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Add heuristic to detect multi-function devices that don't announce this
feature in the header type register, though it is required by the PCI spec. This should correctly probe both functions of the Intel 82371FB chip, without the need for a special case based on the device ID.
This commit is contained in:
Stefan Eßer
parent
e71057d8d0
commit
dcf289cdb5
2 changed files with 158 additions and 68 deletions
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@ -1,6 +1,6 @@
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/**************************************************************************
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**
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** $Id: pci.c,v 1.42 1996/01/25 18:31:58 se Exp $
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** $Id: pci.c,v 1.43 1996/01/27 20:14:31 wollman Exp $
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**
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** General subroutines for the PCI bus.
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** pci_configure ()
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@ -122,9 +122,12 @@ not_supported (pcici_t tag, u_long type);
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static void
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pci_bus_config (void);
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static void
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static int
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pci_bridge_config (void);
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static int
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pci_mfdev (int bus, int device);
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/*========================================================
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**
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** Variables
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@ -344,28 +347,69 @@ done:
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**========================================================
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*/
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static int
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pci_mfdev (int bus, int device)
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{
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pcici_t tag0,tag1;
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int pci_id0, pci_id1;
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/*
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** Detect a multi-function device that complies to the PCI 2.0 spec
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*/
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tag0 = pcibus->pb_tag (bus, device, 0);
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if (pcibus->pb_read (tag0, PCI_HEADER_MISC) & PCI_HEADER_MULTIFUNCTION)
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return 1;
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/*
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** Well, as always: Theory and implementation of PCI ...
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**
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** If there is a valid device ID returned for function 1 AND
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** the device ID of function 0 and 1 is different OR
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** the first mapping register of 0 and 1 differs,
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** then assume a multi-function device anyway ...
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**
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** Example of such a broken device: ISA and IDE chip i83371FB (Triton)
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*/
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tag1 = pcibus->pb_tag (bus, device, 1);
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pci_id1 = pcibus->pb_read (tag1, PCI_ID_REG);
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if (pci_id1 != 0xffffffff) {
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pci_id0 = pcibus->pb_read (tag0, PCI_ID_REG);
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if (pci_id0 != pci_id1)
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return 1;
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if (pcibus->pb_read (tag0, PCI_MAP_REG_START)
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!= pcibus->pb_read (tag1, PCI_MAP_REG_START))
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return 1;
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}
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return 0;
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}
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static void
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pci_bus_config (void)
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{
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int bus_no;
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u_char device;
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u_char reg;
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pcici_t tag, mtag;
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pcidi_t type;
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u_long data;
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int unit;
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int pciint;
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int irq;
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u_char pciint;
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u_char irq;
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struct pci_device *dvp;
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struct pci_device *dvp;
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struct pci_devconf *pdcp;
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struct pci_devconf *pdcp;
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/*
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** first initialize the bridge (bus controller chip)
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*/
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pci_bridge_config ();
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bus_no = pci_bridge_config ();
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printf ("Probing for devices on PCI bus %d:\n", pcicb->pcicb_bus);
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printf ("Probing for devices on PCI bus %d:\n", bus_no);
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#ifndef PCI_QUIET
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if (bootverbose && !pci_info_done) {
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pci_info_done=1;
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@ -382,7 +426,7 @@ pci_bus_config (void)
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continue;
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for (func=0; func <= maxfunc; func++) {
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tag = pcibus->pb_tag (pcicb->pcicb_bus, device, func);
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tag = pcibus->pb_tag (bus_no, device, func);
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type = pcibus->pb_read (tag, PCI_ID_REG);
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if ((!type) || (type==0xfffffffful)) continue;
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@ -406,10 +450,10 @@ pci_bus_config (void)
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goto real_device;
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}
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if (device & 0x10) {
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mtag=pcibus->pb_tag (pcicb->pcicb_bus,
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mtag=pcibus->pb_tag (bus_no,
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(u_char)(device & ~0x10), 0);
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} else if (device & 0x08) {
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mtag=pcibus->pb_tag (pcicb->pcicb_bus,
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mtag=pcibus->pb_tag (bus_no,
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(u_char)(device & ~0x08), 0);
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} else goto real_device;
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@ -424,21 +468,21 @@ pci_bus_config (void)
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if (dvp==NULL) continue;
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if (bootverbose)
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printf ("%s? <%s> mirrored on pci%d:%d\n",
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dvp->pd_name, name, pcicb->pcicb_bus, device);
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dvp->pd_name, name, bus_no, device);
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#endif
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continue;
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real_device:
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/*
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* Ack. The Triton PIIX doesn't correctly set
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* the multifunction bit. Fake it.
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*/
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if (type == 0x122e8086) {
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maxfunc = 1;
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if (bootverbose) {
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printf ("\tconfig header: 0x%08x 0x%08x 0x%08x 0x%08x\n",
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pci_conf_read (tag, 0),
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pci_conf_read (tag, 4),
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pci_conf_read (tag, 8),
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pci_conf_read (tag, 12));
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}
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if (func == 0 && (pcibus->pb_read (tag, PCI_HEADER_MISC)
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& PCI_HEADER_MULTIFUNCTION)) {
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if (func == 0 && pci_mfdev (bus_no, device)) {
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maxfunc = 7;
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}
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@ -446,8 +490,7 @@ pci_bus_config (void)
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#ifndef PCI_QUIET
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if (pci_conf_count)
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continue;
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printf("%s%d:%d: ", pcibus->pb_name,
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pcicb->pcicb_bus, device);
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printf("%s%d:%d: ", pcibus->pb_name, bus_no, device);
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not_supported (tag, type);
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#endif
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continue;
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@ -493,13 +536,13 @@ pci_bus_config (void)
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** and we cannot bind the pci interrupt.
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*/
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if (irq)
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if (irq && (irq != 0xff))
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printf ("%d", irq);
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else
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printf ("??");
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};
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printf (" on pci%d:%d\n", pcicb->pcicb_bus, device);
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printf (" on pci%d:%d\n", bus_no, device);
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/*
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** Read the current mapping,
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@ -566,7 +609,7 @@ pci_bus_config (void)
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malloc (sizeof (struct pci_devconf),M_DEVBUF,M_WAITOK);
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bzero(pdcp, sizeof(struct pci_devconf));
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pdcp -> pdc_pi.pi_bus = pcicb->pcicb_bus;
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pdcp -> pdc_pi.pi_bus = bus_no;
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pdcp -> pdc_pi.pi_device = device;
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pdcp -> pdc_pi.pi_func = func;
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@ -632,7 +675,7 @@ pci_bus_config (void)
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** check for uninitialized bridge.
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*/
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if (secondary == 0 || secondary < primary ||
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pcicb->pcicb_bus != primary)
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bus_no != primary)
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{
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printf ("\tINCORRECTLY or NEVER CONFIGURED.\n");
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/*
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@ -776,17 +819,17 @@ pci_bus_config (void)
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if (bootverbose) {
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if (pcicb->pcicb_mamount)
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printf ("%s%d: uses %d bytes of memory from %x upto %x.\n",
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pcibus->pb_name, pcicb->pcicb_bus,
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pcibus->pb_name, bus_no,
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pcicb->pcicb_mamount,
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pcicb->pcicb_mfrom, pcicb->pcicb_mupto);
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if (pcicb->pcicb_pamount)
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printf ("%s%d: uses %d bytes of I/O space from %x upto %x.\n",
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pcibus->pb_name, pcicb->pcicb_bus,
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pcibus->pb_name, bus_no,
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pcicb->pcicb_pamount,
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pcicb->pcicb_pfrom, pcicb->pcicb_pupto);
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if (pcicb->pcicb_bfrom)
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printf ("%s%d: subordinate busses from %x upto %x.\n",
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pcibus->pb_name, pcicb->pcicb_bus,
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pcibus->pb_name, bus_no,
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pcicb->pcicb_bfrom, pcicb->pcicb_bupto);
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}
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#endif
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@ -801,16 +844,16 @@ pci_bus_config (void)
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**========================================================
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*/
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static void
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static int
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pci_bridge_config (void)
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{
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pcici_t tag;
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struct pcicb* parent;
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tag = pcicb->pcicb_bridge;
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if (!tag.tag) return;
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if (tag.tag) {
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if (!pcicb->pcicb_bus) {
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if (!pcicb->pcicb_bus) {
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u_int data;
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/*
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** Get the lowest available bus number.
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@ -844,14 +887,16 @@ pci_bridge_config (void)
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pci_conf_write (parent->pcicb_bridge,
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PCI_PCI_BRIDGE_BUS_REG, data);
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}
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}
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}
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if (!pcicb->pcicb_membase) {
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if (!pcicb->pcicb_membase) {
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u_int size = 0x100000;
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pcicb->pcicb_membase = pci_memalloc (pcicb->pcicb_up, 0, size);
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if (pcicb->pcicb_membase)
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pcicb->pcicb_memlimit = pcicb->pcicb_membase+size-1;
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}
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}
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return pcicb->pcicb_bus;
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}
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/*-----------------------------------------------------------------
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113
sys/pci/pci.c
113
sys/pci/pci.c
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@ -1,6 +1,6 @@
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/**************************************************************************
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**
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** $Id: pci.c,v 1.42 1996/01/25 18:31:58 se Exp $
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** $Id: pci.c,v 1.43 1996/01/27 20:14:31 wollman Exp $
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**
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** General subroutines for the PCI bus.
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** pci_configure ()
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@ -122,9 +122,12 @@ not_supported (pcici_t tag, u_long type);
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static void
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pci_bus_config (void);
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static void
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static int
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pci_bridge_config (void);
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static int
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pci_mfdev (int bus, int device);
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/*========================================================
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**
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** Variables
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@ -344,28 +347,69 @@ done:
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**========================================================
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*/
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static int
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pci_mfdev (int bus, int device)
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{
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pcici_t tag0,tag1;
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int pci_id0, pci_id1;
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/*
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** Detect a multi-function device that complies to the PCI 2.0 spec
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*/
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tag0 = pcibus->pb_tag (bus, device, 0);
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if (pcibus->pb_read (tag0, PCI_HEADER_MISC) & PCI_HEADER_MULTIFUNCTION)
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return 1;
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/*
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** Well, as always: Theory and implementation of PCI ...
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**
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** If there is a valid device ID returned for function 1 AND
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** the device ID of function 0 and 1 is different OR
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** the first mapping register of 0 and 1 differs,
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** then assume a multi-function device anyway ...
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**
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** Example of such a broken device: ISA and IDE chip i83371FB (Triton)
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*/
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tag1 = pcibus->pb_tag (bus, device, 1);
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pci_id1 = pcibus->pb_read (tag1, PCI_ID_REG);
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if (pci_id1 != 0xffffffff) {
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pci_id0 = pcibus->pb_read (tag0, PCI_ID_REG);
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if (pci_id0 != pci_id1)
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return 1;
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if (pcibus->pb_read (tag0, PCI_MAP_REG_START)
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!= pcibus->pb_read (tag1, PCI_MAP_REG_START))
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return 1;
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}
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return 0;
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}
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static void
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pci_bus_config (void)
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{
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int bus_no;
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u_char device;
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u_char reg;
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pcici_t tag, mtag;
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pcidi_t type;
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u_long data;
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int unit;
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int pciint;
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int irq;
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u_char pciint;
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u_char irq;
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struct pci_device *dvp;
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struct pci_device *dvp;
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struct pci_devconf *pdcp;
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struct pci_devconf *pdcp;
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/*
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** first initialize the bridge (bus controller chip)
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*/
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pci_bridge_config ();
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bus_no = pci_bridge_config ();
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printf ("Probing for devices on PCI bus %d:\n", pcicb->pcicb_bus);
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printf ("Probing for devices on PCI bus %d:\n", bus_no);
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#ifndef PCI_QUIET
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if (bootverbose && !pci_info_done) {
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pci_info_done=1;
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@ -382,7 +426,7 @@ pci_bus_config (void)
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continue;
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for (func=0; func <= maxfunc; func++) {
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tag = pcibus->pb_tag (pcicb->pcicb_bus, device, func);
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tag = pcibus->pb_tag (bus_no, device, func);
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type = pcibus->pb_read (tag, PCI_ID_REG);
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if ((!type) || (type==0xfffffffful)) continue;
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@ -406,10 +450,10 @@ pci_bus_config (void)
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goto real_device;
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}
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if (device & 0x10) {
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mtag=pcibus->pb_tag (pcicb->pcicb_bus,
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mtag=pcibus->pb_tag (bus_no,
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(u_char)(device & ~0x10), 0);
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} else if (device & 0x08) {
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mtag=pcibus->pb_tag (pcicb->pcicb_bus,
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mtag=pcibus->pb_tag (bus_no,
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(u_char)(device & ~0x08), 0);
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} else goto real_device;
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@ -424,21 +468,21 @@ pci_bus_config (void)
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if (dvp==NULL) continue;
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if (bootverbose)
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printf ("%s? <%s> mirrored on pci%d:%d\n",
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dvp->pd_name, name, pcicb->pcicb_bus, device);
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dvp->pd_name, name, bus_no, device);
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#endif
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continue;
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real_device:
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/*
|
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* Ack. The Triton PIIX doesn't correctly set
|
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* the multifunction bit. Fake it.
|
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*/
|
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if (type == 0x122e8086) {
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maxfunc = 1;
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if (bootverbose) {
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printf ("\tconfig header: 0x%08x 0x%08x 0x%08x 0x%08x\n",
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pci_conf_read (tag, 0),
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pci_conf_read (tag, 4),
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pci_conf_read (tag, 8),
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pci_conf_read (tag, 12));
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}
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if (func == 0 && (pcibus->pb_read (tag, PCI_HEADER_MISC)
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& PCI_HEADER_MULTIFUNCTION)) {
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if (func == 0 && pci_mfdev (bus_no, device)) {
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maxfunc = 7;
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}
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@ -446,8 +490,7 @@ pci_bus_config (void)
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#ifndef PCI_QUIET
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if (pci_conf_count)
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continue;
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printf("%s%d:%d: ", pcibus->pb_name,
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pcicb->pcicb_bus, device);
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printf("%s%d:%d: ", pcibus->pb_name, bus_no, device);
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not_supported (tag, type);
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#endif
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continue;
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|
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@ -493,13 +536,13 @@ pci_bus_config (void)
|
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** and we cannot bind the pci interrupt.
|
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*/
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|
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if (irq)
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if (irq && (irq != 0xff))
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printf ("%d", irq);
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else
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printf ("??");
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};
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printf (" on pci%d:%d\n", pcicb->pcicb_bus, device);
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printf (" on pci%d:%d\n", bus_no, device);
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/*
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** Read the current mapping,
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|
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@ -566,7 +609,7 @@ pci_bus_config (void)
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malloc (sizeof (struct pci_devconf),M_DEVBUF,M_WAITOK);
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bzero(pdcp, sizeof(struct pci_devconf));
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pdcp -> pdc_pi.pi_bus = pcicb->pcicb_bus;
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pdcp -> pdc_pi.pi_bus = bus_no;
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pdcp -> pdc_pi.pi_device = device;
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pdcp -> pdc_pi.pi_func = func;
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@ -632,7 +675,7 @@ pci_bus_config (void)
|
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** check for uninitialized bridge.
|
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*/
|
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if (secondary == 0 || secondary < primary ||
|
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pcicb->pcicb_bus != primary)
|
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bus_no != primary)
|
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{
|
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printf ("\tINCORRECTLY or NEVER CONFIGURED.\n");
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/*
|
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|
|
@ -776,17 +819,17 @@ pci_bus_config (void)
|
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if (bootverbose) {
|
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if (pcicb->pcicb_mamount)
|
||||
printf ("%s%d: uses %d bytes of memory from %x upto %x.\n",
|
||||
pcibus->pb_name, pcicb->pcicb_bus,
|
||||
pcibus->pb_name, bus_no,
|
||||
pcicb->pcicb_mamount,
|
||||
pcicb->pcicb_mfrom, pcicb->pcicb_mupto);
|
||||
if (pcicb->pcicb_pamount)
|
||||
printf ("%s%d: uses %d bytes of I/O space from %x upto %x.\n",
|
||||
pcibus->pb_name, pcicb->pcicb_bus,
|
||||
pcibus->pb_name, bus_no,
|
||||
pcicb->pcicb_pamount,
|
||||
pcicb->pcicb_pfrom, pcicb->pcicb_pupto);
|
||||
if (pcicb->pcicb_bfrom)
|
||||
printf ("%s%d: subordinate busses from %x upto %x.\n",
|
||||
pcibus->pb_name, pcicb->pcicb_bus,
|
||||
pcibus->pb_name, bus_no,
|
||||
pcicb->pcicb_bfrom, pcicb->pcicb_bupto);
|
||||
}
|
||||
#endif
|
||||
|
|
@ -801,16 +844,16 @@ pci_bus_config (void)
|
|||
**========================================================
|
||||
*/
|
||||
|
||||
static void
|
||||
static int
|
||||
pci_bridge_config (void)
|
||||
{
|
||||
pcici_t tag;
|
||||
struct pcicb* parent;
|
||||
|
||||
tag = pcicb->pcicb_bridge;
|
||||
if (!tag.tag) return;
|
||||
if (tag.tag) {
|
||||
|
||||
if (!pcicb->pcicb_bus) {
|
||||
if (!pcicb->pcicb_bus) {
|
||||
u_int data;
|
||||
/*
|
||||
** Get the lowest available bus number.
|
||||
|
|
@ -844,14 +887,16 @@ pci_bridge_config (void)
|
|||
pci_conf_write (parent->pcicb_bridge,
|
||||
PCI_PCI_BRIDGE_BUS_REG, data);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!pcicb->pcicb_membase) {
|
||||
if (!pcicb->pcicb_membase) {
|
||||
u_int size = 0x100000;
|
||||
pcicb->pcicb_membase = pci_memalloc (pcicb->pcicb_up, 0, size);
|
||||
if (pcicb->pcicb_membase)
|
||||
pcicb->pcicb_memlimit = pcicb->pcicb_membase+size-1;
|
||||
}
|
||||
}
|
||||
return pcicb->pcicb_bus;
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------------
|
||||
|
|
|
|||
Loading…
Reference in a new issue