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coreboot-kgpe-d16/payloads/libpayload/drivers/storage/ahci.c

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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>
2012-08-30 15:36:57 +02:00
/*
* 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.
*/
//#define DEBUG_STATUS
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <libpayload.h>
#include <pci.h>
#include <storage/ata.h>
#include <storage/ahci.h>
#include "ahci_private.h"
#ifdef DEBUG_STATUS
static inline u32 _ahci_clear_status(volatile u32 *const reg,
const char *const r,
const char *const f)
{
const u32 bits = *reg;
if (bits)
*reg = bits;
printf("ahci: %s: %s == 0x%08x\n", f, r, bits);
return bits;
}
#define ahci_clear_status(p, r) _ahci_clear_status(&(p)->r, #r, __func__)
#else
static inline u32 _ahci_clear_status(volatile u32 *const reg)
{
const u32 bits = *reg;
if (bits)
*reg = bits;
return bits;
}
#define ahci_clear_status(p, r) _ahci_clear_status(&(p)->r)
#endif
static inline int ahci_port_is_active(const hba_port_t *const port)
{
return (port->sata_status & (HBA_PxSSTS_IPM_MASK | HBA_PxSSTS_DET_MASK))
== (HBA_PxSSTS_IPM_ACTIVE | HBA_PxSSTS_DET_ESTABLISHED);
}
/** Do minimal error recovery. */
libpayload/ahci: Fix a warning by decompartmentalise the AHCI driver. Decompartmentalise AHCI driver into two parts, ATA and ATAPI. Add a few superficial comments while here. This also fixes a compiler warning. Change-Id: Ia1fd545b39868a81cbc311f6ffc786f9f1f61415 Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-on: http://review.coreboot.org/4783 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-01-22 22:30:42 +01:00
int ahci_error_recovery(ahci_dev_t *const dev, const u32 intr_status)
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>
2012-08-30 15:36:57 +02:00
{
/* Command engine has to be restarted.
We don't call ahci_cmdengine_stop() here as it also checks
HBA_PxCMD_FR which won't clear on fatal errors. */
dev->port->cmd_stat &= ~HBA_PxCMD_ST;
/* Always clear sata_error. */
ahci_clear_status(dev->port, sata_error);
/* Perform COMRESET if appropriate. */
const u32 tfd = dev->port->taskfile_data;
if ((tfd & (HBA_PxTFD_BSY | HBA_PxTFD_DRQ)) |
(intr_status & HBA_PxIS_PCS)) {
const u32 sctl = dev->port->sata_control & ~HBA_PxSCTL_DET_MASK;
dev->port->sata_control = sctl | HBA_PxSCTL_DET_COMRESET;
mdelay(1);
dev->port->sata_control = sctl;
}
if (ahci_port_is_active(dev->port))
/* Start command engine. */
return ahci_cmdengine_start(dev->port);
else
return -1;
}
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;
libpayload: ahci: Increase timeout for signature reading We can't read the drives signature before it's ready, i.e. spun up. So set the timeout to the standard 30s. Also put a notice on the console, so the user knows why the signature reading failed. Change-Id: I2148258f9b0eb950b71544dafd95776ae70afac8 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/3493 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Dave Frodin <dave.frodin@se-eng.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-06-17 17:42:35 +02:00
/*
* Wait for D2H Register FIS with device' signature.
* The drive has to spin up here, so wait up to 30s.
*/
const int timeout_s = 30; /* Time out after 30s. */
int timeout = timeout_s * 100;
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>
2012-08-30 15:36:57 +02:00
while ((port->taskfile_data & HBA_PxTFD_BSY) && timeout--)
mdelay(10);
libpayload: ahci: Increase timeout for signature reading We can't read the drives signature before it's ready, i.e. spun up. So set the timeout to the standard 30s. Also put a notice on the console, so the user knows why the signature reading failed. Change-Id: I2148258f9b0eb950b71544dafd95776ae70afac8 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/3493 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Dave Frodin <dave.frodin@se-eng.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-06-17 17:42:35 +02:00
if (port->taskfile_data & HBA_PxTFD_BSY)
printf("ahci: Timed out after %d seconds "
"of waiting for device to spin up.\n", timeout_s);
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>
2012-08-30 15:36:57 +02:00
/* Initialize device or fall through to clean up. */
switch (port->signature) {
case HBA_PxSIG_ATA:
printf("ahci: ATA drive on port #%d.\n", portnum);
libpayload: Make Kconfig bools use IS_ENABLED() This will make the code work with the different styles of Kconfig (emit unset bools vs don't emit unset bools) Roughly, the patch does this, and a little bit of fixing up: perl -pi -e 's,ifdef (CONFIG_LP_.+?)\b,if IS_ENABLED\($1\),g' `find . -name *.[ch]` perl -pi -e 's,ifndef (CONFIG_LP_.+?)\b,if !IS_ENABLED\($1\),g' `find . -name *.[ch]` Change-Id: Ib8a839b056a1f806a8597052e1b571ea3d18a79f Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10711 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-06-30 00:47:34 +02:00
#if IS_ENABLED(CONFIG_LP_STORAGE_ATA)
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>
2012-08-30 15:36:57 +02:00
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);
libpayload: Make Kconfig bools use IS_ENABLED() This will make the code work with the different styles of Kconfig (emit unset bools vs don't emit unset bools) Roughly, the patch does this, and a little bit of fixing up: perl -pi -e 's,ifdef (CONFIG_LP_.+?)\b,if IS_ENABLED\($1\),g' `find . -name *.[ch]` perl -pi -e 's,ifndef (CONFIG_LP_.+?)\b,if !IS_ENABLED\($1\),g' `find . -name *.[ch]` Change-Id: Ib8a839b056a1f806a8597052e1b571ea3d18a79f Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10711 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-06-30 00:47:34 +02:00
#if IS_ENABLED(CONFIG_LP_STORAGE_ATAPI)
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>
2012-08-30 15:36:57 +02:00
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);
}
libpayload: Make Kconfig bools use IS_ENABLED() This will make the code work with the different styles of Kconfig (emit unset bools vs don't emit unset bools) Roughly, the patch does this, and a little bit of fixing up: perl -pi -e 's,ifdef (CONFIG_LP_.+?)\b,if IS_ENABLED\($1\),g' `find . -name *.[ch]` perl -pi -e 's,ifndef (CONFIG_LP_.+?)\b,if !IS_ENABLED\($1\),g' `find . -name *.[ch]` Change-Id: Ib8a839b056a1f806a8597052e1b571ea3d18a79f Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10711 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-06-30 00:47:34 +02:00
#if IS_ENABLED(CONFIG_LP_STORAGE_AHCI_ONLY_TESTED)
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>
2012-08-30 15:36:57 +02:00
static u32 working_controllers[] = {
libpayload: Whitelist Mobile Panther Point AHCI controller Add the Mobile Panther Point (PPT) AHCI controller (DEVID 0x1e03) to the list of tested controllers. Also comment the only other listed controller (Mobile ICH9). The PPT AHCI controller was tested with a QM77 chipset on a Kontron KTQM77 board. Change-Id: Ia396761411f4f9289af11ec8e1b144512b2fc126 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/3361 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-05-21 12:26:47 +02:00
0x8086 | 0x2929 << 16, /* Mobile ICH9 */
0x8086 | 0x1e03 << 16, /* Mobile Panther Point PCH */
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>
2012-08-30 15:36:57 +02:00
};
#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);
libpayload: Make Kconfig bools use IS_ENABLED() This will make the code work with the different styles of Kconfig (emit unset bools vs don't emit unset bools) Roughly, the patch does this, and a little bit of fixing up: perl -pi -e 's,ifdef (CONFIG_LP_.+?)\b,if IS_ENABLED\($1\),g' `find . -name *.[ch]` perl -pi -e 's,ifndef (CONFIG_LP_.+?)\b,if !IS_ENABLED\($1\),g' `find . -name *.[ch]` Change-Id: Ib8a839b056a1f806a8597052e1b571ea3d18a79f Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10711 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-06-30 00:47:34 +02:00
#if IS_ENABLED(CONFIG_LP_STORAGE_AHCI_ONLY_TESTED)
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>
2012-08-30 15:36:57 +02:00
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));
}
}
}
}