libpayload: New AHCI, ATA and ATAPI drivers
This adds a new interface for storage devices. A driver for ATA and
ATAPI drives on AHCI host controllers comes along.
The interface is very simple and was designed to match FILO's needs.
It consists of three functions:
void storage_initialize(void);
Initializes controllers. Should be called once at startup.
storage_poll_t storage_probe(size_t dev_num);
with typedef enum {
POLL_NO_DEVICE = -2,
POLL_ERROR = -1,
POLL_NO_MEDIUM = 0,
POLL_MEDIUM_PRESENT = 1,
} storage_poll_t;
Looks for a drive with number dev_num (drives are counted from
zero) and polls for a medium in the drive if appropriate.
int storage_read_blocks512(size_t dev_num,
u64 start, size_t count,
unsigned char *buf);
Reads count blocks of 512 bytes from block start of drive dev_num
into buf.
Change-Id: I1c85796b7f8e379ff3817a61b1837636b57e182b
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1622
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Peter Stuge <peter@stuge.se>
This commit is contained in:
Nico Huber
Peter Stuge
parent
7baadac403
commit
1f6bd94fa8
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@ -242,6 +242,54 @@ config SPEAKER
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bool "Support for PC speaker"
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default y
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config STORAGE
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bool "Support for storage devices"
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default y
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help
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Select this option if you want support for storage devices (like
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hard drives, memory sticks or optical drives).
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config STORAGE_64BIT_LBA
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bool "Use 64-bit integers to address sectors"
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depends on STORAGE
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default n
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help
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If this is selected, sectors will be addressed by an 64-bit integer.
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Select this to support LBA-48 for ATA drives.
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config STORAGE_ATA
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bool "Support ATA drives (i.e. hard drives)"
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depends on STORAGE
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default y
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help
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Select this option if you want support for ATA storage devices
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(i.e. hard drives).
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config STORAGE_ATAPI
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bool "Support ATAPI drives (i.e. optical drives)"
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depends on STORAGE
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default y
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select STORAGE_ATA
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help
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Select this option if you want support for ATAPI storage devices
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(i.e. optical drives like CD or DVD drives).
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config STORAGE_AHCI
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bool "Support for AHCI host controllers"
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depends on STORAGE && (STORAGE_ATA || STORAGE_ATAPI) && PCI
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default y
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help
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Select this option if you want support for SATA controllers in
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AHCI mode.
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config STORAGE_AHCI_ONLY_TESTED
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bool "Only enable tested controllers"
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depends on STORAGE_AHCI
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default y
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help
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If this option is selected only AHCI controllers which are known
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to work will be used.
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config USB
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bool "USB Support"
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default n
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@ -52,6 +52,11 @@ libc-$(CONFIG_GEODELX_VIDEO_CONSOLE) += video/font8x16.c
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libc-$(CONFIG_COREBOOT_VIDEO_CONSOLE) += video/corebootfb.c
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libc-$(CONFIG_COREBOOT_VIDEO_CONSOLE) += video/font8x16.c
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libc-$(CONFIG_STORAGE) += storage/storage.c
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libc-$(CONFIG_STORAGE_ATA) += storage/ata.c
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libc-$(CONFIG_STORAGE_ATAPI) += storage/atapi.c
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libc-$(CONFIG_STORAGE_AHCI) += storage/ahci.c
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# USB stack
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libc-$(CONFIG_USB) += usb/usbinit.c
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libc-$(CONFIG_USB) += usb/usb.c
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@ -0,0 +1,541 @@
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/*
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* This file is part of the libpayload project.
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*
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* Copyright (C) 2012 secunet Security Networks AG
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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//#define DEBUG_STATUS
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <libpayload.h>
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#include <pci.h>
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#include <storage/ata.h>
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#include <storage/ahci.h>
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#include "ahci_private.h"
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#ifdef DEBUG_STATUS
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static inline u32 _ahci_clear_status(volatile u32 *const reg,
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const char *const r,
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const char *const f)
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{
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const u32 bits = *reg;
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if (bits)
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*reg = bits;
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printf("ahci: %s: %s == 0x%08x\n", f, r, bits);
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return bits;
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}
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#define ahci_clear_status(p, r) _ahci_clear_status(&(p)->r, #r, __func__)
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#else
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static inline u32 _ahci_clear_status(volatile u32 *const reg)
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{
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const u32 bits = *reg;
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if (bits)
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*reg = bits;
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return bits;
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}
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#define ahci_clear_status(p, r) _ahci_clear_status(&(p)->r)
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#endif
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static inline int ahci_port_is_active(const hba_port_t *const port)
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{
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return (port->sata_status & (HBA_PxSSTS_IPM_MASK | HBA_PxSSTS_DET_MASK))
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== (HBA_PxSSTS_IPM_ACTIVE | HBA_PxSSTS_DET_ESTABLISHED);
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}
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static int ahci_cmdengine_start(hba_port_t *const port)
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{
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/* Wait for the controller to clear CR.
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This shouldn't take too long, but we should time out nevertheless. */
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int timeout = 1000; /* Time out after 1000 * 1us == 1ms. */
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while ((port->cmd_stat & HBA_PxCMD_CR) && timeout--)
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udelay(1);
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if (timeout < 0) {
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printf("ahci: Timeout during start of command engine.\n");
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return 1;
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}
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port->cmd_stat |= HBA_PxCMD_FRE;
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port->cmd_stat |= HBA_PxCMD_ST;
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return 0;
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}
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static int ahci_cmdengine_stop(hba_port_t *const port)
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{
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port->cmd_stat &= ~HBA_PxCMD_ST;
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/* Wait for the controller to clear FR and CR.
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This shouldn't take too long, but we should time out nevertheless. */
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int timeout = 1000; /* Time out after 1000 * 1us == 1ms. */
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while ((port->cmd_stat & (HBA_PxCMD_FR | HBA_PxCMD_CR)) && timeout--)
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udelay(1);
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if (timeout < 0) {
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printf("ahci: Timeout during stopping of command engine.\n");
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return 1;
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}
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port->cmd_stat &= ~HBA_PxCMD_FRE;
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return 0;
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}
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/** Do minimal error recovery. */
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static int ahci_error_recovery(ahci_dev_t *const dev, const u32 intr_status)
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{
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/* Command engine has to be restarted.
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We don't call ahci_cmdengine_stop() here as it also checks
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HBA_PxCMD_FR which won't clear on fatal errors. */
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dev->port->cmd_stat &= ~HBA_PxCMD_ST;
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/* Always clear sata_error. */
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ahci_clear_status(dev->port, sata_error);
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/* Perform COMRESET if appropriate. */
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const u32 tfd = dev->port->taskfile_data;
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if ((tfd & (HBA_PxTFD_BSY | HBA_PxTFD_DRQ)) |
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(intr_status & HBA_PxIS_PCS)) {
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const u32 sctl = dev->port->sata_control & ~HBA_PxSCTL_DET_MASK;
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dev->port->sata_control = sctl | HBA_PxSCTL_DET_COMRESET;
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mdelay(1);
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dev->port->sata_control = sctl;
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}
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if (ahci_port_is_active(dev->port))
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/* Start command engine. */
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return ahci_cmdengine_start(dev->port);
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else
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return -1;
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}
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/** Give a buffer with even address. */
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static u8 *ahci_prdbuf_init(ahci_dev_t *const dev,
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u8 *const user_buf, const size_t len,
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const int out)
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{
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if ((u32)user_buf & 1) {
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printf("ahci: Odd buffer pointer (%p).\n", user_buf);
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if (dev->buf) /* orphaned buffer */
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free((void *)dev->buf - *(dev->buf - 1));
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dev->buf = malloc(len + 2);
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if (!dev->buf)
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return NULL;
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dev->user_buf = user_buf;
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dev->write_back = !out;
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dev->buflen = len;
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if ((u32)dev->buf & 1) {
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dev->buf[0] = 1;
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dev->buf += 1;
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} else {
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dev->buf[0] = 1;
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dev->buf[1] = 2;
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dev->buf += 2;
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}
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if (out)
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memcpy(dev->buf, user_buf, len);
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return dev->buf;
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} else {
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return user_buf;
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}
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}
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static void ahci_prdbuf_finalize(ahci_dev_t *const dev)
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{
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if (dev->buf) {
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if (dev->write_back)
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memcpy(dev->user_buf, dev->buf, dev->buflen);
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free((void *)dev->buf - *(dev->buf - 1));
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}
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dev->buf = NULL;
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dev->user_buf = NULL;
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dev->write_back = 0;
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dev->buflen = 0;
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}
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static ssize_t ahci_cmdslot_exec(ahci_dev_t *const dev)
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{
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const int slotnum = 0; /* We always use the first slot. */
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if (!(dev->port->cmd_stat & HBA_PxCMD_CR))
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return -1;
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/* Trigger command execution. */
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dev->port->cmd_issue |= (1 << slotnum);
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/* Wait for the controller to finish command execution. */
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int timeout = 50000; /* Time out after 50000 * 100us == 5s. */
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while ((dev->port->cmd_issue & (1 << slotnum)) &&
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!(dev->port->intr_status & HBA_PxIS_TFES) &&
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timeout--)
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udelay(100);
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if (timeout < 0) {
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printf("ahci: Timeout during command execution.\n");
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return -1;
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}
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ahci_prdbuf_finalize(dev);
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const u32 intr_status = ahci_clear_status(dev->port, intr_status);
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if (intr_status & (HBA_PxIS_FATAL | HBA_PxIS_PCS)) {
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ahci_error_recovery(dev, intr_status);
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return -1;
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} else {
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return dev->cmdlist[slotnum].prd_bytes;
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}
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}
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static size_t ahci_cmdslot_prepare(ahci_dev_t *const dev,
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u8 *const user_buf, size_t buf_len,
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const int out)
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{
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const int slotnum = 0; /* We always use the first slot. */
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size_t read_count = 0;
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memset((void *)&dev->cmdlist[slotnum],
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'\0', sizeof(dev->cmdlist[slotnum]));
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memset((void *)dev->cmdtable,
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'\0', sizeof(*dev->cmdtable));
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dev->cmdlist[slotnum].cmd = CMD_CFL(FIS_H2D_FIS_LEN);
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dev->cmdlist[slotnum].cmdtable_base = virt_to_phys(dev->cmdtable);
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if (buf_len > 0) {
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size_t prdt_len;
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u8 *buf;
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int i;
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prdt_len = ((buf_len - 1) >> BYTES_PER_PRD_SHIFT) + 1;
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const size_t max_prdt_len = ARRAY_SIZE(dev->cmdtable->prdt);
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if (prdt_len > max_prdt_len) {
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prdt_len = max_prdt_len;
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buf_len = prdt_len << BYTES_PER_PRD_SHIFT;
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}
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dev->cmdlist[slotnum].prdt_length = prdt_len;
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read_count = buf_len;
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buf = ahci_prdbuf_init(dev, user_buf, buf_len, out);
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if (!buf)
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return 0;
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for (i = 0; i < prdt_len; ++i) {
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const size_t bytes =
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(buf_len < BYTES_PER_PRD)
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? buf_len : BYTES_PER_PRD;
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dev->cmdtable->prdt[i].data_base = virt_to_phys(buf);
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dev->cmdtable->prdt[i].flags = PRD_TABLE_BYTES(bytes);
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buf_len -= bytes;
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buf += bytes;
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}
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}
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return read_count;
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}
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static ssize_t ahci_ata_read_sectors(ata_dev_t *const ata_dev,
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const lba_t start, size_t count,
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u8 *const buf)
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{
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ahci_dev_t *const dev = (ahci_dev_t *)ata_dev;
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if (count == 0)
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return 0;
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if (ata_dev->read_cmd == ATA_READ_DMA) {
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if (start >= (1 << 28)) {
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printf("ahci: Sector is not 28-bit addressable.\n");
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return -1;
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} else if (count > 256) {
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printf("ahci: Sector count too high (max. 256).\n");
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count = 256;
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}
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#ifdef CONFIG_STORAGE_64BIT_LBA
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} else if (ata_dev->read_cmd == ATA_READ_DMA_EXT) {
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if (start >= (1ULL << 48)) {
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printf("ahci: Sector is not 48-bit addressable.\n");
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return -1;
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} else if (count > (64 * 1024)) {
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printf("ahci: Sector count too high (max. 65536).\n");
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count = 64 * 1024;
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}
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#endif
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} else {
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printf("ahci: Unsupported ATA read command (0x%x).\n",
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ata_dev->read_cmd);
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return -1;
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}
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const size_t bytes = count << ata_dev->sector_size_shift;
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const size_t bytes_feasible = ahci_cmdslot_prepare(dev, buf, bytes, 0);
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const size_t sectors = bytes_feasible >> ata_dev->sector_size_shift;
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dev->cmdtable->fis[ 0] = FIS_HOST_TO_DEVICE;
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dev->cmdtable->fis[ 1] = FIS_H2D_CMD;
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dev->cmdtable->fis[ 2] = ata_dev->read_cmd;
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dev->cmdtable->fis[ 4] = (start >> 0) & 0xff;
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dev->cmdtable->fis[ 5] = (start >> 8) & 0xff;
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dev->cmdtable->fis[ 6] = (start >> 16) & 0xff;
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dev->cmdtable->fis[ 7] = FIS_H2D_DEV_LBA;
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dev->cmdtable->fis[ 8] = (start >> 24) & 0xff;
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#ifdef CONFIG_STORAGE_64BIT_LBA
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if (ata_dev->read_cmd == ATA_READ_DMA_EXT) {
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dev->cmdtable->fis[ 9] = (start >> 32) & 0xff;
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dev->cmdtable->fis[10] = (start >> 40) & 0xff;
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}
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#endif
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dev->cmdtable->fis[12] = (sectors >> 0) & 0xff;
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dev->cmdtable->fis[13] = (sectors >> 8) & 0xff;
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if (ahci_cmdslot_exec(dev) < 0)
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return -1;
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else
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return dev->cmdlist->prd_bytes >> ata_dev->sector_size_shift;
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}
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static ssize_t ahci_packet_read_cmd(atapi_dev_t *const _dev,
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const u8 *const cmd, const size_t cmdlen,
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u8 *const buf, const size_t buflen)
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{
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ahci_dev_t *const dev = (ahci_dev_t *)_dev;
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if ((cmdlen != 12) && (cmdlen != 16)) {
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printf("ahci: Only 12- and 16-byte packet commands allowed.\n");
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return -1;
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}
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const size_t len = ahci_cmdslot_prepare(dev, buf, buflen, 0);
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u16 byte_limit = MIN(len, 63 * 1024); /* like Linux */
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if (byte_limit & 1) ++byte_limit; /* even limit */
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dev->cmdlist[0].cmd |= CMD_ATAPI;
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dev->cmdtable->fis[0] = FIS_HOST_TO_DEVICE;
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dev->cmdtable->fis[1] = FIS_H2D_CMD;
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dev->cmdtable->fis[2] = ATA_PACKET;
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dev->cmdtable->fis[5] = byte_limit & 0xff;
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dev->cmdtable->fis[6] = byte_limit >> 8;
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memcpy((void *)dev->cmdtable->atapi_cmd, cmd, cmdlen);
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return ahci_cmdslot_exec(dev);
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}
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static int ahci_identify_device(ata_dev_t *const ata_dev, u8 *const buf)
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{
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ahci_dev_t *const dev = (ahci_dev_t *)ata_dev;
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ahci_cmdslot_prepare(dev, buf, 512, 0);
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dev->cmdtable->fis[0] = FIS_HOST_TO_DEVICE;
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dev->cmdtable->fis[1] = FIS_H2D_CMD;
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dev->cmdtable->fis[2] = ata_dev->identify_cmd;
|
||||
|
||||
if ((ahci_cmdslot_exec(dev) < 0) || (dev->cmdlist->prd_bytes != 512))
|
||||
return -1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ahci_dev_init(hba_ctrl_t *const ctrl,
|
||||
hba_port_t *const port,
|
||||
const int portnum)
|
||||
{
|
||||
int ret = 1;
|
||||
|
||||
const int ncs = HBA_CAPS_DECODE_NCS(ctrl->caps);
|
||||
|
||||
/* Allocate command list, one command table and received FIS. */
|
||||
cmd_t *const cmdlist = memalign(1024, ncs * sizeof(cmd_t));
|
||||
cmdtable_t *const cmdtable = memalign(128, sizeof(cmdtable_t));
|
||||
rcvd_fis_t *const rcvd_fis = memalign(256, sizeof(rcvd_fis_t));
|
||||
/* Allocate our device structure. */
|
||||
ahci_dev_t *const dev = calloc(1, sizeof(ahci_dev_t));
|
||||
if (!cmdlist || !cmdtable || !rcvd_fis || !dev)
|
||||
goto _cleanup_ret;
|
||||
memset((void *)cmdlist, '\0', ncs * sizeof(cmd_t));
|
||||
memset((void *)cmdtable, '\0', sizeof(*cmdtable));
|
||||
memset((void *)rcvd_fis, '\0', sizeof(*rcvd_fis));
|
||||
|
||||
/* Set command list base and received FIS base. */
|
||||
if (ahci_cmdengine_stop(port))
|
||||
return 1;
|
||||
port->cmdlist_base = virt_to_phys(cmdlist);
|
||||
port->frameinfo_base = virt_to_phys(rcvd_fis);
|
||||
if (ahci_cmdengine_start(port))
|
||||
return 1;
|
||||
/* Put port into active state. */
|
||||
port->cmd_stat |= HBA_PxCMD_ICC_ACTIVE;
|
||||
|
||||
dev->ctrl = ctrl;
|
||||
dev->port = port;
|
||||
dev->cmdlist = cmdlist;
|
||||
dev->cmdtable = cmdtable;
|
||||
dev->rcvd_fis = rcvd_fis;
|
||||
|
||||
/* Wait for D2H Register FIS with device' signature. */
|
||||
int timeout = 200; /* Time out after 200 * 10ms == 2s. */
|
||||
while ((port->taskfile_data & HBA_PxTFD_BSY) && timeout--)
|
||||
mdelay(10);
|
||||
|
||||
/* Initialize device or fall through to clean up. */
|
||||
switch (port->signature) {
|
||||
case HBA_PxSIG_ATA:
|
||||
printf("ahci: ATA drive on port #%d.\n", portnum);
|
||||
#ifdef CONFIG_STORAGE_ATA
|
||||
dev->ata_dev.identify = ahci_identify_device;
|
||||
dev->ata_dev.read_sectors = ahci_ata_read_sectors;
|
||||
return ata_attach_device(&dev->ata_dev, PORT_TYPE_SATA);
|
||||
#endif
|
||||
break;
|
||||
case HBA_PxSIG_ATAPI:
|
||||
printf("ahci: ATAPI drive on port #%d.\n", portnum);
|
||||
#ifdef CONFIG_STORAGE_ATAPI
|
||||
dev->atapi_dev.identify = ahci_identify_device;
|
||||
dev->atapi_dev.packet_read_cmd = ahci_packet_read_cmd;
|
||||
return atapi_attach_device(&dev->atapi_dev, PORT_TYPE_SATA);
|
||||
#endif
|
||||
break;
|
||||
default:
|
||||
printf("ahci: Unsupported device (signature == 0x%08x) "
|
||||
"on port #%d.\n", port->signature, portnum);
|
||||
break;
|
||||
}
|
||||
ret = 2;
|
||||
|
||||
_cleanup_ret:
|
||||
/* Clean up (not reached for initialized devices). */
|
||||
if (dev)
|
||||
free(dev);
|
||||
if (!ahci_cmdengine_stop(port)) {
|
||||
port->cmdlist_base = 0;
|
||||
port->frameinfo_base = 0;
|
||||
if (rcvd_fis)
|
||||
free((void *)rcvd_fis);
|
||||
if (cmdtable)
|
||||
free((void *)cmdtable);
|
||||
if (cmdlist)
|
||||
free((void *)cmdlist);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void ahci_port_probe(hba_ctrl_t *const ctrl,
|
||||
hba_port_t *const port,
|
||||
const int portnum)
|
||||
{
|
||||
/* If staggered spin-up is supported, spin-up device. */
|
||||
if (ctrl->caps & HBA_CAPS_SSS) {
|
||||
port->cmd_stat |= HBA_PxCMD_SUD;
|
||||
}
|
||||
|
||||
/* Wait 1s if we just told the device to spin up or
|
||||
if it's the first port. */
|
||||
if ((ctrl->caps & HBA_CAPS_SSS) ||
|
||||
!(ctrl->ports_impl & ((1 << (portnum - 1)) - 1))) {
|
||||
/* Wait for port to become active. */
|
||||
int timeout = 100; /* Time out after 100 * 100us == 10ms. */
|
||||
while (!ahci_port_is_active(port) && timeout--)
|
||||
udelay(100);
|
||||
}
|
||||
if (!ahci_port_is_active(port))
|
||||
return;
|
||||
|
||||
ahci_clear_status(port, sata_error);
|
||||
ahci_clear_status(port, intr_status);
|
||||
|
||||
ahci_dev_init(ctrl, port, portnum);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_STORAGE_AHCI_ONLY_TESTED
|
||||
static u32 working_controllers[] = {
|
||||
0x8086 | 0x2929 << 16,
|
||||
};
|
||||
#endif
|
||||
static void ahci_init_pci(pcidev_t dev)
|
||||
{
|
||||
int i;
|
||||
|
||||
const u16 class = pci_read_config16(dev, 0xa);
|
||||
if (class != 0x0106)
|
||||
return;
|
||||
const u16 vendor = pci_read_config16(dev, 0x00);
|
||||
const u16 device = pci_read_config16(dev, 0x02);
|
||||
|
||||
#ifdef CONFIG_STORAGE_AHCI_ONLY_TESTED
|
||||
const u32 vendor_device = pci_read_config32(dev, 0x0);
|
||||
for (i = 0; i < ARRAY_SIZE(working_controllers); ++i)
|
||||
if (vendor_device == working_controllers[i])
|
||||
break;
|
||||
if (i == ARRAY_SIZE(working_controllers)) {
|
||||
printf("ahci: Not using untested SATA controller "
|
||||
"%02x:%02x.%02x (%04x:%04x).\n", PCI_BUS(dev),
|
||||
PCI_SLOT(dev), PCI_FUNC(dev), vendor, device);
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
|
||||
printf("ahci: Found SATA controller %02x:%02x.%02x (%04x:%04x).\n",
|
||||
PCI_BUS(dev), PCI_SLOT(dev), PCI_FUNC(dev), vendor, device);
|
||||
|
||||
hba_ctrl_t *const ctrl = phys_to_virt(
|
||||
pci_read_config32(dev, 0x24) & ~0x3ff);
|
||||
hba_port_t *const ports = ctrl->ports;
|
||||
|
||||
/* Reset host controller. */
|
||||
ctrl->global_ctrl |= HBA_CTRL_RESET;
|
||||
/* Reset has to be finished after 1s. */
|
||||
delay(1);
|
||||
if (ctrl->global_ctrl & HBA_CTRL_RESET) {
|
||||
printf("ahci: ERROR: "
|
||||
"Controller reset didn't finish within 1s.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* Set AHCI access mode. */
|
||||
ctrl->global_ctrl |= HBA_CTRL_AHCI_EN;
|
||||
|
||||
/* Probe for devices. */
|
||||
for (i = 0; i < 32; ++i) {
|
||||
if (ctrl->ports_impl & (1 << i))
|
||||
ahci_port_probe(ctrl, &ports[i], i + 1);
|
||||
}
|
||||
}
|
||||
|
||||
void ahci_initialize(void)
|
||||
{
|
||||
int bus, dev, func;
|
||||
|
||||
for (bus = 0; bus < 256; ++bus) {
|
||||
for (dev = 0; dev < 32; ++dev) {
|
||||
const u16 class =
|
||||
pci_read_config16(PCI_DEV(bus, dev, 0), 0xa);
|
||||
if (class != 0xffff) {
|
||||
for (func = 0; func < 8; ++func)
|
||||
ahci_init_pci(PCI_DEV(bus, dev, func));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,201 @@
|
|||
/*
|
||||
* This file is part of the libpayload project.
|
||||
*
|
||||
* Copyright (C) 2012 secunet Security Networks AG
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef _AHCI_PRIVATE_H
|
||||
#define _AHCI_PRIVATE_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include <storage/ata.h>
|
||||
#include <storage/atapi.h>
|
||||
|
||||
typedef volatile struct {
|
||||
u64 cmdlist_base;
|
||||
u64 frameinfo_base;
|
||||
u32 intr_status;
|
||||
u32 intr_enable;
|
||||
u32 cmd_stat;
|
||||
u32 _reserved0;
|
||||
u32 taskfile_data;
|
||||
u32 signature;
|
||||
u32 sata_status;
|
||||
u32 sata_control;
|
||||
u32 sata_error;
|
||||
u32 sata_active;
|
||||
u32 cmd_issue;
|
||||
u32 sata_notify;
|
||||
u32 fis_based_switch;
|
||||
u32 _reserved1[11];
|
||||
u32 _vendor[4];
|
||||
} hba_port_t;
|
||||
|
||||
#define HBA_PxIS_TFES (1 << 30) /* TFES - Task File Error Status */
|
||||
#define HBA_PxIS_HBFS (1 << 29) /* HBFS - Host Bus Fatal Error Status */
|
||||
#define HBA_PxIS_HBDS (1 << 28) /* HBDS - Host Bus Data Error Status */
|
||||
#define HBA_PxIS_IFS (1 << 27) /* IFS - Interface Fatal Error Status */
|
||||
#define HBA_PxIS_FATAL (HBA_PxIS_TFES | HBA_PxIS_HBFS | \
|
||||
HBA_PxIS_HBDS | HBA_PxIS_IFS)
|
||||
#define HBA_PxIS_PCS (1 << 6) /* PCS - Port Connect Change Status */
|
||||
|
||||
#define HBA_PxCMD_ICC_SHIFT 28
|
||||
#define HBA_PxCMD_ICC_MASK (0xf << HBA_PxCMD_ICC_SHIFT)
|
||||
#define HBA_PxCMD_ICC_ACTIVE (0x1 << HBA_PxCMD_ICC_SHIFT)
|
||||
#define HBA_PxCMD_CR (1 << 15) /* CR - Command list Running */
|
||||
#define HBA_PxCMD_FR (1 << 14) /* FR - FIS receive Running */
|
||||
#define HBA_PxCMD_FRE (1 << 4) /* FRE - FIS Receive Enable */
|
||||
#define HBA_PxCMD_SUD (1 << 1) /* SUD - Spin-Up Device */
|
||||
#define HBA_PxCMD_ST (1 << 0) /* ST - Start (command processing) */
|
||||
|
||||
#define HBA_PxTFD_BSY (1 << 7)
|
||||
#define HBA_PxTFD_DRQ (1 << 3)
|
||||
|
||||
#define HBA_PxSSTS_IPM_SHIFT 8
|
||||
#define HBA_PxSSTS_IPM_MASK (0xf << HBA_PxSSTS_IPM_SHIFT)
|
||||
#define HBA_PxSSTS_IPM_ACTIVE (1 << HBA_PxSSTS_IPM_SHIFT)
|
||||
#define HBA_PxSSTS_DET_SHIFT 0
|
||||
#define HBA_PxSSTS_DET_MASK (0xf << HBA_PxSSTS_DET_SHIFT)
|
||||
#define HBA_PxSSTS_DET_ESTABLISHED (3 << HBA_PxSSTS_DET_SHIFT)
|
||||
|
||||
#define HBA_PxSCTL_DET_SHIFT 0
|
||||
#define HBA_PxSCTL_DET_MASK (0xf << HBA_PxSCTL_DET_SHIFT)
|
||||
#define HBA_PxSCTL_DET_COMRESET (0x1 << HBA_PxSCTL_DET_SHIFT)
|
||||
|
||||
#define HBA_PxSIG_ATA 0x00000101 /* SATA drive */
|
||||
#define HBA_PxSIG_ATAPI 0xeb140101 /* SATAPI drive */
|
||||
#define HBA_PxSIG_SEMB 0xc33c0101 /* Enclosure management bridge */
|
||||
#define HBA_PxSIG_PM 0x96690101 /* Port multiplier */
|
||||
|
||||
typedef volatile struct {
|
||||
u32 caps;
|
||||
u32 global_ctrl;
|
||||
u32 intr_status;
|
||||
u32 ports_impl;
|
||||
u32 version;
|
||||
u32 ccc_ctrl; /* CCC - Command Completion Coalescing */
|
||||
u32 ccc_ports;
|
||||
u32 em_location; /* EM - Enclosure Management */
|
||||
u32 em_ctrl;
|
||||
u32 ext_caps;
|
||||
u32 handoff_ctrl_stat;
|
||||
u32 _reserved0[13];
|
||||
u32 _reserved_nvmchi[16];
|
||||
u32 _vendor[24];
|
||||
hba_port_t ports[32];
|
||||
} hba_ctrl_t;
|
||||
|
||||
#define HBA_CAPS_SSS (1 << 27) /* SSS - Supports Staggered Spin-up */
|
||||
#define HBA_CAPS_NCS_SHIFT 8 /* NCS - Number of Command Slots */
|
||||
#define HBA_CAPS_NCS_MASK (0x1f << HBA_CAPS_NCS_SHIFT)
|
||||
|
||||
#define HBA_CAPS_DECODE_NCS(caps) (((caps & HBA_CAPS_NCS_MASK) \
|
||||
>> HBA_CAPS_NCS_SHIFT) \
|
||||
+ 1)
|
||||
|
||||
#define HBA_CTRL_AHCI_EN (1 << 31)
|
||||
#define HBA_CTRL_INTR_EN (1 << 1)
|
||||
#define HBA_CTRL_RESET (1 << 0)
|
||||
|
||||
|
||||
typedef volatile struct {
|
||||
u8 dma_setup_fis[28];
|
||||
u8 _reserved0[4];
|
||||
u8 pio_setup_fis[20];
|
||||
u8 _reserved1[12];
|
||||
u8 d2h_register_fis[20];
|
||||
u8 _reserved2[4];
|
||||
u8 set_device_bits_fis[8];
|
||||
u8 unknown_fis[64];
|
||||
u8 _reserved3[96];
|
||||
} rcvd_fis_t;
|
||||
|
||||
typedef volatile struct {
|
||||
u16 cmd;
|
||||
u16 prdt_length;
|
||||
u32 prd_bytes;
|
||||
u64 cmdtable_base;
|
||||
u8 _reserved[16];
|
||||
} cmd_t;
|
||||
|
||||
#define CMD_PMP_SHIFT 12 /* PMP - Port Multiplier Port */
|
||||
#define CMD_PMP_MASK (0xf << CMD_PMP_SHIFT)
|
||||
#define CMD_PMP(x) ((x << CMD_PMP_SHIFT) & CMD_PMP_MASK)
|
||||
#define CMD_CBuROK (1 << 10) /* C - Clear Busy upon R_OK */
|
||||
#define CMD_BIST (1 << 9) /* B - BIST - Built-In Selft Test */
|
||||
#define CMD_RESET (1 << 8) /* R - Reset */
|
||||
#define CMD_PREFETCH (1 << 7) /* P - Prefetch (PRDTs or ATAPI cmd) */
|
||||
#define CMD_WRITE (1 << 6) /* W - Write (host to device) */
|
||||
#define CMD_ATAPI (1 << 5) /* A - ATAPI cmd */
|
||||
#define CMD_CFL_SHIFT 0 /* CFL - Command FIS Length */
|
||||
#define CMD_CFL_MASK (0xf << CMD_CFL_SHIFT)
|
||||
#define CMD_CFL(x) ((((x) >> 2) << CMD_CFL_SHIFT) & CMD_CFL_MASK)
|
||||
|
||||
typedef volatile struct {
|
||||
u8 fis[64];
|
||||
u8 atapi_cmd[16];
|
||||
u8 _reserved0[48];
|
||||
struct {
|
||||
u64 data_base;
|
||||
u32 _reserved0;
|
||||
u32 flags;
|
||||
} prdt[8]; /* Can be up to 65,535 prds,
|
||||
but implementation needs multiple of 128 bytes. */
|
||||
} cmdtable_t;
|
||||
|
||||
#define BYTES_PER_PRD_SHIFT 20
|
||||
#define BYTES_PER_PRD (4 << 20)
|
||||
|
||||
enum {
|
||||
FIS_HOST_TO_DEVICE = 0x27,
|
||||
};
|
||||
#define FIS_H2D_CMD (1 << 7)
|
||||
#define FIS_H2D_FIS_LEN 20
|
||||
#define FIS_H2D_DEV_LBA (1 << 6)
|
||||
|
||||
#define PRD_TABLE_I (1 << 31) /* I - Interrupt on Completion */
|
||||
#define PRD_TABLE_BYTES_MASK 0x3fffff
|
||||
#define PRD_TABLE_BYTES(x) (((x) - 1) & PRD_TABLE_BYTES_MASK)
|
||||
|
||||
typedef struct {
|
||||
union {
|
||||
ata_dev_t ata_dev;
|
||||
atapi_dev_t atapi_dev;
|
||||
};
|
||||
|
||||
hba_ctrl_t *ctrl;
|
||||
hba_port_t *port;
|
||||
|
||||
cmd_t *cmdlist;
|
||||
cmdtable_t *cmdtable;
|
||||
rcvd_fis_t *rcvd_fis;
|
||||
|
||||
u8 *buf, *user_buf;
|
||||
int write_back;
|
||||
size_t buflen;
|
||||
} ahci_dev_t;
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,233 @@
|
|||
/*
|
||||
* This file is part of the libpayload project.
|
||||
*
|
||||
* Copyright (C) 2012 secunet Security Networks AG
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <libpayload.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include <storage/ata.h>
|
||||
|
||||
|
||||
/** Reads non-sector-aligned blocks of 512 bytes. */
|
||||
static ssize_t ata_read_unaligned(ata_dev_t *const dev,
|
||||
const lba_t blk_start, size_t blk_count,
|
||||
u8 *blk_buf)
|
||||
{
|
||||
ssize_t ret = 0;
|
||||
lba_t sec_start;
|
||||
size_t blk_residue;
|
||||
|
||||
u8 *const sec_buf = malloc(dev->sector_size);
|
||||
if (sec_buf == NULL)
|
||||
return -1;
|
||||
|
||||
const size_t shift = dev->sector_size_shift - 9;
|
||||
const size_t mask = (dev->sector_size >> 9) - 1;
|
||||
|
||||
/* Sector aligned start block. */
|
||||
const lba_t blk_aligned = blk_start & ~mask;
|
||||
|
||||
/* First sector to read from. */
|
||||
sec_start = blk_aligned >> shift;
|
||||
|
||||
/* Calculate and read residue before sector aligned blocks. */
|
||||
blk_residue = MIN(blk_start - blk_aligned, blk_count);
|
||||
if (blk_residue) {
|
||||
if (dev->read_sectors(dev, sec_start, 1, sec_buf) != 1)
|
||||
goto _free_ret;
|
||||
|
||||
const size_t bytes = blk_residue << 9;
|
||||
memcpy(blk_buf, sec_buf + (dev->sector_size - bytes), bytes);
|
||||
blk_count -= blk_residue;
|
||||
blk_buf += bytes;
|
||||
++sec_start;
|
||||
|
||||
ret = blk_residue;
|
||||
if (blk_count == 0)
|
||||
goto _free_ret;
|
||||
}
|
||||
|
||||
/* Read all sector aligned blocks. */
|
||||
const size_t sec_count = (blk_count & ~mask) >> shift;
|
||||
const int sec_read = dev->read_sectors(
|
||||
dev, sec_start, sec_count, blk_buf);
|
||||
if (sec_read < 0)
|
||||
goto _free_ret;
|
||||
ret += sec_read << shift;
|
||||
if (sec_read != sec_count)
|
||||
goto _free_ret;
|
||||
|
||||
/* Calculate and read residue. */
|
||||
blk_residue = blk_count & mask;
|
||||
if (blk_residue) {
|
||||
sec_start += sec_read;
|
||||
blk_buf += sec_read << dev->sector_size_shift;
|
||||
|
||||
if (dev->read_sectors(dev, sec_start, 1, sec_buf) != 1)
|
||||
goto _free_ret;
|
||||
|
||||
const size_t bytes = blk_residue << 9;
|
||||
memcpy(blk_buf, sec_buf, bytes);
|
||||
ret += blk_residue;
|
||||
}
|
||||
|
||||
_free_ret:
|
||||
free(sec_buf);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static ssize_t ata_read512(storage_dev_t *_dev,
|
||||
const lba_t start, const size_t count,
|
||||
unsigned char *const buf)
|
||||
{
|
||||
ata_dev_t *const dev = (ata_dev_t *)_dev;
|
||||
|
||||
if (dev->read_sectors == NULL) {
|
||||
printf("ata: No read support implemented.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (dev->sector_size == 512) {
|
||||
return dev->read_sectors(dev, start, count, buf);
|
||||
} else if (dev->sector_size > 512) {
|
||||
/* Sector size has to be a power of two. */
|
||||
const size_t mask = (dev->sector_size >> 9) - 1;
|
||||
if (!(start & mask) && !(count & mask)) {
|
||||
const size_t shift = dev->sector_size_shift - 9;
|
||||
const ssize_t ret = dev->read_sectors(dev,
|
||||
start >> shift, count >> shift, buf);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
else
|
||||
return ret << shift;
|
||||
} else {
|
||||
return ata_read_unaligned(dev, start, count, buf);
|
||||
}
|
||||
} else {
|
||||
printf("ata: No support for sectors smaller than 512 bytes.\n");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
static ssize_t ata_write512(storage_dev_t *const dev,
|
||||
const lba_t start, const size_t count,
|
||||
const unsigned char *const buf)
|
||||
{
|
||||
printf("ata: No write support implemented.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
void ata_initialize_storage_ops(ata_dev_t *const dev)
|
||||
{
|
||||
dev->storage_dev.read_blocks512 = ata_read512;
|
||||
dev->storage_dev.write_blocks512 = ata_write512;
|
||||
}
|
||||
|
||||
int ata_set_sector_size(ata_dev_t *const dev, u32 sector_size)
|
||||
{
|
||||
if (!sector_size || (sector_size & (sector_size - 1))) {
|
||||
printf("ata: Sector size is not a power of two (%u).\n",
|
||||
sector_size);
|
||||
return -1;
|
||||
}
|
||||
dev->sector_size = sector_size;
|
||||
dev->sector_size_shift = 0;
|
||||
while (sector_size >>= 1)
|
||||
++dev->sector_size_shift;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ata_decode_sector_size(ata_dev_t *const dev, const u16 *const id)
|
||||
{
|
||||
u32 size;
|
||||
if ((id[ATA_ID_SECTOR_SIZE] & ((3 << 14) | (1 << 12)))
|
||||
!= ((1 << 14) | (1 << 12)))
|
||||
size = DEFAULT_ATA_SECTOR_SIZE;
|
||||
else
|
||||
size = (id[ATA_ID_LOGICAL_SECTOR_SIZE] |
|
||||
(id[ATA_ID_LOGICAL_SECTOR_SIZE + 1] << 16)) << 1;
|
||||
|
||||
return ata_set_sector_size(dev, size);
|
||||
}
|
||||
|
||||
/**
|
||||
* Copies n-1 bytes from src to dest swapping each two bytes, removes
|
||||
* trailing spaces and terminates dest with '\0'.
|
||||
*/
|
||||
char *ata_strncpy(char *const dest, const u16 *const src, const size_t n)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < (n - 1); i += 2) {
|
||||
dest[i] = ((const char *)src)[i + 1];
|
||||
dest[i + 1] = ((const char *)src)[i];
|
||||
}
|
||||
|
||||
for (i = n - 2; i >= 0; --i)
|
||||
if (dest[i] != ' ')
|
||||
break;
|
||||
dest[i + 1] = '\0';
|
||||
|
||||
return dest;
|
||||
}
|
||||
|
||||
int ata_attach_device(ata_dev_t *const dev, const storage_port_t port_type)
|
||||
{
|
||||
u16 id[256];
|
||||
|
||||
dev->identify_cmd = ATA_IDENTIFY_DEVICE;
|
||||
if (dev->identify(dev, (u8 *)id))
|
||||
return -1;
|
||||
|
||||
char fw[9], model[41];
|
||||
ata_strncpy(fw, id + 23, sizeof(fw));
|
||||
ata_strncpy(model, id + 27, sizeof(model));
|
||||
printf("ata: Identified %s [%s]\n", model, fw);
|
||||
|
||||
#ifdef CONFIG_STORAGE_64BIT_LBA
|
||||
if (id[ATA_CMDS_AND_FEATURE_SETS + 1] & (1 << 10)) {
|
||||
printf("ata: Support for LBA-48 enabled.\n");
|
||||
dev->read_cmd = ATA_READ_DMA_EXT;
|
||||
} else {
|
||||
dev->read_cmd = ATA_READ_DMA;
|
||||
}
|
||||
#else
|
||||
dev->read_cmd = ATA_READ_DMA;
|
||||
#endif
|
||||
|
||||
if (ata_decode_sector_size(dev, id))
|
||||
return -1;
|
||||
|
||||
dev->storage_dev.port_type = port_type;
|
||||
ata_initialize_storage_ops(dev);
|
||||
|
||||
return storage_attach_device(&dev->storage_dev);
|
||||
}
|
||||
|
|
@ -0,0 +1,206 @@
|
|||
/*
|
||||
* This file is part of the libpayload project.
|
||||
*
|
||||
* Copyright (C) 2012 secunet Security Networks AG
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <libpayload.h>
|
||||
|
||||
#include <storage/ata.h>
|
||||
#include <storage/atapi.h>
|
||||
|
||||
|
||||
static int atapi_request_sense(atapi_dev_t *const dev)
|
||||
{
|
||||
u8 cdb[12] = { 0, };
|
||||
cdb[0] = ATAPI_REQUEST_SENSE;
|
||||
cdb[4] = sizeof(dev->sense_data);
|
||||
return dev->packet_read_cmd(dev, cdb, sizeof(cdb),
|
||||
dev->sense_data, sizeof(dev->sense_data));
|
||||
}
|
||||
|
||||
static ssize_t atapi_packet_read_cmd(atapi_dev_t *const dev,
|
||||
const u8 *const cmd, const size_t cmdlen,
|
||||
u8 *const buf, const size_t buflen)
|
||||
{
|
||||
int retries = 10;
|
||||
ssize_t ret;
|
||||
|
||||
do {
|
||||
ret = dev->packet_read_cmd(dev, cmd, cmdlen, buf, buflen);
|
||||
if (ret >= 0)
|
||||
return ret;
|
||||
|
||||
ret = atapi_request_sense(dev);
|
||||
if (ret < 0) {
|
||||
printf("atapi: Requesting sense failed.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
switch (dev->sense_data[2] & 0xf) {
|
||||
case ATAPI_SENSE_UNIT_ATTENTION:
|
||||
/* Nothing to do. */
|
||||
break;
|
||||
case ATAPI_SENSE_NOT_READY:
|
||||
switch (dev->sense_data[12]) {
|
||||
case ATAPI_ADDITIONAL_SENSE_LOGICAL_UNIT_NOT_READY:
|
||||
/* Device wants more time. */
|
||||
delay(3);
|
||||
break;
|
||||
case ATAPI_ADDITIONAL_SENSE_MEDIUM_NOT_PRESENT:
|
||||
printf("atapi: No medium present.\n");
|
||||
dev->medium_present = 0;
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
return -1;
|
||||
}
|
||||
} while (retries--);
|
||||
|
||||
/* No more retries. */
|
||||
return -1;
|
||||
}
|
||||
|
||||
static ssize_t atapi_packet_read_sectors(ata_dev_t *const _dev,
|
||||
const lba_t start, size_t count,
|
||||
u8 *const buf)
|
||||
{
|
||||
atapi_dev_t *const dev = (atapi_dev_t *)_dev;
|
||||
|
||||
if (start >= (1ULL << 32)) {
|
||||
printf("atapi: Sector is not 32-bit addressable.\n");
|
||||
return -1;
|
||||
} else if (count >= (64 * 1024)) {
|
||||
printf("ahci: Sector count too high (max. 65535).\n");
|
||||
count = (64 * 1024) - 1;
|
||||
}
|
||||
|
||||
u8 cdb[12] = { 0, };
|
||||
cdb[0] = ATAPI_READ_10;
|
||||
cdb[2] = (start >> 24) & 0xff;
|
||||
cdb[3] = (start >> 16) & 0xff;
|
||||
cdb[4] = (start >> 8) & 0xff;
|
||||
cdb[5] = (start >> 0) & 0xff;
|
||||
cdb[7] = (count >> 8) & 0xff;
|
||||
cdb[8] = (count >> 0) & 0xff;
|
||||
const ssize_t ret = atapi_packet_read_cmd(dev, cdb, sizeof(cdb),
|
||||
buf, count << dev->ata_dev.sector_size_shift);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
else
|
||||
return ret >> dev->ata_dev.sector_size_shift;
|
||||
}
|
||||
|
||||
static storage_poll_t atapi_poll(storage_dev_t *const _dev)
|
||||
{
|
||||
atapi_dev_t *const dev = (atapi_dev_t *)_dev;
|
||||
|
||||
u8 cdb[12] = { 0, };
|
||||
u8 capacity[8];
|
||||
|
||||
if (dev->medium_present)
|
||||
return POLL_MEDIUM_PRESENT;
|
||||
|
||||
cdb[0] = ATAPI_TEST_UNIT_READY;
|
||||
const int ret = atapi_packet_read_cmd(dev, cdb, sizeof(cdb), NULL, 0);
|
||||
if (!ret) {
|
||||
printf("atapi: Found medium.\n");
|
||||
dev->medium_present = 1;
|
||||
} else if (dev->medium_present) {
|
||||
return POLL_ERROR;
|
||||
}
|
||||
|
||||
if (dev->medium_present) {
|
||||
cdb[0] = ATAPI_START_STOP_UNIT;
|
||||
cdb[4] = 0x01; /* Start Disc, read TOC. */
|
||||
if (atapi_packet_read_cmd(dev, cdb, sizeof(cdb), NULL, 0))
|
||||
goto _error_ret;
|
||||
cdb[4] = 0x00;
|
||||
}
|
||||
|
||||
cdb[0] = ATAPI_PREVENT_ALLOW_MEDIUM_REMOVAL;
|
||||
cdb[2] = 0x02; /* Clear persistent prevent removal bit. */
|
||||
atapi_packet_read_cmd(dev, cdb, sizeof(cdb), NULL, 0);
|
||||
cdb[2] = 0x00; /* Clear prevent removal bit. */
|
||||
atapi_packet_read_cmd(dev, cdb, sizeof(cdb), NULL, 0);
|
||||
|
||||
/* If we don't have a medium, we're done. */
|
||||
if (!dev->medium_present)
|
||||
return POLL_NO_MEDIUM;
|
||||
|
||||
/* Read capacity and sector size. */
|
||||
cdb[0] = ATAPI_READ_CAPACITY;
|
||||
if (atapi_packet_read_cmd(dev, cdb, sizeof(cdb),
|
||||
(u8 *)capacity, sizeof(capacity))
|
||||
!= sizeof(capacity))
|
||||
goto _error_ret;
|
||||
const u32 sector_size = (capacity[4] << 24) |
|
||||
(capacity[5] << 16) |
|
||||
(capacity[6] << 8) |
|
||||
(capacity[7] << 0);
|
||||
if (ata_set_sector_size(&dev->ata_dev, sector_size)) {
|
||||
dev->medium_present = 0;
|
||||
return POLL_MEDIUM_ERROR;
|
||||
}
|
||||
|
||||
return POLL_MEDIUM_PRESENT;
|
||||
|
||||
_error_ret:
|
||||
dev->medium_present = 0;
|
||||
return POLL_ERROR;
|
||||
}
|
||||
|
||||
int atapi_attach_device(atapi_dev_t *const dev, const storage_port_t port_type)
|
||||
{
|
||||
u16 id[256];
|
||||
|
||||
dev->ata_dev.identify_cmd = ATA_IDENTIFY_PACKET_DEVICE;
|
||||
if (dev->identify(&dev->ata_dev, (u8 *)id))
|
||||
return -1;
|
||||
|
||||
char fw[9], model[41];
|
||||
ata_strncpy(fw, id + 23, sizeof(fw));
|
||||
ata_strncpy(model, id + 27, sizeof(model));
|
||||
printf("atapi: Identified %s [%s]\n", model, fw);
|
||||
|
||||
/* Initialize to sane values. */
|
||||
dev->ata_dev.sector_size = 2048;
|
||||
dev->ata_dev.sector_size_shift = 11;
|
||||
|
||||
dev->medium_present = 0;
|
||||
|
||||
/* Reuse ata procedures. */
|
||||
ata_initialize_storage_ops(&dev->ata_dev);
|
||||
|
||||
dev->ata_dev.read_sectors = atapi_packet_read_sectors;
|
||||
dev->ata_dev.storage_dev.port_type = port_type;
|
||||
dev->ata_dev.storage_dev.poll = atapi_poll;
|
||||
|
||||
return storage_attach_device(&dev->ata_dev.storage_dev);
|
||||
}
|
||||
|
|
@ -0,0 +1,111 @@
|
|||
/*
|
||||
* This file is part of the libpayload project.
|
||||
*
|
||||
* Copyright (C) 2012 secunet Security Networks AG
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <libpayload.h>
|
||||
#ifdef CONFIG_STORAGE_AHCI
|
||||
# include <storage/ahci.h>
|
||||
#endif
|
||||
#include <storage/storage.h>
|
||||
|
||||
|
||||
static storage_dev_t **devices = NULL;
|
||||
static size_t devices_length = 0;
|
||||
static size_t dev_count = 0;
|
||||
|
||||
int storage_attach_device(storage_dev_t *const dev)
|
||||
{
|
||||
if (dev_count == devices_length) {
|
||||
const size_t new_len =
|
||||
(0 == devices_length) ? 4 : devices_length << 1;
|
||||
storage_dev_t **const new_devices =
|
||||
realloc(devices, new_len * sizeof(storage_dev_t *));
|
||||
if (!new_devices)
|
||||
return -1;
|
||||
devices = new_devices;
|
||||
memset(devices + devices_length, '\0',
|
||||
(new_len - devices_length) * sizeof(storage_dev_t *));
|
||||
devices_length = new_len;
|
||||
}
|
||||
devices[dev_count++] = dev;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Probe for drive with given number
|
||||
*
|
||||
* Looks for a drive with number dev_num and polls for a medium
|
||||
* in the drive if appropriate.
|
||||
*
|
||||
* @dev_num device number counted from 0
|
||||
*/
|
||||
storage_poll_t storage_probe(const size_t dev_num)
|
||||
{
|
||||
if (dev_num >= dev_count)
|
||||
return POLL_NO_DEVICE;
|
||||
else if (devices[dev_num]->poll)
|
||||
return devices[dev_num]->poll(devices[dev_num]);
|
||||
else
|
||||
return POLL_MEDIUM_PRESENT;
|
||||
}
|
||||
|
||||
/**
|
||||
* Read 512-byte blocks
|
||||
*
|
||||
* Reads count blocks of 512 bytes from block start of drive dev_num
|
||||
* into buf.
|
||||
*
|
||||
* @dev_num device number counted from 0
|
||||
* @start number of first block to read from
|
||||
* @count number of blocks to read
|
||||
* @buf buffer where the read data should be written
|
||||
*/
|
||||
ssize_t storage_read_blocks512(const size_t dev_num,
|
||||
const lba_t start, const size_t count,
|
||||
unsigned char *const buf)
|
||||
{
|
||||
if ((dev_num < dev_count) && devices[dev_num]->read_blocks512)
|
||||
return devices[dev_num]->read_blocks512(
|
||||
devices[dev_num], start, count, buf);
|
||||
else
|
||||
return -1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Initializes storage controllers
|
||||
*
|
||||
* This function should be called once at startup to bring up supported
|
||||
* strorage controllers.
|
||||
*/
|
||||
void storage_initialize(void)
|
||||
{
|
||||
#ifdef CONFIG_STORAGE_AHCI
|
||||
ahci_initialize();
|
||||
#endif
|
||||
}
|
||||
|
|
@ -118,6 +118,13 @@ int nvram_updating(void);
|
|||
void rtc_read_clock(struct tm *tm);
|
||||
/** @} */
|
||||
|
||||
/**
|
||||
* @defgroup storage driver functions
|
||||
* @{
|
||||
*/
|
||||
void storage_initialize(void);
|
||||
/** @} */
|
||||
|
||||
/**
|
||||
* @defgroup usb USB functions
|
||||
* @{
|
||||
|
|
|
|||
|
|
@ -0,0 +1,35 @@
|
|||
/*
|
||||
* This file is part of the libpayload project.
|
||||
*
|
||||
* Copyright (C) 2012 secunet Security Networks AG
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef _STORAGE_AHCI_H
|
||||
#define _STORAGE_AHCI_H
|
||||
|
||||
void ahci_initialize(void);
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,77 @@
|
|||
/*
|
||||
* This file is part of the libpayload project.
|
||||
*
|
||||
* Copyright (C) 2012 secunet Security Networks AG
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef _STORAGE_ATA_H
|
||||
#define _STORAGE_ATA_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#include "storage.h"
|
||||
|
||||
|
||||
/* ATA commands */
|
||||
enum {
|
||||
ATA_READ_DMA = 0xc8,
|
||||
ATA_READ_DMA_EXT = 0x25,
|
||||
ATA_IDENTIFY_DEVICE = 0xec,
|
||||
ATA_PACKET = 0xa0,
|
||||
ATA_IDENTIFY_PACKET_DEVICE = 0xa1,
|
||||
};
|
||||
|
||||
/* 16-bit-word indices into id structure from ATA_IDENTIFY_DEVICE */
|
||||
enum {
|
||||
ATA_CMDS_AND_FEATURE_SETS = 82,
|
||||
ATA_ID_SECTOR_SIZE = 106,
|
||||
ATA_ID_LOGICAL_SECTOR_SIZE = 117,
|
||||
};
|
||||
|
||||
#define DEFAULT_ATA_SECTOR_SIZE 512
|
||||
|
||||
struct ata_dev;
|
||||
typedef struct ata_dev {
|
||||
storage_dev_t storage_dev;
|
||||
|
||||
int (*identify)(struct ata_dev *, u8 *buf);
|
||||
ssize_t (*read_sectors)(struct ata_dev *, lba_t start, size_t count, u8 *buf);
|
||||
|
||||
u8 read_cmd;
|
||||
u8 identify_cmd;
|
||||
size_t sector_size;
|
||||
size_t sector_size_shift;
|
||||
|
||||
void (*detach_device)(struct ata_dev *);
|
||||
} ata_dev_t;
|
||||
|
||||
int ata_attach_device(ata_dev_t *, storage_port_t);
|
||||
|
||||
char *ata_strncpy(char *dest, const u16 *src, size_t n);
|
||||
int ata_set_sector_size(ata_dev_t *, u32 sector_size);
|
||||
void ata_initialize_storage_ops(ata_dev_t *);
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,78 @@
|
|||
/*
|
||||
* This file is part of the libpayload project.
|
||||
*
|
||||
* Copyright (C) 2012 secunet Security Networks AG
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef _STORAGE_ATAPI_H
|
||||
#define _STORAGE_ATAPI_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#include "storage.h"
|
||||
#include "ata.h"
|
||||
|
||||
|
||||
/* ATAPI commands */
|
||||
enum {
|
||||
ATAPI_TEST_UNIT_READY = 0x00,
|
||||
ATAPI_REQUEST_SENSE = 0x03,
|
||||
ATAPI_START_STOP_UNIT = 0x1b,
|
||||
ATAPI_PREVENT_ALLOW_MEDIUM_REMOVAL = 0x1e,
|
||||
ATAPI_READ_CAPACITY = 0x25,
|
||||
ATAPI_READ_10 = 0x28,
|
||||
};
|
||||
|
||||
/* ATAPI sense codes */
|
||||
enum {
|
||||
ATAPI_SENSE_NOT_READY = 0x02,
|
||||
ATAPI_SENSE_UNIT_ATTENTION = 0x06,
|
||||
};
|
||||
|
||||
/* ATAPI additional sense codes (particularize the above) */
|
||||
enum {
|
||||
ATAPI_ADDITIONAL_SENSE_LOGICAL_UNIT_NOT_READY = 0x04,
|
||||
ATAPI_ADDITIONAL_SENSE_MEDIUM_NOT_PRESENT = 0x3a,
|
||||
};
|
||||
|
||||
struct atapi_dev;
|
||||
|
||||
typedef struct atapi_dev {
|
||||
/* Keep this at offset 0 so we can cast to ata_dev_t. */
|
||||
ata_dev_t ata_dev;
|
||||
|
||||
int (*identify)(struct ata_dev *, u8 *buf); /* yes, ata_dev_t */
|
||||
ssize_t (*packet_read_cmd)(struct atapi_dev *, const u8 *cmd, size_t cmdlen, u8 *buf, size_t buflen);
|
||||
|
||||
u8 sense_data[19]; /* We needed 19 in usbmsc.c. */
|
||||
u8 medium_present;
|
||||
|
||||
void (*detach_device)(struct atapi_dev *);
|
||||
} atapi_dev_t;
|
||||
|
||||
int atapi_attach_device(atapi_dev_t *, storage_port_t);
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,77 @@
|
|||
/*
|
||||
* This file is part of the libpayload project.
|
||||
*
|
||||
* Copyright (C) 2012 secunet Security Networks AG
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef _STORAGE_STORAGE_H
|
||||
#define _STORAGE_STORAGE_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include <unistd.h>
|
||||
|
||||
|
||||
#ifndef CONFIG_STORAGE_64BIT_LBA
|
||||
typedef u32 lba_t;
|
||||
#else
|
||||
typedef u64 lba_t;
|
||||
#endif
|
||||
|
||||
|
||||
typedef enum {
|
||||
PORT_TYPE_IDE = (1 << 0),
|
||||
PORT_TYPE_SATA = (1 << 1),
|
||||
PORT_TYPE_USB = (1 << 2),
|
||||
} storage_port_t;
|
||||
|
||||
typedef enum {
|
||||
POLL_MEDIUM_ERROR = -3,
|
||||
POLL_NO_DEVICE = -2,
|
||||
POLL_ERROR = -1,
|
||||
POLL_NO_MEDIUM = 0,
|
||||
POLL_MEDIUM_PRESENT = 1,
|
||||
} storage_poll_t;
|
||||
|
||||
|
||||
struct storage_dev;
|
||||
|
||||
typedef struct storage_dev {
|
||||
storage_port_t port_type;
|
||||
|
||||
storage_poll_t (*poll)(struct storage_dev *);
|
||||
ssize_t (*read_blocks512)(struct storage_dev *, lba_t start, size_t count, unsigned char *buf);
|
||||
ssize_t (*write_blocks512)(struct storage_dev *, lba_t start, size_t count, const unsigned char *buf);
|
||||
|
||||
void (*detach_device)(struct storage_dev *);
|
||||
} storage_dev_t;
|
||||
|
||||
int storage_attach_device(storage_dev_t *dev);
|
||||
|
||||
|
||||
storage_poll_t storage_probe(size_t dev_num);
|
||||
ssize_t storage_read_blocks512(size_t dev_num, lba_t start, size_t count, unsigned char *buf);
|
||||
|
||||
#endif
|
||||
|
|
@ -27,4 +27,13 @@
|
|||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef _UNISTD_H
|
||||
#define _UNISTD_H
|
||||
|
||||
#include <stddef.h>
|
||||
|
||||
typedef ptrdiff_t ssize_t;
|
||||
|
||||
int getpagesize(void);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue