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freebsd-dev/sys/sparc64/pci/psychovar.h

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/* -> /*- for license, minor formatting changes
2005-01-07 02:29:27 +00:00
/*-
sys/sparc64: further adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
2017-11-27 15:10:39 +00:00
* SPDX-License-Identifier: BSD-2-Clause-NetBSD
*
Add support for the Sun psycho/sabre UPA-PCI bridge, some OpenFirmware PCI support code, and a driver for the Sun APB PCI-PCI bridge. Partly ported from NetBSD.
2001-11-09 20:19:58 +00:00
* Copyright (c) 1999, 2000 Matthew R. Green
* 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.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
Sync licenses and the corresponding RCS IDs with NetBSD, mainly switching the licenses of Matthew R. Green and the TNF to 2-clause. Obtained from: NetBSD
2011-03-12 14:33:32 +00:00
* from: NetBSD: psychovar.h,v 1.15 2008/05/29 14:51:26 mrg Exp
Add support for the Sun psycho/sabre UPA-PCI bridge, some OpenFirmware PCI support code, and a driver for the Sun APB PCI-PCI bridge. Partly ported from NetBSD.
2001-11-09 20:19:58 +00:00
*
* $FreeBSD$
*/
#ifndef _SPARC64_PCI_PSYCHOVAR_H_
#define _SPARC64_PCI_PSYCHOVAR_H_
/*
Some code cleanup: - Fix some comments; remove numerous superfluous or outdated ones. - Correctly pass on the requesting device when handing requests up to the parent bus. - Use the complete device name, including unit number, to build the IOMMU instance name. - Inline a function that was only used once, and was trivial.
2004-04-25 00:30:28 +00:00
* Per-PCI bus on mainbus softc structure; one for sabre, or two
* per pair of psychos.
Add support for the Sun psycho/sabre UPA-PCI bridge, some OpenFirmware PCI support code, and a driver for the Sun APB PCI-PCI bridge. Partly ported from NetBSD.
2001-11-09 20:19:58 +00:00
*/
struct psycho_softc {
- Factor out the common and generic parts of the sparc64 host-PCI-bridge drivers into the revived sys/sparc64/pci/ofw_pci.c, previously already serving a similar purpose. This has been done with sun4v in mind, which explains a) the otherwise not that obvious scheme employed and b) why reusing sys/powerpc/ofw/ofw_pci.c was even lesser an option. - Add a workaround for QEMU once again not emulating real machines, in this case by not providing the OFW_PCI_CS_MEM64 range. [1] Submitted by: jhb [1] MFC after: 1 week
2015-09-12 22:49:32 +00:00
/*
* This is here so that we can hook up the common bus interface
* methods in ofw_pci.c directly.
*/
struct ofw_pci_softc sc_ops;
- A closer inspection of the OpenSolaris code indicates that the DMA syncing for Hummingbird and Sabre bridges should be applied with every BUS_DMASYNC_POSTREAD instead of in a wrapper around interrupt handlers for devices behind PCI-PCI bridges only as suggested by the documentation (code for the latter actually exists in OpenSolaris but is disabled by default), which also makes more sense. - Take advantage of the ofw_pci_setup_device method introduced in r220038 for disabling bus parking for certain EBus bridges in order to - Mark some unused parameters as such.
2011-03-26 16:52:31 +00:00
- Factor out the common and generic parts of the sparc64 host-PCI-bridge drivers into the revived sys/sparc64/pci/ofw_pci.c, previously already serving a similar purpose. This has been done with sun4v in mind, which explains a) the otherwise not that obvious scheme employed and b) why reusing sys/powerpc/ofw/ofw_pci.c was even lesser an option. - Add a workaround for QEMU once again not emulating real machines, in this case by not providing the OFW_PCI_CS_MEM64 range. [1] Submitted by: jhb [1] MFC after: 1 week
2015-09-12 22:49:32 +00:00
struct iommu_state *sc_is;
struct bus_dma_methods *sc_dma_methods;
Add support for the Sun psycho/sabre UPA-PCI bridge, some OpenFirmware PCI support code, and a driver for the Sun APB PCI-PCI bridge. Partly ported from NetBSD.
2001-11-09 20:19:58 +00:00
- Use the newly introduced pcib_mtx spin lock to lock psycho_ce(), allowing it to be a filter/"fast" handler. Locking the interrupt handlers with a spin lock is mainly a requirement in schizo(4) but as we ought to register the spin lock anyway it should not hurt to take advantage of it in psycho(4). - Pass both a driver_filter_t and a driver_intr_t argument to psycho_set_intr(), allowing to get rid of the FAST interrupt flag hack. - Don't register the over-temperature interrupt handler as filter/ "fast" handler so shutdown_nice() can acquire the process lock. - Use bus_{read,write}_8() instead of bus_space_{read,write}_8() in order to get rid of sc_bushandle and sc_bustag in the softc. - Correct the debug output for adjusting the subordinate bus number. - Remove the banal and outdated above psycho_filter_stub(). - Fix some white space nits.
2007-06-16 23:46:41 +00:00
struct mtx *sc_mtx;
Correct the defintion of struct ofw_upa_regs, and use it instead of struct ofw_nexus_reg. Implement UPA device memory management in the nexus driver. Adapt the psycho driver to these changes, and do some minor cleanup work while being there.
2002-01-02 18:27:13 +00:00
struct resource *sc_mem_res;
Some clean-up, style changes and changes that will reduce differences between this driver and other Host-PCI bridge drivers based on this one: - Make the code fit into 80 columns. - Make the code adhere style(9) (don't use function calls in initializers, use uintXX_t instead of u_intXX_t, add missing prototypes, ...). - Remove unused and superfluous struct declaration, softc member, casts, includes, etc. - Use FBSDID. - Sprinkle const. - Try to make comments and messages consistent in style throughout the driver. - Use convenience macros for the number of interrupts and ranges of the bridge. - Use __func__ instead of hardcoded function names in panic strings and error messages. Some of the hardcoded function names actually were outdated through moving code around. [1] - Rename softc members related to the PCI side of the bridge to sc_pci_* in order to make it clear which side of the bridge they refer to (so stuff like sc_bushandle vs. sc_bh is less confusing while reading the code). PR: 76052 [1]
2005-11-22 21:34:26 +00:00
struct resource *sc_irq_res[PSYCHO_NINTR];
void *sc_ihand[PSYCHO_NINTR];
Add support for the Sun psycho/sabre UPA-PCI bridge, some OpenFirmware PCI support code, and a driver for the Sun APB PCI-PCI bridge. Partly ported from NetBSD.
2001-11-09 20:19:58 +00:00
- Factor out the common and generic parts of the sparc64 host-PCI-bridge drivers into the revived sys/sparc64/pci/ofw_pci.c, previously already serving a similar purpose. This has been done with sun4v in mind, which explains a) the otherwise not that obvious scheme employed and b) why reusing sys/powerpc/ofw/ofw_pci.c was even lesser an option. - Add a workaround for QEMU once again not emulating real machines, in this case by not providing the OFW_PCI_CS_MEM64 range. [1] Submitted by: jhb [1] MFC after: 1 week
2015-09-12 22:49:32 +00:00
uint8_t sc_pci_hpbcfg[16];
Add the new sparc64 OFW PCI framework, conditional on options OFW_NEWPCI for now. It introduces a OFW PCI bus driver and a generic OFW PCI-PCI bridge driver. By utilizing these, the PCI handling is much more elegant now. The advantages of the new approach are: - Device enumeration should hopefully be more like on Solaris now, so unit numbers should match what's printed on the box more closely. - Real interrupt routing is implemented now, so cardbus bridges etc. have at least a chance to work. - The quirk tables are gone and have been replaced by (hopefully sufficient) heuristics. - Much cleaner code. There was also a report that previously bogus interrupt assignments are fixed now, which can be attributed to the new heuristics. A pitfall, and the reason why this is not the default yet, is that it changes device enumeration, as mentioned above, which can make it necessary to change the system configuration if more than one unit of a device type is present (on a system with two hme cars, for example, it is possible that hme0 becomes hme1 and vice versa after enabling the option). Systems with multiple disk controllers may need to be booted into single user (and require manual specification of the root file system on boot) to adjust the fstab. Nevertheless, I would like to encourage users to use this option, so that it can be made the default soon. In detail, the changes are: - Introduce an OFW PCI bus driver; it inherits most methods from the generic PCI bus driver, but uses the firmware for enumeration, performs additional initialization for devices and firmware-specific interrupt routing. It also implements an OFW-specific method to allow child devices to get their firmware nodes. - Introduce an OFW PCI-PCI bridge driver; again, it inherits most of the generic PCI-PCI bridge driver; it has it's own method for interrupt routing, as well as some sparc64-specific methods (one to get the node again, and one to adjust the bridge bus range, since we need to reenumerate all PCI buses). - Convert the apb driver to the new way of handling things. - Provide a common framework for OFW bridge drivers, used be the two drivers above. - Provide a small common framework for interrupt routing (for all bridge types). - Convert the psycho driver to the new framework; this gets rid of a bunch of old kludges in pci_read_config(), and the whole preinitialization (ofw_pci_init()). - Convert the ISA MD part and the EBus driver to the new way interrupts and nodes are handled. - Introduce types for firmware interrupt properties. - Rename the old sparcbus_if to ofw_pci_if by repo copy (it is only required for PCI), and move it to a more correct location (new support methodsx were also added, and an old one was deprecated). - Fix a bunch of minor bugs, perform some cleanups. In some cases, I introduced some minor code duplication to keep the new code clean, in hopes that the old code will be unifdef'ed soon. Reviewed in part by: imp Tested by: jake, Marius Strobl <marius@alchemy.franken.de>, Sergey Mokryshev <mokr@mokr.net>, Chris Jackman <cjackNOSPAM@klatsch.org> Info on u30 firmware provided by: kris
2003-07-01 14:52:47 +00:00
- Factor out the common and generic parts of the sparc64 host-PCI-bridge drivers into the revived sys/sparc64/pci/ofw_pci.c, previously already serving a similar purpose. This has been done with sun4v in mind, which explains a) the otherwise not that obvious scheme employed and b) why reusing sys/powerpc/ofw/ofw_pci.c was even lesser an option. - Add a workaround for QEMU once again not emulating real machines, in this case by not providing the OFW_PCI_CS_MEM64 range. [1] Submitted by: jhb [1] MFC after: 1 week
2015-09-12 22:49:32 +00:00
SLIST_ENTRY(psycho_softc) sc_link;
Add support for the Sun psycho/sabre UPA-PCI bridge, some OpenFirmware PCI support code, and a driver for the Sun APB PCI-PCI bridge. Partly ported from NetBSD.
2001-11-09 20:19:58 +00:00
- Factor out the common and generic parts of the sparc64 host-PCI-bridge drivers into the revived sys/sparc64/pci/ofw_pci.c, previously already serving a similar purpose. This has been done with sun4v in mind, which explains a) the otherwise not that obvious scheme employed and b) why reusing sys/powerpc/ofw/ofw_pci.c was even lesser an option. - Add a workaround for QEMU once again not emulating real machines, in this case by not providing the OFW_PCI_CS_MEM64 range. [1] Submitted by: jhb [1] MFC after: 1 week
2015-09-12 22:49:32 +00:00
device_t sc_dev;
Add support for the Sun psycho/sabre UPA-PCI bridge, some OpenFirmware PCI support code, and a driver for the Sun APB PCI-PCI bridge. Partly ported from NetBSD.
2001-11-09 20:19:58 +00:00
- Factor out the common and generic parts of the sparc64 host-PCI-bridge drivers into the revived sys/sparc64/pci/ofw_pci.c, previously already serving a similar purpose. This has been done with sun4v in mind, which explains a) the otherwise not that obvious scheme employed and b) why reusing sys/powerpc/ofw/ofw_pci.c was even lesser an option. - Add a workaround for QEMU once again not emulating real machines, in this case by not providing the OFW_PCI_CS_MEM64 range. [1] Submitted by: jhb [1] MFC after: 1 week
2015-09-12 22:49:32 +00:00
bus_addr_t sc_pcictl;
Use a linked list to keep the psycho softcs instead of a statically sized array. While being there, deuglify the psycho pair detection loop which became quite awkward in a previous code reorganization.
2002-10-16 17:03:36 +00:00
- Factor out the common and generic parts of the sparc64 host-PCI-bridge drivers into the revived sys/sparc64/pci/ofw_pci.c, previously already serving a similar purpose. This has been done with sun4v in mind, which explains a) the otherwise not that obvious scheme employed and b) why reusing sys/powerpc/ofw/ofw_pci.c was even lesser an option. - Add a workaround for QEMU once again not emulating real machines, in this case by not providing the OFW_PCI_CS_MEM64 range. [1] Submitted by: jhb [1] MFC after: 1 week
2015-09-12 22:49:32 +00:00
u_int sc_mode;
#define PSYCHO_MODE_SABRE 0
#define PSYCHO_MODE_PSYCHO 1
On sparc64 machines with multiple host-PCI-bridges these bridges have separate configuration spaces so by definition they implement different PCI domains. Thus change psycho(4) to use PCI domains instead of reenumerating all PCI busses so they have globally unique bus numbers and drop support for reenumerating busses in the OFW PCI code. According to CVS history reenumeration was also required in order to get some E450 to boot but given that no other open source kernel changes the PCI bus numbers assigned by the firmware I believe the real problem was that the old code used the bus number as the device number for the PCI busses and unlike most of the other machines the firmwares of the problematic ones don't use disjoint PCI bus numbers across the host-PCI-bridges. MFC after: 1 month
2008-04-17 12:38:00 +00:00
- Factor out the common and generic parts of the sparc64 host-PCI-bridge drivers into the revived sys/sparc64/pci/ofw_pci.c, previously already serving a similar purpose. This has been done with sun4v in mind, which explains a) the otherwise not that obvious scheme employed and b) why reusing sys/powerpc/ofw/ofw_pci.c was even lesser an option. - Add a workaround for QEMU once again not emulating real machines, in this case by not providing the OFW_PCI_CS_MEM64 range. [1] Submitted by: jhb [1] MFC after: 1 week
2015-09-12 22:49:32 +00:00
/* Bus A or B of a psycho pair? */
u_int sc_half;
- Add the PCI side of the HOST-PCI bridge itself to the bus. This is required by the X.Org PCI domains code and additionally needs a workaround for Hummingbird and Sabre bridges as these don't allow their config headers to be read at any width, which is an unusual behavior. - In psycho(4) take advantage of DEFINE_CLASS_0 and use more appropriate types for some softc members. MFC after: 3 days
2007-11-30 23:02:42 +00:00
- Factor out the common and generic parts of the sparc64 host-PCI-bridge drivers into the revived sys/sparc64/pci/ofw_pci.c, previously already serving a similar purpose. This has been done with sun4v in mind, which explains a) the otherwise not that obvious scheme employed and b) why reusing sys/powerpc/ofw/ofw_pci.c was even lesser an option. - Add a workaround for QEMU once again not emulating real machines, in this case by not providing the OFW_PCI_CS_MEM64 range. [1] Submitted by: jhb [1] MFC after: 1 week
2015-09-12 22:49:32 +00:00
/* Interrupt Group Number for this device */
uint32_t sc_ign;
Add support for the Sun psycho/sabre UPA-PCI bridge, some OpenFirmware PCI support code, and a driver for the Sun APB PCI-PCI bridge. Partly ported from NetBSD.
2001-11-09 20:19:58 +00:00
};
Some clean-up, style changes and changes that will reduce differences between this driver and other Host-PCI bridge drivers based on this one: - Make the code fit into 80 columns. - Make the code adhere style(9) (don't use function calls in initializers, use uintXX_t instead of u_intXX_t, add missing prototypes, ...). - Remove unused and superfluous struct declaration, softc member, casts, includes, etc. - Use FBSDID. - Sprinkle const. - Try to make comments and messages consistent in style throughout the driver. - Use convenience macros for the number of interrupts and ranges of the bridge. - Use __func__ instead of hardcoded function names in panic strings and error messages. Some of the hardcoded function names actually were outdated through moving code around. [1] - Rename softc members related to the PCI side of the bridge to sc_pci_* in order to make it clear which side of the bridge they refer to (so stuff like sc_bushandle vs. sc_bh is less confusing while reading the code). PR: 76052 [1]
2005-11-22 21:34:26 +00:00
#endif /* !_SPARC64_PCI_PSYCHOVAR_H_ */
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