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Add some notes about the globalness of certain things like interrupts
and ISA DMA channels (ie: on most PCI systems, they are not.. they are on the ISA side of the PCI-ISA bridge and could be duplicated if there were multiple PCI-ISA bridges, say in a laptop docking station), while the APIC resources would be global on SMP systems. Also, revert a previous change, change some printfs back to panics.
This commit is contained in:
Peter Wemm
parent
208e16e3af
commit
0bbd01ea13
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=46737
@ -26,7 +26,7 @@
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: nexus.c,v 1.5 1999/04/24 04:16:22 kato Exp $
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* $Id: nexus.c,v 1.6 1999/05/08 20:24:44 peter Exp $
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*/
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/*
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@ -137,6 +137,13 @@ nexus_probe(device_t dev)
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device_quiet(dev); /* suppress attach message for neatness */
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/*
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* IRQ's are on the mainboard on old systems, but on the ISA part
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* of PCI->ISA bridges. There would be multiple sets of IRQs on
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* multi-ISA-bus systems. PCI interrupts are routed to the ISA
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* component, so in a way, PCI can be a partial child of an ISA bus(!).
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* APIC interrupts are global though.
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*/
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irq_rman.rm_start = 0;
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irq_rman.rm_end = LASTIRQ;
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irq_rman.rm_type = RMAN_ARRAY;
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@ -146,6 +153,11 @@ nexus_probe(device_t dev)
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|| rman_manage_region(&irq_rman, 3, LASTIRQ))
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panic("nexus_probe irq_rman");
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/*
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* ISA DMA on PCI systems is implemented in the ISA part of each
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* PCI->ISA bridge and the channels can be duplicated if there are
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* multiple bridges. (eg: laptops with docking stations)
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*/
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drq_rman.rm_start = 0;
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drq_rman.rm_end = 7;
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drq_rman.rm_type = RMAN_ARRAY;
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@ -155,6 +167,11 @@ nexus_probe(device_t dev)
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|| rman_manage_region(&drq_rman, 0, 7))
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panic("nexus_probe drq_rman");
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/*
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* However, IO ports and Memory truely are global at this level,
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* as are APIC interrupts (however many IO APICS there turn out
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* to be on large systems..)
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*/
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port_rman.rm_start = 0;
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port_rman.rm_end = 0xffff;
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port_rman.rm_type = RMAN_ARRAY;
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@ -173,24 +190,24 @@ nexus_probe(device_t dev)
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child = device_add_child(dev, "npx", 0, 0);
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if (child == 0)
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printf("nexus_probe npx\n");
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panic("nexus_probe npx");
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child = device_add_child(dev, "apm", 0, 0);
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if (child == 0)
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printf("nexus_probe apm\n");
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panic("nexus_probe apm");
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#if NPCI > 0
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/* pci_cfgopen() should come out of here so it could be loadable */
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if (pci_cfgopen() != 0) {
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child = device_add_child(dev, "pcib", 0, 0);
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if (child == 0)
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printf("nexus_probe pcib\n");
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panic("nexus_probe pcib");
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}
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#endif
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child = device_add_child(dev, "eisa", 0, 0);
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if (child == 0)
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printf("nexus_probe eisa\n");
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panic("nexus_probe eisa");
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child = device_add_child(dev, "isa", 0, 0);
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if (child == 0)
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@ -26,7 +26,7 @@
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: nexus.c,v 1.5 1999/04/24 04:16:22 kato Exp $
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* $Id: nexus.c,v 1.6 1999/05/08 20:24:44 peter Exp $
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*/
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/*
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@ -137,6 +137,13 @@ nexus_probe(device_t dev)
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device_quiet(dev); /* suppress attach message for neatness */
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/*
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* IRQ's are on the mainboard on old systems, but on the ISA part
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* of PCI->ISA bridges. There would be multiple sets of IRQs on
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* multi-ISA-bus systems. PCI interrupts are routed to the ISA
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* component, so in a way, PCI can be a partial child of an ISA bus(!).
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* APIC interrupts are global though.
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*/
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irq_rman.rm_start = 0;
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irq_rman.rm_end = LASTIRQ;
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irq_rman.rm_type = RMAN_ARRAY;
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@ -146,6 +153,11 @@ nexus_probe(device_t dev)
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|| rman_manage_region(&irq_rman, 3, LASTIRQ))
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panic("nexus_probe irq_rman");
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/*
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* ISA DMA on PCI systems is implemented in the ISA part of each
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* PCI->ISA bridge and the channels can be duplicated if there are
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* multiple bridges. (eg: laptops with docking stations)
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*/
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drq_rman.rm_start = 0;
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drq_rman.rm_end = 7;
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drq_rman.rm_type = RMAN_ARRAY;
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@ -155,6 +167,11 @@ nexus_probe(device_t dev)
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|| rman_manage_region(&drq_rman, 0, 7))
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panic("nexus_probe drq_rman");
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/*
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* However, IO ports and Memory truely are global at this level,
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* as are APIC interrupts (however many IO APICS there turn out
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* to be on large systems..)
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*/
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port_rman.rm_start = 0;
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port_rman.rm_end = 0xffff;
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port_rman.rm_type = RMAN_ARRAY;
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@ -173,24 +190,24 @@ nexus_probe(device_t dev)
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child = device_add_child(dev, "npx", 0, 0);
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if (child == 0)
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printf("nexus_probe npx\n");
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panic("nexus_probe npx");
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child = device_add_child(dev, "apm", 0, 0);
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if (child == 0)
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printf("nexus_probe apm\n");
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panic("nexus_probe apm");
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#if NPCI > 0
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/* pci_cfgopen() should come out of here so it could be loadable */
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if (pci_cfgopen() != 0) {
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child = device_add_child(dev, "pcib", 0, 0);
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if (child == 0)
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printf("nexus_probe pcib\n");
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panic("nexus_probe pcib");
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}
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#endif
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child = device_add_child(dev, "eisa", 0, 0);
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if (child == 0)
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printf("nexus_probe eisa\n");
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panic("nexus_probe eisa");
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child = device_add_child(dev, "isa", 0, 0);
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if (child == 0)
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@ -26,7 +26,7 @@
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: nexus.c,v 1.5 1999/04/24 04:16:22 kato Exp $
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* $Id: nexus.c,v 1.6 1999/05/08 20:24:44 peter Exp $
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*/
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/*
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@ -137,6 +137,13 @@ nexus_probe(device_t dev)
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device_quiet(dev); /* suppress attach message for neatness */
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/*
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* IRQ's are on the mainboard on old systems, but on the ISA part
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* of PCI->ISA bridges. There would be multiple sets of IRQs on
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* multi-ISA-bus systems. PCI interrupts are routed to the ISA
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* component, so in a way, PCI can be a partial child of an ISA bus(!).
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* APIC interrupts are global though.
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*/
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irq_rman.rm_start = 0;
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irq_rman.rm_end = LASTIRQ;
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irq_rman.rm_type = RMAN_ARRAY;
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@ -146,6 +153,11 @@ nexus_probe(device_t dev)
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|| rman_manage_region(&irq_rman, 3, LASTIRQ))
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panic("nexus_probe irq_rman");
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/*
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* ISA DMA on PCI systems is implemented in the ISA part of each
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* PCI->ISA bridge and the channels can be duplicated if there are
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* multiple bridges. (eg: laptops with docking stations)
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*/
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drq_rman.rm_start = 0;
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drq_rman.rm_end = 7;
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drq_rman.rm_type = RMAN_ARRAY;
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@ -155,6 +167,11 @@ nexus_probe(device_t dev)
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|| rman_manage_region(&drq_rman, 0, 7))
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panic("nexus_probe drq_rman");
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/*
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* However, IO ports and Memory truely are global at this level,
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* as are APIC interrupts (however many IO APICS there turn out
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* to be on large systems..)
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*/
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port_rman.rm_start = 0;
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port_rman.rm_end = 0xffff;
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port_rman.rm_type = RMAN_ARRAY;
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@ -173,24 +190,24 @@ nexus_probe(device_t dev)
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child = device_add_child(dev, "npx", 0, 0);
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if (child == 0)
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printf("nexus_probe npx\n");
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panic("nexus_probe npx");
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child = device_add_child(dev, "apm", 0, 0);
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if (child == 0)
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printf("nexus_probe apm\n");
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panic("nexus_probe apm");
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#if NPCI > 0
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/* pci_cfgopen() should come out of here so it could be loadable */
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if (pci_cfgopen() != 0) {
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child = device_add_child(dev, "pcib", 0, 0);
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if (child == 0)
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printf("nexus_probe pcib\n");
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panic("nexus_probe pcib");
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}
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#endif
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child = device_add_child(dev, "eisa", 0, 0);
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if (child == 0)
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printf("nexus_probe eisa\n");
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panic("nexus_probe eisa");
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child = device_add_child(dev, "isa", 0, 0);
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if (child == 0)
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@ -26,7 +26,7 @@
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: nexus.c,v 1.5 1999/04/24 04:16:22 kato Exp $
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* $Id: nexus.c,v 1.6 1999/05/08 20:24:44 peter Exp $
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*/
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/*
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@ -137,6 +137,13 @@ nexus_probe(device_t dev)
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device_quiet(dev); /* suppress attach message for neatness */
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/*
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* IRQ's are on the mainboard on old systems, but on the ISA part
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* of PCI->ISA bridges. There would be multiple sets of IRQs on
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* multi-ISA-bus systems. PCI interrupts are routed to the ISA
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* component, so in a way, PCI can be a partial child of an ISA bus(!).
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* APIC interrupts are global though.
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*/
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irq_rman.rm_start = 0;
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irq_rman.rm_end = LASTIRQ;
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irq_rman.rm_type = RMAN_ARRAY;
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@ -146,6 +153,11 @@ nexus_probe(device_t dev)
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|| rman_manage_region(&irq_rman, 3, LASTIRQ))
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panic("nexus_probe irq_rman");
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/*
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* ISA DMA on PCI systems is implemented in the ISA part of each
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* PCI->ISA bridge and the channels can be duplicated if there are
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* multiple bridges. (eg: laptops with docking stations)
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*/
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drq_rman.rm_start = 0;
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drq_rman.rm_end = 7;
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drq_rman.rm_type = RMAN_ARRAY;
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@ -155,6 +167,11 @@ nexus_probe(device_t dev)
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|| rman_manage_region(&drq_rman, 0, 7))
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panic("nexus_probe drq_rman");
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/*
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* However, IO ports and Memory truely are global at this level,
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* as are APIC interrupts (however many IO APICS there turn out
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* to be on large systems..)
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*/
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port_rman.rm_start = 0;
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port_rman.rm_end = 0xffff;
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port_rman.rm_type = RMAN_ARRAY;
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@ -173,24 +190,24 @@ nexus_probe(device_t dev)
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child = device_add_child(dev, "npx", 0, 0);
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if (child == 0)
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printf("nexus_probe npx\n");
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panic("nexus_probe npx");
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child = device_add_child(dev, "apm", 0, 0);
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if (child == 0)
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printf("nexus_probe apm\n");
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panic("nexus_probe apm");
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#if NPCI > 0
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/* pci_cfgopen() should come out of here so it could be loadable */
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if (pci_cfgopen() != 0) {
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child = device_add_child(dev, "pcib", 0, 0);
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if (child == 0)
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printf("nexus_probe pcib\n");
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panic("nexus_probe pcib");
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}
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#endif
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child = device_add_child(dev, "eisa", 0, 0);
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if (child == 0)
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printf("nexus_probe eisa\n");
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panic("nexus_probe eisa");
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child = device_add_child(dev, "isa", 0, 0);
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if (child == 0)
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