support UltraSPARC-IIe STICK counter as time base
This commit is contained in:
macallan
parent
bcd47cf3a7
commit
975e4c65ca
@ -1,4 +1,4 @@
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/* $NetBSD: psycho.c,v 1.113 2013/06/21 20:09:58 nakayama Exp $ */
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/* $NetBSD: psycho.c,v 1.114 2013/08/20 19:19:23 macallan Exp $ */
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/*
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* Copyright (c) 1999, 2000 Matthew R. Green
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@ -55,7 +55,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: psycho.c,v 1.113 2013/06/21 20:09:58 nakayama Exp $");
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__KERNEL_RCSID(0, "$NetBSD: psycho.c,v 1.114 2013/08/20 19:19:23 macallan Exp $");
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#include "opt_ddb.h"
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@ -70,6 +70,7 @@ __KERNEL_RCSID(0, "$NetBSD: psycho.c,v 1.113 2013/06/21 20:09:58 nakayama Exp $"
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#define PDB_INTR 0x04
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#define PDB_INTMAP 0x08
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#define PDB_CONF 0x10
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#define PDB_STICK 0x20
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int psycho_debug = 0x0;
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#define DPRINTF(l, s) do { if (psycho_debug & l) printf s; } while (0)
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#else
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@ -220,6 +221,8 @@ struct psycho_names {
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{ NULL, 0 }
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};
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struct psycho_softc *psycho0 = NULL;
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static int
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psycho_match(device_t parent, cfdata_t match, void *aux)
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{
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@ -307,7 +310,11 @@ psycho_attach(device_t parent, device_t self, void *aux)
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sc->sc_node = ma->ma_node;
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sc->sc_bustag = ma->ma_bustag;
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sc->sc_dmatag = ma->ma_dmatag;
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sc->sc_last_stick = 0;
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if (psycho0 == NULL)
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psycho0 = sc;
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DPRINTF(PDB_STICK, ("init psycho0 %lx\n", (long)sc));
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/*
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* Identify the device.
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*/
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@ -375,6 +382,7 @@ found:
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ma->ma_address[0], &sc->sc_bh);
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sc->sc_regs = (struct psychoreg *)
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bus_space_vaddr(sc->sc_bustag, sc->sc_bh);
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bus_space_subregion(sc->sc_bustag, sc->sc_bh,
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offsetof(struct psychoreg, psy_pcictl),
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sizeof(struct pci_ctl), &pci_ctl);
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@ -397,7 +405,6 @@ found:
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ma->ma_nreg);
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}
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csr = bus_space_read_8(sc->sc_bustag, sc->sc_bh,
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offsetof(struct psychoreg, psy_csr));
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sc->sc_ign = 0x7c0; /* APB IGN is always 0x7c */
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@ -1510,3 +1517,67 @@ psycho_sabre_dmamap_sync(bus_dma_tag_t t, bus_dmamap_t map, bus_addr_t offset,
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}
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bus_dmamap_sync(t->_parent, map, offset, len, ops);
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}
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/* US-IIe STICK support */
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long
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psycho_getstick(void)
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{
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long foo;
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foo = bus_space_read_8(psycho0->sc_bustag, psycho0->sc_bh,
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STICK_CNT_LOW) |
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(bus_space_read_8(psycho0->sc_bustag, psycho0->sc_bh,
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STICK_CNT_HIGH) & 0x7fffffff) << 32;
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return foo;
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}
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void
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psycho_setstick(long cnt)
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{
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/*
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* looks like we can't actually write the STICK counter, so instead we
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* prepare sc_last_stick for the coming interrupt setup
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*/
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#if 0
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bus_space_write_8(psycho0->sc_bustag, psycho0->sc_bh,
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STICK_CNT_HIGH, (cnt >> 32));
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bus_space_write_8(psycho0->sc_bustag, psycho0->sc_bh,
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STICK_CNT_LOW, (uint32_t)(cnt & 0xffffffff));
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#endif
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if (cnt == 0) {
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bus_space_write_8(psycho0->sc_bustag, psycho0->sc_bh,
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STICK_CMP_HIGH, 0);
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bus_space_write_8(psycho0->sc_bustag, psycho0->sc_bh,
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STICK_CMP_LOW, 0);
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psycho0->sc_last_stick = 0;
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}
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psycho0->sc_last_stick = psycho_getstick();
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DPRINTF(PDB_STICK, ("stick: %ld\n", psycho0->sc_last_stick));
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}
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void
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psycho_nextstick(long diff)
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{
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uint64_t cmp, now;
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/*
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* there is no way we'll ever overflow
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* the counter is 63 bits wide, at 12MHz that's >24000 years
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*/
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now = psycho_getstick() + 1000;
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cmp = psycho0->sc_last_stick;
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while (cmp < now)
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cmp += diff;
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bus_space_write_8(psycho0->sc_bustag, psycho0->sc_bh,
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STICK_CMP_HIGH, (cmp >> 32) & 0x7fffffff);
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bus_space_write_8(psycho0->sc_bustag, psycho0->sc_bh,
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STICK_CMP_LOW, (cmp & 0xffffffff));
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psycho0->sc_last_stick = cmp;
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: psychoreg.h,v 1.18 2013/08/20 10:33:03 macallan Exp $ */
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/* $NetBSD: psychoreg.h,v 1.19 2013/08/20 19:19:23 macallan Exp $ */
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/*
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* Copyright (c) 1999 Matthew R. Green
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@ -297,6 +297,12 @@ struct psychoreg {
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*/
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};
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#define STICK_CMP_LOW 0xf060
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#define STICK_CMP_HIGH 0xf068
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#define STICK_CNT_LOW 0xf070
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#define STICK_CNT_HIGH 0xf078
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#define ESTAR_MODE 0xf080
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/* what the bits mean! */
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/* PCI [a|b] control/status register */
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@ -313,9 +319,8 @@ struct psychoreg {
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/* the following registers only exist on US-IIe and US-II'i' */
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/* STICK_COMPARE */
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#define STICK_ENABLE 0x8000000000000000LL /* enable STICK interrupt */
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#define STICK_MASK 0x7fffffffffffffffLL /* counter is 63bit wide */
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/* STICK_CMP_HIGH */
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#define STICK_DISABLE 0x80000000 /* disable STICK interrupt */
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/*
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* ESTAR_MODE
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@ -1,4 +1,4 @@
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/* $NetBSD: psychovar.h,v 1.18 2011/06/02 00:24:23 christos Exp $ */
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/* $NetBSD: psychovar.h,v 1.19 2013/08/20 19:19:23 macallan Exp $ */
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/*
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* Copyright (c) 1999, 2000 Matthew R. Green
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@ -124,6 +124,7 @@ struct psycho_softc {
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struct sysmon_pswitch *sc_smcontext; /* power switch definition */
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int sc_powerpressed;/* already signaled */
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uint64_t sc_last_stick;
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};
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/* get a PCI offset address from bus_space_handle_t */
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@ -137,4 +138,8 @@ bus_space_tag_t psycho_alloc_bus_tag(struct psycho_pbm *, int);
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#define psycho_alloc_mem_tag(pp) psycho_alloc_bus_tag((pp), PCI_MEMORY_BUS_SPACE)
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#define psycho_alloc_io_tag(pp) psycho_alloc_bus_tag((pp), PCI_IO_BUS_SPACE)
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long psycho_getstick(void);
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void psycho_setstick(long);
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void psycho_nextstick(long);
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#endif /* _SPARC64_DEV_PSYCHOVAR_H_ */
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@ -1,4 +1,4 @@
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/* $NetBSD: cpu.h,v 1.102 2013/06/21 20:09:59 nakayama Exp $ */
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/* $NetBSD: cpu.h,v 1.103 2013/08/20 19:19:23 macallan Exp $ */
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/*
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* Copyright (c) 1992, 1993
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@ -358,11 +358,14 @@ void * reserve_dumppages(void *);
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struct timeval;
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int tickintr(void *); /* level 10/14 (tick) interrupt code */
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int stickintr(void *); /* system tick interrupt code */
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int stick2eintr(void *); /* system tick interrupt code */
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int clockintr(void *); /* level 10 (clock) interrupt code */
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int statintr(void *); /* level 14 (statclock) interrupt code */
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int schedintr(void *); /* level 10 (schedclock) interrupt code */
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void tickintr_establish(int, int (*)(void *));
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void stickintr_establish(int, int (*)(void *));
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void stick2eintr_establish(int, int (*)(void *));
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/* locore.s */
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struct fpstate64;
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void savefpstate(struct fpstate64 *);
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@ -1,4 +1,4 @@
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/* $NetBSD: clock.c,v 1.108 2013/05/24 23:02:08 nakayama Exp $ */
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/* $NetBSD: clock.c,v 1.109 2013/08/20 19:19:23 macallan Exp $ */
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/*
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* Copyright (c) 1992, 1993
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@ -55,7 +55,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: clock.c,v 1.108 2013/05/24 23:02:08 nakayama Exp $");
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__KERNEL_RCSID(0, "$NetBSD: clock.c,v 1.109 2013/08/20 19:19:23 macallan Exp $");
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#include "opt_multiprocessor.h"
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@ -90,6 +90,14 @@ __KERNEL_RCSID(0, "$NetBSD: clock.c,v 1.108 2013/05/24 23:02:08 nakayama Exp $")
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#include <sparc64/sparc64/timerreg.h>
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#include <sparc64/dev/iommureg.h>
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/* just because US-IIe STICK registers live in psycho space */
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <sparc64/dev/iommureg.h>
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#include <sparc64/dev/iommuvar.h>
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#include <sparc64/dev/psychoreg.h>
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#include <sparc64/dev/psychovar.h>
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/*
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* Clock assignments:
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@ -138,6 +146,7 @@ int timerblurb = 10; /* Guess a value; used before clock is attached */
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static u_int tick_get_timecount(struct timecounter *);
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static u_int stick_get_timecount(struct timecounter *);
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static u_int stick2e_get_timecount(struct timecounter *);
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/*
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* define timecounter "tick-counter"
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@ -154,6 +163,8 @@ static struct timecounter tick_timecounter = {
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NULL /* next timecounter */
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};
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/* US-III %stick */
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static struct timecounter stick_timecounter = {
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stick_get_timecount, /* get_timecount */
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0, /* no poll_pps */
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@ -165,6 +176,20 @@ static struct timecounter stick_timecounter = {
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NULL /* next timecounter */
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};
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/* US-IIe STICK counter */
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static struct timecounter stick2e_timecounter = {
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stick2e_get_timecount, /* get_timecount */
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0, /* no poll_pps */
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~0u, /* counter_mask */
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0, /* frequency - set at initialisation */
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"stick-counter", /* name */
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200, /* quality */
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0, /* private reference - UNUSED */
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NULL /* next timecounter */
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};
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/*
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* tick_get_timecount provide current tick counter value
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*/
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@ -180,6 +205,12 @@ stick_get_timecount(struct timecounter *tc)
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return getstick();
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}
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static u_int
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stick2e_get_timecount(struct timecounter *tc)
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{
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return psycho_getstick();
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}
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#ifdef MULTIPROCESSOR
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static u_int counter_get_timecount(struct timecounter *);
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@ -368,6 +399,27 @@ stickintr_establish(int pil, int (*fun)(void *))
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intr_restore(s);
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}
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void
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stick2eintr_establish(int pil, int (*fun)(void *))
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{
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int s;
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struct intrhand *ih;
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struct cpu_info *ci = curcpu();
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ih = sparc_softintr_establish(pil, fun, NULL);
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ih->ih_number = 1;
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if (CPU_IS_PRIMARY(ci))
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intr_establish(pil, true, ih);
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ci->ci_tick_ih = ih;
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/* set the next interrupt time */
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ci->ci_tick_increment = ci->ci_system_clockrate[0] / hz;
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s = intr_disable();
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psycho_nextstick(ci->ci_tick_increment);
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intr_restore(s);
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}
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/*
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* Set up the real-time and statistics clocks. Leave stathz 0 only if
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* no alternative timer is available.
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@ -413,6 +465,11 @@ cpu_initclocks(void)
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if (ci->ci_system_clockrate[0] == 0) {
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tick_timecounter.tc_frequency = ci->ci_cpu_clockrate[0];
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tc_init(&tick_timecounter);
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} else if(CPU_IS_HUMMINGBIRD()) {
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psycho_setstick(0);
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stick2e_timecounter.tc_frequency =
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ci->ci_system_clockrate[0];
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tc_init(&stick2e_timecounter);
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} else {
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setstick(0);
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stick_timecounter.tc_frequency =
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@ -433,6 +490,12 @@ cpu_initclocks(void)
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/* We don't have a counter-timer -- use %tick */
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tickintr_establish(PIL_CLOCK, tickintr);
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} else if(CPU_IS_HUMMINGBIRD()) {
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aprint_normal("No counter-timer -- using STICK "
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"at %luMHz as system clock.\n",
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(unsigned long)ci->ci_system_clockrate[1]);
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/* We don't have a counter-timer -- use STICK */
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stick2eintr_establish(PIL_CLOCK, stick2eintr);
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} else {
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aprint_normal("No counter-timer -- using %%stick "
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"at %luMHz as system clock.\n",
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@ -596,6 +659,22 @@ stickintr(void *cap)
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return (1);
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}
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int
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stick2eintr(void *cap)
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{
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int s;
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hardclock((struct clockframe *)cap);
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s = intr_disable();
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/* Reset the interrupt */
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psycho_nextstick(curcpu()->ci_tick_increment);
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intr_restore(s);
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curcpu()->ci_tick_evcnt.ev_count++;
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return (1);
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}
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#ifndef MULTIPROCESSOR
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/*
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* Level 14 (stat clock) interrupt handler.
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@ -1,4 +1,4 @@
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/* $NetBSD: cpu.c,v 1.103 2012/11/08 00:34:38 macallan Exp $ */
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/* $NetBSD: cpu.c,v 1.104 2013/08/20 19:19:23 macallan Exp $ */
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/*
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* Copyright (c) 1996
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@ -52,7 +52,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.103 2012/11/08 00:34:38 macallan Exp $");
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__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.104 2013/08/20 19:19:23 macallan Exp $");
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#include "opt_multiprocessor.h"
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@ -299,9 +299,8 @@ cpu_attach(device_t parent, device_t dev, void *aux)
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ci->ci_cpu_clockrate[1] = clk / 1000000;
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}
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if (!CPU_IS_HUMMINGBIRD()) {
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sclk = prom_getpropint(findroot(), "stick-frequency", 0);
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}
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ci->ci_system_clockrate[0] = sclk;
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ci->ci_system_clockrate[1] = sclk / 1000000;
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