Merge tag 'm68k-for-v4.16-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:

  - first part of an overhaul of the NuBus subsystem, to bring it up to
    modern driver model standards

  - a race condition fix for Mac

  - defconfig updates

* tag 'm68k-for-v4.16-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  MAINTAINERS: Add NuBus subsystem entry
  m68k/mac: Fix race conditions in OSS interrupt dispatch
  nubus: Add support for the driver model
  nubus: Add expansion_type values for various Mac models
  nubus: Adopt standard linked list implementation
  nubus: Rename struct nubus_dev
  nubus: Rework /proc/bus/nubus/s/ implementation
  nubus: Generalize block resource handling
  nubus: Clean up whitespace
  nubus: Remove redundant code
  nubus: Call proc_mkdir() not more than once per slot directory
  nubus: Validate slot resource IDs
  nubus: Fix log spam
  nubus: Use static functions where possible
  nubus: Fix up header split
  nubus: Avoid array underflow and overflow
  m68k/defconfig: Update defconfigs for v4.15-rc1

MAINTAINERS

@@ -9757,6 +9757,15 @@ S:	Supported
 F:	Documentation/filesystems/ntfs.txt
 F:	fs/ntfs/
 
+NUBUS SUBSYSTEM
+M:	Finn Thain <fthain@telegraphics.com.au>
+L:	linux-m68k@lists.linux-m68k.org
+S:	Maintained
+F:	arch/*/include/asm/nubus.h
+F:	drivers/nubus/
+F:	include/linux/nubus.h
+F:	include/uapi/linux/nubus.h
+
 NVIDIA (rivafb and nvidiafb) FRAMEBUFFER DRIVER
 M:	Antonino Daplas <adaplas@gmail.com>
 L:	linux-fbdev@vger.kernel.org

arch/m68k/configs/amiga_defconfig

@@ -454,7 +454,6 @@ CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PPS_CLIENT_PARPORT=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_FB=y
 CONFIG_FB_CIRRUS=y
 CONFIG_FB_AMIGA=y
@@ -595,6 +594,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -624,6 +624,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -653,3 +654,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/apollo_defconfig

@@ -422,7 +422,6 @@ CONFIG_NTP_PPS=y
 CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_FB=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
@@ -554,6 +553,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -583,6 +583,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -612,3 +613,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/atari_defconfig

@@ -437,7 +437,6 @@ CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PPS_CLIENT_PARPORT=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_FB=y
 CONFIG_FB_ATARI=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
@@ -576,6 +575,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -605,6 +605,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -634,3 +635,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/bvme6000_defconfig

@@ -420,7 +420,6 @@ CONFIG_NTP_PPS=y
 CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_HID=m
 CONFIG_HIDRAW=y
 CONFIG_UHID=m
@@ -546,6 +545,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -575,6 +575,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -604,3 +605,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/hp300_defconfig

@@ -425,7 +425,6 @@ CONFIG_NTP_PPS=y
 CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_FB=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
@@ -556,6 +555,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -585,6 +585,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -614,3 +615,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/mac_defconfig

@@ -447,7 +447,6 @@ CONFIG_NTP_PPS=y
 CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_FB=y
 CONFIG_FB_VALKYRIE=y
 CONFIG_FB_MAC=y
@@ -578,6 +577,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -607,6 +607,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -636,3 +637,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/multi_defconfig

@@ -504,7 +504,6 @@ CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PPS_CLIENT_PARPORT=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_FB=y
 CONFIG_FB_CIRRUS=y
 CONFIG_FB_AMIGA=y
@@ -658,6 +657,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -687,6 +687,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -716,3 +717,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/mvme147_defconfig

@@ -420,7 +420,6 @@ CONFIG_NTP_PPS=y
 CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_HID=m
 CONFIG_HIDRAW=y
 CONFIG_UHID=m
@@ -546,6 +545,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -575,6 +575,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -604,3 +605,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/mvme16x_defconfig

@@ -420,7 +420,6 @@ CONFIG_NTP_PPS=y
 CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_HID=m
 CONFIG_HIDRAW=y
 CONFIG_UHID=m
@@ -546,6 +545,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -575,6 +575,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -604,3 +605,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/q40_defconfig

@@ -437,7 +437,6 @@ CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PPS_CLIENT_PARPORT=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_FB=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
@@ -569,6 +568,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -598,6 +598,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -627,3 +628,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/sun3_defconfig

@@ -419,7 +419,6 @@ CONFIG_NTP_PPS=y
 CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_FB=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
@@ -548,6 +547,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -576,6 +576,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -605,3 +606,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/configs/sun3x_defconfig

@@ -419,7 +419,6 @@ CONFIG_NTP_PPS=y
 CONFIG_PPS_CLIENT_LDISC=m
 CONFIG_PTP_1588_CLOCK=m
 # CONFIG_HWMON is not set
-# CONFIG_RC_CORE is not set
 CONFIG_FB=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
@@ -548,6 +547,7 @@ CONFIG_TEST_RHASHTABLE=m
 CONFIG_TEST_HASH=m
 CONFIG_TEST_USER_COPY=m
 CONFIG_TEST_BPF=m
+CONFIG_TEST_FIND_BIT=m
 CONFIG_TEST_FIRMWARE=m
 CONFIG_TEST_SYSCTL=m
 CONFIG_TEST_UDELAY=m
@@ -577,6 +577,7 @@ CONFIG_CRYPTO_RMD256=m
 CONFIG_CRYPTO_RMD320=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
 CONFIG_CRYPTO_TGR192=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES_TI=m
@@ -606,3 +607,4 @@ CONFIG_CRYPTO_USER_API_AEAD=m
 # CONFIG_CRYPTO_HW is not set
 CONFIG_CRC32_SELFTEST=m
 CONFIG_XZ_DEC_TEST=m
+CONFIG_STRING_SELFTEST=m

arch/m68k/include/asm/macintosh.h

@@ -33,7 +33,7 @@ struct mac_model
 	char ide_type;
 	char scc_type;
 	char ether_type;
-	char nubus_type;
+	char expansion_type;
 	char floppy_type;
 };
 
@@ -73,8 +73,11 @@ struct mac_model
 #define MAC_ETHER_SONIC		1
 #define MAC_ETHER_MACE		2
 
-#define MAC_NO_NUBUS		0
-#define MAC_NUBUS		1
+#define MAC_EXP_NONE		0
+#define MAC_EXP_PDS		1 /* Accepts only a PDS card */
+#define MAC_EXP_NUBUS		2 /* Accepts only NuBus card(s) */
+#define MAC_EXP_PDS_NUBUS	3 /* Accepts PDS card and/or NuBus card(s) */
+#define MAC_EXP_PDS_COMM	4 /* Accepts PDS card or Comm Slot card */
 
 #define MAC_FLOPPY_IWM		0
 #define MAC_FLOPPY_SWIM_ADDR1	1

arch/m68k/mac/oss.c

@@ -53,56 +53,41 @@ void __init oss_init(void)
 }
 
 /*
- * Handle miscellaneous OSS interrupts.
+ * Handle OSS interrupts.
+ * XXX how do you clear a pending IRQ? is it even necessary?
  */
 
-static void oss_irq(struct irq_desc *desc)
+static void oss_iopism_irq(struct irq_desc *desc)
 {
-	int events = oss->irq_pending &
-		(OSS_IP_IOPSCC | OSS_IP_SCSI | OSS_IP_IOPISM);
-
-	if (events & OSS_IP_IOPSCC) {
-		oss->irq_pending &= ~OSS_IP_IOPSCC;
-		generic_handle_irq(IRQ_MAC_SCC);
-	}
-
-	if (events & OSS_IP_SCSI) {
-		oss->irq_pending &= ~OSS_IP_SCSI;
-		generic_handle_irq(IRQ_MAC_SCSI);
-	}
-
-	if (events & OSS_IP_IOPISM) {
-		oss->irq_pending &= ~OSS_IP_IOPISM;
-		generic_handle_irq(IRQ_MAC_ADB);
-	}
+	generic_handle_irq(IRQ_MAC_ADB);
 }
 
-/*
- * Nubus IRQ handler, OSS style
- *
- * Unlike the VIA/RBV this is on its own autovector interrupt level.
- */
+static void oss_scsi_irq(struct irq_desc *desc)
+{
+	generic_handle_irq(IRQ_MAC_SCSI);
+}
 
 static void oss_nubus_irq(struct irq_desc *desc)
 {
-	int events, irq_bit, i;
+	u16 events, irq_bit;
+	int irq_num;
 
 	events = oss->irq_pending & OSS_IP_NUBUS;
-	if (!events)
-		return;
-
-	/* There are only six slots on the OSS, not seven */
-
-	i = 6;
-	irq_bit = 0x40;
+	irq_num = NUBUS_SOURCE_BASE + 5;
+	irq_bit = OSS_IP_NUBUS5;
 	do {
-		--i;
-		irq_bit >>= 1;
 		if (events & irq_bit) {
-			oss->irq_pending &= ~irq_bit;
-			generic_handle_irq(NUBUS_SOURCE_BASE + i);
+			events &= ~irq_bit;
+			generic_handle_irq(irq_num);
 		}
-	} while(events & (irq_bit - 1));
+		--irq_num;
+		irq_bit >>= 1;
+	} while (events);
+}
+
+static void oss_iopscc_irq(struct irq_desc *desc)
+{
+	generic_handle_irq(IRQ_MAC_SCC);
 }
 
 /*
@@ -122,14 +107,14 @@ static void oss_nubus_irq(struct irq_desc *desc)
 
 void __init oss_register_interrupts(void)
 {
-	irq_set_chained_handler(OSS_IRQLEV_IOPISM, oss_irq);
-	irq_set_chained_handler(OSS_IRQLEV_SCSI,   oss_irq);
+	irq_set_chained_handler(OSS_IRQLEV_IOPISM, oss_iopism_irq);
+	irq_set_chained_handler(OSS_IRQLEV_SCSI,   oss_scsi_irq);
 	irq_set_chained_handler(OSS_IRQLEV_NUBUS,  oss_nubus_irq);
-	irq_set_chained_handler(OSS_IRQLEV_IOPSCC, oss_irq);
+	irq_set_chained_handler(OSS_IRQLEV_IOPSCC, oss_iopscc_irq);
 	irq_set_chained_handler(OSS_IRQLEV_VIA1,   via1_irq);
 
 	/* OSS_VIA1 gets enabled here because it has no machspec interrupt. */
-	oss->irq_level[OSS_VIA1] = IRQ_AUTO_6;
+	oss->irq_level[OSS_VIA1] = OSS_IRQLEV_VIA1;
 }
 
 /*

drivers/net/ethernet/8390/mac8390.c

@@ -123,7 +123,8 @@ enum mac8390_access {
 };
 
 extern int mac8390_memtest(struct net_device *dev);
-static int mac8390_initdev(struct net_device *dev, struct nubus_dev *ndev,
+static int mac8390_initdev(struct net_device *dev,
+			   struct nubus_rsrc *ndev,
 			   enum mac8390_type type);
 
 static int mac8390_open(struct net_device *dev);
@@ -169,11 +170,11 @@ static void word_memcpy_tocard(unsigned long tp, const void *fp, int count);
 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count);
 static u32 mac8390_msg_enable;
 
-static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
+static enum mac8390_type __init mac8390_ident(struct nubus_rsrc *fres)
 {
-	switch (dev->dr_sw) {
+	switch (fres->dr_sw) {
 	case NUBUS_DRSW_3COM:
-		switch (dev->dr_hw) {
+		switch (fres->dr_hw) {
 		case NUBUS_DRHW_APPLE_SONIC_NB:
 		case NUBUS_DRHW_APPLE_SONIC_LC:
 		case NUBUS_DRHW_SONNET:
@@ -184,7 +185,7 @@ static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
 		break;
 
 	case NUBUS_DRSW_APPLE:
-		switch (dev->dr_hw) {
+		switch (fres->dr_hw) {
 		case NUBUS_DRHW_ASANTE_LC:
 			return MAC8390_NONE;
 		case NUBUS_DRHW_CABLETRON:
@@ -201,7 +202,7 @@ static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
 	case NUBUS_DRSW_TECHWORKS:
 	case NUBUS_DRSW_DAYNA2:
 	case NUBUS_DRSW_DAYNA_LC:
-		if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
+		if (fres->dr_hw == NUBUS_DRHW_CABLETRON)
 			return MAC8390_CABLETRON;
 		else
 			return MAC8390_APPLE;
@@ -212,7 +213,7 @@ static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
 		break;
 
 	case NUBUS_DRSW_KINETICS:
-		switch (dev->dr_hw) {
+		switch (fres->dr_hw) {
 		case NUBUS_DRHW_INTERLAN:
 			return MAC8390_INTERLAN;
 		default:
@@ -225,8 +226,8 @@ static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
 		 * These correspond to Dayna Sonic cards
 		 * which use the macsonic driver
 		 */
-		if (dev->dr_hw == NUBUS_DRHW_SMC9194 ||
-		    dev->dr_hw == NUBUS_DRHW_INTERLAN)
+		if (fres->dr_hw == NUBUS_DRHW_SMC9194 ||
+		    fres->dr_hw == NUBUS_DRHW_INTERLAN)
 			return MAC8390_NONE;
 		else
 			return MAC8390_DAYNA;
@@ -289,7 +290,8 @@ static int __init mac8390_memsize(unsigned long membase)
 	return i * 0x1000;
 }
 
-static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev,
+static bool __init mac8390_init(struct net_device *dev,
+				struct nubus_rsrc *ndev,
 				enum mac8390_type cardtype)
 {
 	struct nubus_dir dir;
@@ -394,7 +396,7 @@ static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev,
 struct net_device * __init mac8390_probe(int unit)
 {
 	struct net_device *dev;
-	struct nubus_dev *ndev = NULL;
+	struct nubus_rsrc *ndev = NULL;
 	int err = -ENODEV;
 	struct ei_device *ei_local;
 
@@ -414,8 +416,11 @@ struct net_device * __init mac8390_probe(int unit)
 	if (unit >= 0)
 		sprintf(dev->name, "eth%d", unit);
 
-	while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET,
-				       ndev))) {
+	for_each_func_rsrc(ndev) {
+		if (ndev->category != NUBUS_CAT_NETWORK ||
+		    ndev->type != NUBUS_TYPE_ETHERNET)
+			continue;
+
 		/* Have we seen it already? */
 		if (slots & (1 << ndev->board->slot))
 			continue;
@@ -489,7 +494,7 @@ static const struct net_device_ops mac8390_netdev_ops = {
 };
 
 static int __init mac8390_initdev(struct net_device *dev,
-				  struct nubus_dev *ndev,
+				  struct nubus_rsrc *ndev,
 				  enum mac8390_type type)
 {
 	static u32 fwrd4_offsets[16] = {

drivers/net/ethernet/cirrus/mac89x0.c

@@ -187,6 +187,7 @@ struct net_device * __init mac89x0_probe(int unit)
 	unsigned long ioaddr;
 	unsigned short sig;
 	int err = -ENODEV;
+	struct nubus_rsrc *fres;
 
 	if (!MACH_IS_MAC)
 		return ERR_PTR(-ENODEV);
@@ -207,8 +208,9 @@ struct net_device * __init mac89x0_probe(int unit)
 	/* We might have to parameterize this later */
 	slot = 0xE;
 	/* Get out now if there's a real NuBus card in slot E */
-	if (nubus_find_slot(slot, NULL) != NULL)
-		goto out;
+	for_each_func_rsrc(fres)
+		if (fres->board->slot == slot)
+			goto out;
 
 	/* The pseudo-ISA bits always live at offset 0x300 (gee,
            wonder why...) */

drivers/net/ethernet/natsemi/macsonic.c

@@ -311,7 +311,7 @@ static int mac_onboard_sonic_probe(struct net_device *dev)
 {
 	struct sonic_local* lp = netdev_priv(dev);
 	int sr;
-	int commslot = 0;
+	bool commslot = macintosh_config->expansion_type == MAC_EXP_PDS_COMM;
 
 	if (!MACH_IS_MAC)
 		return -ENODEV;
@@ -322,10 +322,7 @@ static int mac_onboard_sonic_probe(struct net_device *dev)
 	   Ethernet (BTW, the Ethernet *is* always at the same
 	   address, and nothing else lives there, at least if Apple's
 	   documentation is to be believed) */
-	if (macintosh_config->ident == MAC_MODEL_Q630 ||
-	    macintosh_config->ident == MAC_MODEL_P588 ||
-	    macintosh_config->ident == MAC_MODEL_P575 ||
-	    macintosh_config->ident == MAC_MODEL_C610) {
+	if (commslot || macintosh_config->ident == MAC_MODEL_C610) {
 		int card_present;
 
 		card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
@@ -333,7 +330,6 @@ static int mac_onboard_sonic_probe(struct net_device *dev)
 			printk("none.\n");
 			return -ENODEV;
 		}
-		commslot = 1;
 	}
 
 	printk("yes\n");
@@ -428,26 +424,26 @@ static int mac_nubus_sonic_ethernet_addr(struct net_device *dev,
 	return 0;
 }
 
-static int macsonic_ident(struct nubus_dev *ndev)
+static int macsonic_ident(struct nubus_rsrc *fres)
 {
-	if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC &&
-	    ndev->dr_sw == NUBUS_DRSW_SONIC_LC)
+	if (fres->dr_hw == NUBUS_DRHW_ASANTE_LC &&
+	    fres->dr_sw == NUBUS_DRSW_SONIC_LC)
 		return MACSONIC_DAYNALINK;
-	if (ndev->dr_hw == NUBUS_DRHW_SONIC &&
-	    ndev->dr_sw == NUBUS_DRSW_APPLE) {
+	if (fres->dr_hw == NUBUS_DRHW_SONIC &&
+	    fres->dr_sw == NUBUS_DRSW_APPLE) {
 		/* There has to be a better way to do this... */
-		if (strstr(ndev->board->name, "DuoDock"))
+		if (strstr(fres->board->name, "DuoDock"))
 			return MACSONIC_DUODOCK;
 		else
 			return MACSONIC_APPLE;
 	}
 
-	if (ndev->dr_hw == NUBUS_DRHW_SMC9194 &&
-	    ndev->dr_sw == NUBUS_DRSW_DAYNA)
+	if (fres->dr_hw == NUBUS_DRHW_SMC9194 &&
+	    fres->dr_sw == NUBUS_DRSW_DAYNA)
 		return MACSONIC_DAYNA;
 
-	if (ndev->dr_hw == NUBUS_DRHW_APPLE_SONIC_LC &&
-	    ndev->dr_sw == 0) { /* huh? */
+	if (fres->dr_hw == NUBUS_DRHW_APPLE_SONIC_LC &&
+	    fres->dr_sw == 0) { /* huh? */
 		return MACSONIC_APPLE16;
 	}
 	return -1;
@@ -456,7 +452,7 @@ static int macsonic_ident(struct nubus_dev *ndev)
 static int mac_nubus_sonic_probe(struct net_device *dev)
 {
 	static int slots;
-	struct nubus_dev* ndev = NULL;
+	struct nubus_rsrc *ndev = NULL;
 	struct sonic_local* lp = netdev_priv(dev);
 	unsigned long base_addr, prom_addr;
 	u16 sonic_dcr;
@@ -464,9 +460,11 @@ static int mac_nubus_sonic_probe(struct net_device *dev)
 	int reg_offset, dma_bitmode;
 
 	/* Find the first SONIC that hasn't been initialized already */
-	while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
-				       NUBUS_TYPE_ETHERNET, ndev)) != NULL)
-	{
+	for_each_func_rsrc(ndev) {
+		if (ndev->category != NUBUS_CAT_NETWORK ||
+		    ndev->type != NUBUS_TYPE_ETHERNET)
+			continue;
+
 		/* Have we seen it already? */
 		if (slots & (1<<ndev->board->slot))
 			continue;

drivers/nubus/Makefile

@@ -2,6 +2,6 @@
 # Makefile for the nubus specific drivers.
 #
 
-obj-y   := nubus.o
+obj-y := nubus.o bus.o
 
 obj-$(CONFIG_PROC_FS) += proc.o

drivers/nubus/bus.c

+// SPDX-License-Identifier: GPL-2.0
+//
+// Bus implementation for the NuBus subsystem.
+//
+// Copyright (C) 2017 Finn Thain
+
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/nubus.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+
+#define to_nubus_board(d)       container_of(d, struct nubus_board, dev)
+#define to_nubus_driver(d)      container_of(d, struct nubus_driver, driver)
+
+static int nubus_bus_match(struct device *dev, struct device_driver *driver)
+{
+	return 1;
+}
+
+static int nubus_device_probe(struct device *dev)
+{
+	struct nubus_driver *ndrv = to_nubus_driver(dev->driver);
+	int err = -ENODEV;
+
+	if (ndrv->probe)
+		err = ndrv->probe(to_nubus_board(dev));
+	return err;
+}
+
+static int nubus_device_remove(struct device *dev)
+{
+	struct nubus_driver *ndrv = to_nubus_driver(dev->driver);
+	int err = -ENODEV;
+
+	if (dev->driver && ndrv->remove)
+		err = ndrv->remove(to_nubus_board(dev));
+	return err;
+}
+
+struct bus_type nubus_bus_type = {
+	.name		= "nubus",
+	.match		= nubus_bus_match,
+	.probe		= nubus_device_probe,
+	.remove		= nubus_device_remove,
+};
+EXPORT_SYMBOL(nubus_bus_type);
+
+int nubus_driver_register(struct nubus_driver *ndrv)
+{
+	ndrv->driver.bus = &nubus_bus_type;
+	return driver_register(&ndrv->driver);
+}
+EXPORT_SYMBOL(nubus_driver_register);
+
+void nubus_driver_unregister(struct nubus_driver *ndrv)
+{
+	driver_unregister(&ndrv->driver);
+}
+EXPORT_SYMBOL(nubus_driver_unregister);
+
+static struct device nubus_parent = {
+	.init_name	= "nubus",
+};
+
+int __init nubus_bus_register(void)
+{
+	int err;
+
+	err = device_register(&nubus_parent);
+	if (err)
+		return err;
+
+	err = bus_register(&nubus_bus_type);
+	if (!err)
+		return 0;
+
+	device_unregister(&nubus_parent);
+	return err;
+}
+
+static void nubus_device_release(struct device *dev)
+{
+	struct nubus_board *board = to_nubus_board(dev);
+	struct nubus_rsrc *fres, *tmp;
+
+	list_for_each_entry_safe(fres, tmp, &nubus_func_rsrcs, list)
+		if (fres->board == board) {
+			list_del(&fres->list);
+			kfree(fres);
+		}
+	kfree(board);
+}
+
+int nubus_device_register(struct nubus_board *board)
+{
+	board->dev.parent = &nubus_parent;
+	board->dev.release = nubus_device_release;
+	board->dev.bus = &nubus_bus_type;
+	dev_set_name(&board->dev, "slot.%X", board->slot);
+	return device_register(&board->dev);
+}
+
+static int nubus_print_device_name_fn(struct device *dev, void *data)
+{
+	struct nubus_board *board = to_nubus_board(dev);
+	struct seq_file *m = data;
+
+	seq_printf(m, "Slot %X: %s\n", board->slot, board->name);
+	return 0;
+}
+
+int nubus_proc_show(struct seq_file *m, void *data)
+{
+	return bus_for_each_dev(&nubus_bus_type, NULL, m,
+				nubus_print_device_name_fn);
+}

drivers/nubus/proc.c

@@ -11,39 +11,37 @@
    structure in /proc analogous to the structure of the NuBus ROM
    resources.
 
-   Therefore each NuBus device is in fact a directory, which may in
-   turn contain subdirectories.  The "files" correspond to NuBus
-   resource records.  For those types of records which we know how to
-   convert to formats that are meaningful to userspace (mostly just
-   icons) these files will provide "cooked" data.  Otherwise they will
-   simply provide raw access (read-only of course) to the ROM.  */
+   Therefore each board function gets a directory, which may in turn
+   contain subdirectories.  Each slot resource is a file.  Unrecognized
+   resources are empty files, since every resource ID requires a special
+   case (e.g. if the resource ID implies a directory or block, then its
+   value has to be interpreted as a slot ROM pointer etc.).
+ */
 
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/nubus.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/module.h>
-
 #include <linux/uaccess.h>
 #include <asm/byteorder.h>
 
+/*
+ * /proc/bus/nubus/devices stuff
+ */
+
 static int
 nubus_devices_proc_show(struct seq_file *m, void *v)
 {
-	struct nubus_dev *dev = nubus_devices;
-
-	while (dev) {
-		seq_printf(m, "%x\t%04x %04x %04x %04x",
-			      dev->board->slot,
-			      dev->category,
-			      dev->type,
-			      dev->dr_sw,
-			      dev->dr_hw);
-		seq_printf(m, "\t%08lx\n", dev->board->slot_addr);
-		dev = dev->next;
-	}
+	struct nubus_rsrc *fres;
+
+	for_each_func_rsrc(fres)
+		seq_printf(m, "%x\t%04x %04x %04x %04x\t%08lx\n",
+			   fres->board->slot, fres->category, fres->type,
+			   fres->dr_sw, fres->dr_hw, fres->board->slot_addr);
 	return 0;
 }
 
@@ -61,174 +59,163 @@ static const struct file_operations nubus_devices_proc_fops = {
 
 static struct proc_dir_entry *proc_bus_nubus_dir;
 
-static const struct file_operations nubus_proc_subdir_fops = {
-#warning Need to set some I/O handlers here
-};
+/*
+ * /proc/bus/nubus/x/ stuff
+ */
 
-static void nubus_proc_subdir(struct nubus_dev* dev,
-			      struct proc_dir_entry* parent,
-			      struct nubus_dir* dir)
+struct proc_dir_entry *nubus_proc_add_board(struct nubus_board *board)
 {
-	struct nubus_dirent ent;
-
-	/* Some of these are directories, others aren't */
-	while (nubus_readdir(dir, &ent) != -1) {
-		char name[8];
-		struct proc_dir_entry* e;
-		
-		sprintf(name, "%x", ent.type);
-		e = proc_create(name, S_IFREG | S_IRUGO | S_IWUSR, parent,
-				&nubus_proc_subdir_fops);
-		if (!e)
-			return;
-	}
+	char name[2];
+
+	if (!proc_bus_nubus_dir)
+		return NULL;
+	snprintf(name, sizeof(name), "%x", board->slot);
+	return proc_mkdir(name, proc_bus_nubus_dir);
 }
 
-/* Can't do this recursively since the root directory is structured
-   somewhat differently from the subdirectories */
-static void nubus_proc_populate(struct nubus_dev* dev,
-				struct proc_dir_entry* parent,
-				struct nubus_dir* root)
+/* The PDE private data for any directory under /proc/bus/nubus/x/
+ * is the bytelanes value for the board in slot x.
+ */
+
+struct proc_dir_entry *nubus_proc_add_rsrc_dir(struct proc_dir_entry *procdir,
+					       const struct nubus_dirent *ent,
+					       struct nubus_board *board)
 {
-	struct nubus_dirent ent;
-
-	/* We know these are all directories (board resource + one or
-	   more functional resources) */
-	while (nubus_readdir(root, &ent) != -1) {
-		char name[8];
-		struct proc_dir_entry* e;
-		struct nubus_dir dir;
-		
-		sprintf(name, "%x", ent.type);
-		e = proc_mkdir(name, parent);
-		if (!e) return;
-
-		/* And descend */
-		if (nubus_get_subdir(&ent, &dir) == -1) {
-			/* This shouldn't happen */
-			printk(KERN_ERR "NuBus root directory node %x:%x has no subdir!\n",
-			       dev->board->slot, ent.type);
-			continue;
-		} else {
-			nubus_proc_subdir(dev, e, &dir);
-		}
-	}
+	char name[9];
+	int lanes = board->lanes;
+
+	if (!procdir)
+		return NULL;
+	snprintf(name, sizeof(name), "%x", ent->type);
+	return proc_mkdir_data(name, 0555, procdir, (void *)lanes);
 }
 
-int nubus_proc_attach_device(struct nubus_dev *dev)
+/* The PDE private data for a file under /proc/bus/nubus/x/ is a pointer to
+ * an instance of the following structure, which gives the location and size
+ * of the resource data in the slot ROM. For slot resources which hold only a
+ * small integer, this integer value is stored directly and size is set to 0.
+ * A NULL private data pointer indicates an unrecognized resource.
+ */
+
+struct nubus_proc_pde_data {
+	unsigned char *res_ptr;
+	unsigned int res_size;
+};
+
+static struct nubus_proc_pde_data *
+nubus_proc_alloc_pde_data(unsigned char *ptr, unsigned int size)
 {
-	struct proc_dir_entry *e;
-	struct nubus_dir root;
-	char name[8];
-
-	if (dev == NULL) {
-		printk(KERN_ERR
-		       "NULL pointer in nubus_proc_attach_device, shoot the programmer!\n");
-		return -1;
-	}
-		
-	if (dev->board == NULL) {
-		printk(KERN_ERR
-		       "NULL pointer in nubus_proc_attach_device, shoot the programmer!\n");
-		printk("dev = %p, dev->board = %p\n", dev, dev->board);
-		return -1;
-	}
-		
-	/* Create a directory */
-	sprintf(name, "%x", dev->board->slot);
-	e = dev->procdir = proc_mkdir(name, proc_bus_nubus_dir);
-	if (!e)
-		return -ENOMEM;
+	struct nubus_proc_pde_data *pde_data;
 
-	/* Now recursively populate it with files */
-	nubus_get_root_dir(dev->board, &root);
-	nubus_proc_populate(dev, e, &root);
+	pde_data = kmalloc(sizeof(*pde_data), GFP_KERNEL);
+	if (!pde_data)
+		return NULL;
 
-	return 0;
+	pde_data->res_ptr = ptr;
+	pde_data->res_size = size;
+	return pde_data;
 }
-EXPORT_SYMBOL(nubus_proc_attach_device);
 
-/*
- * /proc/nubus stuff
- */
-static int nubus_proc_show(struct seq_file *m, void *v)
+static int nubus_proc_rsrc_show(struct seq_file *m, void *v)
 {
-	const struct nubus_board *board = v;
+	struct inode *inode = m->private;
+	struct nubus_proc_pde_data *pde_data;
 
-	/* Display header on line 1 */
-	if (v == SEQ_START_TOKEN)
-		seq_puts(m, "Nubus devices found:\n");
-	else
-		seq_printf(m, "Slot %X: %s\n", board->slot, board->name);
+	pde_data = PDE_DATA(inode);
+	if (!pde_data)
+		return 0;
+
+	if (pde_data->res_size > m->size)
+		return -EFBIG;
+
+	if (pde_data->res_size) {
+		int lanes = (int)proc_get_parent_data(inode);
+		struct nubus_dirent ent;
+
+		if (!lanes)
+			return 0;
+
+		ent.mask = lanes;
+		ent.base = pde_data->res_ptr;
+		ent.data = 0;
+		nubus_seq_write_rsrc_mem(m, &ent, pde_data->res_size);
+	} else {
+		unsigned int data = (unsigned int)pde_data->res_ptr;
+
+		seq_putc(m, data >> 16);
+		seq_putc(m, data >> 8);
+		seq_putc(m, data >> 0);
+	}
 	return 0;
 }
 
-static void *nubus_proc_start(struct seq_file *m, loff_t *_pos)
+static int nubus_proc_rsrc_open(struct inode *inode, struct file *file)
 {
-	struct nubus_board *board;
-	unsigned pos;
-
-	if (*_pos > LONG_MAX)
-		return NULL;
-	pos = *_pos;
-	if (pos == 0)
-		return SEQ_START_TOKEN;
-	for (board = nubus_boards; board; board = board->next)
-		if (--pos == 0)
-			break;
-	return board;
+	return single_open(file, nubus_proc_rsrc_show, inode);
 }
 
-static void *nubus_proc_next(struct seq_file *p, void *v, loff_t *_pos)
+static const struct file_operations nubus_proc_rsrc_fops = {
+	.open		= nubus_proc_rsrc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir,
+			     const struct nubus_dirent *ent,
+			     unsigned int size)
 {
-	/* Walk the list of NuBus boards */
-	struct nubus_board *board = v;
-
-	++*_pos;
-	if (v == SEQ_START_TOKEN)
-		board = nubus_boards;
-	else if (board)
-		board = board->next;
-	return board;
+	char name[9];
+	struct nubus_proc_pde_data *pde_data;
+
+	if (!procdir)
+		return;
+
+	snprintf(name, sizeof(name), "%x", ent->type);
+	if (size)
+		pde_data = nubus_proc_alloc_pde_data(nubus_dirptr(ent), size);
+	else
+		pde_data = NULL;
+	proc_create_data(name, S_IFREG | 0444, procdir,
+			 &nubus_proc_rsrc_fops, pde_data);
 }
 
-static void nubus_proc_stop(struct seq_file *p, void *v)
+void nubus_proc_add_rsrc(struct proc_dir_entry *procdir,
+			 const struct nubus_dirent *ent)
 {
+	char name[9];
+	unsigned char *data = (unsigned char *)ent->data;
+
+	if (!procdir)
+		return;
+
+	snprintf(name, sizeof(name), "%x", ent->type);
+	proc_create_data(name, S_IFREG | 0444, procdir,
+			 &nubus_proc_rsrc_fops,
+			 nubus_proc_alloc_pde_data(data, 0));
 }
 
-static const struct seq_operations nubus_proc_seqops = {
-	.start	= nubus_proc_start,
-	.next	= nubus_proc_next,
-	.stop	= nubus_proc_stop,
-	.show	= nubus_proc_show,
-};
+/*
+ * /proc/nubus stuff
+ */
 
 static int nubus_proc_open(struct inode *inode, struct file *file)
 {
-	return seq_open(file, &nubus_proc_seqops);
+	return single_open(file, nubus_proc_show, NULL);
 }
 
 static const struct file_operations nubus_proc_fops = {
 	.open		= nubus_proc_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
-	.release	= seq_release,
+	.release	= single_release,
 };
 
-void __init proc_bus_nubus_add_devices(void)
-{
-	struct nubus_dev *dev;
-	
-	for(dev = nubus_devices; dev; dev = dev->next)
-		nubus_proc_attach_device(dev);
-}
-
 void __init nubus_proc_init(void)
 {
 	proc_create("nubus", 0, NULL, &nubus_proc_fops);
-	if (!MACH_IS_MAC)
-		return;
 	proc_bus_nubus_dir = proc_mkdir("bus/nubus", NULL);
+	if (!proc_bus_nubus_dir)
+		return;
 	proc_create("devices", 0, proc_bus_nubus_dir, &nubus_devices_proc_fops);
-	proc_bus_nubus_add_devices();
 }

drivers/video/fbdev/macfb.c

@@ -556,7 +556,7 @@ static void __init iounmap_macfb(void)
 static int __init macfb_init(void)
 {
 	int video_cmap_len, video_is_nubus = 0;
-	struct nubus_dev* ndev = NULL;
+	struct nubus_rsrc *ndev = NULL;
 	char *option = NULL;
 	int err;
 
@@ -670,15 +670,17 @@ static int __init macfb_init(void)
 	 * code is really broken :-)
 	 */
 
-	while ((ndev = nubus_find_type(NUBUS_CAT_DISPLAY,
-				       NUBUS_TYPE_VIDEO, ndev)))
-	{
+	for_each_func_rsrc(ndev) {
 		unsigned long base = ndev->board->slot_addr;
 
 		if (mac_bi_data.videoaddr < base ||
 		    mac_bi_data.videoaddr - base > 0xFFFFFF)
 			continue;
 
+		if (ndev->category != NUBUS_CAT_DISPLAY ||
+		    ndev->type != NUBUS_TYPE_VIDEO)
+			continue;
+
 		video_is_nubus = 1;
 		slot_addr = (unsigned char *)base;
 

include/linux/nubus.h

@@ -5,20 +5,36 @@
   Originally written by Alan Cox.
 
   Hacked to death by C. Scott Ananian and David Huggins-Daines.
-  
-  Some of the constants in here are from the corresponding
-  NetBSD/OpenBSD header file, by Allen Briggs.  We figured out the
-  rest of them on our own. */
+*/
+
 #ifndef LINUX_NUBUS_H
 #define LINUX_NUBUS_H
 
+#include <linux/device.h>
 #include <asm/nubus.h>
 #include <uapi/linux/nubus.h>
 
+struct proc_dir_entry;
+struct seq_file;
+
+struct nubus_dir {
+	unsigned char *base;
+	unsigned char *ptr;
+	int done;
+	int mask;
+	struct proc_dir_entry *procdir;
+};
+
+struct nubus_dirent {
+	unsigned char *base;
+	unsigned char type;
+	__u32 data;	/* Actually 24 bits used */
+	int mask;
+};
+
 struct nubus_board {
-	struct nubus_board* next;
-	struct nubus_dev* first_dev;
-	
+	struct device dev;
+
 	/* Only 9-E actually exist, though 0-8 are also theoretically
 	   possible, and 0 is a special case which represents the
 	   motherboard and onboard peripherals (Ethernet, video) */
@@ -27,10 +43,10 @@ struct nubus_board {
 	char name[64];
 
 	/* Format block */
-	unsigned char* fblock;
+	unsigned char *fblock;
 	/* Root directory (does *not* always equal fblock + doffset!) */
-	unsigned char* directory;
-	
+	unsigned char *directory;
+
 	unsigned long slot_addr;
 	/* Offset to root directory (sometimes) */
 	unsigned long doffset;
@@ -41,15 +57,15 @@ struct nubus_board {
 	unsigned char rev;
 	unsigned char format;
 	unsigned char lanes;
-};
 
-struct nubus_dev {
-	/* Next link in device list */
-	struct nubus_dev* next;
 	/* Directory entry in /proc/bus/nubus */
-	struct proc_dir_entry* procdir;
+	struct proc_dir_entry *procdir;
+};
+
+struct nubus_rsrc {
+	struct list_head list;
 
-	/* The functional resource ID of this device */
+	/* The functional resource ID */
 	unsigned char resid;
 	/* These are mostly here for convenience; we could always read
 	   them from the ROMs if we wanted to */
@@ -57,79 +73,116 @@ struct nubus_dev {
 	unsigned short type;
 	unsigned short dr_sw;
 	unsigned short dr_hw;
-	/* This is the device's name rather than the board's.
-	   Sometimes they are different.  Usually the board name is
-	   more correct. */
-	char name[64];
-	/* MacOS driver (I kid you not) */
-	unsigned char* driver;
-	/* Actually this is an offset */
-	unsigned long iobase;
-	unsigned long iosize;
-	unsigned char flags, hwdevid;
-	
+
 	/* Functional directory */
-	unsigned char* directory;
+	unsigned char *directory;
 	/* Much of our info comes from here */
-	struct nubus_board* board;
+	struct nubus_board *board;
+};
+
+/* This is all NuBus functional resources (used to find devices later on) */
+extern struct list_head nubus_func_rsrcs;
+
+struct nubus_driver {
+	struct device_driver driver;
+	int (*probe)(struct nubus_board *board);
+	int (*remove)(struct nubus_board *board);
 };
 
-/* This is all NuBus devices (used to find devices later on) */
-extern struct nubus_dev* nubus_devices;
-/* This is all NuBus cards */
-extern struct nubus_board* nubus_boards;
+extern struct bus_type nubus_bus_type;
 
 /* Generic NuBus interface functions, modelled after the PCI interface */
-void nubus_scan_bus(void);
 #ifdef CONFIG_PROC_FS
-extern void nubus_proc_init(void);
+void nubus_proc_init(void);
+struct proc_dir_entry *nubus_proc_add_board(struct nubus_board *board);
+struct proc_dir_entry *nubus_proc_add_rsrc_dir(struct proc_dir_entry *procdir,
+					       const struct nubus_dirent *ent,
+					       struct nubus_board *board);
+void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir,
+			     const struct nubus_dirent *ent,
+			     unsigned int size);
+void nubus_proc_add_rsrc(struct proc_dir_entry *procdir,
+			 const struct nubus_dirent *ent);
 #else
 static inline void nubus_proc_init(void) {}
+static inline
+struct proc_dir_entry *nubus_proc_add_board(struct nubus_board *board)
+{ return NULL; }
+static inline
+struct proc_dir_entry *nubus_proc_add_rsrc_dir(struct proc_dir_entry *procdir,
+					       const struct nubus_dirent *ent,
+					       struct nubus_board *board)
+{ return NULL; }
+static inline void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir,
+					   const struct nubus_dirent *ent,
+					   unsigned int size) {}
+static inline void nubus_proc_add_rsrc(struct proc_dir_entry *procdir,
+				       const struct nubus_dirent *ent) {}
 #endif
-int get_nubus_list(char *buf);
-int nubus_proc_attach_device(struct nubus_dev *dev);
-/* If we need more precision we can add some more of these */
-struct nubus_dev* nubus_find_device(unsigned short category,
-				    unsigned short type,
-				    unsigned short dr_hw,
-				    unsigned short dr_sw,
-				    const struct nubus_dev* from);
-struct nubus_dev* nubus_find_type(unsigned short category,
-				  unsigned short type,
-				  const struct nubus_dev* from);
-/* Might have more than one device in a slot, you know... */
-struct nubus_dev* nubus_find_slot(unsigned int slot,
-				  const struct nubus_dev* from);
+
+struct nubus_rsrc *nubus_first_rsrc_or_null(void);
+struct nubus_rsrc *nubus_next_rsrc_or_null(struct nubus_rsrc *from);
+
+#define for_each_func_rsrc(f) \
+	for (f = nubus_first_rsrc_or_null(); f; f = nubus_next_rsrc_or_null(f))
+
+#define for_each_board_func_rsrc(b, f) \
+	for_each_func_rsrc(f) if (f->board != b) {} else
 
 /* These are somewhat more NuBus-specific.  They all return 0 for
    success and -1 for failure, as you'd expect. */
 
 /* The root directory which contains the board and functional
    directories */
-int nubus_get_root_dir(const struct nubus_board* board,
-		       struct nubus_dir* dir);
+int nubus_get_root_dir(const struct nubus_board *board,
+		       struct nubus_dir *dir);
 /* The board directory */
-int nubus_get_board_dir(const struct nubus_board* board,
-			struct nubus_dir* dir);
+int nubus_get_board_dir(const struct nubus_board *board,
+			struct nubus_dir *dir);
 /* The functional directory */
-int nubus_get_func_dir(const struct nubus_dev* dev,
-		       struct nubus_dir* dir);
+int nubus_get_func_dir(const struct nubus_rsrc *fres, struct nubus_dir *dir);
 
 /* These work on any directory gotten via the above */
-int nubus_readdir(struct nubus_dir* dir,
-		  struct nubus_dirent* ent);
-int nubus_find_rsrc(struct nubus_dir* dir,
+int nubus_readdir(struct nubus_dir *dir,
+		  struct nubus_dirent *ent);
+int nubus_find_rsrc(struct nubus_dir *dir,
 		    unsigned char rsrc_type,
-		    struct nubus_dirent* ent);
-int nubus_rewinddir(struct nubus_dir* dir);
+		    struct nubus_dirent *ent);
+int nubus_rewinddir(struct nubus_dir *dir);
 
 /* Things to do with directory entries */
-int nubus_get_subdir(const struct nubus_dirent* ent,
-		     struct nubus_dir* dir);
-void nubus_get_rsrc_mem(void* dest,
-			const struct nubus_dirent *dirent,
-			int len);
-void nubus_get_rsrc_str(void* dest,
-			const struct nubus_dirent *dirent,
-			int maxlen);
+int nubus_get_subdir(const struct nubus_dirent *ent,
+		     struct nubus_dir *dir);
+void nubus_get_rsrc_mem(void *dest, const struct nubus_dirent *dirent,
+			unsigned int len);
+unsigned int nubus_get_rsrc_str(char *dest, const struct nubus_dirent *dirent,
+				unsigned int len);
+void nubus_seq_write_rsrc_mem(struct seq_file *m,
+			      const struct nubus_dirent *dirent,
+			      unsigned int len);
+unsigned char *nubus_dirptr(const struct nubus_dirent *nd);
+
+/* Declarations relating to driver model objects */
+int nubus_bus_register(void);
+int nubus_device_register(struct nubus_board *board);
+int nubus_driver_register(struct nubus_driver *ndrv);
+void nubus_driver_unregister(struct nubus_driver *ndrv);
+int nubus_proc_show(struct seq_file *m, void *data);
+
+static inline void nubus_set_drvdata(struct nubus_board *board, void *data)
+{
+	dev_set_drvdata(&board->dev, data);
+}
+
+static inline void *nubus_get_drvdata(struct nubus_board *board)
+{
+	return dev_get_drvdata(&board->dev);
+}
+
+/* Returns a pointer to the "standard" slot space. */
+static inline void *nubus_slot_addr(int slot)
+{
+	return (void *)(0xF0000000 | (slot << 24));
+}
+
 #endif /* LINUX_NUBUS_H */

include/uapi/linux/nubus.h

@@ -221,27 +221,4 @@ enum nubus_display_res_id {
 	NUBUS_RESID_SIXTHMODE   = 0x0085
 };
 
-struct nubus_dir
-{
-	unsigned char *base;
-	unsigned char *ptr;
-	int done;
-	int mask;
-};
-
-struct nubus_dirent
-{
-	unsigned char *base;
-	unsigned char type;
-	__u32 data;	/* Actually 24bits used */
-	int mask;
-};
-
-
-/* We'd like to get rid of this eventually.  Only daynaport.c uses it now. */
-static inline void *nubus_slot_addr(int slot)
-{
-	return (void *)(0xF0000000|(slot<<24));
-}
-
 #endif /* _UAPILINUX_NUBUS_H */