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freebsd-dev/sys/dev/aic7xxx/aic79xx_pci.c
Justin T. Gibbs 22dbd4c64c aic79xx.c: 
Allow 500us between pauses in ahd_pause_and_flushwork().
	The maximum we will wait is now 500ms.

	In the same routine, remove any attempt to clear ENSELO.
	Let the firmware do it once the current selection has
	completed.  This avoids some race conditions having to
	do with non-packetized completions and the auto-clearing
	of ENSELO on packetized completions.

	Also avoid attempts to clear critical sections when
	interrups are pending.  We are going to loop again
	anyway, so clearing critical sections is a waste of
	time.  It also may not be possible to clear a critical
	section if the source of the interrupt was a SEQINT.

aic79xx_pci.c:
	Use the Generic 9005 mask when looking for generic 7901B
	parts.  This allows the driver to attach to 7901B parts
	on motherboards using a non-Adaptec subvendor ID.

aic79xx_inline.h:
	Test for the SCBRAM_RD_BUG against the bugs
	field, not the flags field in the softc.

aic79xx.c:
	Cancel pending transactions on devices that
	respond with a selection timeout.  This decreases
	the duration of timeout recovery when a device
	disappears.

aic79xx.c:
	Don't bother forcing renegotiation on a selection
	timeout now that we use the device reset handler
	to abort any pending commands on the target.
	The device reset handler already takes us down
	to async narrow and forces a renegotiation.

	In the device reset handlers, only send a
	BDR sent async event if the status is not
	CAM_SEL_TIMEOUT.  This avoids sending this
	event in the selection timeout case

aic79xx.c:
	Modify the Core timeout handler to verify that another
	command has the potential to timeout before passing off
	a command timeout as due to some other command.  This
	safety measure is added in response to a timeout recovery
	failure on H2B where it appears that incoming reselection
	status was lost during a drive pull test.  In that case,
	the recovery handler continued to wait for the command
	that was active on the bus indefinetly.  While the root
	cause of the above issue is still being determined seems
	a prudent safeguard.

aic79xx_pci.c:
	Add a specific probe entry for the Dell OEM 39320(B).

aic79xx.c:
aic79xx.h:
aic79xx.reg:
aic79xx.seq:
	Modify the aic79xx firmware to never cross a cacheline or
	ADB boundary when DMA'ing completion entries to the host.
	In PCI mode, at least in 32/33 configurations, the SCB
	DMA engine may lose its place in the data-stream should
	the target force a retry on something other than an
	8byte aligned boundary. In PCI-X mode, we do this to
	avoid split transactions since many chipsets seem to be
	unable to format proper split completions to continue
	the data transfer.

	The above change allows us to drop our completion entries
	from 8 bytes to 4.  We were using 8 byte entries to ensure
	that PCI retries could only occur on an 8byte aligned
	boundary.  Now that the sequencer guarantees this by splitting
	up completions, we can safely drop the size to 4 bytes (2
	byte tag, one byte SG_RESID, one byte pad).

	Both the split-completion and PCI retry problems only show
	up under high tag load when interrupt coalescing is being
	especially effective.  The switch from a 2byte completion
	entry to an 8 byte entry to solve the PCI problem increased
	the chance of incurring a split in PCI-X mode when multiple
	transactions were completed at once.  Dropping the completion
	size to 4 bytes also means that we can complete more commands
	in a single DMA (128byte FIFO -> 32 commands instead of 16).

aic79xx.c:
	Modify the SCSIINT handler to defer clearing
	sequencer critical sections to the individual
	interrupt handlers.  This allows us to
	immediately disable any outgoing selections in
	the case of an unexpected busfree so we don't
	inadvertantly clear ENSELO *after* a new selection
	has started.  Doing so may cause the sequencer
	to miss a successful selection.

	In ahd_update_pending_scbs(), only clear ENSELO if
	the bus is currently busy and a selection is not
	already in progress or the sequencer has yet to
	handle a pending selection.  While we want to ensure
	that the selection for the SCB at the head of the
	selection queue is restarted so that any change in
	negotiation request can take effect, we can't clobber
	pending selection state without confusing the sequencer
	into missing a selection.
2004-05-11 20:46:05 +00:00

1029 lines
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/*
* Product specific probe and attach routines for:
* aic7901 and aic7902 SCSI controllers
*
* Copyright (c) 1994-2001 Justin T. Gibbs.
* Copyright (c) 2000-2002 Adaptec Inc.
* All rights reserved.
*
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*
* $Id: //depot/aic7xxx/aic7xxx/aic79xx_pci.c#88 $
*/
#ifdef __linux__
#include "aic79xx_osm.h"
#include "aic79xx_inline.h"
#else
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <dev/aic7xxx/aic79xx_osm.h>
#include <dev/aic7xxx/aic79xx_inline.h>
#endif
static __inline uint64_t
ahd_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
{
uint64_t id;
id = subvendor
| (subdevice << 16)
| ((uint64_t)vendor << 32)
| ((uint64_t)device << 48);
return (id);
}
#define ID_ALL_MASK 0xFFFFFFFFFFFFFFFFull
#define ID_ALL_IROC_MASK 0xFF7FFFFFFFFFFFFFull
#define ID_DEV_VENDOR_MASK 0xFFFFFFFF00000000ull
#define ID_9005_GENERIC_MASK 0xFFF0FFFF00000000ull
#define ID_9005_GENERIC_IROC_MASK 0xFF70FFFF00000000ull
#define ID_AIC7901 0x800F9005FFFF9005ull
#define ID_AHA_29320A 0x8000900500609005ull
#define ID_AHA_29320ALP 0x8017900500449005ull
#define ID_AIC7901A 0x801E9005FFFF9005ull
#define ID_AHA_29320LP 0x8014900500449005ull
#define ID_AIC7902 0x801F9005FFFF9005ull
#define ID_AIC7902_B 0x801D9005FFFF9005ull
#define ID_AHA_39320 0x8010900500409005ull
#define ID_AHA_29320 0x8012900500429005ull
#define ID_AHA_29320B 0x8013900500439005ull
#define ID_AHA_39320_B 0x8015900500409005ull
#define ID_AHA_39320_B_DELL 0x8015900501681028ull
#define ID_AHA_39320A 0x8016900500409005ull
#define ID_AHA_39320D 0x8011900500419005ull
#define ID_AHA_39320D_B 0x801C900500419005ull
#define ID_AHA_39320D_HP 0x8011900500AC0E11ull
#define ID_AHA_39320D_B_HP 0x801C900500AC0E11ull
#define ID_AIC7902_PCI_REV_A4 0x3
#define ID_AIC7902_PCI_REV_B0 0x10
#define SUBID_HP 0x0E11
#define DEVID_9005_HOSTRAID(id) ((id) & 0x80)
#define DEVID_9005_TYPE(id) ((id) & 0xF)
#define DEVID_9005_TYPE_HBA 0x0 /* Standard Card */
#define DEVID_9005_TYPE_HBA_2EXT 0x1 /* 2 External Ports */
#define DEVID_9005_TYPE_MB 0xF /* On Motherboard */
#define DEVID_9005_MFUNC(id) ((id) & 0x10)
#define DEVID_9005_PACKETIZED(id) ((id) & 0x8000)
#define SUBID_9005_TYPE(id) ((id) & 0xF)
#define SUBID_9005_TYPE_HBA 0x0 /* Standard Card */
#define SUBID_9005_TYPE_MB 0xF /* On Motherboard */
#define SUBID_9005_AUTOTERM(id) (((id) & 0x10) == 0)
#define SUBID_9005_LEGACYCONN_FUNC(id) ((id) & 0x20)
#define SUBID_9005_SEEPTYPE(id) ((id) & 0x0C0) >> 6)
#define SUBID_9005_SEEPTYPE_NONE 0x0
#define SUBID_9005_SEEPTYPE_4K 0x1
static ahd_device_setup_t ahd_aic7901_setup;
static ahd_device_setup_t ahd_aic7901A_setup;
static ahd_device_setup_t ahd_aic7902_setup;
static ahd_device_setup_t ahd_aic790X_setup;
struct ahd_pci_identity ahd_pci_ident_table [] =
{
/* aic7901 based controllers */
{
ID_AHA_29320A,
ID_ALL_MASK,
"Adaptec 29320A Ultra320 SCSI adapter",
ahd_aic7901_setup
},
{
ID_AHA_29320ALP,
ID_ALL_MASK,
"Adaptec 29320ALP Ultra320 SCSI adapter",
ahd_aic7901_setup
},
/* aic7901A based controllers */
{
ID_AHA_29320LP,
ID_ALL_MASK,
"Adaptec 29320LP Ultra320 SCSI adapter",
ahd_aic7901A_setup
},
/* aic7902 based controllers */
{
ID_AHA_29320,
ID_ALL_MASK,
"Adaptec 29320 Ultra320 SCSI adapter",
ahd_aic7902_setup
},
{
ID_AHA_29320B,
ID_ALL_MASK,
"Adaptec 29320B Ultra320 SCSI adapter",
ahd_aic7902_setup
},
{
ID_AHA_39320,
ID_ALL_MASK,
"Adaptec 39320 Ultra320 SCSI adapter",
ahd_aic7902_setup
},
{
ID_AHA_39320_B,
ID_ALL_MASK,
"Adaptec 39320 Ultra320 SCSI adapter",
ahd_aic7902_setup
},
{
ID_AHA_39320_B_DELL,
ID_ALL_MASK,
"Adaptec (Dell OEM) 39320 Ultra320 SCSI adapter",
ahd_aic7902_setup
},
{
ID_AHA_39320A,
ID_ALL_MASK,
"Adaptec 39320A Ultra320 SCSI adapter",
ahd_aic7902_setup
},
{
ID_AHA_39320D,
ID_ALL_MASK,
"Adaptec 39320D Ultra320 SCSI adapter",
ahd_aic7902_setup
},
{
ID_AHA_39320D_HP,
ID_ALL_MASK,
"Adaptec (HP OEM) 39320D Ultra320 SCSI adapter",
ahd_aic7902_setup
},
{
ID_AHA_39320D_B,
ID_ALL_MASK,
"Adaptec 39320D Ultra320 SCSI adapter",
ahd_aic7902_setup
},
{
ID_AHA_39320D_B_HP,
ID_ALL_MASK,
"Adaptec (HP OEM) 39320D Ultra320 SCSI adapter",
ahd_aic7902_setup
},
/* Generic chip probes for devices we don't know 'exactly' */
{
ID_AIC7901 & ID_9005_GENERIC_MASK,
ID_9005_GENERIC_MASK,
"Adaptec AIC7901 Ultra320 SCSI adapter",
ahd_aic7901_setup
},
{
ID_AIC7901A & ID_DEV_VENDOR_MASK,
ID_DEV_VENDOR_MASK,
"Adaptec AIC7901A Ultra320 SCSI adapter",
ahd_aic7901A_setup
},
{
ID_AIC7902 & ID_9005_GENERIC_MASK,
ID_9005_GENERIC_MASK,
"Adaptec AIC7902 Ultra320 SCSI adapter",
ahd_aic7902_setup
}
};
const u_int ahd_num_pci_devs = NUM_ELEMENTS(ahd_pci_ident_table);
#define DEVCONFIG 0x40
#define PCIXINITPAT 0x0000E000ul
#define PCIXINIT_PCI33_66 0x0000E000ul
#define PCIXINIT_PCIX50_66 0x0000C000ul
#define PCIXINIT_PCIX66_100 0x0000A000ul
#define PCIXINIT_PCIX100_133 0x00008000ul
#define PCI_BUS_MODES_INDEX(devconfig) \
(((devconfig) & PCIXINITPAT) >> 13)
static const char *pci_bus_modes[] =
{
"PCI bus mode unknown",
"PCI bus mode unknown",
"PCI bus mode unknown",
"PCI bus mode unknown",
"PCI-X 101-133Mhz",
"PCI-X 67-100Mhz",
"PCI-X 50-66Mhz",
"PCI 33 or 66Mhz"
};
#define TESTMODE 0x00000800ul
#define IRDY_RST 0x00000200ul
#define FRAME_RST 0x00000100ul
#define PCI64BIT 0x00000080ul
#define MRDCEN 0x00000040ul
#define ENDIANSEL 0x00000020ul
#define MIXQWENDIANEN 0x00000008ul
#define DACEN 0x00000004ul
#define STPWLEVEL 0x00000002ul
#define QWENDIANSEL 0x00000001ul
#define DEVCONFIG1 0x44
#define PREQDIS 0x01
#define CSIZE_LATTIME 0x0c
#define CACHESIZE 0x000000fful
#define LATTIME 0x0000ff00ul
static int ahd_check_extport(struct ahd_softc *ahd);
static void ahd_configure_termination(struct ahd_softc *ahd,
u_int adapter_control);
static void ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat);
struct ahd_pci_identity *
ahd_find_pci_device(aic_dev_softc_t pci)
{
uint64_t full_id;
uint16_t device;
uint16_t vendor;
uint16_t subdevice;
uint16_t subvendor;
struct ahd_pci_identity *entry;
u_int i;
vendor = aic_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
device = aic_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
subvendor = aic_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
subdevice = aic_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
full_id = ahd_compose_id(device,
vendor,
subdevice,
subvendor);
/*
* If we are configured to attach to HostRAID
* controllers, mask out the IROC/HostRAID bit
* in the
*/
if (ahd_attach_to_HostRAID_controllers)
full_id &= ID_ALL_IROC_MASK;
for (i = 0; i < ahd_num_pci_devs; i++) {
entry = &ahd_pci_ident_table[i];
if (entry->full_id == (full_id & entry->id_mask)) {
/* Honor exclusion entries. */
if (entry->name == NULL)
return (NULL);
return (entry);
}
}
return (NULL);
}
int
ahd_pci_config(struct ahd_softc *ahd, struct ahd_pci_identity *entry)
{
struct scb_data *shared_scb_data;
u_long l;
u_int command;
uint32_t devconfig;
uint16_t device;
uint16_t subvendor;
int error;
shared_scb_data = NULL;
ahd->description = entry->name;
/*
* Record if this is a HostRAID board.
*/
device = aic_pci_read_config(ahd->dev_softc,
PCIR_DEVICE, /*bytes*/2);
if (DEVID_9005_HOSTRAID(device))
ahd->flags |= AHD_HOSTRAID_BOARD;
/*
* Record if this is an HP board.
*/
subvendor = aic_pci_read_config(ahd->dev_softc,
PCIR_SUBVEND_0, /*bytes*/2);
if (subvendor == SUBID_HP)
ahd->flags |= AHD_HP_BOARD;
error = entry->setup(ahd);
if (error != 0)
return (error);
devconfig = aic_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
if ((devconfig & PCIXINITPAT) == PCIXINIT_PCI33_66) {
ahd->chip |= AHD_PCI;
/* Disable PCIX workarounds when running in PCI mode. */
ahd->bugs &= ~AHD_PCIX_BUG_MASK;
} else {
ahd->chip |= AHD_PCIX;
}
ahd->bus_description = pci_bus_modes[PCI_BUS_MODES_INDEX(devconfig)];
aic_power_state_change(ahd, AIC_POWER_STATE_D0);
error = ahd_pci_map_registers(ahd);
if (error != 0)
return (error);
/*
* If we need to support high memory, enable dual
* address cycles. This bit must be set to enable
* high address bit generation even if we are on a
* 64bit bus (PCI64BIT set in devconfig).
*/
if ((ahd->flags & (AHD_39BIT_ADDRESSING|AHD_64BIT_ADDRESSING)) != 0) {
uint32_t devconfig;
if (bootverbose)
printf("%s: Enabling 39Bit Addressing\n",
ahd_name(ahd));
devconfig = aic_pci_read_config(ahd->dev_softc,
DEVCONFIG, /*bytes*/4);
devconfig |= DACEN;
aic_pci_write_config(ahd->dev_softc, DEVCONFIG,
devconfig, /*bytes*/4);
}
/* Ensure busmastering is enabled */
command = aic_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
command |= PCIM_CMD_BUSMASTEREN;
aic_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
error = ahd_softc_init(ahd);
if (error != 0)
return (error);
ahd->bus_intr = ahd_pci_intr;
error = ahd_reset(ahd, /*reinit*/FALSE);
if (error != 0)
return (ENXIO);
ahd->pci_cachesize =
aic_pci_read_config(ahd->dev_softc, CSIZE_LATTIME,
/*bytes*/1) & CACHESIZE;
ahd->pci_cachesize *= 4;
ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
/* See if we have a SEEPROM and perform auto-term */
error = ahd_check_extport(ahd);
if (error != 0)
return (error);
/* Core initialization */
error = ahd_init(ahd);
if (error != 0)
return (error);
/*
* Allow interrupts now that we are completely setup.
*/
error = ahd_pci_map_int(ahd);
if (error != 0)
return (error);
ahd_list_lock(&l);
/*
* Link this softc in with all other ahd instances.
*/
ahd_softc_insert(ahd);
ahd_list_unlock(&l);
return (0);
}
/*
* Perform some simple tests that should catch situations where
* our registers are invalidly mapped.
*/
int
ahd_pci_test_register_access(struct ahd_softc *ahd)
{
uint32_t cmd;
u_int targpcistat;
u_int pci_status1;
int error;
uint8_t hcntrl;
error = EIO;
/*
* Enable PCI error interrupt status, but suppress NMIs
* generated by SERR raised due to target aborts.
*/
cmd = aic_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
aic_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
/*
* First a simple test to see if any
* registers can be read. Reading
* HCNTRL has no side effects and has
* at least one bit that is guaranteed to
* be zero so it is a good register to
* use for this test.
*/
hcntrl = ahd_inb(ahd, HCNTRL);
if (hcntrl == 0xFF)
goto fail;
/*
* Next create a situation where write combining
* or read prefetching could be initiated by the
* CPU or host bridge. Our device does not support
* either, so look for data corruption and/or flaged
* PCI errors. First pause without causing another
* chip reset.
*/
hcntrl &= ~CHIPRST;
ahd_outb(ahd, HCNTRL, hcntrl|PAUSE);
while (ahd_is_paused(ahd) == 0)
;
/* Clear any PCI errors that occurred before our driver attached. */
ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
targpcistat = ahd_inb(ahd, TARGPCISTAT);
ahd_outb(ahd, TARGPCISTAT, targpcistat);
pci_status1 = aic_pci_read_config(ahd->dev_softc,
PCIR_STATUS + 1, /*bytes*/1);
aic_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
pci_status1, /*bytes*/1);
ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
ahd_outb(ahd, CLRINT, CLRPCIINT);
ahd_outb(ahd, SEQCTL0, PERRORDIS);
ahd_outl(ahd, SRAM_BASE, 0x5aa555aa);
if (ahd_inl(ahd, SRAM_BASE) != 0x5aa555aa)
goto fail;
if ((ahd_inb(ahd, INTSTAT) & PCIINT) != 0) {
u_int targpcistat;
ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
targpcistat = ahd_inb(ahd, TARGPCISTAT);
if ((targpcistat & STA) != 0)
goto fail;
}
error = 0;
fail:
if ((ahd_inb(ahd, INTSTAT) & PCIINT) != 0) {
ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
targpcistat = ahd_inb(ahd, TARGPCISTAT);
/* Silently clear any latched errors. */
ahd_outb(ahd, TARGPCISTAT, targpcistat);
pci_status1 = aic_pci_read_config(ahd->dev_softc,
PCIR_STATUS + 1, /*bytes*/1);
aic_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
pci_status1, /*bytes*/1);
ahd_outb(ahd, CLRINT, CLRPCIINT);
}
ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS);
aic_pci_write_config(ahd->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
return (error);
}
/*
* Check the external port logic for a serial eeprom
* and termination/cable detection contrls.
*/
static int
ahd_check_extport(struct ahd_softc *ahd)
{
struct vpd_config vpd;
struct seeprom_config *sc;
u_int adapter_control;
int have_seeprom;
int error;
sc = ahd->seep_config;
have_seeprom = ahd_acquire_seeprom(ahd);
if (have_seeprom) {
u_int start_addr;
/*
* Fetch VPD for this function and parse it.
*/
if (bootverbose)
printf("%s: Reading VPD from SEEPROM...",
ahd_name(ahd));
/* Address is always in units of 16bit words */
start_addr = ((2 * sizeof(*sc))
+ (sizeof(vpd) * (ahd->channel - 'A'))) / 2;
error = ahd_read_seeprom(ahd, (uint16_t *)&vpd,
start_addr, sizeof(vpd)/2,
/*bytestream*/TRUE);
if (error == 0)
error = ahd_parse_vpddata(ahd, &vpd);
if (bootverbose)
printf("%s: VPD parsing %s\n",
ahd_name(ahd),
error == 0 ? "successful" : "failed");
if (bootverbose)
printf("%s: Reading SEEPROM...", ahd_name(ahd));
/* Address is always in units of 16bit words */
start_addr = (sizeof(*sc) / 2) * (ahd->channel - 'A');
error = ahd_read_seeprom(ahd, (uint16_t *)sc,
start_addr, sizeof(*sc)/2,
/*bytestream*/FALSE);
if (error != 0) {
printf("Unable to read SEEPROM\n");
have_seeprom = 0;
} else {
have_seeprom = ahd_verify_cksum(sc);
if (bootverbose) {
if (have_seeprom == 0)
printf ("checksum error\n");
else
printf ("done.\n");
}
}
ahd_release_seeprom(ahd);
}
if (!have_seeprom) {
u_int nvram_scb;
/*
* Pull scratch ram settings and treat them as
* if they are the contents of an seeprom if
* the 'ADPT', 'BIOS', or 'ASPI' signature is found
* in SCB 0xFF. We manually compose the data as 16bit
* values to avoid endian issues.
*/
ahd_set_scbptr(ahd, 0xFF);
nvram_scb = ahd_inb_scbram(ahd, SCB_BASE + NVRAM_SCB_OFFSET);
if (nvram_scb != 0xFF
&& ((ahd_inb_scbram(ahd, SCB_BASE + 0) == 'A'
&& ahd_inb_scbram(ahd, SCB_BASE + 1) == 'D'
&& ahd_inb_scbram(ahd, SCB_BASE + 2) == 'P'
&& ahd_inb_scbram(ahd, SCB_BASE + 3) == 'T')
|| (ahd_inb_scbram(ahd, SCB_BASE + 0) == 'B'
&& ahd_inb_scbram(ahd, SCB_BASE + 1) == 'I'
&& ahd_inb_scbram(ahd, SCB_BASE + 2) == 'O'
&& ahd_inb_scbram(ahd, SCB_BASE + 3) == 'S')
|| (ahd_inb_scbram(ahd, SCB_BASE + 0) == 'A'
&& ahd_inb_scbram(ahd, SCB_BASE + 1) == 'S'
&& ahd_inb_scbram(ahd, SCB_BASE + 2) == 'P'
&& ahd_inb_scbram(ahd, SCB_BASE + 3) == 'I'))) {
uint16_t *sc_data;
int i;
ahd_set_scbptr(ahd, nvram_scb);
sc_data = (uint16_t *)sc;
for (i = 0; i < 64; i += 2)
*sc_data++ = ahd_inw_scbram(ahd, SCB_BASE+i);
have_seeprom = ahd_verify_cksum(sc);
if (have_seeprom)
ahd->flags |= AHD_SCB_CONFIG_USED;
}
}
#if AHD_DEBUG
if (have_seeprom != 0
&& (ahd_debug & AHD_DUMP_SEEPROM) != 0) {
uint16_t *sc_data;
int i;
printf("%s: Seeprom Contents:", ahd_name(ahd));
sc_data = (uint16_t *)sc;
for (i = 0; i < (sizeof(*sc)); i += 2)
printf("\n\t0x%.4x", sc_data[i]);
printf("\n");
}
#endif
if (!have_seeprom) {
if (bootverbose)
printf("%s: No SEEPROM available.\n", ahd_name(ahd));
ahd->flags |= AHD_USEDEFAULTS;
error = ahd_default_config(ahd);
adapter_control = CFAUTOTERM|CFSEAUTOTERM;
free(ahd->seep_config, M_DEVBUF);
ahd->seep_config = NULL;
} else {
error = ahd_parse_cfgdata(ahd, sc);
adapter_control = sc->adapter_control;
}
if (error != 0)
return (error);
ahd_configure_termination(ahd, adapter_control);
return (0);
}
static void
ahd_configure_termination(struct ahd_softc *ahd, u_int adapter_control)
{
int error;
u_int sxfrctl1;
uint8_t termctl;
uint32_t devconfig;
devconfig = aic_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
devconfig &= ~STPWLEVEL;
if ((ahd->flags & AHD_STPWLEVEL_A) != 0)
devconfig |= STPWLEVEL;
if (bootverbose)
printf("%s: STPWLEVEL is %s\n",
ahd_name(ahd), (devconfig & STPWLEVEL) ? "on" : "off");
aic_pci_write_config(ahd->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
/* Make sure current sensing is off. */
if ((ahd->flags & AHD_CURRENT_SENSING) != 0) {
(void)ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 0);
}
/*
* Read to sense. Write to set.
*/
error = ahd_read_flexport(ahd, FLXADDR_TERMCTL, &termctl);
if ((adapter_control & CFAUTOTERM) == 0) {
if (bootverbose)
printf("%s: Manual Primary Termination\n",
ahd_name(ahd));
termctl &= ~(FLX_TERMCTL_ENPRILOW|FLX_TERMCTL_ENPRIHIGH);
if ((adapter_control & CFSTERM) != 0)
termctl |= FLX_TERMCTL_ENPRILOW;
if ((adapter_control & CFWSTERM) != 0)
termctl |= FLX_TERMCTL_ENPRIHIGH;
} else if (error != 0) {
printf("%s: Primary Auto-Term Sensing failed! "
"Using Defaults.\n", ahd_name(ahd));
termctl = FLX_TERMCTL_ENPRILOW|FLX_TERMCTL_ENPRIHIGH;
}
if ((adapter_control & CFSEAUTOTERM) == 0) {
if (bootverbose)
printf("%s: Manual Secondary Termination\n",
ahd_name(ahd));
termctl &= ~(FLX_TERMCTL_ENSECLOW|FLX_TERMCTL_ENSECHIGH);
if ((adapter_control & CFSELOWTERM) != 0)
termctl |= FLX_TERMCTL_ENSECLOW;
if ((adapter_control & CFSEHIGHTERM) != 0)
termctl |= FLX_TERMCTL_ENSECHIGH;
} else if (error != 0) {
printf("%s: Secondary Auto-Term Sensing failed! "
"Using Defaults.\n", ahd_name(ahd));
termctl |= FLX_TERMCTL_ENSECLOW|FLX_TERMCTL_ENSECHIGH;
}
/*
* Now set the termination based on what we found.
*/
sxfrctl1 = ahd_inb(ahd, SXFRCTL1) & ~STPWEN;
ahd->flags &= ~AHD_TERM_ENB_A;
if ((termctl & FLX_TERMCTL_ENPRILOW) != 0) {
ahd->flags |= AHD_TERM_ENB_A;
sxfrctl1 |= STPWEN;
}
/* Must set the latch once in order to be effective. */
ahd_outb(ahd, SXFRCTL1, sxfrctl1|STPWEN);
ahd_outb(ahd, SXFRCTL1, sxfrctl1);
error = ahd_write_flexport(ahd, FLXADDR_TERMCTL, termctl);
if (error != 0) {
printf("%s: Unable to set termination settings!\n",
ahd_name(ahd));
} else if (bootverbose) {
printf("%s: Primary High byte termination %sabled\n",
ahd_name(ahd),
(termctl & FLX_TERMCTL_ENPRIHIGH) ? "En" : "Dis");
printf("%s: Primary Low byte termination %sabled\n",
ahd_name(ahd),
(termctl & FLX_TERMCTL_ENPRILOW) ? "En" : "Dis");
printf("%s: Secondary High byte termination %sabled\n",
ahd_name(ahd),
(termctl & FLX_TERMCTL_ENSECHIGH) ? "En" : "Dis");
printf("%s: Secondary Low byte termination %sabled\n",
ahd_name(ahd),
(termctl & FLX_TERMCTL_ENSECLOW) ? "En" : "Dis");
}
return;
}
#define DPE 0x80
#define SSE 0x40
#define RMA 0x20
#define RTA 0x10
#define STA 0x08
#define DPR 0x01
static const char *split_status_source[] =
{
"DFF0",
"DFF1",
"OVLY",
"CMC",
};
static const char *pci_status_source[] =
{
"DFF0",
"DFF1",
"SG",
"CMC",
"OVLY",
"NONE",
"MSI",
"TARG"
};
static const char *split_status_strings[] =
{
"%s: Received split response in %s.\n",
"%s: Received split completion error message in %s\n",
"%s: Receive overrun in %s\n",
"%s: Count not complete in %s\n",
"%s: Split completion data bucket in %s\n",
"%s: Split completion address error in %s\n",
"%s: Split completion byte count error in %s\n",
"%s: Signaled Target-abort to early terminate a split in %s\n"
};
static const char *pci_status_strings[] =
{
"%s: Data Parity Error has been reported via PERR# in %s\n",
"%s: Target initial wait state error in %s\n",
"%s: Split completion read data parity error in %s\n",
"%s: Split completion address attribute parity error in %s\n",
"%s: Received a Target Abort in %s\n",
"%s: Received a Master Abort in %s\n",
"%s: Signal System Error Detected in %s\n",
"%s: Address or Write Phase Parity Error Detected in %s.\n"
};
void
ahd_pci_intr(struct ahd_softc *ahd)
{
uint8_t pci_status[8];
ahd_mode_state saved_modes;
u_int pci_status1;
u_int intstat;
u_int i;
u_int reg;
intstat = ahd_inb(ahd, INTSTAT);
if ((intstat & SPLTINT) != 0)
ahd_pci_split_intr(ahd, intstat);
if ((intstat & PCIINT) == 0)
return;
printf("%s: PCI error Interrupt\n", ahd_name(ahd));
saved_modes = ahd_save_modes(ahd);
ahd_dump_card_state(ahd);
ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
for (i = 0, reg = DF0PCISTAT; i < 8; i++, reg++) {
if (i == 5)
continue;
pci_status[i] = ahd_inb(ahd, reg);
/* Clear latched errors. So our interrupt deasserts. */
ahd_outb(ahd, reg, pci_status[i]);
}
for (i = 0; i < 8; i++) {
u_int bit;
if (i == 5)
continue;
for (bit = 0; bit < 8; bit++) {
if ((pci_status[i] & (0x1 << bit)) != 0) {
static const char *s;
s = pci_status_strings[bit];
if (i == 7/*TARG*/ && bit == 3)
s = "%s: Signaled Target Abort\n";
printf(s, ahd_name(ahd), pci_status_source[i]);
}
}
}
pci_status1 = aic_pci_read_config(ahd->dev_softc,
PCIR_STATUS + 1, /*bytes*/1);
aic_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
pci_status1, /*bytes*/1);
ahd_restore_modes(ahd, saved_modes);
ahd_outb(ahd, CLRINT, CLRPCIINT);
ahd_unpause(ahd);
}
static void
ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat)
{
uint8_t split_status[4];
uint8_t split_status1[4];
uint8_t sg_split_status[2];
uint8_t sg_split_status1[2];
ahd_mode_state saved_modes;
u_int i;
uint16_t pcix_status;
/*
* Check for splits in all modes. Modes 0 and 1
* additionally have SG engine splits to look at.
*/
pcix_status = aic_pci_read_config(ahd->dev_softc, PCIXR_STATUS,
/*bytes*/2);
printf("%s: PCI Split Interrupt - PCI-X status = 0x%x\n",
ahd_name(ahd), pcix_status);
saved_modes = ahd_save_modes(ahd);
for (i = 0; i < 4; i++) {
ahd_set_modes(ahd, i, i);
split_status[i] = ahd_inb(ahd, DCHSPLTSTAT0);
split_status1[i] = ahd_inb(ahd, DCHSPLTSTAT1);
/* Clear latched errors. So our interrupt deasserts. */
ahd_outb(ahd, DCHSPLTSTAT0, split_status[i]);
ahd_outb(ahd, DCHSPLTSTAT1, split_status1[i]);
if (i > 1)
continue;
sg_split_status[i] = ahd_inb(ahd, SGSPLTSTAT0);
sg_split_status1[i] = ahd_inb(ahd, SGSPLTSTAT1);
/* Clear latched errors. So our interrupt deasserts. */
ahd_outb(ahd, SGSPLTSTAT0, sg_split_status[i]);
ahd_outb(ahd, SGSPLTSTAT1, sg_split_status1[i]);
}
for (i = 0; i < 4; i++) {
u_int bit;
for (bit = 0; bit < 8; bit++) {
if ((split_status[i] & (0x1 << bit)) != 0) {
static const char *s;
s = split_status_strings[bit];
printf(s, ahd_name(ahd),
split_status_source[i]);
}
if (i > 1)
continue;
if ((sg_split_status[i] & (0x1 << bit)) != 0) {
static const char *s;
s = split_status_strings[bit];
printf(s, ahd_name(ahd), "SG");
}
}
}
/*
* Clear PCI-X status bits.
*/
aic_pci_write_config(ahd->dev_softc, PCIXR_STATUS,
pcix_status, /*bytes*/2);
ahd_outb(ahd, CLRINT, CLRSPLTINT);
ahd_restore_modes(ahd, saved_modes);
}
static int
ahd_aic7901_setup(struct ahd_softc *ahd)
{
ahd->chip = AHD_AIC7901;
ahd->features = AHD_AIC7901_FE;
return (ahd_aic790X_setup(ahd));
}
static int
ahd_aic7901A_setup(struct ahd_softc *ahd)
{
ahd->chip = AHD_AIC7901A;
ahd->features = AHD_AIC7901A_FE;
return (ahd_aic790X_setup(ahd));
}
static int
ahd_aic7902_setup(struct ahd_softc *ahd)
{
ahd->chip = AHD_AIC7902;
ahd->features = AHD_AIC7902_FE;
return (ahd_aic790X_setup(ahd));
}
static int
ahd_aic790X_setup(struct ahd_softc *ahd)
{
aic_dev_softc_t pci;
u_int rev;
pci = ahd->dev_softc;
rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
if (rev < ID_AIC7902_PCI_REV_A4) {
printf("%s: Unable to attach to unsupported chip revision %d\n",
ahd_name(ahd), rev);
aic_pci_write_config(pci, PCIR_COMMAND, 0, /*bytes*/2);
return (ENXIO);
}
ahd->channel = aic_get_pci_function(pci) + 'A';
if (rev < ID_AIC7902_PCI_REV_B0) {
/*
* Enable A series workarounds.
*/
ahd->bugs |= AHD_SENT_SCB_UPDATE_BUG|AHD_ABORT_LQI_BUG
| AHD_PKT_BITBUCKET_BUG|AHD_LONG_SETIMO_BUG
| AHD_NLQICRC_DELAYED_BUG|AHD_SCSIRST_BUG
| AHD_LQO_ATNO_BUG|AHD_AUTOFLUSH_BUG
| AHD_CLRLQO_AUTOCLR_BUG|AHD_PCIX_MMAPIO_BUG
| AHD_PCIX_CHIPRST_BUG|AHD_PCIX_SCBRAM_RD_BUG
| AHD_PKTIZED_STATUS_BUG|AHD_PKT_LUN_BUG
| AHD_MDFF_WSCBPTR_BUG|AHD_REG_SLOW_SETTLE_BUG
| AHD_SET_MODE_BUG|AHD_BUSFREEREV_BUG
| AHD_NONPACKFIFO_BUG|AHD_PACED_NEGTABLE_BUG
| AHD_FAINT_LED_BUG;
/*
* IO Cell paramter setup.
*/
AHD_SET_PRECOMP(ahd, AHD_PRECOMP_CUTBACK_29);
if ((ahd->flags & AHD_HP_BOARD) == 0)
AHD_SET_SLEWRATE(ahd, AHD_SLEWRATE_DEF_REVA);
} else {
u_int devconfig1;
ahd->features |= AHD_RTI|AHD_NEW_IOCELL_OPTS
| AHD_NEW_DFCNTRL_OPTS|AHD_FAST_CDB_DELIVERY;
ahd->bugs |= AHD_LQOOVERRUN_BUG|AHD_EARLY_REQ_BUG;
/*
* Some issues have been resolved in the 7901B.
*/
if ((ahd->features & AHD_MULTI_FUNC) != 0)
ahd->bugs |= AHD_INTCOLLISION_BUG|AHD_ABORT_LQI_BUG;
/*
* IO Cell paramter setup.
*/
AHD_SET_PRECOMP(ahd, AHD_PRECOMP_CUTBACK_29);
AHD_SET_SLEWRATE(ahd, AHD_SLEWRATE_DEF_REVB);
AHD_SET_AMPLITUDE(ahd, AHD_AMPLITUDE_DEF);
/*
* Set the PREQDIS bit for H2B which disables some workaround
* that doesn't work on regular PCI busses.
* XXX - Find out exactly what this does from the hardware
* folks!
*/
devconfig1 = aic_pci_read_config(pci, DEVCONFIG1, /*bytes*/1);
aic_pci_write_config(pci, DEVCONFIG1,
devconfig1|PREQDIS, /*bytes*/1);
devconfig1 = aic_pci_read_config(pci, DEVCONFIG1, /*bytes*/1);
}
return (0);
}
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