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path: root/sys/arch/alpha/pci/lca_pci.c
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Diffstat (limited to 'sys/arch/alpha/pci/lca_pci.c')
-rw-r--r--sys/arch/alpha/pci/lca_pci.c251
1 files changed, 115 insertions, 136 deletions
diff --git a/sys/arch/alpha/pci/lca_pci.c b/sys/arch/alpha/pci/lca_pci.c
index 1b151dcefb9..8d11ddd5ff3 100644
--- a/sys/arch/alpha/pci/lca_pci.c
+++ b/sys/arch/alpha/pci/lca_pci.c
@@ -1,10 +1,10 @@
-/* $NetBSD: lca_pci.c,v 1.1 1995/11/23 02:37:42 cgd Exp $ */
+/* $NetBSD: lca_pci.c,v 1.3 1996/04/23 14:01:00 cgd Exp $ */
/*
- * Copyright (c) 1995 Carnegie-Mellon University.
+ * Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
- * Author: Jeffrey Hsu
+ * Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
@@ -38,62 +38,119 @@
#include <alpha/pci/lcareg.h>
#include <alpha/pci/lcavar.h>
-pci_confreg_t lca_conf_read __P((void *, pci_conftag_t, pci_confoffset_t));
-void lca_conf_write __P((void *, pci_conftag_t,
- pci_confoffset_t, pci_confreg_t));
-int lca_find_io __P((void *, pci_conftag_t,
- pci_confoffset_t, pci_iooffset_t *, pci_iosize_t *));
-int lca_find_mem __P((void *, pci_conftag_t,
- pci_confoffset_t, pci_moffset_t *, pci_msize_t *, int *));
-
-__const struct pci_conf_fns lca_conf_fns = {
- lca_conf_read,
- lca_conf_write,
- lca_find_io,
- lca_find_mem,
-};
-
-pci_confreg_t
-lca_conf_read(cpv, tag, offset)
+void lca_attach_hook __P((struct device *, struct device *,
+ struct pcibus_attach_args *));
+int lca_bus_maxdevs __P((void *, int));
+pcitag_t lca_make_tag __P((void *, int, int, int));
+void lca_decompose_tag __P((void *, pcitag_t, int *, int *,
+ int *));
+pcireg_t lca_conf_read __P((void *, pcitag_t, int));
+void lca_conf_write __P((void *, pcitag_t, int, pcireg_t));
+
+void
+lca_pci_init(pc, v)
+ pci_chipset_tag_t pc;
+ void *v;
+{
+
+ pc->pc_conf_v = v;
+ pc->pc_attach_hook = lca_attach_hook;
+ pc->pc_bus_maxdevs = lca_bus_maxdevs;
+ pc->pc_make_tag = lca_make_tag;
+ pc->pc_decompose_tag = lca_decompose_tag;
+ pc->pc_conf_read = lca_conf_read;
+ pc->pc_conf_write = lca_conf_write;
+}
+
+void
+lca_attach_hook(parent, self, pba)
+ struct device *parent, *self;
+ struct pcibus_attach_args *pba;
+{
+}
+
+int
+lca_bus_maxdevs(cpv, busno)
+ void *cpv;
+ int busno;
+{
+
+ if (busno == 0)
+ return 16;
+ else
+ return 32;
+}
+
+pcitag_t
+lca_make_tag(cpv, b, d, f)
void *cpv;
- pci_conftag_t tag;
- pci_confoffset_t offset;
+ int b, d, f;
{
- pci_confreg_t *datap, data;
- int s, secondary, ba;
- int32_t old_ioc_conf; /* XXX */
- u_int64_t dev_sel;
- dev_sel = 1 << PCI_TAG_DEVICE(tag) + 11;
+ return (b << 16) | (d << 11) | (f << 8);
+}
+
+void
+lca_decompose_tag(cpv, tag, bp, dp, fp)
+ void *cpv;
+ pcitag_t tag;
+ int *bp, *dp, *fp;
+{
+
+ if (bp != NULL)
+ *bp = (tag >> 16) & 0xff;
+ if (dp != NULL)
+ *dp = (tag >> 11) & 0x1f;
+ if (fp != NULL)
+ *fp = (tag >> 8) & 0x7;
+}
+
+pcireg_t
+lca_conf_read(cpv, tag, offset)
+ void *cpv;
+ pcitag_t tag;
+ int offset;
+{
+ struct lca_config *lcp = cpv;
+ pcireg_t *datap, data;
+ int s, secondary, device, ba;
- secondary = PCI_TAG_BUS(tag) != 0;
+ /* secondary if bus # != 0 */
+ pci_decompose_tag(&lcp->lc_pc, tag, &secondary, &device, 0);
if (secondary) {
s = splhigh();
- old_ioc_conf = REGVAL(LCA_IOC_CONF);
wbflush();
- REGVAL(LCA_IOC_CONF) = old_ioc_conf | 0x1;
+ REGVAL(LCA_IOC_CONF) = 0x01;
wbflush();
+ } else {
+ /*
+ * on the LCA, must frob the tag used for
+ * devices on the primary bus, in the same ways
+ * as is used by type 1 configuration cycles
+ * on PCs.
+ */
+ tag = (1 << (device + 11)) | (tag & 0x7ff);
}
- datap = (pci_confreg_t *)phystok0seg(LCA_PCI_CONF |
- dev_sel << 5UL | /* XXX */
+ datap = (pcireg_t *)phystok0seg(LCA_PCI_CONF |
+ tag << 5UL | /* XXX */
(offset & ~0x03) << 5 | /* XXX */
0 << 5 | /* XXX */
0x3 << 3); /* XXX */
- data = (pci_confreg_t)-1;
+ data = (pcireg_t)-1;
if (!(ba = badaddr(datap, sizeof *datap)))
data = *datap;
if (secondary) {
wbflush();
- REGVAL(LCA_IOC_CONF) = old_ioc_conf;
+ REGVAL(LCA_IOC_CONF) = 0x00;
wbflush();
splx(s);
}
#if 0
- printf("lca_conf_read: tag 0x%x, offset 0x%x -> %x @ %p%s\n", tag,
- offset, data, datap, ba ? " (badaddr)" : "");
+ printf("lca_conf_read: tag 0x%lx, reg 0x%lx -> %x @ %p%s\n", tag, reg,
+ data, datap, ba ? " (badaddr)" : "");
#endif
return data;
@@ -102,28 +159,33 @@ lca_conf_read(cpv, tag, offset)
void
lca_conf_write(cpv, tag, offset, data)
void *cpv;
- pci_conftag_t tag;
- pci_confoffset_t offset;
- pci_confreg_t data;
+ pcitag_t tag;
+ int offset;
+ pcireg_t data;
{
- pci_confreg_t *datap;
- int s, secondary;
- int32_t old_ioc_conf; /* XXX */
- int32_t dev_sel;
-
- dev_sel = 1 << PCI_TAG_DEVICE(tag) + 11;
+ struct lca_config *lcp = cpv;
+ pcireg_t *datap;
+ int s, secondary, device;
- secondary = PCI_TAG_BUS(tag) != 0;
+ /* secondary if bus # != 0 */
+ pci_decompose_tag(&lcp->lc_pc, tag, &secondary, &device, 0);
if (secondary) {
s = splhigh();
- old_ioc_conf = REGVAL(LCA_IOC_CONF);
wbflush();
- REGVAL(LCA_IOC_CONF) = old_ioc_conf | 0x1;
+ REGVAL(LCA_IOC_CONF) = 0x01;
wbflush();
+ } else {
+ /*
+ * on the LCA, must frob the tag used for
+ * devices on the primary bus, in the same ways
+ * as is used by type 1 configuration cycles
+ * on PCs.
+ */
+ tag = (1 << (device + 11)) | (tag & 0x7ff);
}
- datap = (pci_confreg_t *)phystok0seg(LCA_PCI_CONF |
- dev_sel << 5UL | /* XXX */
+ datap = (pcireg_t *)phystok0seg(LCA_PCI_CONF |
+ tag << 5UL | /* XXX */
(offset & ~0x03) << 5 | /* XXX */
0 << 5 | /* XXX */
0x3 << 3); /* XXX */
@@ -131,96 +193,13 @@ lca_conf_write(cpv, tag, offset, data)
if (secondary) {
wbflush();
- REGVAL(LCA_IOC_CONF) = old_ioc_conf;
+ REGVAL(LCA_IOC_CONF) = 0x00;
wbflush();
splx(s);
}
#if 0
- printf("lca_conf_write: tag 0x%x, offset 0x%x -> 0x%x @ %p\n", tag,
- offset, data, datap);
+ printf("lca_conf_write: tag 0x%lx, reg 0x%lx -> 0x%x @ %p\n", tag,
+ reg, data, datap);
#endif
}
-
-int
-lca_find_io(cpv, tag, reg, iobasep, sizep)
- void *cpv;
- pci_conftag_t tag;
- pci_confoffset_t reg;
- pci_iooffset_t *iobasep;
- pci_iosize_t *sizep;
-{
- struct lca_config *lcp = cpv;
- pci_confreg_t addrdata, sizedata;
- pci_iooffset_t pci_iobase;
-
- if (reg < PCI_MAPREG_START || reg >= PCI_MAPREG_END || (reg & 3))
- panic("lca_map_io: bad request");
-
- addrdata = PCI_CONF_READ(lcp->lc_conffns, lcp->lc_confarg, tag, reg);
-
- PCI_CONF_WRITE(lcp->lc_conffns, lcp->lc_confarg, tag, reg, 0xffffffff);
- sizedata = PCI_CONF_READ(lcp->lc_conffns, lcp->lc_confarg, tag, reg);
- PCI_CONF_WRITE(lcp->lc_conffns, lcp->lc_confarg, tag, reg, addrdata);
-
- if (PCI_MAPREG_TYPE(addrdata) == PCI_MAPREG_TYPE_MEM)
- panic("lca_map_io: attempt to I/O map an memory region");
-
- if (iobasep != NULL)
- *iobasep = PCI_MAPREG_IO_ADDRESS(addrdata);
- if (sizep != NULL)
- *sizep = ~PCI_MAPREG_IO_ADDRESS(sizedata) + 1;
-
- return (0);
-}
-
-int
-lca_find_mem(cpv, tag, reg, paddrp, sizep, cacheablep)
- void *cpv;
- pci_conftag_t tag;
- pci_confoffset_t reg;
- pci_moffset_t *paddrp;
- pci_msize_t *sizep;
- int *cacheablep;
-{
- struct lca_config *lcp = cpv;
- pci_confreg_t addrdata, sizedata;
-
- if (reg < PCI_MAPREG_START || reg >= PCI_MAPREG_END || (reg & 3))
- panic("lca_map_mem: bad request");
-
- /*
- * The PROM has mapped the device for us. We take the address
- * that's been assigned to the register, and figure out what
- * physical and virtual addresses go with it...
- */
- addrdata = PCI_CONF_READ(lcp->lc_conffns, lcp->lc_confarg, tag, reg);
-
- PCI_CONF_WRITE(lcp->lc_conffns, lcp->lc_confarg, tag, reg, 0xffffffff);
- sizedata = PCI_CONF_READ(lcp->lc_conffns, lcp->lc_confarg, tag, reg);
- PCI_CONF_WRITE(lcp->lc_conffns, lcp->lc_confarg, tag, reg, addrdata);
-
- if (PCI_MAPREG_TYPE(addrdata) == PCI_MAPREG_TYPE_IO)
- panic("lca_map_mem: attempt to memory map an I/O region");
-
- switch (PCI_MAPREG_MEM_TYPE(addrdata)) {
- case PCI_MAPREG_MEM_TYPE_32BIT:
- case PCI_MAPREG_MEM_TYPE_32BIT_1M:
- break;
- case PCI_MAPREG_MEM_TYPE_64BIT:
-/* XXX */ printf("lca_map_mem: attempt to map 64-bit region\n");
-/* XXX */ break;
- default:
- printf("lca_map_mem: reserved mapping type\n");
- return EINVAL;
- }
-
- if (paddrp != NULL)
- *paddrp = PCI_MAPREG_MEM_ADDRESS(addrdata); /* PCI addr */
- if (sizep != NULL)
- *sizep = ~PCI_MAPREG_MEM_ADDRESS(sizedata) + 1;
- if (cacheablep != NULL)
- *cacheablep = PCI_MAPREG_MEM_CACHEABLE(addrdata);
-
- return 0;
-}
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