Author: marius
Date: Thu May 30 12:16:55 2013
New Revision: 251133
URL: http://svnweb.freebsd.org/changeset/base/251133

Log:
  - Merge from r249476: Ensure that PCI bus BUS_GET_DMA_TAG() method sees
    the actual PCI device which makes the request for DMA tag, instead of
    some descendant of the PCI device, by creating a pass-through trampoline.
  - Sprinkle const on tables.
  - Use NULL instead of 0 for pointers.
  - Take advantage of nitems().
  
  MFC after:    1 week

Modified:
  head/sys/dev/msk/if_msk.c
  head/sys/dev/sk/if_sk.c
  head/sys/dev/sk/if_skreg.h

Modified: head/sys/dev/msk/if_msk.c
==============================================================================
--- head/sys/dev/msk/if_msk.c   Thu May 30 11:10:42 2013        (r251132)
+++ head/sys/dev/msk/if_msk.c   Thu May 30 12:16:55 2013        (r251133)
@@ -162,7 +162,7 @@ TUNABLE_INT("hw.msk.jumbo_disable", &jum
 /*
  * Devices supported by this driver.
  */
-static struct msk_product {
+static const struct msk_product {
        uint16_t        msk_vendorid;
        uint16_t        msk_deviceid;
        const char      *msk_name;
@@ -257,6 +257,7 @@ static int mskc_shutdown(device_t);
 static int mskc_setup_rambuffer(struct msk_softc *);
 static int mskc_suspend(device_t);
 static int mskc_resume(device_t);
+static bus_dma_tag_t mskc_get_dma_tag(device_t, device_t);
 static void mskc_reset(struct msk_softc *);
 
 static int msk_probe(device_t);
@@ -334,6 +335,8 @@ static device_method_t mskc_methods[] = 
        DEVMETHOD(device_resume,        mskc_resume),
        DEVMETHOD(device_shutdown,      mskc_shutdown),
 
+       DEVMETHOD(bus_get_dma_tag,      mskc_get_dma_tag),
+
        DEVMETHOD_END
 };
 
@@ -368,9 +371,9 @@ static driver_t msk_driver = {
 
 static devclass_t msk_devclass;
 
-DRIVER_MODULE(mskc, pci, mskc_driver, mskc_devclass, 0, 0);
-DRIVER_MODULE(msk, mskc, msk_driver, msk_devclass, 0, 0);
-DRIVER_MODULE(miibus, msk, miibus_driver, miibus_devclass, 0, 0);
+DRIVER_MODULE(mskc, pci, mskc_driver, mskc_devclass, NULL, NULL);
+DRIVER_MODULE(msk, mskc, msk_driver, msk_devclass, NULL, NULL);
+DRIVER_MODULE(miibus, msk, miibus_driver, miibus_devclass, NULL, NULL);
 
 static struct resource_spec msk_res_spec_io[] = {
        { SYS_RES_IOPORT,       PCIR_BAR(1),    RF_ACTIVE },
@@ -1180,15 +1183,14 @@ msk_ioctl(struct ifnet *ifp, u_long comm
 static int
 mskc_probe(device_t dev)
 {
-       struct msk_product *mp;
+       const struct msk_product *mp;
        uint16_t vendor, devid;
        int i;
 
        vendor = pci_get_vendor(dev);
        devid = pci_get_device(dev);
        mp = msk_products;
-       for (i = 0; i < sizeof(msk_products)/sizeof(msk_products[0]);
-           i++, mp++) {
+       for (i = 0; i < nitems(msk_products); i++, mp++) {
                if (vendor == mp->msk_vendorid && devid == mp->msk_deviceid) {
                        device_set_desc(dev, mp->msk_name);
                        return (BUS_PROBE_DEFAULT);
@@ -2118,6 +2120,13 @@ mskc_detach(device_t dev)
        return (0);
 }
 
+static bus_dma_tag_t
+mskc_get_dma_tag(device_t bus, device_t child __unused)
+{
+
+       return (bus_get_dma_tag(bus));
+}
+
 struct msk_dmamap_arg {
        bus_addr_t      msk_busaddr;
 };

Modified: head/sys/dev/sk/if_sk.c
==============================================================================
--- head/sys/dev/sk/if_sk.c     Thu May 30 11:10:42 2013        (r251132)
+++ head/sys/dev/sk/if_sk.c     Thu May 30 12:16:55 2013        (r251133)
@@ -143,7 +143,7 @@ static const char rcsid[] =
   "$FreeBSD$";
 #endif
 
-static struct sk_type sk_devs[] = {
+static const struct sk_type sk_devs[] = {
        {
                VENDORID_SK,
                DEVICEID_SK_V1,
@@ -193,6 +193,7 @@ static int skc_detach(device_t);
 static int skc_shutdown(device_t);
 static int skc_suspend(device_t);
 static int skc_resume(device_t);
+static bus_dma_tag_t skc_get_dma_tag(device_t, device_t);
 static int sk_detach(device_t);
 static int sk_probe(device_t);
 static int sk_attach(device_t);
@@ -296,6 +297,8 @@ static device_method_t skc_methods[] = {
        DEVMETHOD(device_resume,        skc_resume),
        DEVMETHOD(device_shutdown,      skc_shutdown),
 
+       DEVMETHOD(bus_get_dma_tag,      skc_get_dma_tag),
+
        DEVMETHOD_END
 };
 
@@ -330,9 +333,9 @@ static driver_t sk_driver = {
 
 static devclass_t sk_devclass;
 
-DRIVER_MODULE(skc, pci, skc_driver, skc_devclass, 0, 0);
-DRIVER_MODULE(sk, skc, sk_driver, sk_devclass, 0, 0);
-DRIVER_MODULE(miibus, sk, miibus_driver, miibus_devclass, 0, 0);
+DRIVER_MODULE(skc, pci, skc_driver, skc_devclass, NULL, NULL);
+DRIVER_MODULE(sk, skc, sk_driver, sk_devclass, NULL, NULL);
+DRIVER_MODULE(miibus, sk, miibus_driver, miibus_devclass, NULL, NULL);
 
 static struct resource_spec sk_res_spec_io[] = {
        { SYS_RES_IOPORT,       PCIR_BAR(1),    RF_ACTIVE },
@@ -1186,7 +1189,7 @@ static int
 skc_probe(dev)
        device_t                dev;
 {
-       struct sk_type          *t = sk_devs;
+       const struct sk_type    *t = sk_devs;
 
        while(t->sk_name != NULL) {
                if ((pci_get_vendor(dev) == t->sk_vid) &&
@@ -1888,6 +1891,13 @@ skc_detach(dev)
        return(0);
 }
 
+static bus_dma_tag_t
+skc_get_dma_tag(device_t bus, device_t child __unused)
+{
+
+       return (bus_get_dma_tag(bus));
+}
+
 struct sk_dmamap_arg {
        bus_addr_t      sk_busaddr;
 };
@@ -3185,7 +3195,7 @@ sk_init_xmac(sc_if)
        struct sk_softc         *sc;
        struct ifnet            *ifp;
        u_int16_t               eaddr[(ETHER_ADDR_LEN+1)/2];
-       struct sk_bcom_hack     bhack[] = {
+       static const struct sk_bcom_hack bhack[] = {
        { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1104 }, { 0x17, 0x0013 },
        { 0x15, 0x0404 }, { 0x17, 0x8006 }, { 0x15, 0x0132 }, { 0x17, 0x8006 },
        { 0x15, 0x0232 }, { 0x17, 0x800D }, { 0x15, 0x000F }, { 0x18, 0x0420 },

Modified: head/sys/dev/sk/if_skreg.h
==============================================================================
--- head/sys/dev/sk/if_skreg.h  Thu May 30 11:10:42 2013        (r251132)
+++ head/sys/dev/sk/if_skreg.h  Thu May 30 12:16:55 2013        (r251133)
@@ -1289,7 +1289,7 @@
 struct sk_type {
        u_int16_t               sk_vid;
        u_int16_t               sk_did;
-       char                    *sk_name;
+       const char              *sk_name;
 };
 
 #define SK_ADDR_LO(x)  ((u_int64_t) (x) & 0xffffffff)
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