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freebsd-dev/sys/mips/cavium/uart_bus_octeonusart.c

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Import Cavium's FreeBSD port, or the Octeon specific pieces, verbatim. Yes, this puts things in the wrong place, doesn't compile and is woefully incomplete. However, it will allow us to more easily track against the upstream sources without needing to import the entire Cavium tree under vendor. This port is based on FreeBSD 7.0 as of April 2007 and the pre-import MIPS tree (aka mips2), so much work is necessary here.
2009-06-14 02:46:07 +00:00
/*-
* Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org>
* 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 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
* $Id$
*/
/*
* Skeleton of this file was based on respective code for ARM
* code written by Olivier Houchard.
*/
/*
* XXXMIPS: This file is hacked from arm/... . XXXMIPS here means this file is
* experimental and was written for MIPS32 port.
*/
#include "opt_uart.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <dev/pci/pcivar.h>
#include <dev/uart/uart.h>
#include <dev/uart/uart_bus.h>
#include <dev/uart/uart_cpu.h>
Eliminate octeonregs.h. It was a copy of maltaregs.h with s/malta/octeon/gi done...
2010-01-23 06:42:47 +00:00
#include <mips/cavium/octeon_pcmap_regs.h>
Import Cavium's FreeBSD port, or the Octeon specific pieces, verbatim. Yes, this puts things in the wrong place, doesn't compile and is woefully incomplete. However, it will allow us to more easily track against the upstream sources without needing to import the entire Cavium tree under vendor. This port is based on FreeBSD 7.0 as of April 2007 and the pre-import MIPS tree (aka mips2), so much work is necessary here.
2009-06-14 02:46:07 +00:00
Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive library: o) Increase inline unit / large function growth limits for MIPS to accommodate the needs of the Simple Executive, which uses a shocking amount of inlining. o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and the Octeon SoC. o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific board numbers, specifically to support the MR320. o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd, which improperly uses an evaluation board's board number and breaks board detection at runtime. This board is sold by Portwell as the CAM-0100. o) Add support for the RTC available on some Octeon boards. o) Add support for the Octeon PCI bus. Note that rman_[sg]et_virtual for IO ports can not work unless building for n64. o) Clean up the CompactFlash driver to use Simple Executive macros and structures where possible (it would be advisable to use the Simple Executive API to set the PIO mode, too, but that is not done presently.) Also use structures from FreeBSD's ATA layer rather than structures copied from Linux. o) Print available Octeon SoC features on boot. o) Add support for the Octeon timecounter. o) Use the Simple Executive's routines rather than local copies for doing reads and writes to 64-bit addresses and use its macros for various device addresses rather than using local copies. o) Rename octeon_board_real to octeon_is_simulation to reduce differences with Cavium-provided code originally written for Linux. Also make it use the same simplified test that the Simple Executive and Linux both use rather than our complex one. o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus to use normal interrupt allocation and setup routines. o) Use the Simple Executive's bootmem facility to allocate physical memory for the kernel, rather than assuming we know which addresses we can steal. NB: This may reduce the amount of RAM the kernel reports you as having if you are leaving large temporary allocations made by U-Boot allocated when starting FreeBSD. o) Add a port of the Cavium-provided Ethernet driver for Linux. This changes Ethernet interface naming from rgmxN to octeN. The new driver has vast improvements over the old one, both in performance and functionality, but does still have some features which have not been ported entirely and there may be unimplemented code that can be hit in everyday use. I will make every effort to correct those as they are reported. o) Support loading the kernel on non-contiguous cores. o) Add very conservative support for harvesting randomness from the Octeon random number device. o) Turn SMP on by default. o) Clean up the style of the Octeon kernel configurations a little and make them compile with -march=octeon. o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple Executive. o) Modify the Simple Executive to build on FreeBSD and to build without executive-config.h or cvmx-config.h. In the future we may want to revert part of these changes and supply executive-config.h and cvmx-config.h and access to the options contained in those files via kernel configuration files. o) Modify the Simple Executive USB routines to support getting and setting of the USB PID.
2010-07-20 19:25:11 +00:00
#include <contrib/octeon-sdk/cvmx.h>
Import Cavium's FreeBSD port, or the Octeon specific pieces, verbatim. Yes, this puts things in the wrong place, doesn't compile and is woefully incomplete. However, it will allow us to more easily track against the upstream sources without needing to import the entire Cavium tree under vendor. This port is based on FreeBSD 7.0 as of April 2007 and the pre-import MIPS tree (aka mips2), so much work is necessary here.
2009-06-14 02:46:07 +00:00
#include "uart_if.h"
Minor formatting changes. Also, elimiante a couple of unused variables.
2009-06-14 07:01:22 +00:00
extern struct uart_class uart_oct16550_class;
Import Cavium's FreeBSD port, or the Octeon specific pieces, verbatim. Yes, this puts things in the wrong place, doesn't compile and is woefully incomplete. However, it will allow us to more easily track against the upstream sources without needing to import the entire Cavium tree under vendor. This port is based on FreeBSD 7.0 as of April 2007 and the pre-import MIPS tree (aka mips2), so much work is necessary here.
2009-06-14 02:46:07 +00:00
static int uart_octeon_probe(device_t dev);
static device_method_t uart_octeon_methods[] = {
/* Device interface */
Minor formatting changes. Also, elimiante a couple of unused variables.
2009-06-14 07:01:22 +00:00
DEVMETHOD(device_probe, uart_octeon_probe),
DEVMETHOD(device_attach, uart_bus_attach),
DEVMETHOD(device_detach, uart_bus_detach),
{0, 0}
Import Cavium's FreeBSD port, or the Octeon specific pieces, verbatim. Yes, this puts things in the wrong place, doesn't compile and is woefully incomplete. However, it will allow us to more easily track against the upstream sources without needing to import the entire Cavium tree under vendor. This port is based on FreeBSD 7.0 as of April 2007 and the pre-import MIPS tree (aka mips2), so much work is necessary here.
2009-06-14 02:46:07 +00:00
};
static driver_t uart_octeon_driver = {
uart_driver_name,
uart_octeon_methods,
sizeof(struct uart_softc),
};
Minor formatting changes. Also, elimiante a couple of unused variables.
2009-06-14 07:01:22 +00:00
extern
SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs;
Formatting nit.
2009-11-20 15:56:51 +00:00
static int
uart_octeon_probe(device_t dev)
Import Cavium's FreeBSD port, or the Octeon specific pieces, verbatim. Yes, this puts things in the wrong place, doesn't compile and is woefully incomplete. However, it will allow us to more easily track against the upstream sources without needing to import the entire Cavium tree under vendor. This port is based on FreeBSD 7.0 as of April 2007 and the pre-import MIPS tree (aka mips2), so much work is necessary here.
2009-06-14 02:46:07 +00:00
{
struct uart_softc *sc;
Minor formatting changes. Also, elimiante a couple of unused variables.
2009-06-14 07:01:22 +00:00
int unit;
Import Cavium's FreeBSD port, or the Octeon specific pieces, verbatim. Yes, this puts things in the wrong place, doesn't compile and is woefully incomplete. However, it will allow us to more easily track against the upstream sources without needing to import the entire Cavium tree under vendor. This port is based on FreeBSD 7.0 as of April 2007 and the pre-import MIPS tree (aka mips2), so much work is necessary here.
2009-06-14 02:46:07 +00:00
Minor formatting changes. Also, elimiante a couple of unused variables.
2009-06-14 07:01:22 +00:00
unit = device_get_unit(dev);
Import Cavium's FreeBSD port, or the Octeon specific pieces, verbatim. Yes, this puts things in the wrong place, doesn't compile and is woefully incomplete. However, it will allow us to more easily track against the upstream sources without needing to import the entire Cavium tree under vendor. This port is based on FreeBSD 7.0 as of April 2007 and the pre-import MIPS tree (aka mips2), so much work is necessary here.
2009-06-14 02:46:07 +00:00
sc = device_get_softc(dev);
Rewrite to try to be more sane: o Introduce a uart bus space so that we don't have to hack dev/uart to do 8 byte reads. This also handles the shift properly, so reset the shift we want dev/uart doing to 0. In effect, this bus space makes the octeon registers have an interface to dev/uart that looks just like the old ISA bus, but does the necessary 64-bit read/write to the bus. We only support read/write operations. We do all the widths, but likely could get away with only 64-bit and 8-bit given the restricted nature of use of this bus. o use bus_space_map to set the .bsh rather than a direct assignment. o Minor cleanup of uart_cpu_getdev to make it conform more to the other implementations. o Add some coments for future work. # with these changes, we now make it through cninit, but there's still some # problem that's preventing output, as well as another problem that causes # us to call panic just after we return from cninit() in platform_start.
2009-11-24 07:50:19 +00:00
sc->sc_class = &uart_oct16550_class;
/*
* We inherit the settings from the systme console. Note, the bst
* bad bus_space_map are bogus here, but obio doesn't yet support
* them, it seems.
*/
Minor formatting changes. Also, elimiante a couple of unused variables.
2009-06-14 07:01:22 +00:00
sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs);
bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas));
Rewrite to try to be more sane: o Introduce a uart bus space so that we don't have to hack dev/uart to do 8 byte reads. This also handles the shift properly, so reset the shift we want dev/uart doing to 0. In effect, this bus space makes the octeon registers have an interface to dev/uart that looks just like the old ISA bus, but does the necessary 64-bit read/write to the bus. We only support read/write operations. We do all the widths, but likely could get away with only 64-bit and 8-bit given the restricted nature of use of this bus. o use bus_space_map to set the .bsh rather than a direct assignment. o Minor cleanup of uart_cpu_getdev to make it conform more to the other implementations. o Add some coments for future work. # with these changes, we now make it through cninit, but there's still some # problem that's preventing output, as well as another problem that causes # us to call panic just after we return from cninit() in platform_start.
2009-11-24 07:50:19 +00:00
sc->sc_bas.bst = uart_bus_space_mem;
Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive library: o) Increase inline unit / large function growth limits for MIPS to accommodate the needs of the Simple Executive, which uses a shocking amount of inlining. o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and the Octeon SoC. o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific board numbers, specifically to support the MR320. o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd, which improperly uses an evaluation board's board number and breaks board detection at runtime. This board is sold by Portwell as the CAM-0100. o) Add support for the RTC available on some Octeon boards. o) Add support for the Octeon PCI bus. Note that rman_[sg]et_virtual for IO ports can not work unless building for n64. o) Clean up the CompactFlash driver to use Simple Executive macros and structures where possible (it would be advisable to use the Simple Executive API to set the PIO mode, too, but that is not done presently.) Also use structures from FreeBSD's ATA layer rather than structures copied from Linux. o) Print available Octeon SoC features on boot. o) Add support for the Octeon timecounter. o) Use the Simple Executive's routines rather than local copies for doing reads and writes to 64-bit addresses and use its macros for various device addresses rather than using local copies. o) Rename octeon_board_real to octeon_is_simulation to reduce differences with Cavium-provided code originally written for Linux. Also make it use the same simplified test that the Simple Executive and Linux both use rather than our complex one. o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus to use normal interrupt allocation and setup routines. o) Use the Simple Executive's bootmem facility to allocate physical memory for the kernel, rather than assuming we know which addresses we can steal. NB: This may reduce the amount of RAM the kernel reports you as having if you are leaving large temporary allocations made by U-Boot allocated when starting FreeBSD. o) Add a port of the Cavium-provided Ethernet driver for Linux. This changes Ethernet interface naming from rgmxN to octeN. The new driver has vast improvements over the old one, both in performance and functionality, but does still have some features which have not been ported entirely and there may be unimplemented code that can be hit in everyday use. I will make every effort to correct those as they are reported. o) Support loading the kernel on non-contiguous cores. o) Add very conservative support for harvesting randomness from the Octeon random number device. o) Turn SMP on by default. o) Clean up the style of the Octeon kernel configurations a little and make them compile with -march=octeon. o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple Executive. o) Modify the Simple Executive to build on FreeBSD and to build without executive-config.h or cvmx-config.h. In the future we may want to revert part of these changes and supply executive-config.h and cvmx-config.h and access to the options contained in those files via kernel configuration files. o) Modify the Simple Executive USB routines to support getting and setting of the USB PID.
2010-07-20 19:25:11 +00:00
/*
* XXX
Rather than shifting offsets by three, set register offset to 3. All our bus interface does that's special here now is to use a 64-bit register size. In theory, uart(4) ought to support a regsz as well as regshft and support 64-bit registers directly. Also use the UART class's range rather than a hand-coded 1024 for the address range.
2010-10-02 05:38:45 +00:00
* RBR isn't really a great base address.
Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive library: o) Increase inline unit / large function growth limits for MIPS to accommodate the needs of the Simple Executive, which uses a shocking amount of inlining. o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and the Octeon SoC. o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific board numbers, specifically to support the MR320. o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd, which improperly uses an evaluation board's board number and breaks board detection at runtime. This board is sold by Portwell as the CAM-0100. o) Add support for the RTC available on some Octeon boards. o) Add support for the Octeon PCI bus. Note that rman_[sg]et_virtual for IO ports can not work unless building for n64. o) Clean up the CompactFlash driver to use Simple Executive macros and structures where possible (it would be advisable to use the Simple Executive API to set the PIO mode, too, but that is not done presently.) Also use structures from FreeBSD's ATA layer rather than structures copied from Linux. o) Print available Octeon SoC features on boot. o) Add support for the Octeon timecounter. o) Use the Simple Executive's routines rather than local copies for doing reads and writes to 64-bit addresses and use its macros for various device addresses rather than using local copies. o) Rename octeon_board_real to octeon_is_simulation to reduce differences with Cavium-provided code originally written for Linux. Also make it use the same simplified test that the Simple Executive and Linux both use rather than our complex one. o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus to use normal interrupt allocation and setup routines. o) Use the Simple Executive's bootmem facility to allocate physical memory for the kernel, rather than assuming we know which addresses we can steal. NB: This may reduce the amount of RAM the kernel reports you as having if you are leaving large temporary allocations made by U-Boot allocated when starting FreeBSD. o) Add a port of the Cavium-provided Ethernet driver for Linux. This changes Ethernet interface naming from rgmxN to octeN. The new driver has vast improvements over the old one, both in performance and functionality, but does still have some features which have not been ported entirely and there may be unimplemented code that can be hit in everyday use. I will make every effort to correct those as they are reported. o) Support loading the kernel on non-contiguous cores. o) Add very conservative support for harvesting randomness from the Octeon random number device. o) Turn SMP on by default. o) Clean up the style of the Octeon kernel configurations a little and make them compile with -march=octeon. o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple Executive. o) Modify the Simple Executive to build on FreeBSD and to build without executive-config.h or cvmx-config.h. In the future we may want to revert part of these changes and supply executive-config.h and cvmx-config.h and access to the options contained in those files via kernel configuration files. o) Modify the Simple Executive USB routines to support getting and setting of the USB PID.
2010-07-20 19:25:11 +00:00
*/
Rather than shifting offsets by three, set register offset to 3. All our bus interface does that's special here now is to use a 64-bit register size. In theory, uart(4) ought to support a regsz as well as regshft and support 64-bit registers directly. Also use the UART class's range rather than a hand-coded 1024 for the address range.
2010-10-02 05:38:45 +00:00
if (bus_space_map(sc->sc_bas.bst, CVMX_MIO_UARTX_RBR(0),
uart_getrange(sc->sc_class), 0, &sc->sc_bas.bsh) != 0)
Rewrite to try to be more sane: o Introduce a uart bus space so that we don't have to hack dev/uart to do 8 byte reads. This also handles the shift properly, so reset the shift we want dev/uart doing to 0. In effect, this bus space makes the octeon registers have an interface to dev/uart that looks just like the old ISA bus, but does the necessary 64-bit read/write to the bus. We only support read/write operations. We do all the widths, but likely could get away with only 64-bit and 8-bit given the restricted nature of use of this bus. o use bus_space_map to set the .bsh rather than a direct assignment. o Minor cleanup of uart_cpu_getdev to make it conform more to the other implementations. o Add some coments for future work. # with these changes, we now make it through cninit, but there's still some # problem that's preventing output, as well as another problem that causes # us to call panic just after we return from cninit() in platform_start.
2009-11-24 07:50:19 +00:00
return (ENXIO);
Minor formatting changes. Also, elimiante a couple of unused variables.
2009-06-14 07:01:22 +00:00
return (uart_bus_probe(dev, sc->sc_bas.regshft, 0, 0, unit));
Import Cavium's FreeBSD port, or the Octeon specific pieces, verbatim. Yes, this puts things in the wrong place, doesn't compile and is woefully incomplete. However, it will allow us to more easily track against the upstream sources without needing to import the entire Cavium tree under vendor. This port is based on FreeBSD 7.0 as of April 2007 and the pre-import MIPS tree (aka mips2), so much work is necessary here.
2009-06-14 02:46:07 +00:00
}
DRIVER_MODULE(uart, obio, uart_octeon_driver, uart_devclass, 0, 0);
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