diff options
Diffstat (limited to 'sys/dev/cy/cy_pci.c')
| -rw-r--r-- | sys/dev/cy/cy_pci.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/sys/dev/cy/cy_pci.c b/sys/dev/cy/cy_pci.c new file mode 100644 index 0000000..72cb961 --- /dev/null +++ b/sys/dev/cy/cy_pci.c @@ -0,0 +1,205 @@ +/* + * Copyright (c) 1996, David Greenman + * 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 unmodified, 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 + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +/* + * Cyclades Y PCI serial interface driver + */ + +#include "opt_cy_pci_fastintr.h" + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/bus.h> + +#include <machine/bus.h> +#include <sys/rman.h> +#include <machine/resource.h> + +#include <vm/vm.h> +#include <vm/pmap.h> + +#include <dev/pci/pcivar.h> + +#define CY_PCI_BASE_ADDR0 0x10 +#define CY_PCI_BASE_ADDR1 0x14 +#define CY_PCI_BASE_ADDR2 0x18 + +#define CY_PLX_9050_ICS 0x4c +#define CY_PLX_9060_ICS 0x68 +#define CY_PLX_9050_ICS_IENABLE 0x040 +#define CY_PLX_9050_ICS_LOCAL_IENABLE 0x001 +#define CY_PLX_9050_ICS_LOCAL_IPOLARITY 0x002 +#define CY_PLX_9060_ICS_IENABLE 0x100 +#define CY_PLX_9060_ICS_LOCAL_IENABLE 0x800 + +/* Cyclom-Y Custom Register for PLX ID. */ +#define PLX_VER 0x3400 +#define PLX_9050 0x0b +#define PLX_9060 0x0c +#define PLX_9080 0x0d + +extern int cyattach_common(void *, int); /* Not exactly correct */ +extern void cyintr(int); + +static int cy_pci_attach(device_t dev); +static int cy_pci_probe(device_t dev); + +static device_method_t cy_pci_methods[] = { + /* Device interface. */ + DEVMETHOD(device_probe, cy_pci_probe), + DEVMETHOD(device_attach, cy_pci_attach), + + { 0, 0 } +}; + +static driver_t cy_pci_driver = { + "cy", + cy_pci_methods, + 0, +}; + +static devclass_t cy_devclass; + +DRIVER_MODULE(cy, pci, cy_pci_driver, cy_devclass, 0, 0); + +static int +cy_pci_probe(dev) + device_t dev; +{ + u_int32_t device_id; + + device_id = pci_get_devid(dev); + device_id &= ~0x00060000; + if (device_id != 0x0100120e && device_id != 0x0101120e) + return (ENXIO); + device_set_desc(dev, "Cyclades Cyclom-Y Serial Adapter"); + return (0); +} + +static int +cy_pci_attach(dev) + device_t dev; +{ + struct resource *ioport_res, *irq_res, *mem_res; + void *irq_cookie, *vaddr; + u_int32_t ioport; + int adapter, irq_setup, ioport_rid, irq_rid, mem_rid; + u_char plx_ver; + + ioport_res = NULL; + irq_res = NULL; + mem_res = NULL; + + ioport_rid = CY_PCI_BASE_ADDR1; + ioport_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &ioport_rid, + 0ul, ~0ul, 0ul, RF_ACTIVE); + if (ioport_res == NULL) { + device_printf(dev, "ioport resource allocation failed\n"); + goto fail; + } + ioport = rman_get_start(ioport_res); + + mem_rid = CY_PCI_BASE_ADDR2; + mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid, + 0ul, ~0ul, 0ul, RF_ACTIVE); + if (mem_res == NULL) { + device_printf(dev, "memory resource allocation failed\n"); + goto fail; + } + vaddr = rman_get_virtual(mem_res); + + adapter = cyattach_common(vaddr, 1); + if (adapter < 0) { + device_printf(dev, "no ports found!\n"); + goto fail; + } + + /* + * Allocate our interrupt. + * XXX Using the ISA interrupt handler directly is a bit of a violation + * since it doesn't actually take the same argument. For PCI, the + * argument is a void * token, but for ISA it is a unit. Since + * there is no overlap in PCI/ISA unit numbers for this driver, and + * since the ISA driver must handle the interrupt anyway, we use + * the unit number as the token even for PCI. + */ + irq_rid = 0; + irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul, + RF_SHAREABLE | RF_ACTIVE); + if (irq_res == NULL) { + device_printf(dev, "interrupt resource allocation failed\n"); + goto fail; + } +#ifdef CY_PCI_FASTINTR + irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST, + (driver_intr_t *)cyintr, (void *)adapter, &irq_cookie); +#else + irq_setup = ENXIO; +#endif + if (irq_setup != 0) + irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY, + (driver_intr_t *)cyintr, (void *)adapter, &irq_cookie); + if (irq_setup != 0) { + device_printf(dev, "interrupt setup failed\n"); + goto fail; + } + + /* + * Enable the "local" interrupt input to generate a + * PCI interrupt. + */ + plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f; + switch (plx_ver) { + case PLX_9050: + outw(ioport + CY_PLX_9050_ICS, + CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE | + CY_PLX_9050_ICS_LOCAL_IPOLARITY); + break; + case PLX_9060: + case PLX_9080: + default: /* Old board, use PLX_9060 values. */ + outw(ioport + CY_PLX_9060_ICS, + inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE | + CY_PLX_9060_ICS_LOCAL_IENABLE); + break; + } + + return (0); + +fail: + if (ioport_res != NULL) + bus_release_resource(dev, SYS_RES_IOPORT, ioport_rid, + ioport_res); + if (irq_res != NULL) + bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res); + if (mem_res != NULL) + bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res); + return (ENXIO); +} |
