1 files changed, 290 insertions, 0 deletions
diff --git a/sys/powerpc/ps3/platform_ps3.c b/sys/powerpc/ps3/platform_ps3.c
new file mode 100644
index 000000000000..556f723a0134
--- /dev/null
+++ b/sys/powerpc/ps3/platform_ps3.c
@@ -0,0 +1,290 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2010 Nathan Whitehorn
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/pcpu.h>
+#include <sys/proc.h>
+#include <sys/reboot.h>
+#include <sys/smp.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+
+#include <machine/bus.h>
+#include <machine/cpu.h>
+#include <machine/hid.h>
+#include <machine/platform.h>
+#include <machine/platformvar.h>
+#include <machine/smp.h>
+#include <machine/spr.h>
+#include <machine/vmparam.h>
+
+#include <dev/ofw/openfirm.h>
+
+#include "platform_if.h"
+#include "ps3-hvcall.h"
+
+#ifdef SMP
+extern void *ap_pcpu;
+#endif
+
+static int ps3_probe(platform_t);
+static int ps3_attach(platform_t);
+static void ps3_mem_regions(platform_t, struct mem_region *phys, int *physsz,
+    struct mem_region *avail, int *availsz);
+static vm_offset_t ps3_real_maxaddr(platform_t);
+static u_long ps3_timebase_freq(platform_t, struct cpuref *cpuref);
+#ifdef SMP
+static int ps3_smp_first_cpu(platform_t, struct cpuref *cpuref);
+static int ps3_smp_next_cpu(platform_t, struct cpuref *cpuref);
+static int ps3_smp_get_bsp(platform_t, struct cpuref *cpuref);
+static int ps3_smp_start_cpu(platform_t, struct pcpu *cpu);
+static void ps3_smp_probe_threads(platform_t);
+static struct cpu_group *ps3_smp_topo(platform_t);
+#endif
+static void ps3_reset(platform_t);
+static void ps3_cpu_idle(sbintime_t);
+
+static platform_method_t ps3_methods[] = {
+	PLATFORMMETHOD(platform_probe, 		ps3_probe),
+	PLATFORMMETHOD(platform_attach,		ps3_attach),
+	PLATFORMMETHOD(platform_mem_regions,	ps3_mem_regions),
+	PLATFORMMETHOD(platform_real_maxaddr,	ps3_real_maxaddr),
+	PLATFORMMETHOD(platform_timebase_freq,	ps3_timebase_freq),
+
+#ifdef SMP
+	PLATFORMMETHOD(platform_smp_first_cpu,	ps3_smp_first_cpu),
+	PLATFORMMETHOD(platform_smp_next_cpu,	ps3_smp_next_cpu),
+	PLATFORMMETHOD(platform_smp_get_bsp,	ps3_smp_get_bsp),
+	PLATFORMMETHOD(platform_smp_start_cpu,	ps3_smp_start_cpu),
+	PLATFORMMETHOD(platform_smp_probe_threads,	ps3_smp_probe_threads),
+	PLATFORMMETHOD(platform_smp_topo,	ps3_smp_topo),
+#endif
+
+	PLATFORMMETHOD(platform_reset,		ps3_reset),
+
+	PLATFORMMETHOD_END
+};
+
+static platform_def_t ps3_platform = {
+	"ps3",
+	ps3_methods,
+	0
+};
+
+PLATFORM_DEF(ps3_platform);
+
+static int ps3_boot_pir = 0;
+
+static int
+ps3_probe(platform_t plat)
+{
+	phandle_t root;
+	char compatible[64];
+
+	root = OF_finddevice("/");
+	if (OF_getprop(root, "compatible", compatible, sizeof(compatible)) <= 0)
+                return (BUS_PROBE_NOWILDCARD);
+
+	if (strncmp(compatible, "sony,ps3", sizeof(compatible)) != 0)
+		return (BUS_PROBE_NOWILDCARD);
+
+	return (BUS_PROBE_SPECIFIC);
+}
+
+static int
+ps3_attach(platform_t plat)
+{
+
+	pmap_mmu_install("mmu_ps3", BUS_PROBE_SPECIFIC);
+	cpu_idle_hook = ps3_cpu_idle;
+
+	/* Record our PIR at boot for later */
+	ps3_boot_pir = mfspr(SPR_PIR);
+
+	return (0);
+}
+
+void
+ps3_mem_regions(platform_t plat, struct mem_region *phys, int *physsz,
+    struct mem_region *avail_regions, int *availsz)
+{
+	uint64_t lpar_id, junk;
+	int i;
+
+	/* Prefer device tree information if available */
+	if (OF_finddevice("/") != -1) {
+		ofw_mem_regions(phys, physsz, avail_regions, availsz);
+	} else {
+		/* Real mode memory region is first segment */
+		phys[0].mr_start = 0;
+		phys[0].mr_size = ps3_real_maxaddr(plat);
+		*physsz = *availsz = 1;
+		avail_regions[0] = phys[0];
+	}
+
+	/* Now get extended memory region */
+	lv1_get_logical_partition_id(&lpar_id);
+	lv1_get_repository_node_value(lpar_id,
+	    lv1_repository_string("bi") >> 32,
+	    lv1_repository_string("rgntotal"), 0, 0,
+	    &phys[*physsz].mr_size, &junk);
+	for (i = 0; i < *physsz; i++)
+		phys[*physsz].mr_size -= phys[i].mr_size;
+
+	/* Convert to maximum amount we can allocate in 16 MB pages */
+	phys[*physsz].mr_size -= phys[*physsz].mr_size % (16*1024*1024);
+
+	/* Allocate extended memory region */
+	lv1_allocate_memory(phys[*physsz].mr_size, 24 /* 16 MB pages */,
+	    0, 0x04 /* any address */, &phys[*physsz].mr_start, &junk);
+	avail_regions[*availsz] = phys[*physsz];
+	(*physsz)++;
+	(*availsz)++;
+}
+
+static u_long
+ps3_timebase_freq(platform_t plat, struct cpuref *cpuref)
+{
+	uint64_t ticks, node_id, junk;
+
+	lv1_get_repository_node_value(PS3_LPAR_ID_PME, 
+	    lv1_repository_string("be") >> 32, 0, 0, 0, &node_id, &junk);
+	lv1_get_repository_node_value(PS3_LPAR_ID_PME,
+	    lv1_repository_string("be") >> 32, node_id,
+	    lv1_repository_string("clock"), 0, &ticks, &junk);
+
+	return (ticks);
+}
+
+#ifdef SMP
+static int
+ps3_smp_first_cpu(platform_t plat, struct cpuref *cpuref)
+{
+
+	cpuref->cr_cpuid = 0;
+	cpuref->cr_hwref = ps3_boot_pir;
+
+	return (0);
+}
+
+static int
+ps3_smp_next_cpu(platform_t plat, struct cpuref *cpuref)
+{
+
+	if (cpuref->cr_cpuid >= 1)
+		return (ENOENT);
+
+	cpuref->cr_cpuid++;
+	cpuref->cr_hwref = !ps3_boot_pir;
+
+	return (0);
+}
+
+static int
+ps3_smp_get_bsp(platform_t plat, struct cpuref *cpuref)
+{
+
+	cpuref->cr_cpuid = 0;
+	cpuref->cr_hwref = ps3_boot_pir;
+
+	return (0);
+}
+
+static int
+ps3_smp_start_cpu(platform_t plat, struct pcpu *pc)
+{
+	/* kernel is spinning on 0x40 == -1 right now */
+	volatile uint32_t *secondary_spin_sem =
+	    (uint32_t *)PHYS_TO_DMAP((uintptr_t)0x40);
+	int remote_pir = pc->pc_hwref;
+	int timeout;
+
+	ap_pcpu = pc;
+
+	/* Try both PIR values, looping a few times: the HV likes moving us */
+	timeout = 10000;
+	while (!pc->pc_awake && timeout--) {
+		*secondary_spin_sem = remote_pir;
+		powerpc_sync();
+		DELAY(100);
+		remote_pir = !remote_pir;
+	}
+
+	return ((pc->pc_awake) ? 0 : EBUSY);
+}
+
+static void
+ps3_smp_probe_threads(platform_t plat)
+{
+	mp_ncores = 1;
+	smp_threads_per_core = 2;
+}
+
+static struct cpu_group *
+ps3_smp_topo(platform_t plat)
+{
+	return (smp_topo_1level(CG_SHARE_L1, 2, CG_FLAG_SMT));
+}
+#endif
+
+static void
+ps3_reset(platform_t plat)
+{
+	lv1_panic(1);
+}
+
+static vm_offset_t
+ps3_real_maxaddr(platform_t plat)
+{
+	uint64_t lpar_id, junk, ppe_id;
+	static uint64_t rm_maxaddr = 0;
+
+	if (rm_maxaddr == 0) {
+		/* Get real mode memory region */
+		lv1_get_logical_partition_id(&lpar_id);
+		lv1_get_logical_ppe_id(&ppe_id);
+
+		lv1_get_repository_node_value(lpar_id,
+		    lv1_repository_string("bi") >> 32,
+		    lv1_repository_string("pu"),
+		    ppe_id, lv1_repository_string("rm_size"),
+		    &rm_maxaddr, &junk);
+	}
+
+	return (rm_maxaddr);
+}
+
+static void
+ps3_cpu_idle(sbintime_t sbt)
+{
+	lv1_pause(0);
+}