353 lines
9.0 KiB
C
353 lines
9.0 KiB
C
/*-
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* Copyright (c) 2007 Marvell Semiconductor, Inc.
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* Copyright (c) 2007 Sam Leffler, Errno Consulting
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* Copyright (c) 2008 Weongyo Jeong <weongyo@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <sys/cdefs.h>
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#ifdef __FreeBSD__
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__FBSDID("$FreeBSD$");
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#endif
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/*
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* PCI front-end for the Marvell 88W8335 Wireless LAN controller driver.
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <machine/bus.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net80211/ieee80211_var.h>
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#include <dev/malo/if_malo.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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/*
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* PCI glue.
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*/
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#define MALO_RESOURCE_MAX 2
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#define MALO_MSI_MESSAGES 1
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struct malo_pci_softc {
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struct malo_softc malo_sc;
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struct resource_spec *malo_mem_spec;
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struct resource *malo_res_mem[MALO_RESOURCE_MAX];
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struct resource_spec *malo_irq_spec;
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struct resource *malo_res_irq[MALO_MSI_MESSAGES];
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void *malo_intrhand[MALO_MSI_MESSAGES];
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int malo_msi;
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};
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/*
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* Tunable variables.
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*/
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SYSCTL_DECL(_hw_malo);
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SYSCTL_NODE(_hw_malo, OID_AUTO, pci, CTLFLAG_RD, 0,
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"Marvell 88W8335 driver PCI parameters");
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static int msi_disable = 0; /* MSI disabled */
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SYSCTL_INT(_hw_malo_pci, OID_AUTO, msi_disable, CTLFLAG_RW, &msi_disable,
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0, "MSI disabled");
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TUNABLE_INT("hw.malo.pci.msi_disable", &msi_disable);
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/*
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* Devices supported by this driver.
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*/
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#define VENDORID_MARVELL 0X11AB
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#define DEVICEID_MRVL_88W8310 0X1FA7
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#define DEVICEID_MRVL_88W8335R1 0X1FAA
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#define DEVICEID_MRVL_88W8335R2 0X1FAB
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static struct malo_product {
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uint16_t mp_vendorid;
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uint16_t mp_deviceid;
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const char *mp_name;
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} malo_products[] = {
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{ VENDORID_MARVELL, DEVICEID_MRVL_88W8310,
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"Marvell Libertas 88W8310 802.11g Wireless Adapter" },
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{ VENDORID_MARVELL, DEVICEID_MRVL_88W8335R1,
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"Marvell Libertas 88W8335 802.11g Wireless Adapter" },
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{ VENDORID_MARVELL, DEVICEID_MRVL_88W8335R2,
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"Marvell Libertas 88W8335 802.11g Wireless Adapter" }
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};
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static struct resource_spec malo_res_spec_mem[] = {
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{ SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE },
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{ SYS_RES_MEMORY, PCIR_BAR(1), RF_ACTIVE },
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{ -1, 0, 0 }
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};
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static struct resource_spec malo_res_spec_legacy[] = {
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{ SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
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{ -1, 0, 0 }
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};
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static struct resource_spec malo_res_spec_msi[] = {
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{ SYS_RES_IRQ, 1, RF_ACTIVE },
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{ -1, 0, 0 }
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};
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static int malo_pci_detach(device_t);
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static int
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malo_pci_probe(device_t dev)
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{
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#define N(a) (sizeof(a) / sizeof((a)[0]))
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struct malo_product *mp;
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uint16_t vendor, devid;
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int i;
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vendor = pci_get_vendor(dev);
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devid = pci_get_device(dev);
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mp = malo_products;
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for (i = 0; i < N(malo_products); i++, mp++) {
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if (vendor == mp->mp_vendorid && devid == mp->mp_deviceid) {
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device_set_desc(dev, mp->mp_name);
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return (BUS_PROBE_DEFAULT);
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}
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}
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return (ENXIO);
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#undef N
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}
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static int
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malo_pci_attach(device_t dev)
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{
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int error = ENXIO, i, msic, reg;
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struct malo_pci_softc *psc = device_get_softc(dev);
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struct malo_softc *sc = &psc->malo_sc;
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sc->malo_dev = dev;
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pci_enable_busmaster(dev);
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/*
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* Setup memory-mapping of PCI registers.
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*/
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psc->malo_mem_spec = malo_res_spec_mem;
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error = bus_alloc_resources(dev, psc->malo_mem_spec, psc->malo_res_mem);
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if (error) {
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device_printf(dev, "couldn't allocate memory resources\n");
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return (ENXIO);
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}
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/*
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* Arrange and allocate interrupt line.
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*/
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sc->malo_invalid = 1;
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if (pci_find_cap(dev, PCIY_EXPRESS, ®) == 0) {
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msic = pci_msi_count(dev);
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if (bootverbose)
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device_printf(dev, "MSI count : %d\n", msic);
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} else
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msic = 0;
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psc->malo_irq_spec = malo_res_spec_legacy;
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if (msic == MALO_MSI_MESSAGES && msi_disable == 0) {
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if (pci_alloc_msi(dev, &msic) == 0) {
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if (msic == MALO_MSI_MESSAGES) {
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device_printf(dev, "Using %d MSI messages\n",
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msic);
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psc->malo_irq_spec = malo_res_spec_msi;
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psc->malo_msi = 1;
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} else
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pci_release_msi(dev);
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}
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}
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error = bus_alloc_resources(dev, psc->malo_irq_spec, psc->malo_res_irq);
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if (error) {
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device_printf(dev, "couldn't allocate IRQ resources\n");
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goto bad;
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}
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if (psc->malo_msi == 0)
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error = bus_setup_intr(dev, psc->malo_res_irq[0],
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INTR_TYPE_NET | INTR_MPSAFE, malo_intr, NULL, sc,
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&psc->malo_intrhand[0]);
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else {
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for (i = 0; i < MALO_MSI_MESSAGES; i++) {
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error = bus_setup_intr(dev, psc->malo_res_irq[i],
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INTR_TYPE_NET | INTR_MPSAFE, malo_intr, NULL, sc,
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&psc->malo_intrhand[i]);
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if (error != 0)
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break;
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}
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}
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/*
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* Setup DMA descriptor area.
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*/
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if (bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */
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1, 0, /* alignment, bounds */
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BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
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BUS_SPACE_MAXADDR, /* highaddr */
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NULL, NULL, /* filter, filterarg */
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BUS_SPACE_MAXADDR, /* maxsize */
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0, /* nsegments */
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BUS_SPACE_MAXADDR, /* maxsegsize */
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0, /* flags */
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NULL, /* lockfunc */
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NULL, /* lockarg */
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&sc->malo_dmat)) {
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device_printf(dev, "cannot allocate DMA tag\n");
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goto bad1;
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}
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sc->malo_io0t = rman_get_bustag(psc->malo_res_mem[0]);
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sc->malo_io0h = rman_get_bushandle(psc->malo_res_mem[0]);
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sc->malo_io1t = rman_get_bustag(psc->malo_res_mem[1]);
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sc->malo_io1h = rman_get_bushandle(psc->malo_res_mem[1]);
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error = malo_attach(pci_get_device(dev), sc);
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if (error != 0)
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goto bad2;
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return (error);
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bad2:
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bus_dma_tag_destroy(sc->malo_dmat);
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bad1:
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if (psc->malo_msi == 0)
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bus_teardown_intr(dev, psc->malo_res_irq[0],
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psc->malo_intrhand[0]);
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else {
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for (i = 0; i < MALO_MSI_MESSAGES; i++)
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bus_teardown_intr(dev, psc->malo_res_irq[i],
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psc->malo_intrhand[i]);
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}
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bus_release_resources(dev, psc->malo_irq_spec, psc->malo_res_irq);
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bad:
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if (psc->malo_msi != 0)
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pci_release_msi(dev);
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bus_release_resources(dev, psc->malo_mem_spec, psc->malo_res_mem);
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return (error);
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}
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static int
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malo_pci_detach(device_t dev)
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{
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int i;
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struct malo_pci_softc *psc = device_get_softc(dev);
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struct malo_softc *sc = &psc->malo_sc;
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/* check if device was removed */
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sc->malo_invalid = !bus_child_present(dev);
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malo_detach(sc);
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bus_generic_detach(dev);
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if (psc->malo_msi == 0)
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bus_teardown_intr(dev, psc->malo_res_irq[0],
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psc->malo_intrhand[0]);
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else {
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for (i = 0; i < MALO_MSI_MESSAGES; i++)
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bus_teardown_intr(dev, psc->malo_res_irq[i],
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psc->malo_intrhand[i]);
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pci_release_msi(dev);
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}
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bus_release_resources(dev, psc->malo_irq_spec, psc->malo_res_irq);
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bus_dma_tag_destroy(sc->malo_dmat);
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bus_release_resources(dev, psc->malo_mem_spec, psc->malo_res_mem);
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return (0);
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}
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static int
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malo_pci_shutdown(device_t dev)
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{
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struct malo_pci_softc *psc = device_get_softc(dev);
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malo_shutdown(&psc->malo_sc);
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return (0);
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}
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static int
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malo_pci_suspend(device_t dev)
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{
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struct malo_pci_softc *psc = device_get_softc(dev);
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malo_suspend(&psc->malo_sc);
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return (0);
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}
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static int
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malo_pci_resume(device_t dev)
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{
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struct malo_pci_softc *psc = device_get_softc(dev);
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malo_resume(&psc->malo_sc);
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return (0);
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}
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static device_method_t malo_pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, malo_pci_probe),
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DEVMETHOD(device_attach, malo_pci_attach),
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DEVMETHOD(device_detach, malo_pci_detach),
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DEVMETHOD(device_shutdown, malo_pci_shutdown),
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DEVMETHOD(device_suspend, malo_pci_suspend),
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DEVMETHOD(device_resume, malo_pci_resume),
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{ 0,0 }
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};
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static driver_t malo_pci_driver = {
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"malo",
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malo_pci_methods,
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sizeof(struct malo_pci_softc)
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};
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static devclass_t malo_devclass;
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DRIVER_MODULE(malo, pci, malo_pci_driver, malo_devclass, 0, 0);
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MODULE_VERSION(malo, 1);
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MODULE_DEPEND(malo, wlan, 1, 1, 1); /* 802.11 media layer */
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MODULE_DEPEND(malo, firmware, 1, 1, 1);
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