Add device description fields to struct device.

src/arch/i386/core/pcibios.c

@@ -72,7 +72,7 @@ int pcibios_read ( struct pci_device *pci, uint32_t command, uint32_t *value ){
 			       : "=a" ( status ), "=b" ( discard_b ),
 				 "=c" ( *value ), "=D" ( discard_D )
 			       : "a" ( command >> 16 ), "D" ( command ),
-				 "b" ( ( pci->bus << 8 ) | pci->devfn )
+			         "b" ( PCI_BUSDEVFN ( pci->bus, pci->devfn ) )
 			       : "edx" );
 
 	return ( ( status >> 8 ) & 0xff );
@@ -98,7 +98,7 @@ int pcibios_write ( struct pci_device *pci, uint32_t command, uint32_t value ){
 			       : "=a" ( status ), "=b" ( discard_b ),
 				 "=c" ( discard_c ), "=D" ( discard_D )
 			       : "a" ( command >> 16 ),	"D" ( command ),
-				 "b" ( ( pci->bus << 8 ) | pci->devfn ),
+			         "b" ( PCI_BUSDEVFN ( pci->bus, pci->devfn ) ),
 				 "c" ( value )
 			       : "edx" );
 	

src/arch/i386/drivers/net/undi.c

@@ -64,7 +64,7 @@ static int undipci_probe ( struct pci_device *pci,
 			   const struct pci_device_id *id __unused ) {
 	struct undi_device *undi;
 	struct undi_rom *undirom;
-	unsigned int busdevfn = ( ( pci->bus << 8 ) | pci->devfn );
+	unsigned int busdevfn = PCI_BUSDEVFN ( pci->bus, pci->devfn );
 	int rc;
 
 	/* Ignore non-network devices */
@@ -99,6 +99,7 @@ static int undipci_probe ( struct pci_device *pci,
 	/* Add to device hierarchy */
 	snprintf ( undi->dev.name, sizeof ( undi->dev.name ),
 		   "UNDI-%s", pci->dev.name );
+	memcpy ( &undi->dev.desc, &pci->dev.desc, sizeof ( undi->dev.desc ) );
 	undi->dev.parent = &pci->dev;
 	INIT_LIST_HEAD ( &undi->dev.children );
 	list_add ( &undi->dev.siblings, &pci->dev.children );

src/arch/i386/drivers/net/undiload.c

@@ -76,13 +76,13 @@ int undi_load ( struct undi_device *undi, struct undi_rom *undirom ) {
 	/* Debug info */
 	DBGC ( undi, "UNDI %p loading UNDI ROM %p to CS %04x DS %04x for ",
 	       undi, undirom, undi_loader.UNDI_CS, undi_loader.UNDI_DS );
-	if ( undi->pci_busdevfn != 0xffff ) {
+	if ( undi->pci_busdevfn != UNDI_NO_PCI_BUSDEVFN ) {
 		unsigned int bus = ( undi->pci_busdevfn >> 8 );
 		unsigned int devfn = ( undi->pci_busdevfn & 0xff );
 		DBGC ( undi, "PCI %02x:%02x.%x\n",
 		       bus, PCI_SLOT ( devfn ), PCI_FUNC ( devfn ) );
 	}
-	if ( undi->isapnp_csn != 0xffff ) {
+	if ( undi->isapnp_csn != UNDI_NO_ISAPNP_CSN ) {
 		DBGC ( undi, "ISAPnP(%04x) CSN %04x\n",
 		       undi->isapnp_read_port, undi->isapnp_csn );
 	}

src/arch/i386/drivers/net/undionly.c

@@ -49,29 +49,41 @@
  * find.
  */
 static int undibus_probe ( struct root_device *rootdev ) {
+	struct undi_device *undi = &preloaded_undi;
 	int rc;
 
 	/* Check for a valie preloaded UNDI device */
-	if ( ! preloaded_undi.entry.segment ) {
+	if ( ! undi->entry.segment ) {
 		DBG ( "No preloaded UNDI device found!\n" );
 		return -ENODEV;
 	}
 
 	/* Add to device hierarchy */
-	strncpy ( preloaded_undi.dev.name, "UNDI",
-		  ( sizeof ( preloaded_undi.dev.name ) - 1 ) );
-	preloaded_undi.dev.parent = &rootdev->dev;
-	list_add ( &preloaded_undi.dev.siblings, &rootdev->dev.children);
-	INIT_LIST_HEAD ( &preloaded_undi.dev.children );
+	strncpy ( undi->dev.name, "UNDI",
+		  ( sizeof ( undi->dev.name ) - 1 ) );
+	if ( undi->pci_busdevfn != UNDI_NO_PCI_BUSDEVFN ) {
+		struct pci_device_description *pcidesc = &undi->dev.desc.pci;
+		pcidesc->bus_type = BUS_TYPE_PCI;
+		pcidesc->busdevfn = undi->pci_busdevfn;
+		pcidesc->vendor = undi->pci_vendor;
+		pcidesc->device = undi->pci_device;
+	} else if ( undi->isapnp_csn != UNDI_NO_ISAPNP_CSN ) {
+		struct isapnp_device_description *isapnpdesc
+			= &undi->dev.desc.isapnp;
+		isapnpdesc->bus_type = BUS_TYPE_ISAPNP;
+	}
+	undi->dev.parent = &rootdev->dev;
+	list_add ( &undi->dev.siblings, &rootdev->dev.children);
+	INIT_LIST_HEAD ( &undi->dev.children );
 
 	/* Create network device */
-	if ( ( rc = undinet_probe ( &preloaded_undi ) ) != 0 )
+	if ( ( rc = undinet_probe ( undi ) ) != 0 )
 		goto err;
 
 	return 0;
 
  err:
-	list_del ( &preloaded_undi.dev.siblings );
+	list_del ( &undi->dev.siblings );
 	return rc;
 }
 
@@ -81,8 +93,10 @@ static int undibus_probe ( struct root_device *rootdev ) {
  * @v rootdev		UNDI bus root device
  */
 static void undibus_remove ( struct root_device *rootdev __unused ) {
-	undinet_remove ( &preloaded_undi );
-	list_del ( &preloaded_undi.dev.siblings );
+	struct undi_device *undi = &preloaded_undi;
+
+	undinet_remove ( undi );
+	list_del ( &undi->dev.siblings );
 }
 
 /** UNDI bus root device driver */

src/arch/i386/include/undi.h

@@ -26,12 +26,22 @@ struct undi_device {
 	UINT16_t fbms;
 	/** Free base memory prior to load */
 	UINT16_t restore_fbms;
-	/** PCI bus:dev.fn, or 0xffff */
+	/** PCI bus:dev.fn, or @c UNDI_NO_PCI_BUSDEVFN */
 	UINT16_t pci_busdevfn;
-	/** ISAPnP card select number, or 0xffff */
+	/** ISAPnP card select number, or @c UNDI_NO_ISAPNP_CSN */
 	UINT16_t isapnp_csn;
-	/** ISAPnP read port, or 0xffff */
+	/** ISAPnP read port, or @c UNDI_NO_ISAPNP_READ_PORT */
 	UINT16_t isapnp_read_port;
+	/** PCI vendor ID
+	 *
+	 * Filled in only for the preloaded UNDI device by pxeprefix.S
+	 */
+	UINT16_t pci_vendor;
+	/** PCI device ID 
+	 *
+	 * Filled in only for the preloaded UNDI device by pxeprefix.S
+	 */
+	UINT16_t pci_device;
 	/** Padding */
 	UINT16_t pad;
 
@@ -45,6 +55,15 @@ struct undi_device {
 	void *priv;
 } __attribute__ (( packed ));
 
+/** PCI bus:dev.fn field is invalid */
+#define UNDI_NO_PCI_BUSDEVFN 0xffff
+
+/** ISAPnP card select number field is invalid */
+#define UNDI_NO_ISAPNP_CSN 0xffff
+
+/** ISAPnP read port field is invalid */
+#define UNDI_NO_ISAPNP_READ_PORT 0xffff
+
 /**
  * Set UNDI driver-private data
  *

src/arch/i386/include/undiload.h

@@ -25,8 +25,8 @@ static inline int undi_load_pci ( struct undi_device *undi,
 				  struct undi_rom *undirom,
 				  unsigned int pci_busdevfn ) {
 	undi->pci_busdevfn = pci_busdevfn;
-	undi->isapnp_csn = 0xffff;
-	undi->isapnp_read_port = 0xffff;
+	undi->isapnp_csn = UNDI_NO_ISAPNP_CSN;
+	undi->isapnp_read_port = UNDI_NO_ISAPNP_READ_PORT;
 	return undi_load ( undi, undirom );
 }
 

src/arch/i386/prefix/pxeprefix.S

@@ -220,7 +220,9 @@ get_physical_device:
 	jmp	no_physical_device
 
 pci_physical_device:
-	/* Record PCI bus:dev.fn */
+	/* Record PCI bus:dev.fn and vendor/device IDs */
+	movl	( pxe_parameter_structure + 0x03 ), %eax
+	movl	%eax, pci_vendor
 	movw	( pxe_parameter_structure + 0x0b ), %ax
 	movw	%ax, pci_busdevfn
 	movw	$10f, %si
@@ -680,6 +682,9 @@ pci_busdevfn:		.word 0xffff
 isapnp_csn:		.word 0xffff
 isapnp_read_port:	.word 0xffff
 
+pci_vendor:		.word 0
+pci_device:		.word 0
+
 	.equ undi_device_size, ( . - undi_device )
 
 /*****************************************************************************

src/drivers/bus/pci.c

@@ -282,6 +282,10 @@ static int pcibus_probe ( struct root_device *rootdev ) {
 			snprintf ( pci->dev.name, sizeof ( pci->dev.name ),
 				   "PCI%02x:%02x.%x", bus,
 				   PCI_SLOT ( devfn ), PCI_FUNC ( devfn ) );
+			pci->dev.desc.bus_type = BUS_TYPE_PCI;
+			pci->dev.desc.pci.busdevfn = PCI_BUSDEVFN (bus, devfn);
+			pci->dev.desc.pci.vendor = pci->vendor;
+			pci->dev.desc.pci.device = pci->device;
 			pci->dev.parent = &rootdev->dev;
 			list_add ( &pci->dev.siblings, &rootdev->dev.children);
 			INIT_LIST_HEAD ( &pci->dev.children );

src/include/gpxe/device.h

@@ -11,10 +11,58 @@
 #include <gpxe/list.h>
 #include <gpxe/tables.h>
 
+/** A PCI device description */
+struct pci_device_description {
+	/** Bus type
+	 *
+	 * Must be @c BUS_TYPE_PCI.
+	 */
+	unsigned int bus_type;
+	/** Bus:dev.fn address
+	 *
+	 * As constructed by PCI_BUSDEVFN().
+	 */
+	unsigned int busdevfn;
+	/** Vendor ID */
+	unsigned int vendor;
+	/** Device ID */
+	unsigned int device;
+};
+
+/** PCI bus type */
+#define BUS_TYPE_PCI 1
+
+/** An ISAPnP device description */
+struct isapnp_device_description {
+	/** Bus type
+	 *
+	 * Must be @c BUS_TYPE_ISAPNP.
+	 */
+	unsigned int bus_type;
+};
+
+/** PCI bus type */
+#define BUS_TYPE_ISAPNP 2
+
+/** A hardware device description */
+union device_description {
+	/** Bus type
+	 *
+	 * This must be a BUS_TYPE_XXX constant.
+	 */
+	unsigned int bus_type;
+	/** PCI device description */
+	struct pci_device_description pci;
+	/** ISAPnP device description */
+	struct isapnp_device_description isapnp;
+};
+
 /** A hardware device */
 struct device {
 	/** Name */
 	char name[16];
+	/** Device description */
+	union device_description desc;
 	/** Devices on the same bus */
 	struct list_head siblings;
 	/** Devices attached to this device */

src/include/gpxe/pci.h

@@ -307,9 +307,10 @@ struct pci_driver {
 /** Declare a PCI driver */
 #define __pci_driver __table ( struct pci_driver, pci_drivers, 01 )
 
-#define PCI_DEVFN( slot, func )	( ( (slot) << 3 ) | (func) )
-#define PCI_SLOT( devfn )	( ( (devfn) >> 3 ) & 0x1f )
-#define PCI_FUNC( devfn )	( (devfn) & 0x07 )
+#define PCI_DEVFN( slot, func )		( ( (slot) << 3 ) | (func) )
+#define PCI_SLOT( devfn )		( ( (devfn) >> 3 ) & 0x1f )
+#define PCI_FUNC( devfn )		( (devfn) & 0x07 )
+#define PCI_BUSDEVFN( bus, devfn )	( ( (bus) << 8 ) | (devfn) )
 
 #define PCI_BASE_CLASS( class )	( (class) >> 16 )