
|
vub300->card_present = 1;
|
|
vub300->bus_width = 0;
|
|
if (disable_offload_processing)
|
|
strncpy(vub300->vub_name, "EMPTY Processing Disabled",
|
|
sizeof(vub300->vub_name));
|
|
else
|
|
vub300->vub_name[0] = 0;
|
|
mmc_detect_change(vub300->mmc, 1);
|
|
} else if (!new_card_present && old_card_present) {
|
|
dev_info(&vub300->udev->dev, "card just ejected\n");
|
|
vub300->card_present = 0;
|
|
mmc_detect_change(vub300->mmc, 0);
|
|
} else {
|
|
/* no change */
|
|
}
|
|
}
|
|
|
|
static void __add_offloaded_reg_to_fifo(struct vub300_mmc_host *vub300,
|
|
struct offload_registers_access
|
|
*register_access, u8 func)
|
|
{
|
|
u8 r = vub300->fn[func].offload_point + vub300->fn[func].offload_count;
|
|
memcpy(&vub300->fn[func].reg[MAXREGMASK & r], register_access,
|
|
sizeof(struct offload_registers_access));
|
|
vub300->fn[func].offload_count += 1;
|
|
vub300->total_offload_count += 1;
|
|
}
|
|
|
|
static void add_offloaded_reg(struct vub300_mmc_host *vub300,
|
|
struct offload_registers_access *register_access)
|
|
{
|
|
u32 Register = ((0x03 & register_access->command_byte[0]) << 15)
|
|
| ((0xFF & register_access->command_byte[1]) << 7)
|
|
| ((0xFE & register_access->command_byte[2]) >> 1);
|
|
u8 func = ((0x70 & register_access->command_byte[0]) >> 4);
|
|
u8 regs = vub300->dynamic_register_count;
|
|
u8 i = 0;
|
|
while (0 < regs-- && 1 == vub300->sdio_register[i].activate) {
|
|
if (vub300->sdio_register[i].func_num == func &&
|
|
vub300->sdio_register[i].sdio_reg == Register) {
|
|
if (vub300->sdio_register[i].prepared == 0)
|
|
vub300->sdio_register[i].prepared = 1;
|
|
vub300->sdio_register[i].response =
|
|
register_access->Respond_Byte[2];
|
|
vub300->sdio_register[i].regvalue =
|
|
register_access->Respond_Byte[3];
|
|
return;
|
|
} else {
|
|
i += 1;
|
|
continue;
|
|
}
|
|
};
|
|
__add_offloaded_reg_to_fifo(vub300, register_access, func);
|
|
}
|
|
|
|
static void check_vub300_port_status(struct vub300_mmc_host *vub300)
|
|
{
|
|
/*
|
|
* cmd_mutex is held by vub300_pollwork_thread,
|
|
* vub300_deadwork_thread or vub300_cmndwork_thread
|
|
*/
|
|
int retval;
|
|
retval =
|
|
usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0),
|
|
GET_SYSTEM_PORT_STATUS,
|
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0x0000, 0x0000, &vub300->system_port_status,
|
|
sizeof(vub300->system_port_status), HZ);
|
|
if (sizeof(vub300->system_port_status) == retval)
|
|
new_system_port_status(vub300);
|
|
}
|
|
|
|
static void __vub300_irqpoll_response(struct vub300_mmc_host *vub300)
|
|
{
|
|
/* cmd_mutex is held by vub300_pollwork_thread */
|
|
if (vub300->command_res_urb->actual_length == 0)
|
|
return;
|
|
|
|
switch (vub300->resp.common.header_type) {
|
|
case RESPONSE_INTERRUPT:
|
|
mutex_lock(&vub300->irq_mutex);
|
|
if (vub300->irq_enabled)
|
|
mmc_signal_sdio_irq(vub300->mmc);
|
|
else
|
|
vub300->irqs_queued += 1;
|
|
vub300->irq_disabled = 1;
|
|
mutex_unlock(&vub300->irq_mutex);
|
|
break;
|
|
case RESPONSE_ERROR:
|
|
if (vub300->resp.error.error_code == SD_ERROR_NO_DEVICE)
|
|
check_vub300_port_status(vub300);
|
|
break;
|
|
case RESPONSE_STATUS:
|
|
vub300->system_port_status = vub300->resp.status;
|
|
new_system_port_status(vub300);
|
|
if (!vub300->card_present)
|
|
vub300_queue_poll_work(vub300, HZ / 5);
|
|
break;
|
|
case RESPONSE_IRQ_DISABLED:
|
|
{
|
|
int offloaded_data_length = vub300->resp.common.header_size - 3;
|
|
int register_count = offloaded_data_length >> 3;
|
|
int ri = 0;
|
|
while (register_count--) {
|
|
add_offloaded_reg(vub300, &vub300->resp.irq.reg[ri]);
|
|
ri += 1;
|
|
}
|
|
mutex_lock(&vub300->irq_mutex);
|
|
if (vub300->irq_enabled)
|
|
mmc_signal_sdio_irq(vub300->mmc);
|
|
else
|
|
vub300->irqs_queued += 1;
|
|
vub300->irq_disabled = 1;
|
|
mutex_unlock(&vub300->irq_mutex);
|
|
break;
|
|
}
|
|
case RESPONSE_IRQ_ENABLED:
|
|
{
|
|
int offloaded_data_length = vub300->resp.common.header_size - 3;
|
|
int register_count = offloaded_data_length >> 3;
|
|
int ri = 0;
|
|
while (register_count--) {
|
|
add_offloaded_reg(vub300, &vub300->resp.irq.reg[ri]);
|
|
ri += 1;
|
|
}
|
|
mutex_lock(&vub300->irq_mutex);
|
|
if (vub300->irq_enabled)
|
|
mmc_signal_sdio_irq(vub300->mmc);
|
|
else if (vub300->irqs_queued)
|
|
vub300->irqs_queued += 1;
|
|
else
|
|
vub300->irqs_queued += 1;
|
|
vub300->irq_disabled = 0;
|
|
mutex_unlock(&vub300->irq_mutex);
|
|
break;
|
|
}
|
|
case RESPONSE_NO_INTERRUPT:
|
|
vub300_queue_poll_work(vub300, 1);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void __do_poll(struct vub300_mmc_host *vub300)
|
|
{
|
|
/* cmd_mutex is held by vub300_pollwork_thread */
|
|
long commretval;
|
|
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
|
|
init_completion(&vub300->irqpoll_complete);
|
|
send_irqpoll(vub300);
|
|
commretval = wait_for_completion_timeout(&vub300->irqpoll_complete,
|
|
msecs_to_jiffies(500));
|
|
if (vub300->usb_transport_fail) {
|
|
/* no need to do anything */
|
|
} else if (commretval == 0) {
|
|
vub300->usb_timed_out = 1;
|
|
usb_kill_urb(vub300->command_out_urb);
|
|
usb_kill_urb(vub300->command_res_urb);
|
|
} else if (commretval < 0) {
|
|
vub300_queue_poll_work(vub300, 1);
|
|
} else { /* commretval > 0 */
|
|
__vub300_irqpoll_response(vub300);
|
|
}
|
|
}
|
|
|
|
/* this thread runs only when the driver
|
|
* is trying to poll the device for an IRQ
|
|
*/
|
|
static void vub300_pollwork_thread(struct work_struct *work)
|
|
{ /* NOT irq */
|
|
struct vub300_mmc_host *vub300 = container_of(work,
|
|
struct vub300_mmc_host, pollwork.work);
|
|
if (!vub300->interface) {
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
return;
|
|
}
|
|
mutex_lock(&vub300->cmd_mutex);
|
|
if (vub300->cmd) {
|
|
vub300_queue_poll_work(vub300, 1);
|
|
} else if (!vub300->card_present) {
|
|
/* no need to do anything */
|
|
} else { /* vub300->card_present */
|
|
mutex_lock(&vub300->irq_mutex);
|
|
if (!vub300->irq_enabled) {
|
|
mutex_unlock(&vub300->irq_mutex);
|
|
} else if (vub300->irqs_queued) {
|
|
vub300->irqs_queued -= 1;
|
|
mmc_signal_sdio_irq(vub300->mmc);
|
|
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
|
|
mutex_unlock(&vub300->irq_mutex);
|
|
} else { /* NOT vub300->irqs_queued */
|
|
mutex_unlock(&vub300->irq_mutex);
|
|
__do_poll(vub300);
|
|
}
|
|
}
|
|
mutex_unlock(&vub300->cmd_mutex);
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
}
|
|
|
|
static void vub300_deadwork_thread(struct work_struct *work)
|
|
{ /* NOT irq */
|
|
struct vub300_mmc_host *vub300 =
|
|
container_of(work, struct vub300_mmc_host, deadwork);
|
|
if (!vub300->interface) {
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
return;
|
|
}
|
|
mutex_lock(&vub300->cmd_mutex);
|
|
if (vub300->cmd) {
|
|
/*
|
|
* a command got in as the inactivity
|
|
* timer expired - so we just let the
|
|
* processing of the command show if
|
|
* the device is dead
|
|
*/
|
|
} else if (vub300->card_present) {
|
|
check_vub300_port_status(vub300);
|
|
} else if (vub300->mmc && vub300->mmc->card &&
|
|
mmc_card_present(vub300->mmc->card)) {
|
|
/*
|
|
* the MMC core must not have responded
|
|
* to the previous indication - lets
|
|
* hope that it eventually does so we
|
|
* will just ignore this for now
|
|
*/
|
|
} else {
|
|
check_vub300_port_status(vub300);
|
|
}
|
|
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
|
|
mutex_unlock(&vub300->cmd_mutex);
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
}
|
|
|
|
static void vub300_inactivity_timer_expired(unsigned long data)
|
|
{ /* softirq */
|
|
struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)data;
|
|
if (!vub300->interface) {
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
} else if (vub300->cmd) {
|
|
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
|
|
} else {
|
|
vub300_queue_dead_work(vub300);
|
|
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
|
|
}
|
|
}
|
|
|
|
static int vub300_response_error(u8 error_code)
|
|
{
|
|
switch (error_code) {
|
|
case SD_ERROR_PIO_TIMEOUT:
|
|
case SD_ERROR_1BIT_TIMEOUT:
|
|
case SD_ERROR_4BIT_TIMEOUT:
|
|
return -ETIMEDOUT;
|
|
case SD_ERROR_STAT_DATA:
|
|
case SD_ERROR_OVERRUN:
|
|
case SD_ERROR_STAT_CMD:
|
|
case SD_ERROR_STAT_CMD_TIMEOUT:
|
|
case SD_ERROR_SDCRDY_STUCK:
|
|
case SD_ERROR_UNHANDLED:
|
|
case SD_ERROR_1BIT_CRC_WRONG:
|
|
case SD_ERROR_4BIT_CRC_WRONG:
|
|
case SD_ERROR_1BIT_CRC_ERROR:
|
|
case SD_ERROR_4BIT_CRC_ERROR:
|
|
case SD_ERROR_NO_CMD_ENDBIT:
|
|
case SD_ERROR_NO_1BIT_DATEND:
|
|
case SD_ERROR_NO_4BIT_DATEND:
|
|
case SD_ERROR_1BIT_DATA_TIMEOUT:
|
|
case SD_ERROR_4BIT_DATA_TIMEOUT:
|
|
case SD_ERROR_1BIT_UNEXPECTED_TIMEOUT:
|
|
case SD_ERROR_4BIT_UNEXPECTED_TIMEOUT:
|
|
return -EILSEQ;
|
|
case 33:
|
|
return -EILSEQ;
|
|
case SD_ERROR_ILLEGAL_COMMAND:
|
|
return -EINVAL;
|
|
case SD_ERROR_NO_DEVICE:
|
|
return -ENOMEDIUM;
|
|
default:
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
static void command_res_completed(struct urb *urb)
|
|
{ /* urb completion handler - hardirq */
|
|
struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context;
|
|
if (urb->status) {
|
|
/* we have to let the initiator handle the error */
|
|
} else if (vub300->command_res_urb->actual_length == 0) {
|
|
/*
|
|
* we have seen this happen once or twice and
|
|
* we suspect a buggy USB host controller
|
|
*/
|
|
} else if (!vub300->data) {
|
|
/* this means that the command (typically CMD52) suceeded */
|
|
} else if (vub300->resp.common.header_type != 0x02) {
|
|
/*
|
|
* this is an error response from the VUB300 chip
|
|
* and we let the initiator handle it
|
|
*/
|
|
} else if (vub300->urb) {
|
|
vub300->cmd->error =
|
|
vub300_response_error(vub300->resp.error.error_code);
|
|
usb_unlink_urb(vub300->urb);
|
|
} else {
|
|
vub300->cmd->error =
|
|
vub300_response_error(vub300->resp.error.error_code);
|
|
usb_sg_cancel(&vub300->sg_request);
|
|
}
|
|
complete(&vub300->command_complete); /* got_response_in */
|
|
}
|
|
|
|
static void command_out_completed(struct urb *urb)
|
|
{ /* urb completion handler - hardirq */
|
|
struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)urb->context;
|
|
if (urb->status) {
|
|
complete(&vub300->command_complete);
|
|
} else {
|
|
int ret;
|
|
unsigned int pipe =
|
|
usb_rcvbulkpipe(vub300->udev, vub300->cmnd_res_ep);
|
|
usb_fill_bulk_urb(vub300->command_res_urb, vub300->udev, pipe,
|
|
&vub300->resp, sizeof(vub300->resp),
|
|
command_res_completed, vub300);
|
|
vub300->command_res_urb->actual_length = 0;
|
|
ret = usb_submit_urb(vub300->command_res_urb, GFP_ATOMIC);
|
|
if (ret == 0) {
|
|
/*
|
|
* the urb completion handler will call
|
|
* our completion handler
|
|
*/
|
|
} else {
|
|
/*
|
|
* and thus we only call it directly
|
|
* when it will not be called
|
|
*/
|
|
complete(&vub300->command_complete);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* the STUFF bits are masked out for the comparisons
|
|
*/
|
|
static void snoop_block_size_and_bus_width(struct vub300_mmc_host *vub300,
|
|
u32 cmd_arg)
|
|
{
|
|
if ((0xFBFFFE00 & cmd_arg) == 0x80022200)
|
|
vub300->fbs[1] = (cmd_arg << 8) | (0x00FF & vub300->fbs[1]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x80022000)
|
|
vub300->fbs[1] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[1]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x80042200)
|
|
vub300->fbs[2] = (cmd_arg << 8) | (0x00FF & vub300->fbs[2]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x80042000)
|
|
vub300->fbs[2] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[2]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x80062200)
|
|
vub300->fbs[3] = (cmd_arg << 8) | (0x00FF & vub300->fbs[3]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x80062000)
|
|
vub300->fbs[3] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[3]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x80082200)
|
|
vub300->fbs[4] = (cmd_arg << 8) | (0x00FF & vub300->fbs[4]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x80082000)
|
|
vub300->fbs[4] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[4]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x800A2200)
|
|
vub300->fbs[5] = (cmd_arg << 8) | (0x00FF & vub300->fbs[5]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x800A2000)
|
|
vub300->fbs[5] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[5]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x800C2200)
|
|
vub300->fbs[6] = (cmd_arg << 8) | (0x00FF & vub300->fbs[6]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x800C2000)
|
|
vub300->fbs[6] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[6]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x800E2200)
|
|
vub300->fbs[7] = (cmd_arg << 8) | (0x00FF & vub300->fbs[7]);
|
|
else if ((0xFBFFFE00 & cmd_arg) == 0x800E2000)
|
|
vub300->fbs[7] = (0xFF & cmd_arg) | (0xFF00 & vub300->fbs[7]);
|
|
else if ((0xFBFFFE03 & cmd_arg) == 0x80000E00)
|
|
vub300->bus_width = 1;
|
|
else if ((0xFBFFFE03 & cmd_arg) == 0x80000E02)
|
|
vub300->bus_width = 4;
|
|
}
|
|
|
|
static void send_command(struct vub300_mmc_host *vub300)
|
|
{
|
|
/* cmd_mutex is held by vub300_cmndwork_thread */
|
|
struct mmc_command *cmd = vub300->cmd;
|
|
struct mmc_data *data = vub300->data;
|
|
int retval;
|
|
int i;
|
|
u8 response_type;
|
|
if (vub300->app_spec) {
|
|
switch (cmd->opcode) {
|
|
case 6:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
if (0x00000000 == (0x00000003 & cmd->arg))
|
|
vub300->bus_width = 1;
|
|
else if (0x00000002 == (0x00000003 & cmd->arg))
|
|
vub300->bus_width = 4;
|
|
else
|
|
dev_err(&vub300->udev->dev,
|
|
"unexpected ACMD6 bus_width=%d\n",
|
|
0x00000003 & cmd->arg);
|
|
break;
|
|
case 13:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 22:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 23:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 41:
|
|
response_type = SDRT_3;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 42:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 51:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 55:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
default:
|
|
vub300->resp_len = 0;
|
|
cmd->error = -EINVAL;
|
|
complete(&vub300->command_complete);
|
|
return;
|
|
}
|
|
vub300->app_spec = 0;
|
|
} else {
|
|
switch (cmd->opcode) {
|
|
case 0:
|
|
response_type = SDRT_NONE;
|
|
vub300->resp_len = 0;
|
|
break;
|
|
case 1:
|
|
response_type = SDRT_3;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 2:
|
|
response_type = SDRT_2;
|
|
vub300->resp_len = 17;
|
|
break;
|
|
case 3:
|
|
response_type = SDRT_6;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 4:
|
|
response_type = SDRT_NONE;
|
|
vub300->resp_len = 0;
|
|
break;
|
|
case 5:
|
|
response_type = SDRT_4;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 6:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 7:
|
|
response_type = SDRT_1B;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 8:
|
|
response_type = SDRT_7;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 9:
|
|
response_type = SDRT_2;
|
|
vub300->resp_len = 17;
|
|
break;
|
|
case 10:
|
|
response_type = SDRT_2;
|
|
vub300->resp_len = 17;
|
|
break;
|
|
case 12:
|
|
response_type = SDRT_1B;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 13:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 15:
|
|
response_type = SDRT_NONE;
|
|
vub300->resp_len = 0;
|
|
break;
|
|
case 16:
|
|
for (i = 0; i < ARRAY_SIZE(vub300->fbs); i++)
|
|
vub300->fbs[i] = 0xFFFF & cmd->arg;
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 17:
|
|
case 18:
|
|
case 24:
|
|
case 25:
|
|
case 27:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 28:
|
|
case 29:
|
|
response_type = SDRT_1B;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 30:
|
|
case 32:
|
|
case 33:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 38:
|
|
response_type = SDRT_1B;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 42:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 52:
|
|
response_type = SDRT_5;
|
|
vub300->resp_len = 6;
|
|
snoop_block_size_and_bus_width(vub300, cmd->arg);
|
|
break;
|
|
case 53:
|
|
response_type = SDRT_5;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
case 55:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
vub300->app_spec = 1;
|
|
break;
|
|
case 56:
|
|
response_type = SDRT_1;
|
|
vub300->resp_len = 6;
|
|
break;
|
|
default:
|
|
vub300->resp_len = 0;
|
|
cmd->error = -EINVAL;
|
|
complete(&vub300->command_complete);
|
|
return;
|
|
}
|
|
}
|
|
/*
|
|
* it is a shame that we can not use "sizeof(struct sd_command_header)"
|
|
* this is because the packet _must_ be padded to 64 bytes
|
|
*/
|
|
vub300->cmnd.head.header_size = 20;
|
|
vub300->cmnd.head.header_type = 0x00;
|
|
vub300->cmnd.head.port_number = 0; /* "0" means port 1 */
|
|
vub300->cmnd.head.command_type = 0x00; /* standard read command */
|
|
vub300->cmnd.head.response_type = response_type;
|
|
vub300->cmnd.head.command_index = cmd->opcode;
|
|
vub300->cmnd.head.arguments[0] = cmd->arg >> 24;
|
|
vub300->cmnd.head.arguments[1] = cmd->arg >> 16;
|
|
vub300->cmnd.head.arguments[2] = cmd->arg >> 8;
|
|
vub300->cmnd.head.arguments[3] = cmd->arg >> 0;
|
|
if (cmd->opcode == 52) {
|
|
int fn = 0x7 & (cmd->arg >> 28);
|
|
vub300->cmnd.head.block_count[0] = 0;
|
|
vub300->cmnd.head.block_count[1] = 0;
|
|
vub300->cmnd.head.block_size[0] = (vub300->fbs[fn] >> 8) & 0xFF;
|
|
vub300->cmnd.head.block_size[1] = (vub300->fbs[fn] >> 0) & 0xFF;
|
|
vub300->cmnd.head.command_type = 0x00;
|
|
vub300->cmnd.head.transfer_size[0] = 0;
|
|
vub300->cmnd.head.transfer_size[1] = 0;
|
|
vub300->cmnd.head.transfer_size[2] = 0;
|
|
vub300->cmnd.head.transfer_size[3] = 0;
|
|
} else if (!data) {
|
|
vub300->cmnd.head.block_count[0] = 0;
|
|
vub300->cmnd.head.block_count[1] = 0;
|
|
vub300->cmnd.head.block_size[0] = (vub300->fbs[0] >> 8) & 0xFF;
|
|
vub300->cmnd.head.block_size[1] = (vub300->fbs[0] >> 0) & 0xFF;
|
|
vub300->cmnd.head.command_type = 0x00;
|
|
vub300->cmnd.head.transfer_size[0] = 0;
|
|
vub300->cmnd.head.transfer_size[1] = 0;
|
|
vub300->cmnd.head.transfer_size[2] = 0;
|
|
vub300->cmnd.head.transfer_size[3] = 0;
|
|
} else if (cmd->opcode == 53) {
|
|
int fn = 0x7 & (cmd->arg >> 28);
|
|
if (0x08 & vub300->cmnd.head.arguments[0]) { /* BLOCK MODE */
|
|
vub300->cmnd.head.block_count[0] =
|
|
(data->blocks >> 8) & 0xFF;
|
|
vub300->cmnd.head.block_count[1] =
|
|
(data->blocks >> 0) & 0xFF;
|
|
vub300->cmnd.head.block_size[0] =
|
|
(data->blksz >> 8) & 0xFF;
|
|
vub300->cmnd.head.block_size[1] =
|
|
(data->blksz >> 0) & 0xFF;
|
|
} else { /* BYTE MODE */
|
|
vub300->cmnd.head.block_count[0] = 0;
|
|
vub300->cmnd.head.block_count[1] = 0;
|
|
vub300->cmnd.head.block_size[0] =
|
|
(vub300->datasize >> 8) & 0xFF;
|
|
vub300->cmnd.head.block_size[1] =
|
|
(vub300->datasize >> 0) & 0xFF;
|
|
}
|
|
vub300->cmnd.head.command_type =
|
|
(MMC_DATA_READ & data->flags) ? 0x00 : 0x80;
|
|
vub300->cmnd.head.transfer_size[0] =
|
|
(vub300->datasize >> 24) & 0xFF;
|
|
vub300->cmnd.head.transfer_size[1] =
|
|
(vub300->datasize >> 16) & 0xFF;
|
|
vub300->cmnd.head.transfer_size[2] =
|
|
(vub300->datasize >> 8) & 0xFF;
|
|
vub300->cmnd.head.transfer_size[3] =
|
|
(vub300->datasize >> 0) & 0xFF;
|
|
if (vub300->datasize < vub300->fbs[fn]) {
|
|
vub300->cmnd.head.block_count[0] = 0;
|
|
vub300->cmnd.head.block_count[1] = 0;
|
|
}
|
|
} else {
|
|
vub300->cmnd.head.block_count[0] = (data->blocks >> 8) & 0xFF;
|
|
vub300->cmnd.head.block_count[1] = (data->blocks >> 0) & 0xFF;
|
|
vub300->cmnd.head.block_size[0] = (data->blksz >> 8) & 0xFF;
|
|
vub300->cmnd.head.block_size[1] = (data->blksz >> 0) & 0xFF;
|
|
vub300->cmnd.head.command_type =
|
|
(MMC_DATA_READ & data->flags) ? 0x00 : 0x80;
|
|
vub300->cmnd.head.transfer_size[0] =
|
|
(vub300->datasize >> 24) & 0xFF;
|
|
vub300->cmnd.head.transfer_size[1] =
|
|
(vub300->datasize >> 16) & 0xFF;
|
|
vub300->cmnd.head.transfer_size[2] =
|
|
(vub300->datasize >> 8) & 0xFF;
|
|
vub300->cmnd.head.transfer_size[3] =
|
|
(vub300->datasize >> 0) & 0xFF;
|
|
if (vub300->datasize < vub300->fbs[0]) {
|
|
vub300->cmnd.head.block_count[0] = 0;
|
|
vub300->cmnd.head.block_count[1] = 0;
|
|
}
|
|
}
|
|
if (vub300->cmnd.head.block_size[0] || vub300->cmnd.head.block_size[1]) {
|
|
u16 block_size = vub300->cmnd.head.block_size[1] |
|
|
(vub300->cmnd.head.block_size[0] << 8);
|
|
u16 block_boundary = FIRMWARE_BLOCK_BOUNDARY -
|
|
(FIRMWARE_BLOCK_BOUNDARY % block_size);
|
|
vub300->cmnd.head.block_boundary[0] =
|
|
(block_boundary >> 8) & 0xFF;
|
|
vub300->cmnd.head.block_boundary[1] =
|
|
(block_boundary >> 0) & 0xFF;
|
|
} else {
|
|
vub300->cmnd.head.block_boundary[0] = 0;
|
|
vub300->cmnd.head.block_boundary[1] = 0;
|
|
}
|
|
usb_fill_bulk_urb(vub300->command_out_urb, vub300->udev,
|
|
usb_sndbulkpipe(vub300->udev, vub300->cmnd_out_ep),
|
|
&vub300->cmnd, sizeof(vub300->cmnd),
|
|
command_out_completed, vub300);
|
|
retval = usb_submit_urb(vub300->command_out_urb, GFP_KERNEL);
|
|
if (retval < 0) {
|
|
cmd->error = retval;
|
|
complete(&vub300->command_complete);
|
|
return;
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* timer callback runs in atomic mode
|
|
* so it cannot call usb_kill_urb()
|
|
*/
|
|
static void vub300_sg_timed_out(unsigned long data)
|
|
{
|
|
struct vub300_mmc_host *vub300 = (struct vub300_mmc_host *)data;
|
|
vub300->usb_timed_out = 1;
|
|
usb_sg_cancel(&vub300->sg_request);
|
|
usb_unlink_urb(vub300->command_out_urb);
|
|
usb_unlink_urb(vub300->command_res_urb);
|
|
}
|
|
|
|
static u16 roundup_to_multiple_of_64(u16 number)
|
|
{
|
|
return 0xFFC0 & (0x3F + number);
|
|
}
|
|
|
|
/*
|
|
* this is a separate function to solve the 80 column width restriction
|
|
*/
|
|
static void __download_offload_pseudocode(struct vub300_mmc_host *vub300,
|
|
const struct firmware *fw)
|
|
{
|
|
u8 register_count = 0;
|
|
u16 ts = 0;
|
|
u16 interrupt_size = 0;
|
|
const u8 *data = fw->data;
|
|
int size = fw->size;
|
|
u8 c;
|
|
dev_info(&vub300->udev->dev, "using %s for SDIO offload processing\n",
|
|
vub300->vub_name);
|
|
do {
|
|
c = *data++;
|
|
} while (size-- && c); /* skip comment */
|
|
dev_info(&vub300->udev->dev, "using offload firmware %s %s\n", fw->data,
|
|
vub300->vub_name);
|
|
if (size < 4) {
|
|
dev_err(&vub300->udev->dev,
|
|
"corrupt offload pseudocode in firmware %s\n",
|
|
vub300->vub_name);
|
|
strncpy(vub300->vub_name, "corrupt offload pseudocode",
|
|
sizeof(vub300->vub_name));
|
|
return;
|
|
}
|
|
interrupt_size += *data++;
|
|
size -= 1;
|
|
interrupt_size <<= 8;
|
|
interrupt_size += *data++;
|
|
size -= 1;
|
|
if (interrupt_size < size) {
|
|
u16 xfer_length = roundup_to_multiple_of_64(interrupt_size);
|
|
u8 *xfer_buffer = kmalloc(xfer_length, GFP_KERNEL);
|
|
if (xfer_buffer) {
|
|
int retval;
|
|
memcpy(xfer_buffer, data, interrupt_size);
|
|
memset(xfer_buffer + interrupt_size, 0,
|
|
xfer_length - interrupt_size);
|
|
size -= interrupt_size;
|
|
data += interrupt_size;
|
|
retval =
|
|
usb_control_msg(vub300->udev,
|
|
usb_sndctrlpipe(vub300->udev, 0),
|
|
SET_INTERRUPT_PSEUDOCODE,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR |
|
|
USB_RECIP_DEVICE, 0x0000, 0x0000,
|
|
xfer_buffer, xfer_length, HZ);
|
|
kfree(xfer_buffer);
|
|
if (retval < 0) {
|
|
strncpy(vub300->vub_name,
|
|
"SDIO pseudocode download failed",
|
|
sizeof(vub300->vub_name));
|
|
return;
|
|
}
|
|
} else {
|
|
dev_err(&vub300->udev->dev,
|
|
"not enough memory for xfer buffer to send"
|
|
" INTERRUPT_PSEUDOCODE for %s %s\n", fw->data,
|
|
vub300->vub_name);
|
|
strncpy(vub300->vub_name,
|
|
"SDIO interrupt pseudocode download failed",
|
|
sizeof(vub300->vub_name));
|
|
return;
|
|
}
|
|
} else {
|
|
dev_err(&vub300->udev->dev,
|
|
"corrupt interrupt pseudocode in firmware %s %s\n",
|
|
fw->data, vub300->vub_name);
|
|
strncpy(vub300->vub_name, "corrupt interrupt pseudocode",
|
|
sizeof(vub300->vub_name));
|
|
return;
|
|
}
|
|
ts += *data++;
|
|
size -= 1;
|
|
ts <<= 8;
|
|
ts += *data++;
|
|
size -= 1;
|
|
if (ts < size) {
|
|
u16 xfer_length = roundup_to_multiple_of_64(ts);
|
|
u8 *xfer_buffer = kmalloc(xfer_length, GFP_KERNEL);
|
|
if (xfer_buffer) {
|
|
int retval;
|
|
memcpy(xfer_buffer, data, ts);
|
|
memset(xfer_buffer + ts, 0,
|
|
xfer_length - ts);
|
|
size -= ts;
|
|
data += ts;
|
|
retval =
|
|
usb_control_msg(vub300->udev,
|
|
usb_sndctrlpipe(vub300->udev, 0),
|
|
SET_TRANSFER_PSEUDOCODE,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR |
|
|
USB_RECIP_DEVICE, 0x0000, 0x0000,
|
|
xfer_buffer, xfer_length, HZ);
|
|
kfree(xfer_buffer);
|
|
if (retval < 0) {
|
|
strncpy(vub300->vub_name,
|
|
"SDIO pseudocode download failed",
|
|
sizeof(vub300->vub_name));
|
|
return;
|
|
}
|
|
} else {
|
|
dev_err(&vub300->udev->dev,
|
|
"not enough memory for xfer buffer to send"
|
|
" TRANSFER_PSEUDOCODE for %s %s\n", fw->data,
|
|
vub300->vub_name);
|
|
strncpy(vub300->vub_name,
|
|
"SDIO transfer pseudocode download failed",
|
|
sizeof(vub300->vub_name));
|
|
return;
|
|
}
|
|
} else {
|
|
dev_err(&vub300->udev->dev,
|
|
"corrupt transfer pseudocode in firmware %s %s\n",
|
|
fw->data, vub300->vub_name);
|
|
strncpy(vub300->vub_name, "corrupt transfer pseudocode",
|
|
sizeof(vub300->vub_name));
|
|
return;
|
|
}
|
|
register_count += *data++;
|
|
size -= 1;
|
|
if (register_count * 4 == size) {
|
|
int I = vub300->dynamic_register_count = register_count;
|
|
int i = 0;
|
|
while (I--) {
|
|
unsigned int func_num = 0;
|
|
vub300->sdio_register[i].func_num = *data++;
|
|
size -= 1;
|
|
func_num += *data++;
|
|
size -= 1;
|
|
func_num <<= 8;
|
|
func_num += *data++;
|
|
size -= 1;
|
|
func_num <<= 8;
|
|
func_num += *data++;
|
|
size -= 1;
|
|
vub300->sdio_register[i].sdio_reg = func_num;
|
|
vub300->sdio_register[i].activate = 1;
|
|
vub300->sdio_register[i].prepared = 0;
|
|
i += 1;
|
|
}
|
|
dev_info(&vub300->udev->dev,
|
|
"initialized %d dynamic pseudocode registers\n",
|
|
vub300->dynamic_register_count);
|
|
return;
|
|
} else {
|
|
dev_err(&vub300->udev->dev,
|
|
"corrupt dynamic registers in firmware %s\n",
|
|
vub300->vub_name);
|
|
strncpy(vub300->vub_name, "corrupt dynamic registers",
|
|
sizeof(vub300->vub_name));
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* if the binary containing the EMPTY PseudoCode can not be found
|
|
* vub300->vub_name is set anyway in order to prevent an automatic retry
|
|
*/
|
|
static void download_offload_pseudocode(struct vub300_mmc_host *vub300)
|
|
{
|
|
struct mmc_card *card = vub300->mmc->card;
|
|
int sdio_funcs = card->sdio_funcs;
|
|
const struct firmware *fw = NULL;
|
|
int l = snprintf(vub300->vub_name, sizeof(vub300->vub_name),
|
|
"vub_%04X%04X", card->cis.vendor, card->cis.device);
|
|
int n = 0;
|
|
int retval;
|
|
for (n = 0; n < sdio_funcs; n++) {
|
|
struct sdio_func *sf = card->sdio_func[n];
|
|
l += snprintf(vub300->vub_name + l,
|
|
sizeof(vub300->vub_name) - l, "_%04X%04X",
|
|
sf->vendor, sf->device);
|
|
};
|
|
snprintf(vub300->vub_name + l, sizeof(vub300->vub_name) - l, ".bin");
|
|
dev_info(&vub300->udev->dev, "requesting offload firmware %s\n",
|
|
vub300->vub_name);
|
|
retval = request_firmware(&fw, vub300->vub_name, &card->dev);
|
|
if (retval < 0) {
|
|
strncpy(vub300->vub_name, "vub_default.bin",
|
|
sizeof(vub300->vub_name));
|
|
retval = request_firmware(&fw, vub300->vub_name, &card->dev);
|
|
if (retval < 0) {
|
|
strncpy(vub300->vub_name,
|
|
"no SDIO offload firmware found",
|
|
sizeof(vub300->vub_name));
|
|
} else {
|
|
__download_offload_pseudocode(vub300, fw);
|
|
release_firmware(fw);
|
|
}
|
|
} else {
|
|
__download_offload_pseudocode(vub300, fw);
|
|
release_firmware(fw);
|
|
}
|
|
}
|
|
|
|
static void vub300_usb_bulk_msg_completion(struct urb *urb)
|
|
{ /* urb completion handler - hardirq */
|
|
complete((struct completion *)urb->context);
|
|
}
|
|
|
|
static int vub300_usb_bulk_msg(struct vub300_mmc_host *vub300,
|
|
unsigned int pipe, void *data, int len,
|
|
int *actual_length, int timeout_msecs)
|
|
{
|
|
/* cmd_mutex is held by vub300_cmndwork_thread */
|
|
struct usb_device *usb_dev = vub300->udev;
|
|
struct completion done;
|
|
int retval;
|
|
vub300->urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!vub300->urb)
|
|
return -ENOMEM;
|
|
usb_fill_bulk_urb(vub300->urb, usb_dev, pipe, data, len,
|
|
vub300_usb_bulk_msg_completion, NULL);
|
|
init_completion(&done);
|
|
vub300->urb->context = &done;
|
|
vub300->urb->actual_length = 0;
|
|
retval = usb_submit_urb(vub300->urb, GFP_KERNEL);
|
|
if (unlikely(retval))
|
|
goto out;
|
|
if (!wait_for_completion_timeout
|
|
(&done, msecs_to_jiffies(timeout_msecs))) {
|
|
retval = -ETIMEDOUT;
|
|
usb_kill_urb(vub300->urb);
|
|
} else {
|
|
retval = vub300->urb->status;
|
|
}
|
|
out:
|
|
*actual_length = vub300->urb->actual_length;
|
|
usb_free_urb(vub300->urb);
|
|
vub300->urb = NULL;
|
|
return retval;
|
|
}
|
|
|
|
static int __command_read_data(struct vub300_mmc_host *vub300,
|
|
struct mmc_command *cmd, struct mmc_data *data)
|
|
{
|
|
/* cmd_mutex is held by vub300_cmndwork_thread */
|
|
int linear_length = vub300->datasize;
|
|
int padded_length = vub300->large_usb_packets ?
|
|
((511 + linear_length) >> 9) << 9 :
|
|
((63 + linear_length) >> 6) << 6;
|
|
if ((padded_length == linear_length) || !pad_input_to_usb_pkt) {
|
|
int result;
|
|
unsigned pipe;
|
|
pipe = usb_rcvbulkpipe(vub300->udev, vub300->data_inp_ep);
|
|
result = usb_sg_init(&vub300->sg_request, vub300->udev,
|
|
pipe, 0, data->sg,
|
|
data->sg_len, 0, GFP_KERNEL);
|
|
if (result < 0) {
|
|
usb_unlink_urb(vub300->command_out_urb);
|
|
usb_unlink_urb(vub300->command_res_urb);
|
|
cmd->error = result;
|
|
data->bytes_xfered = 0;
|
|
return 0;
|
|
} else {
|
|
vub300->sg_transfer_timer.expires =
|
|
jiffies + msecs_to_jiffies(2000 +
|
|
(linear_length / 16384));
|
|
add_timer(&vub300->sg_transfer_timer);
|
|
usb_sg_wait(&vub300->sg_request);
|
|
del_timer(&vub300->sg_transfer_timer);
|
|
if (vub300->sg_request.status < 0) {
|
|
cmd->error = vub300->sg_request.status;
|
|
data->bytes_xfered = 0;
|
|
return 0;
|
|
} else {
|
|
data->bytes_xfered = vub300->datasize;
|
|
return linear_length;
|
|
}
|
|
}
|
|
} else {
|
|
u8 *buf = kmalloc(padded_length, GFP_KERNEL);
|
|
if (buf) {
|
|
int result;
|
|
unsigned pipe = usb_rcvbulkpipe(vub300->udev,
|
|
vub300->data_inp_ep);
|
|
int actual_length = 0;
|
|
result = vub300_usb_bulk_msg(vub300, pipe, buf,
|
|
padded_length, &actual_length,
|
|
2000 + (padded_length / 16384));
|
|
if (result < 0) {
|
|
cmd->error = result;
|
|
data->bytes_xfered = 0;
|
|
kfree(buf);
|
|
return 0;
|
|
} else if (actual_length < linear_length) {
|
|
cmd->error = -EREMOTEIO;
|
|
data->bytes_xfered = 0;
|
|
kfree(buf);
|
|
return 0;
|
|
} else {
|
|
sg_copy_from_buffer(data->sg, data->sg_len, buf,
|
|
linear_length);
|
|
kfree(buf);
|
|
data->bytes_xfered = vub300->datasize;
|
|
return linear_length;
|
|
}
|
|
} else {
|
|
cmd->error = -ENOMEM;
|
|
data->bytes_xfered = 0;
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int __command_write_data(struct vub300_mmc_host *vub300,
|
|
struct mmc_command *cmd, struct mmc_data *data)
|
|
{
|
|
/* cmd_mutex is held by vub300_cmndwork_thread */
|
|
unsigned pipe = usb_sndbulkpipe(vub300->udev, vub300->data_out_ep);
|
|
int linear_length = vub300->datasize;
|
|
int modulo_64_length = linear_length & 0x003F;
|
|
int modulo_512_length = linear_length & 0x01FF;
|
|
if (linear_length < 64) {
|
|
int result;
|
|
int actual_length;
|
|
sg_copy_to_buffer(data->sg, data->sg_len,
|
|
vub300->padded_buffer,
|
|
sizeof(vub300->padded_buffer));
|
|
memset(vub300->padded_buffer + linear_length, 0,
|
|
sizeof(vub300->padded_buffer) - linear_length);
|
|
result = vub300_usb_bulk_msg(vub300, pipe, vub300->padded_buffer,
|
|
sizeof(vub300->padded_buffer),
|
|
&actual_length, 2000 +
|
|
(sizeof(vub300->padded_buffer) /
|
|
16384));
|
|
if (result < 0) {
|
|
cmd->error = result;
|
|
data->bytes_xfered = 0;
|
|
} else {
|
|
data->bytes_xfered = vub300->datasize;
|
|
}
|
|
} else if ((!vub300->large_usb_packets && (0 < modulo_64_length)) ||
|
|
(vub300->large_usb_packets && (64 > modulo_512_length))
|
|
) { /* don't you just love these work-rounds */
|
|
int padded_length = ((63 + linear_length) >> 6) << 6;
|
|
u8 *buf = kmalloc(padded_length, GFP_KERNEL);
|
|
if (buf) {
|
|
int result;
|
|
int actual_length;
|
|
sg_copy_to_buffer(data->sg, data->sg_len, buf,
|
|
padded_length);
|
|
memset(buf + linear_length, 0,
|
|
padded_length - linear_length);
|
|
result =
|
|
vub300_usb_bulk_msg(vub300, pipe, buf,
|
|
padded_length, &actual_length,
|
|
2000 + padded_length / 16384);
|
|
kfree(buf);
|
|
if (result < 0) {
|
|
cmd->error = result;
|
|
data->bytes_xfered = 0;
|
|
} else {
|
|
data->bytes_xfered = vub300->datasize;
|
|
}
|
|
} else {
|
|
cmd->error = -ENOMEM;
|
|
data->bytes_xfered = 0;
|
|
}
|
|
} else { /* no data padding required */
|
|
int result;
|
|
unsigned char buf[64 * 4];
|
|
sg_copy_to_buffer(data->sg, data->sg_len, buf, sizeof(buf));
|
|
result = usb_sg_init(&vub300->sg_request, vub300->udev,
|
|
pipe, 0, data->sg,
|
|
data->sg_len, 0, GFP_KERNEL);
|
|
if (result < 0) {
|
|
usb_unlink_urb(vub300->command_out_urb);
|
|
usb_unlink_urb(vub300->command_res_urb);
|
|
cmd->error = result;
|
|
data->bytes_xfered = 0;
|
|
} else {
|
|
vub300->sg_transfer_timer.expires =
|
|
jiffies + msecs_to_jiffies(2000 +
|
|
linear_length / 16384);
|
|
add_timer(&vub300->sg_transfer_timer);
|
|
usb_sg_wait(&vub300->sg_request);
|
|
if (cmd->error) {
|
|
data->bytes_xfered = 0;
|
|
} else {
|
|
del_timer(&vub300->sg_transfer_timer);
|
|
if (vub300->sg_request.status < 0) {
|
|
cmd->error = vub300->sg_request.status;
|
|
data->bytes_xfered = 0;
|
|
} else {
|
|
data->bytes_xfered = vub300->datasize;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return linear_length;
|
|
}
|
|
|
|
static void __vub300_command_response(struct vub300_mmc_host *vub300,
|
|
struct mmc_command *cmd,
|
|
struct mmc_data *data, int data_length)
|
|
{
|
|
/* cmd_mutex is held by vub300_cmndwork_thread */
|
|
long respretval;
|
|
int msec_timeout = 1000 + data_length / 4;
|
|
respretval =
|
|
wait_for_completion_timeout(&vub300->command_complete,
|
|
msecs_to_jiffies(msec_timeout));
|
|
if (respretval == 0) { /* TIMED OUT */
|
|
/* we don't know which of "out" and "res" if any failed */
|
|
int result;
|
|
vub300->usb_timed_out = 1;
|
|
usb_kill_urb(vub300->command_out_urb);
|
|
usb_kill_urb(vub300->command_res_urb);
|
|
cmd->error = -ETIMEDOUT;
|
|
result = usb_lock_device_for_reset(vub300->udev,
|
|
vub300->interface);
|
|
if (result == 0) {
|
|
result = usb_reset_device(vub300->udev);
|
|
usb_unlock_device(vub300->udev);
|
|
}
|
|
} else if (respretval < 0) {
|
|
/* we don't know which of "out" and "res" if any failed */
|
|
usb_kill_urb(vub300->command_out_urb);
|
|
usb_kill_urb(vub300->command_res_urb);
|
|
cmd->error = respretval;
|
|
} else if (cmd->error) {
|
|
/*
|
|
* the error occurred sending the command
|
|
* or receiving the response
|
|
*/
|
|
} else if (vub300->command_out_urb->status) {
|
|
vub300->usb_transport_fail = vub300->command_out_urb->status;
|
|
cmd->error = -EPROTO == vub300->command_out_urb->status ?
|
|
-ESHUTDOWN : vub300->command_out_urb->status;
|
|
} else if (vub300->command_res_urb->status) {
|
|
vub300->usb_transport_fail = vub300->command_res_urb->status;
|
|
cmd->error = -EPROTO == vub300->command_res_urb->status ?
|
|
-ESHUTDOWN : vub300->command_res_urb->status;
|
|
} else if (vub300->resp.common.header_type == 0x00) {
|
|
/*
|
|
* the command completed successfully
|
|
* and there was no piggybacked data
|
|
*/
|
|
} else if (vub300->resp.common.header_type == RESPONSE_ERROR) {
|
|
cmd->error =
|
|
vub300_response_error(vub300->resp.error.error_code);
|
|
if (vub300->data)
|
|
usb_sg_cancel(&vub300->sg_request);
|
|
} else if (vub300->resp.common.header_type == RESPONSE_PIGGYBACKED) {
|
|
int offloaded_data_length =
|
|
vub300->resp.common.header_size -
|
|
sizeof(struct sd_register_header);
|
|
int register_count = offloaded_data_length >> 3;
|
|
int ri = 0;
|
|
while (register_count--) {
|
|
add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]);
|
|
ri += 1;
|
|
}
|
|
vub300->resp.common.header_size =
|
|
sizeof(struct sd_register_header);
|
|
vub300->resp.common.header_type = 0x00;
|
|
cmd->error = 0;
|
|
} else if (vub300->resp.common.header_type == RESPONSE_PIG_DISABLED) {
|
|
int offloaded_data_length =
|
|
vub300->resp.common.header_size -
|
|
sizeof(struct sd_register_header);
|
|
int register_count = offloaded_data_length >> 3;
|
|
int ri = 0;
|
|
while (register_count--) {
|
|
add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]);
|
|
ri += 1;
|
|
}
|
|
mutex_lock(&vub300->irq_mutex);
|
|
if (vub300->irqs_queued) {
|
|
vub300->irqs_queued += 1;
|
|
} else if (vub300->irq_enabled) {
|
|
vub300->irqs_queued += 1;
|
|
vub300_queue_poll_work(vub300, 0);
|
|
} else {
|
|
vub300->irqs_queued += 1;
|
|
}
|
|
vub300->irq_disabled = 1;
|
|
mutex_unlock(&vub300->irq_mutex);
|
|
vub300->resp.common.header_size =
|
|
sizeof(struct sd_register_header);
|
|
vub300->resp.common.header_type = 0x00;
|
|
cmd->error = 0;
|
|
} else if (vub300->resp.common.header_type == RESPONSE_PIG_ENABLED) {
|
|
int offloaded_data_length =
|
|
vub300->resp.common.header_size -
|
|
sizeof(struct sd_register_header);
|
|
int register_count = offloaded_data_length >> 3;
|
|
int ri = 0;
|
|
while (register_count--) {
|
|
add_offloaded_reg(vub300, &vub300->resp.pig.reg[ri]);
|
|
ri += 1;
|
|
}
|
|
mutex_lock(&vub300->irq_mutex);
|
|
if (vub300->irqs_queued) {
|
|
vub300->irqs_queued += 1;
|
|
} else if (vub300->irq_enabled) {
|
|
vub300->irqs_queued += 1;
|
|
vub300_queue_poll_work(vub300, 0);
|
|
} else {
|
|
vub300->irqs_queued += 1;
|
|
}
|
|
vub300->irq_disabled = 0;
|
|
mutex_unlock(&vub300->irq_mutex);
|
|
vub300->resp.common.header_size =
|
|
sizeof(struct sd_register_header);
|
|
vub300->resp.common.header_type = 0x00;
|
|
cmd->error = 0;
|
|
} else {
|
|
cmd->error = -EINVAL;
|
|
}
|
|
}
|
|
|
|
static void construct_request_response(struct vub300_mmc_host *vub300,
|
|
struct mmc_command *cmd)
|
|
{
|
|
int resp_len = vub300->resp_len;
|
|
int less_cmd = (17 == resp_len) ? resp_len : resp_len - 1;
|
|
int bytes = 3 & less_cmd;
|
|
int words = less_cmd >> 2;
|
|
u8 *r = vub300->resp.response.command_response;
|
|
if (bytes == 3) {
|
|
cmd->resp[words] = (r[1 + (words << 2)] << 24)
|
|
| (r[2 + (words << 2)] << 16)
|
|
| (r[3 + (words << 2)] << 8);
|
|
} else if (bytes == 2) {
|
|
cmd->resp[words] = (r[1 + (words << 2)] << 24)
|
|
| (r[2 + (words << 2)] << 16);
|
|
} else if (bytes == 1) {
|
|
cmd->resp[words] = (r[1 + (words << 2)] << 24);
|
|
}
|
|
while (words-- > 0) {
|
|
cmd->resp[words] = (r[1 + (words << 2)] << 24)
|
|
| (r[2 + (words << 2)] << 16)
|
|
| (r[3 + (words << 2)] << 8)
|
|
| (r[4 + (words << 2)] << 0);
|
|
}
|
|
if ((cmd->opcode == 53) && (0x000000FF & cmd->resp[0]))
|
|
cmd->resp[0] &= 0xFFFFFF00;
|
|
}
|
|
|
|
/* this thread runs only when there is an upper level command req outstanding */
|
|
static void vub300_cmndwork_thread(struct work_struct *work)
|
|
{
|
|
struct vub300_mmc_host *vub300 =
|
|
container_of(work, struct vub300_mmc_host, cmndwork);
|
|
if (!vub300->interface) {
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
return;
|
|
} else {
|
|
struct mmc_request *req = vub300->req;
|
|
struct mmc_command *cmd = vub300->cmd;
|
|
struct mmc_data *data = vub300->data;
|
|
int data_length;
|
|
mutex_lock(&vub300->cmd_mutex);
|
|
init_completion(&vub300->command_complete);
|
|
if (likely(vub300->vub_name[0]) || !vub300->mmc->card ||
|
|
!mmc_card_present(vub300->mmc->card)) {
|
|
/*
|
|
* the name of the EMPTY Pseudo firmware file
|
|
* is used as a flag to indicate that the file
|
|
* has been already downloaded to the VUB300 chip
|
|
*/
|
|
} else if (0 == vub300->mmc->card->sdio_funcs) {
|
|
strncpy(vub300->vub_name, "SD memory device",
|
|
sizeof(vub300->vub_name));
|
|
} else {
|
|
download_offload_pseudocode(vub300);
|
|
}
|
|
send_command(vub300);
|
|
if (!data)
|
|
data_length = 0;
|
|
else if (MMC_DATA_READ & data->flags)
|
|
data_length = __command_read_data(vub300, cmd, data);
|
|
else
|
|
data_length = __command_write_data(vub300, cmd, data);
|
|
__vub300_command_response(vub300, cmd, data, data_length);
|
|
vub300->req = NULL;
|
|
vub300->cmd = NULL;
|
|
vub300->data = NULL;
|
|
if (cmd->error) {
|
|
if (cmd->error == -ENOMEDIUM)
|
|
check_vub300_port_status(vub300);
|
|
mutex_unlock(&vub300->cmd_mutex);
|
|
mmc_request_done(vub300->mmc, req);
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
return;
|
|
} else {
|
|
construct_request_response(vub300, cmd);
|
|
vub300->resp_len = 0;
|
|
mutex_unlock(&vub300->cmd_mutex);
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
mmc_request_done(vub300->mmc, req);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int examine_cyclic_buffer(struct vub300_mmc_host *vub300,
|
|
struct mmc_command *cmd, u8 Function)
|
|
{
|
|
/* cmd_mutex is held by vub300_mmc_request */
|
|
u8 cmd0 = 0xFF & (cmd->arg >> 24);
|
|
u8 cmd1 = 0xFF & (cmd->arg >> 16);
|
|
u8 cmd2 = 0xFF & (cmd->arg >> 8);
|
|
u8 cmd3 = 0xFF & (cmd->arg >> 0);
|
|
int first = MAXREGMASK & vub300->fn[Function].offload_point;
|
|
struct offload_registers_access *rf = &vub300->fn[Function].reg[first];
|
|
if (cmd0 == rf->command_byte[0] &&
|
|
cmd1 == rf->command_byte[1] &&
|
|
cmd2 == rf->command_byte[2] &&
|
|
cmd3 == rf->command_byte[3]) {
|
|
u8 checksum = 0x00;
|
|
cmd->resp[1] = checksum << 24;
|
|
cmd->resp[0] = (rf->Respond_Byte[0] << 24)
|
|
| (rf->Respond_Byte[1] << 16)
|
|
| (rf->Respond_Byte[2] << 8)
|
|
| (rf->Respond_Byte[3] << 0);
|
|
vub300->fn[Function].offload_point += 1;
|
|
vub300->fn[Function].offload_count -= 1;
|
|
vub300->total_offload_count -= 1;
|
|
return 1;
|
|
} else {
|
|
int delta = 1; /* because it does not match the first one */
|
|
u8 register_count = vub300->fn[Function].offload_count - 1;
|
|
u32 register_point = vub300->fn[Function].offload_point + 1;
|
|
while (0 < register_count) {
|
|
int point = MAXREGMASK & register_point;
|
|
struct offload_registers_access *r =
|
|
&vub300->fn[Function].reg[point];
|
|
if (cmd0 == r->command_byte[0] &&
|
|
cmd1 == r->command_byte[1] &&
|
|
cmd2 == r->command_byte[2] &&
|
|
cmd3 == r->command_byte[3]) {
|
|
u8 checksum = 0x00;
|
|
cmd->resp[1] = checksum << 24;
|
|
cmd->resp[0] = (r->Respond_Byte[0] << 24)
|
|
| (r->Respond_Byte[1] << 16)
|
|
| (r->Respond_Byte[2] << 8)
|
|
| (r->Respond_Byte[3] << 0);
|
|
vub300->fn[Function].offload_point += delta;
|
|
vub300->fn[Function].offload_count -= delta;
|
|
vub300->total_offload_count -= delta;
|
|
return 1;
|
|
} else {
|
|
register_point += 1;
|
|
register_count -= 1;
|
|
delta += 1;
|
|
continue;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int satisfy_request_from_offloaded_data(struct vub300_mmc_host *vub300,
|
|
struct mmc_command *cmd)
|
|
{
|
|
/* cmd_mutex is held by vub300_mmc_request */
|
|
u8 regs = vub300->dynamic_register_count;
|
|
u8 i = 0;
|
|
u8 func = FUN(cmd);
|
|
u32 reg = REG(cmd);
|
|
while (0 < regs--) {
|
|
if ((vub300->sdio_register[i].func_num == func) &&
|
|
(vub300->sdio_register[i].sdio_reg == reg)) {
|
|
if (!vub300->sdio_register[i].prepared) {
|
|
return 0;
|
|
} else if ((0x80000000 & cmd->arg) == 0x80000000) {
|
|
/*
|
|
* a write to a dynamic register
|
|
* nullifies our offloaded value
|
|
*/
|
|
vub300->sdio_register[i].prepared = 0;
|
|
return 0;
|
|
} else {
|
|
u8 checksum = 0x00;
|
|
u8 rsp0 = 0x00;
|
|
u8 rsp1 = 0x00;
|
|
u8 rsp2 = vub300->sdio_register[i].response;
|
|
u8 rsp3 = vub300->sdio_register[i].regvalue;
|
|
vub300->sdio_register[i].prepared = 0;
|
|
cmd->resp[1] = checksum << 24;
|
|
cmd->resp[0] = (rsp0 << 24)
|
|
| (rsp1 << 16)
|
|
| (rsp2 << 8)
|
|
| (rsp3 << 0);
|
|
return 1;
|
|
}
|
|
} else {
|
|
i += 1;
|
|
continue;
|
|
}
|
|
};
|
|
if (vub300->total_offload_count == 0)
|
|
return 0;
|
|
else if (vub300->fn[func].offload_count == 0)
|
|
return 0;
|
|
else
|
|
return examine_cyclic_buffer(vub300, cmd, func);
|
|
}
|
|
|
|
static void vub300_mmc_request(struct mmc_host *mmc, struct mmc_request *req)
|
|
{ /* NOT irq */
|
|
struct mmc_command *cmd = req->cmd;
|
|
struct vub300_mmc_host *vub300 = mmc_priv(mmc);
|
|
if (!vub300->interface) {
|
|
cmd->error = -ESHUTDOWN;
|
|
mmc_request_done(mmc, req);
|
|
return;
|
|
} else {
|
|
struct mmc_data *data = req->data;
|
|
if (!vub300->card_powered) {
|
|
cmd->error = -ENOMEDIUM;
|
|
mmc_request_done(mmc, req);
|
|
return;
|
|
}
|
|
if (!vub300->card_present) {
|
|
cmd->error = -ENOMEDIUM;
|
|
mmc_request_done(mmc, req);
|
|
return;
|
|
}
|
|
if (vub300->usb_transport_fail) {
|
|
cmd->error = vub300->usb_transport_fail;
|
|
mmc_request_done(mmc, req);
|
|
return;
|
|
}
|
|
if (!vub300->interface) {
|
|
cmd->error = -ENODEV;
|
|
mmc_request_done(mmc, req);
|
|
return;
|
|
}
|
|
kref_get(&vub300->kref);
|
|
mutex_lock(&vub300->cmd_mutex);
|
|
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
|
|
/*
|
|
* for performance we have to return immediately
|
|
* if the requested data has been offloaded
|
|
*/
|
|
if (cmd->opcode == 52 &&
|
|
satisfy_request_from_offloaded_data(vub300, cmd)) {
|
|
cmd->error = 0;
|
|
mutex_unlock(&vub300->cmd_mutex);
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
mmc_request_done(mmc, req);
|
|
return;
|
|
} else {
|
|
vub300->cmd = cmd;
|
|
vub300->req = req;
|
|
vub300->data = data;
|
|
if (data)
|
|
vub300->datasize = data->blksz * data->blocks;
|
|
else
|
|
vub300->datasize = 0;
|
|
vub300_queue_cmnd_work(vub300);
|
|
mutex_unlock(&vub300->cmd_mutex);
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
/*
|
|
* the kernel lock diagnostics complain
|
|
* if the cmd_mutex * is "passed on"
|
|
* to the cmndwork thread,
|
|
* so we must release it now
|
|
* and re-acquire it in the cmndwork thread
|
|
*/
|
|
}
|
|
}
|
|
}
|
|
|
|
static void __set_clock_speed(struct vub300_mmc_host *vub300, u8 buf[8],
|
|
struct mmc_ios *ios)
|
|
{
|
|
int buf_array_size = 8; /* ARRAY_SIZE(buf) does not work !!! */
|
|
int retval;
|
|
u32 kHzClock;
|
|
if (ios->clock >= 48000000)
|
|
kHzClock = 48000;
|
|
else if (ios->clock >= 24000000)
|
|
kHzClock = 24000;
|
|
else if (ios->clock >= 20000000)
|
|
kHzClock = 20000;
|
|
else if (ios->clock >= 15000000)
|
|
kHzClock = 15000;
|
|
else if (ios->clock >= 200000)
|
|
kHzClock = 200;
|
|
else
|
|
kHzClock = 0;
|
|
{
|
|
int i;
|
|
u64 c = kHzClock;
|
|
for (i = 0; i < buf_array_size; i++) {
|
|
buf[i] = c;
|
|
c >>= 8;
|
|
}
|
|
}
|
|
retval =
|
|
usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0),
|
|
SET_CLOCK_SPEED,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0x00, 0x00, buf, buf_array_size, HZ);
|
|
if (retval != 8) {
|
|
dev_err(&vub300->udev->dev, "SET_CLOCK_SPEED"
|
|
" %dkHz failed with retval=%d\n", kHzClock, retval);
|
|
} else {
|
|
dev_dbg(&vub300->udev->dev, "SET_CLOCK_SPEED"
|
|
" %dkHz\n", kHzClock);
|
|
}
|
|
}
|
|
|
|
static void vub300_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
|
|
{ /* NOT irq */
|
|
struct vub300_mmc_host *vub300 = mmc_priv(mmc);
|
|
if (!vub300->interface)
|
|
return;
|
|
kref_get(&vub300->kref);
|
|
mutex_lock(&vub300->cmd_mutex);
|
|
if ((ios->power_mode == MMC_POWER_OFF) && vub300->card_powered) {
|
|
vub300->card_powered = 0;
|
|
usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0),
|
|
SET_SD_POWER,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0x0000, 0x0000, NULL, 0, HZ);
|
|
/* must wait for the VUB300 u-proc to boot up */
|
|
msleep(600);
|
|
} else if ((ios->power_mode == MMC_POWER_UP) && !vub300->card_powered) {
|
|
usb_control_msg(vub300->udev, usb_sndctrlpipe(vub300->udev, 0),
|
|
SET_SD_POWER,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0x0001, 0x0000, NULL, 0, HZ);
|
|
msleep(600);
|
|
vub300->card_powered = 1;
|
|
} else if (ios->power_mode == MMC_POWER_ON) {
|
|
u8 *buf = kmalloc(8, GFP_KERNEL);
|
|
if (buf) {
|
|
__set_clock_speed(vub300, buf, ios);
|
|
kfree(buf);
|
|
}
|
|
} else {
|
|
/* this should mean no change of state */
|
|
}
|
|
mutex_unlock(&vub300->cmd_mutex);
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
}
|
|
|
|
static int vub300_mmc_get_ro(struct mmc_host *mmc)
|
|
{
|
|
struct vub300_mmc_host *vub300 = mmc_priv(mmc);
|
|
return vub300->read_only;
|
|
}
|
|
|
|
static void vub300_enable_sdio_irq(struct mmc_host *mmc, int enable)
|
|
{ /* NOT irq */
|
|
struct vub300_mmc_host *vub300 = mmc_priv(mmc);
|
|
if (!vub300->interface)
|
|
return;
|
|
kref_get(&vub300->kref);
|
|
if (enable) {
|
|
mutex_lock(&vub300->irq_mutex);
|
|
if (vub300->irqs_queued) {
|
|
vub300->irqs_queued -= 1;
|
|
mmc_signal_sdio_irq(vub300->mmc);
|
|
} else if (vub300->irq_disabled) {
|
|
vub300->irq_disabled = 0;
|
|
vub300->irq_enabled = 1;
|
|
vub300_queue_poll_work(vub300, 0);
|
|
} else if (vub300->irq_enabled) {
|
|
/* this should not happen, so we will just ignore it */
|
|
} else {
|
|
vub300->irq_enabled = 1;
|
|
vub300_queue_poll_work(vub300, 0);
|
|
}
|
|
mutex_unlock(&vub300->irq_mutex);
|
|
} else {
|
|
vub300->irq_enabled = 0;
|
|
}
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
}
|
|
|
|
void vub300_init_card(struct mmc_host *mmc, struct mmc_card *card)
|
|
{ /* NOT irq */
|
|
struct vub300_mmc_host *vub300 = mmc_priv(mmc);
|
|
dev_info(&vub300->udev->dev, "NO host QUIRKS for this card\n");
|
|
}
|
|
|
|
static struct mmc_host_ops vub300_mmc_ops = {
|
|
.request = vub300_mmc_request,
|
|
.set_ios = vub300_mmc_set_ios,
|
|
.get_ro = vub300_mmc_get_ro,
|
|
.enable_sdio_irq = vub300_enable_sdio_irq,
|
|
.init_card = vub300_init_card,
|
|
};
|
|
|
|
static int vub300_probe(struct usb_interface *interface,
|
|
const struct usb_device_id *id)
|
|
{ /* NOT irq */
|
|
struct vub300_mmc_host *vub300 = NULL;
|
|
struct usb_host_interface *iface_desc;
|
|
struct usb_device *udev = usb_get_dev(interface_to_usbdev(interface));
|
|
int i;
|
|
int retval = -ENOMEM;
|
|
struct urb *command_out_urb;
|
|
struct urb *command_res_urb;
|
|
struct mmc_host *mmc;
|
|
char manufacturer[48];
|
|
char product[32];
|
|
char serial_number[32];
|
|
usb_string(udev, udev->descriptor.iManufacturer, manufacturer,
|
|
sizeof(manufacturer));
|
|
usb_string(udev, udev->descriptor.iProduct, product, sizeof(product));
|
|
usb_string(udev, udev->descriptor.iSerialNumber, serial_number,
|
|
sizeof(serial_number));
|
|
dev_info(&udev->dev, "probing VID:PID(%04X:%04X) %s %s %s\n",
|
|
udev->descriptor.idVendor, udev->descriptor.idProduct,
|
|
manufacturer, product, serial_number);
|
|
command_out_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!command_out_urb) {
|
|
retval = -ENOMEM;
|
|
dev_err(&vub300->udev->dev,
|
|
"not enough memory for the command_out_urb\n");
|
|
goto error0;
|
|
}
|
|
command_res_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!command_res_urb) {
|
|
retval = -ENOMEM;
|
|
dev_err(&vub300->udev->dev,
|
|
"not enough memory for the command_res_urb\n");
|
|
goto error1;
|
|
}
|
|
/* this also allocates memory for our VUB300 mmc host device */
|
|
mmc = mmc_alloc_host(sizeof(struct vub300_mmc_host), &udev->dev);
|
|
if (!mmc) {
|
|
retval = -ENOMEM;
|
|
dev_err(&vub300->udev->dev,
|
|
"not enough memory for the mmc_host\n");
|
|
goto error4;
|
|
}
|
|
/* MMC core transfer sizes tunable parameters */
|
|
mmc->caps = 0;
|
|
if (!force_1_bit_data_xfers)
|
|
mmc->caps |= MMC_CAP_4_BIT_DATA;
|
|
if (!force_polling_for_irqs)
|
|
mmc->caps |= MMC_CAP_SDIO_IRQ;
|
|
mmc->caps &= ~MMC_CAP_NEEDS_POLL;
|
|
/*
|
|
* MMC_CAP_NEEDS_POLL causes core.c:mmc_rescan() to poll
|
|
* for devices which results in spurious CMD7's being
|
|
* issued which stops some SDIO cards from working
|
|
*/
|
|
if (limit_speed_to_24_MHz) {
|
|
mmc->caps |= MMC_CAP_MMC_HIGHSPEED;
|
|
mmc->caps |= MMC_CAP_SD_HIGHSPEED;
|
|
mmc->f_max = 24000000;
|
|
dev_info(&udev->dev, "limiting SDIO speed to 24_MHz\n");
|
|
} else {
|
|
mmc->caps |= MMC_CAP_MMC_HIGHSPEED;
|
|
mmc->caps |= MMC_CAP_SD_HIGHSPEED;
|
|
mmc->f_max = 48000000;
|
|
}
|
|
mmc->f_min = 200000;
|
|
mmc->max_blk_count = 511;
|
|
mmc->max_blk_size = 512;
|
|
mmc->max_segs = 128;
|
|
if (force_max_req_size)
|
|
mmc->max_req_size = force_max_req_size * 1024;
|
|
else
|
|
mmc->max_req_size = 64 * 1024;
|
|
mmc->max_seg_size = mmc->max_req_size;
|
|
mmc->ocr_avail = 0;
|
|
mmc->ocr_avail |= MMC_VDD_165_195;
|
|
mmc->ocr_avail |= MMC_VDD_20_21;
|
|
mmc->ocr_avail |= MMC_VDD_21_22;
|
|
mmc->ocr_avail |= MMC_VDD_22_23;
|
|
mmc->ocr_avail |= MMC_VDD_23_24;
|
|
mmc->ocr_avail |= MMC_VDD_24_25;
|
|
mmc->ocr_avail |= MMC_VDD_25_26;
|
|
mmc->ocr_avail |= MMC_VDD_26_27;
|
|
mmc->ocr_avail |= MMC_VDD_27_28;
|
|
mmc->ocr_avail |= MMC_VDD_28_29;
|
|
mmc->ocr_avail |= MMC_VDD_29_30;
|
|
mmc->ocr_avail |= MMC_VDD_30_31;
|
|
mmc->ocr_avail |= MMC_VDD_31_32;
|
|
mmc->ocr_avail |= MMC_VDD_32_33;
|
|
mmc->ocr_avail |= MMC_VDD_33_34;
|
|
mmc->ocr_avail |= MMC_VDD_34_35;
|
|
mmc->ocr_avail |= MMC_VDD_35_36;
|
|
mmc->ops = &vub300_mmc_ops;
|
|
vub300 = mmc_priv(mmc);
|
|
vub300->mmc = mmc;
|
|
vub300->card_powered = 0;
|
|
vub300->bus_width = 0;
|
|
vub300->cmnd.head.block_size[0] = 0x00;
|
|
vub300->cmnd.head.block_size[1] = 0x00;
|
|
vub300->app_spec = 0;
|
|
mutex_init(&vub300->cmd_mutex);
|
|
mutex_init(&vub300->irq_mutex);
|
|
vub300->command_out_urb = command_out_urb;
|
|
vub300->command_res_urb = command_res_urb;
|
|
vub300->usb_timed_out = 0;
|
|
vub300->dynamic_register_count = 0;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(vub300->fn); i++) {
|
|
vub300->fn[i].offload_point = 0;
|
|
vub300->fn[i].offload_count = 0;
|
|
}
|
|
|
|
vub300->total_offload_count = 0;
|
|
vub300->irq_enabled = 0;
|
|
vub300->irq_disabled = 0;
|
|
vub300->irqs_queued = 0;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(vub300->sdio_register); i++)
|
|
vub300->sdio_register[i++].activate = 0;
|
|
|
|
vub300->udev = udev;
|
|
vub300->interface = interface;
|
|
vub300->cmnd_res_ep = 0;
|
|
vub300->cmnd_out_ep = 0;
|
|
vub300->data_inp_ep = 0;
|
|
vub300->data_out_ep = 0;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(vub300->fbs); i++)
|
|
vub300->fbs[i] = 512;
|
|
|
|
/*
|
|
* set up the endpoint information
|
|
*
|
|
* use the first pair of bulk-in and bulk-out
|
|
* endpoints for Command/Response+Interrupt
|
|
*
|
|
* use the second pair of bulk-in and bulk-out
|
|
* endpoints for Data In/Out
|
|
*/
|
|
vub300->large_usb_packets = 0;
|
|
iface_desc = interface->cur_altsetting;
|
|
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
|
|
struct usb_endpoint_descriptor *endpoint =
|
|
&iface_desc->endpoint[i].desc;
|
|
dev_info(&vub300->udev->dev,
|
|
"vub300 testing %s EndPoint(%d) %02X\n",
|
|
usb_endpoint_is_bulk_in(endpoint) ? "BULK IN" :
|
|
usb_endpoint_is_bulk_out(endpoint) ? "BULK OUT" :
|
|
"UNKNOWN", i, endpoint->bEndpointAddress);
|
|
if (endpoint->wMaxPacketSize > 64)
|
|
vub300->large_usb_packets = 1;
|
|
if (usb_endpoint_is_bulk_in(endpoint)) {
|
|
if (!vub300->cmnd_res_ep) {
|
|
vub300->cmnd_res_ep =
|
|
endpoint->bEndpointAddress;
|
|
} else if (!vub300->data_inp_ep) {
|
|
vub300->data_inp_ep =
|
|
endpoint->bEndpointAddress;
|
|
} else {
|
|
dev_warn(&vub300->udev->dev,
|
|
"ignoring"
|
|
" unexpected bulk_in endpoint");
|
|
}
|
|
} else if (usb_endpoint_is_bulk_out(endpoint)) {
|
|
if (!vub300->cmnd_out_ep) {
|
|
vub300->cmnd_out_ep =
|
|
endpoint->bEndpointAddress;
|
|
} else if (!vub300->data_out_ep) {
|
|
vub300->data_out_ep =
|
|
endpoint->bEndpointAddress;
|
|
} else {
|
|
dev_warn(&vub300->udev->dev,
|
|
"ignoring"
|
|
" unexpected bulk_out endpoint");
|
|
}
|
|
} else {
|
|
dev_warn(&vub300->udev->dev,
|
|
"vub300 ignoring EndPoint(%d) %02X", i,
|
|
endpoint->bEndpointAddress);
|
|
}
|
|
}
|
|
if (vub300->cmnd_res_ep && vub300->cmnd_out_ep &&
|
|
vub300->data_inp_ep && vub300->data_out_ep) {
|
|
dev_info(&vub300->udev->dev,
|
|
"vub300 %s packets"
|
|
" using EndPoints %02X %02X %02X %02X\n",
|
|
vub300->large_usb_packets ? "LARGE" : "SMALL",
|
|
vub300->cmnd_out_ep, vub300->cmnd_res_ep,
|
|
vub300->data_out_ep, vub300->data_inp_ep);
|
|
/* we have the expected EndPoints */
|
|
} else {
|
|
dev_err(&vub300->udev->dev,
|
|
"Could not find two sets of bulk-in/out endpoint pairs\n");
|
|
retval = -EINVAL;
|
|
goto error5;
|
|
}
|
|
retval =
|
|
usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0),
|
|
GET_HC_INF0,
|
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0x0000, 0x0000, &vub300->hc_info,
|
|
sizeof(vub300->hc_info), HZ);
|
|
if (retval < 0)
|
|
goto error5;
|
|
retval =
|
|
usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0),
|
|
SET_ROM_WAIT_STATES,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
firmware_rom_wait_states, 0x0000, NULL, 0, HZ);
|
|
if (retval < 0)
|
|
goto error5;
|
|
dev_info(&vub300->udev->dev,
|
|
"operating_mode = %s %s %d MHz %s %d byte USB packets\n",
|
|
(mmc->caps & MMC_CAP_SDIO_IRQ) ? "IRQs" : "POLL",
|
|
(mmc->caps & MMC_CAP_4_BIT_DATA) ? "4-bit" : "1-bit",
|
|
mmc->f_max / 1000000,
|
|
pad_input_to_usb_pkt ? "padding input data to" : "with",
|
|
vub300->large_usb_packets ? 512 : 64);
|
|
retval =
|
|
usb_control_msg(vub300->udev, usb_rcvctrlpipe(vub300->udev, 0),
|
|
GET_SYSTEM_PORT_STATUS,
|
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0x0000, 0x0000, &vub300->system_port_status,
|
|
sizeof(vub300->system_port_status), HZ);
|
|
if (retval < 0) {
|
|
goto error4;
|
|
} else if (sizeof(vub300->system_port_status) == retval) {
|
|
vub300->card_present =
|
|
(0x0001 & vub300->system_port_status.port_flags) ? 1 : 0;
|
|
vub300->read_only =
|
|
(0x0010 & vub300->system_port_status.port_flags) ? 1 : 0;
|
|
} else {
|
|
goto error4;
|
|
}
|
|
usb_set_intfdata(interface, vub300);
|
|
INIT_DELAYED_WORK(&vub300->pollwork, vub300_pollwork_thread);
|
|
INIT_WORK(&vub300->cmndwork, vub300_cmndwork_thread);
|
|
INIT_WORK(&vub300->deadwork, vub300_deadwork_thread);
|
|
kref_init(&vub300->kref);
|
|
init_timer(&vub300->sg_transfer_timer);
|
|
vub300->sg_transfer_timer.data = (unsigned long)vub300;
|
|
vub300->sg_transfer_timer.function = vub300_sg_timed_out;
|
|
kref_get(&vub300->kref);
|
|
init_timer(&vub300->inactivity_timer);
|
|
vub300->inactivity_timer.data = (unsigned long)vub300;
|
|
vub300->inactivity_timer.function = vub300_inactivity_timer_expired;
|
|
vub300->inactivity_timer.expires = jiffies + HZ;
|
|
add_timer(&vub300->inactivity_timer);
|
|
if (vub300->card_present)
|
|
dev_info(&vub300->udev->dev,
|
|
"USB vub300 remote SDIO host controller[%d]"
|
|
"connected with SD/SDIO card inserted\n",
|
|
interface_to_InterfaceNumber(interface));
|
|
else
|
|
dev_info(&vub300->udev->dev,
|
|
"USB vub300 remote SDIO host controller[%d]"
|
|
"connected with no SD/SDIO card inserted\n",
|
|
interface_to_InterfaceNumber(interface));
|
|
mmc_add_host(mmc);
|
|
return 0;
|
|
error5:
|
|
mmc_free_host(mmc);
|
|
/*
|
|
* and hence also frees vub300
|
|
* which is contained at the end of struct mmc
|
|
*/
|
|
error4:
|
|
usb_free_urb(command_out_urb);
|
|
error1:
|
|
usb_free_urb(command_res_urb);
|
|
error0:
|
|
return retval;
|
|
}
|
|
|
|
static void vub300_disconnect(struct usb_interface *interface)
|
|
{ /* NOT irq */
|
|
struct vub300_mmc_host *vub300 = usb_get_intfdata(interface);
|
|
if (!vub300 || !vub300->mmc) {
|
|
return;
|
|
} else {
|
|
struct mmc_host *mmc = vub300->mmc;
|
|
if (!vub300->mmc) {
|
|
return;
|
|
} else {
|
|
int ifnum = interface_to_InterfaceNumber(interface);
|
|
usb_set_intfdata(interface, NULL);
|
|
/* prevent more I/O from starting */
|
|
vub300->interface = NULL;
|
|
kref_put(&vub300->kref, vub300_delete);
|
|
mmc_remove_host(mmc);
|
|
pr_info("USB vub300 remote SDIO host controller[%d]"
|
|
" now disconnected", ifnum);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int vub300_suspend(struct usb_interface *intf, pm_message_t message)
|
|
{
|
|
struct vub300_mmc_host *vub300 = usb_get_intfdata(intf);
|
|
if (!vub300 || !vub300->mmc) {
|
|
return 0;
|
|
} else {
|
|
struct mmc_host *mmc = vub300->mmc;
|
|
mmc_suspend_host(mmc);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int vub300_resume(struct usb_interface *intf)
|
|
{
|
|
struct vub300_mmc_host *vub300 = usb_get_intfdata(intf);
|
|
if (!vub300 || !vub300->mmc) {
|
|
return 0;
|
|
} else {
|
|
struct mmc_host *mmc = vub300->mmc;
|
|
mmc_resume_host(mmc);
|
|
return 0;
|
|
}
|
|
}
|
|
#else
|
|
#define vub300_suspend NULL
|
|
#define vub300_resume NULL
|
|
#endif
|
|
static int vub300_pre_reset(struct usb_interface *intf)
|
|
{ /* NOT irq */
|
|
struct vub300_mmc_host *vub300 = usb_get_intfdata(intf);
|
|
mutex_lock(&vub300->cmd_mutex);
|
|
return 0;
|
|
}
|
|
|
|
static int vub300_post_reset(struct usb_interface *intf)
|
|
{ /* NOT irq */
|
|
struct vub300_mmc_host *vub300 = usb_get_intfdata(intf);
|
|
/* we are sure no URBs are active - no locking needed */
|
|
vub300->errors = -EPIPE;
|
|
mutex_unlock(&vub300->cmd_mutex);
|
|
return 0;
|
|
}
|
|
|
|
static struct usb_driver vub300_driver = {
|
|
.name = "vub300",
|
|
.probe = vub300_probe,
|
|
.disconnect = vub300_disconnect,
|
|
.suspend = vub300_suspend,
|
|
.resume = vub300_resume,
|
|
.pre_reset = vub300_pre_reset,
|
|
.post_reset = vub300_post_reset,
|
|
.id_table = vub300_table,
|
|
.supports_autosuspend = 1,
|
|
};
|
|
|
|
static int __init vub300_init(void)
|
|
{ /* NOT irq */
|
|
int result;
|
|
|
|
pr_info("VUB300 Driver rom wait states = %02X irqpoll timeout = %04X",
|
|
firmware_rom_wait_states, 0x0FFFF & firmware_irqpoll_timeout);
|
|
cmndworkqueue = create_singlethread_workqueue("kvub300c");
|
|
if (!cmndworkqueue) {
|
|
pr_err("not enough memory for the REQUEST workqueue");
|
|
result = -ENOMEM;
|
|
goto out1;
|
|
}
|
|
pollworkqueue = create_singlethread_workqueue("kvub300p");
|
|
if (!pollworkqueue) {
|
|
pr_err("not enough memory for the IRQPOLL workqueue");
|
|
result = -ENOMEM;
|
|
goto out2;
|
|
}
|
|
deadworkqueue = create_singlethread_workqueue("kvub300d");
|
|
if (!deadworkqueue) {
|
|
pr_err("not enough memory for the EXPIRED workqueue");
|
|
result = -ENOMEM;
|
|
goto out3;
|
|
}
|
|
result = usb_register(&vub300_driver);
|
|
if (result) {
|
|
pr_err("usb_register failed. Error number %d", result);
|
|
goto out4;
|
|
}
|
|
return 0;
|
|
out4:
|
|
destroy_workqueue(deadworkqueue);
|
|
out3:
|
|
destroy_workqueue(pollworkqueue);
|
|
out2:
|
|
destroy_workqueue(cmndworkqueue);
|
|
out1:
|
|
return result;
|
|
}
|
|
|
|
static void __exit vub300_exit(void)
|
|
{
|
|
usb_deregister(&vub300_driver);
|
|
flush_workqueue(cmndworkqueue);
|
|
flush_workqueue(pollworkqueue);
|
|
flush_workqueue(deadworkqueue);
|
|
destroy_workqueue(cmndworkqueue);
|
|
destroy_workqueue(pollworkqueue);
|
|
destroy_workqueue(deadworkqueue);
|
|
}
|
|
|
|
module_init(vub300_init);
|
|
module_exit(vub300_exit);
|
|
|
|
MODULE_AUTHOR("Tony Olech <tony.olech@elandigitalsystems.com>");
|
|
MODULE_DESCRIPTION("VUB300 USB to SD/MMC/SDIO adapter driver");
|
|
MODULE_LICENSE("GPL");
|