diff options
Diffstat (limited to 'cfe/cfe/dev/dev_ns16550_pci.c')
| -rw-r--r-- | cfe/cfe/dev/dev_ns16550_pci.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/cfe/cfe/dev/dev_ns16550_pci.c b/cfe/cfe/dev/dev_ns16550_pci.c new file mode 100644 index 0000000..021f34c --- /dev/null +++ b/cfe/cfe/dev/dev_ns16550_pci.c @@ -0,0 +1,114 @@ +/* ********************************************************************* + * Broadcom Common Firmware Environment (CFE) + * + * NS16550 UART driver (PCI) File: dev_ns16550_pci.c + * + * This is a console device driver for a PCI NS16550 UART + * + * Author: Mitch Lichtenberg (mpl@broadcom.com) + * + ********************************************************************* + * + * Copyright 2000,2001,2002,2003 + * Broadcom Corporation. All rights reserved. + * + * This software is furnished under license and may be used and + * copied only in accordance with the following terms and + * conditions. Subject to these conditions, you may download, + * copy, install, use, modify and distribute modified or unmodified + * copies of this software in source and/or binary form. No title + * or ownership is transferred hereby. + * + * 1) Any source code used, modified or distributed must reproduce + * and retain this copyright notice and list of conditions + * as they appear in the source file. + * + * 2) No right is granted to use any trade name, trademark, or + * logo of Broadcom Corporation. The "Broadcom Corporation" + * name may not be used to endorse or promote products derived + * from this software without the prior written permission of + * Broadcom Corporation. + * + * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED + * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR + * PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT + * SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN + * PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR 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), EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + ********************************************************************* */ + + +#include "lib_types.h" +#include "lib_malloc.h" +#include "lib_printf.h" +#include "cfe_iocb.h" +#include "cfe_device.h" +#include "cfe_ioctl.h" + +#include "pcivar.h" +#include "pcireg.h" + + +/* Probe routine for real UART driver */ +extern void ns16550_uart_probe(cfe_driver_t *drv, + unsigned long probe_a, unsigned long probe_b, + void *probe_ptr); + +/* Probe routine for this UART driver. */ +static void ns16550pci_uart_probe(cfe_driver_t *drv, + unsigned long probe_a, unsigned long probe_b, + void *probe_ptr); + +/* We just glom onto the dispatch table in the real driver */ +extern const cfe_devdisp_t ns16550_uart_dispatch; + +const cfe_driver_t ns16550pci_uart = { + "PCI NS16550 UART", + "uart", + CFE_DEV_SERIAL, + &ns16550_uart_dispatch, + ns16550pci_uart_probe +}; + + +static void ns16550pci_uart_probe(cfe_driver_t *drv, + unsigned long probe_a, unsigned long probe_b, + void *probe_ptr) +{ + phys_addr_t pa; + pcitag_t tag; + int index = 0; + + /* + * NS16550-compatible UART on the PCI bus + * probe_a, probe_b and probe_ptr are unused. + */ + + /* + * This is for a SIIG card. Should probably do a little + * vendor ID table like we did for the IDE driver so + * we can spport other cards. + */ + + for (;;) { + + if (pci_find_device(0x131f,0x2000,index,&tag) != 0) { + break; + } + + pci_map_io(tag, PCI_MAPREG(0), PCI_MATCH_BYTES, &pa); + xprintf("NS16550PCI: I/O mapped registers start at %08X", (uint32_t)pa); + + ns16550_uart_probe(drv,pa,0,NULL); + + index++; + } +} + |