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Merge in support for PAPR-compliant (Power Architecture Platform

Browse Source 
Requirements) systems from the projects/pseries branch. This in principle
includes all IBM POWER hardware released in the last 15 years with the
exception of POWER3-based systems when run in 64-bit mode. The main
development target, however, has been the PAPR logical partition support
that is the default target in KVM on POWER and QEMU -- mileage may vary
on actual hardware at present. Much of the heavy lifting here was done
by Andreas Tobler.

Approved by:	re (kib)
This commit is contained in:
Nathan Whitehorn 2013-09-17 17:37:04 +00:00
parent 982b134610
commit 7a8d25c037
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=255643
16 changed files with 2858 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
sys/conf/files.powerpc
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@ -225,6 +225,15 @@ powerpc/ps3/ps3disk.c optional ps3
powerpc/ps3/ps3pic.c optional ps3
powerpc/ps3/ps3_syscons.c optional ps3 sc
powerpc/ps3/ps3-hvcall.S optional ps3 sc
powerpc/pseries/phyp-hvcall.S optional pseries powerpc64
powerpc/pseries/mmu_phyp.c optional pseries powerpc64
powerpc/pseries/phyp_console.c optional pseries powerpc64
powerpc/pseries/platform_chrp.c optional pseries
powerpc/pseries/plpar_iommu.c optional pseries powerpc64
powerpc/pseries/rtas_dev.c optional pseries
powerpc/pseries/rtas_pci.c optional pseries pci
powerpc/pseries/vdevice.c optional pseries powerpc64
powerpc/pseries/xics.c optional pseries powerpc64
powerpc/psim/iobus.c optional psim
powerpc/psim/ata_iobus.c optional ata psim
powerpc/psim/openpic_iobus.c optional psim

1
sys/conf/options.powerpc
View File

@ -22,6 +22,7 @@ MPC85XX opt_platform.h
POWERMAC opt_platform.h
PS3 opt_platform.h
MAMBO
PSERIES
PSIM
WII opt_platform.h

1
sys/powerpc/conf/DEFAULTS
View File

@ -9,6 +9,7 @@ device mem # Memory and kernel memory devices
# UART chips on this platform
device uart_ns8250
options GEOM_PART_BSD
options GEOM_PART_MBR
options NEW_PCIB

1
sys/powerpc/conf/GENERIC
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@ -30,6 +30,7 @@ makeoptions WITH_CTF=1
options POWERMAC #NewWorld Apple PowerMacs
options PSIM #GDB PSIM ppc simulator
options MAMBO #IBM Mambo Full System Simulator
options PSERIES #PAPR-compliant systems
options SCHED_ULE #ULE scheduler
options PREEMPTION #Enable kernel thread preemption

6
sys/powerpc/conf/GENERIC64
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@ -30,6 +30,7 @@ makeoptions WITH_CTF=1
options POWERMAC #NewWorld Apple PowerMacs
options PS3 #Sony Playstation 3
options MAMBO #IBM Mambo Full System Simulator
options PSERIES #PAPR-compliant systems (e.g. IBM p)
options SCHED_ULE #ULE scheduler
options PREEMPTION #Enable kernel thread preemption
@ -131,6 +132,9 @@ device uart
device uart_z8530
# Ethernet hardware
device em # Intel PRO/1000 Gigabit Ethernet Family
device igb # Intel PRO/1000 PCIE Server Gigabit Family
device ixgbe # Intel PRO/10GbE PCIE Ethernet Family
device glc # Sony Playstation 3 Ethernet
# PCI Ethernet NICs that use the common MII bus controller code.
@ -139,6 +143,8 @@ device bge # Broadcom BCM570xx Gigabit Ethernet
device gem # Sun GEM/Sun ERI/Apple GMAC
device dc # DEC/Intel 21143 and various workalikes
device fxp # Intel EtherExpress PRO/100B (82557, 82558)
device re # RealTek 8139C+/8169/8169S/8110S
device rl # RealTek 8129/8139
# Pseudo devices.
device loop # Network loopback

420
sys/powerpc/pseries/mmu_phyp.c Normal file
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@ -0,0 +1,420 @@
/*
* Copyright (C) 2010 Andreas Tobler
* 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 TOOLS GMBH 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/ktr.h>
#include <sys/lock.h>
#include <sys/msgbuf.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/vmmeter.h>
#include <dev/ofw/openfirm.h>
#include <machine/ofw_machdep.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <vm/vm_map.h>
#include <vm/vm_object.h>
#include <vm/vm_extern.h>
#include <vm/vm_pageout.h>
#include <vm/uma.h>
#include <powerpc/aim/mmu_oea64.h>
#include "mmu_if.h"
#include "moea64_if.h"
#include "phyp-hvcall.h"
extern int n_slbs;
/*
* Kernel MMU interface
*/
static void mphyp_bootstrap(mmu_t mmup, vm_offset_t kernelstart,
vm_offset_t kernelend);
static void mphyp_cpu_bootstrap(mmu_t mmup, int ap);
static void mphyp_pte_synch(mmu_t, uintptr_t pt, struct lpte *pvo_pt);
static void mphyp_pte_clear(mmu_t, uintptr_t pt, struct lpte *pvo_pt,
uint64_t vpn, u_int64_t ptebit);
static void mphyp_pte_unset(mmu_t, uintptr_t pt, struct lpte *pvo_pt,
uint64_t vpn);
static void mphyp_pte_change(mmu_t, uintptr_t pt, struct lpte *pvo_pt,
uint64_t vpn);
static int mphyp_pte_insert(mmu_t, u_int ptegidx, struct lpte *pvo_pt);
static uintptr_t mphyp_pvo_to_pte(mmu_t, const struct pvo_entry *pvo);
#define VSID_HASH_MASK 0x0000007fffffffffULL
static mmu_method_t mphyp_methods[] = {
MMUMETHOD(mmu_bootstrap, mphyp_bootstrap),
MMUMETHOD(mmu_cpu_bootstrap, mphyp_cpu_bootstrap),
MMUMETHOD(moea64_pte_synch, mphyp_pte_synch),
MMUMETHOD(moea64_pte_clear, mphyp_pte_clear),
MMUMETHOD(moea64_pte_unset, mphyp_pte_unset),
MMUMETHOD(moea64_pte_change, mphyp_pte_change),
MMUMETHOD(moea64_pte_insert, mphyp_pte_insert),
MMUMETHOD(moea64_pvo_to_pte, mphyp_pvo_to_pte),
{ 0, 0 }
};
MMU_DEF_INHERIT(pseries_mmu, "mmu_phyp", mphyp_methods, 0, oea64_mmu);
static void
mphyp_bootstrap(mmu_t mmup, vm_offset_t kernelstart, vm_offset_t kernelend)
{
uint64_t final_pteg_count = 0;
char buf[8];
uint32_t prop[2];
uint32_t nptlp, shift = 0, slb_encoding = 0;
phandle_t dev, node, root;
int idx, len, res;
moea64_early_bootstrap(mmup, kernelstart, kernelend);
root = OF_peer(0);
dev = OF_child(root);
while (dev != 0) {
res = OF_getprop(dev, "name", buf, sizeof(buf));
if (res > 0 && strcmp(buf, "cpus") == 0)
break;
dev = OF_peer(dev);
}
node = OF_child(dev);
while (node != 0) {
res = OF_getprop(node, "device_type", buf, sizeof(buf));
if (res > 0 && strcmp(buf, "cpu") == 0)
break;
node = OF_peer(node);
}
res = OF_getprop(node, "ibm,pft-size", prop, sizeof(prop));
if (res <= 0)
panic("mmu_phyp: unknown PFT size");
final_pteg_count = 1 << prop[1];
res = OF_getprop(node, "ibm,slb-size", prop, sizeof(prop[0]));
if (res > 0)
n_slbs = prop[0];
moea64_pteg_count = final_pteg_count / sizeof(struct lpteg);
/*
* Scan the large page size property for PAPR compatible machines.
* See PAPR D.5 Changes to Section 5.1.4, 'CPU Node Properties'
* for the encoding of the property.
*/
len = OF_getproplen(node, "ibm,segment-page-sizes");
if (len > 0) {
/*
* We have to use a variable length array on the stack
* since we have very limited stack space.
*/
cell_t arr[len/sizeof(cell_t)];
res = OF_getprop(node, "ibm,segment-page-sizes", &arr,
sizeof(arr));
len /= 4;
idx = 0;
while (len > 0) {
shift = arr[idx];
slb_encoding = arr[idx + 1];
nptlp = arr[idx + 2];
idx += 3;
len -= 3;
while (len > 0 && nptlp) {
idx += 2;
len -= 2;
nptlp--;
}
}
moea64_large_page_shift = shift;
moea64_large_page_size = 1 << shift;
}
moea64_mid_bootstrap(mmup, kernelstart, kernelend);
moea64_late_bootstrap(mmup, kernelstart, kernelend);
}
static void
mphyp_cpu_bootstrap(mmu_t mmup, int ap)
{
struct slb *slb = PCPU_GET(slb);
register_t seg0;
int i;
/*
* Install kernel SLB entries
*/
__asm __volatile ("slbia");
__asm __volatile ("slbmfee %0,%1; slbie %0;" : "=r"(seg0) : "r"(0));
for (i = 0; i < 64; i++) {
if (!(slb[i].slbe & SLBE_VALID))
continue;
__asm __volatile ("slbmte %0, %1" ::
"r"(slb[i].slbv), "r"(slb[i].slbe));
}
}
static void
mphyp_pte_synch(mmu_t mmu, uintptr_t slot, struct lpte *pvo_pt)
{
struct lpte pte;
uint64_t junk;
phyp_pft_hcall(H_READ, 0, slot, 0, 0, &pte.pte_hi, &pte.pte_lo,
&junk);
pvo_pt->pte_lo |= pte.pte_lo & (LPTE_CHG | LPTE_REF);
}
static void
mphyp_pte_clear(mmu_t mmu, uintptr_t slot, struct lpte *pvo_pt, uint64_t vpn,
u_int64_t ptebit)
{
if (ptebit & LPTE_CHG)
phyp_hcall(H_CLEAR_MOD, 0, slot);
if (ptebit & LPTE_REF)
phyp_hcall(H_CLEAR_REF, 0, slot);
}
static void
mphyp_pte_unset(mmu_t mmu, uintptr_t slot, struct lpte *pvo_pt, uint64_t vpn)
{
/* XXX: last argument can check the VPN -- set flag to enable */
phyp_hcall(H_REMOVE, 0, slot, vpn);
}
static void
mphyp_pte_change(mmu_t mmu, uintptr_t slot, struct lpte *pvo_pt, uint64_t vpn)
{
struct lpte evicted;
uint64_t index, junk;
int64_t result;
/*
* NB: this is protected by the global table lock, so this two-step
* is safe, except for the scratch-page case. No CPUs on which we run
* this code should be using scratch pages.
*/
KASSERT(!(pvo_pt->pte_hi & LPTE_LOCKED),
("Locked pages not supported on PHYP"));
/* XXX: optimization using H_PROTECT for common case? */
result = phyp_hcall(H_REMOVE, 0, slot, vpn);
if (result != H_SUCCESS)
panic("mphyp_pte_change() invalidation failure: %ld\n", result);
result = phyp_pft_hcall(H_ENTER, H_EXACT, slot, pvo_pt->pte_hi,
pvo_pt->pte_lo, &index, &evicted.pte_lo, &junk);
if (result != H_SUCCESS)
panic("mphyp_pte_change() insertion failure: %ld\n", result);
}
static __inline int
mphyp_pte_spillable_ident(u_int ptegidx, struct lpte *to_evict)
{
uint64_t slot, junk, k;
struct lpte pt;
int i, j;
/* Start at a random slot */
i = mftb() % 8;
k = -1;
for (j = 0; j < 8; j++) {
slot = (ptegidx << 3) + (i + j) % 8;
phyp_pft_hcall(H_READ, 0, slot, 0, 0, &pt.pte_hi, &pt.pte_lo,
&junk);
if (pt.pte_hi & LPTE_SWBITS)
continue;
/* This is a candidate, so remember it */
k = slot;
/* Try to get a page that has not been used lately */
if (!(pt.pte_lo & LPTE_REF)) {
memcpy(to_evict, &pt, sizeof(struct lpte));
return (k);
}
}
phyp_pft_hcall(H_READ, 0, slot, 0, 0, &to_evict->pte_hi,
&to_evict->pte_lo, &junk);
return (k);
}
static int
mphyp_pte_insert(mmu_t mmu, u_int ptegidx, struct lpte *pvo_pt)
{
int64_t result;
struct lpte evicted;
struct pvo_entry *pvo;
uint64_t index, junk;
u_int pteg_bktidx;
/* Check for locked pages, which we can't support on this system */
KASSERT(!(pvo_pt->pte_hi & LPTE_LOCKED),
("Locked pages not supported on PHYP"));
/* Initialize PTE */
pvo_pt->pte_hi |= LPTE_VALID;
pvo_pt->pte_hi &= ~LPTE_HID;
evicted.pte_hi = 0;
/*
* First try primary hash.
*/
pteg_bktidx = ptegidx;
result = phyp_pft_hcall(H_ENTER, 0, pteg_bktidx << 3, pvo_pt->pte_hi,
pvo_pt->pte_lo, &index, &evicted.pte_lo, &junk);
if (result == H_SUCCESS)
return (index & 0x07);
KASSERT(result == H_PTEG_FULL, ("Page insertion error: %ld "
"(ptegidx: %#x/%#x, PTE %#lx/%#lx", result, ptegidx,
moea64_pteg_count, pvo_pt->pte_hi, pvo_pt->pte_lo));
/*
* Next try secondary hash.
*/
pteg_bktidx ^= moea64_pteg_mask;
pvo_pt->pte_hi |= LPTE_HID;
result = phyp_pft_hcall(H_ENTER, 0, pteg_bktidx << 3,
pvo_pt->pte_hi, pvo_pt->pte_lo, &index, &evicted.pte_lo, &junk);
if (result == H_SUCCESS)
return (index & 0x07);
KASSERT(result == H_PTEG_FULL, ("Secondary page insertion error: %ld",
result));
/*
* Out of luck. Find a PTE to sacrifice.
*/
pteg_bktidx = ptegidx;
index = mphyp_pte_spillable_ident(pteg_bktidx, &evicted);
if (index == -1L) {
pteg_bktidx ^= moea64_pteg_mask;
index = mphyp_pte_spillable_ident(pteg_bktidx, &evicted);
}
if (index == -1L) {
/* No freeable slots in either PTEG? We're hosed. */
panic("mphyp_pte_insert: overflow");
return (-1);
}
if (pteg_bktidx == ptegidx)
pvo_pt->pte_hi &= ~LPTE_HID;
else
pvo_pt->pte_hi |= LPTE_HID;
/*
* Synchronize the sacrifice PTE with its PVO, then mark both
* invalid. The PVO will be reused when/if the VM system comes
* here after a fault.
*/
if (evicted.pte_hi & LPTE_HID)
pteg_bktidx ^= moea64_pteg_mask; /* PTEs indexed by primary */
LIST_FOREACH(pvo, &moea64_pvo_table[pteg_bktidx], pvo_olink) {
if (pvo->pvo_pte.lpte.pte_hi == evicted.pte_hi) {
KASSERT(pvo->pvo_pte.lpte.pte_hi & LPTE_VALID,
("Invalid PVO for valid PTE!"));
phyp_hcall(H_REMOVE, 0, index, 0);
PVO_PTEGIDX_CLR(pvo);
moea64_pte_overflow++;
break;
}
}
KASSERT(pvo->pvo_pte.lpte.pte_hi == evicted.pte_hi,
("Unable to find PVO for spilled PTE"));
/*
* Set the new PTE.
*/
result = phyp_pft_hcall(H_ENTER, H_EXACT, index, pvo_pt->pte_hi,
pvo_pt->pte_lo, &index, &evicted.pte_lo, &junk);
if (result == H_SUCCESS)
return (index & 0x07);
panic("Page replacement error: %ld", result);
return (-1);
}
static __inline u_int
va_to_pteg(uint64_t vsid, vm_offset_t addr, int large)
{
uint64_t hash;
int shift;
shift = large ? moea64_large_page_shift : ADDR_PIDX_SHFT;
hash = (vsid & VSID_HASH_MASK) ^ (((uint64_t)addr & ADDR_PIDX) >>
shift);
return (hash & moea64_pteg_mask);
}
static uintptr_t
mphyp_pvo_to_pte(mmu_t mmu, const struct pvo_entry *pvo)
{
uint64_t vsid;
u_int ptegidx;
/* If the PTEG index is not set, then there is no page table entry */
if (!PVO_PTEGIDX_ISSET(pvo))
return (-1);
vsid = PVO_VSID(pvo);
ptegidx = va_to_pteg(vsid, PVO_VADDR(pvo), pvo->pvo_vaddr & PVO_LARGE);
/*
* We can find the actual pte entry without searching by grabbing
* the PTEG index from 3 unused bits in pvo_vaddr and by
* noticing the HID bit.
*/
if (pvo->pvo_pte.lpte.pte_hi & LPTE_HID)
ptegidx ^= moea64_pteg_mask;
return ((ptegidx << 3) | PVO_PTEGIDX_GET(pvo));
}

68
sys/powerpc/pseries/phyp-hvcall.S Normal file
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@ -0,0 +1,68 @@
/*-
* Copyright (C) 2010 Andreas Tobler
* 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 TOOLS GMBH 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.
*
* $FreeBSD$
*/
#include <machine/asm.h>
/* Hypervisor entry call. */
#define hc .long 0x44000022
/*
* Simple HV calls take the same arguments, with the same ABI, as this
* C function
*/
ASENTRY(phyp_hcall)
mflr %r0
std %r0,16(%r1)
hc /* invoke the hypervisor */
ld %r0,16(%r1)
mtlr %r0
blr /* return r3 = status */
/*
* PFT HV calls take a special ABI (see PAPR 14.5.4.1)
*
* r3-r7 arguments passed unchanged, r8-r10 are addresses of return values
* HV takes the same r3-r7, but returns values in r3, r4-r6
*/
ASENTRY(phyp_pft_hcall)
mflr %r0
std %r0,16(%r1)
stdu %r1,-80(%r1)
std %r8,48(%r1) /* save arguments */
std %r9,56(%r1)
std %r10,64(%r1)
hc /* invoke the hypervisor */
ld %r11,48(%r1) /* store results */
std %r4,0(%r11)
ld %r11,56(%r1)
std %r5,0(%r11)
ld %r11,64(%r1)
std %r6,0(%r11)
ld %r1,0(%r1) /* exit */
ld %r0,16(%r1)
mtlr %r0
blr /* return r3 = status */

305
sys/powerpc/pseries/phyp-hvcall.h Normal file
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@ -0,0 +1,305 @@
/*-
* Copyright (C) 2010 Andreas Tobler
* 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 TOOLS GMBH 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.
*
* $FreeBSD$
*/
#ifndef _PSERIES_PHYP_HVCALL_H_
#define _PSERIES_PHYP_HVCALL_H_
/* Information taken from: Power.org PAPR, Version 2.4 (December 7, 2009). */
#include <sys/types.h>
/* Return codes. */
#define H_SUCCESS 0
#define H_BUSY 1 /* Hardware Busy -- Retry Later. */
#define H_CLOSED 2 /* Virtual I/O connection is closed. */
#define H_NOT_AVAILABLE 3
#define H_CONSTRAINED 4 /* The request called for resources in excess of
the maximum allowed. The resultant allocation
was constrained to maximum allowed. */
#define H_PARTIAL 5 /* The request completed only partially successful.
Parameters were valid but some specific hcall
function condition prevented fully completing the
architected function, see the specific hcall
definition for possible reasons. */
#define H_IN_PROGRESS 14
#define H_PAGE_REGISTERED 15
#define H_PARTIAL_STORE 16
#define H_PENDING 17
#define H_CONTINUE 18
#define H_LONG_BUSY_ORDER_1_MS 9900 /* This return code is identical to
H_BUSY, but with the added bonus of a
hint to the partition OS. If the
partition OS can delay for 1
millisecond, the hcall will likely
succeed on a new hcall with no further
busy return codes. If the partition OS
cannot handle a delay, they are
certainly free to immediately turn
around and try again. */
#define H_LONG_BUSY_ORDER_10_MS 9901 /* Similar to H_LONG_BUSY_ORDER_1_MS, but
the hint is 10mSec wait this time. */
#define H_LONG_BUSY_ORDER_100_MS 9902 /* Similar to H_LONG_BUSY_ORDER_1_MS, but
the hint is 100mSec wait this time. */
#define H_LONG_BUSY_ORDER_1_S 9903 /* Similar to H_LONG_BUSY_ORDER_1_MS, but
the hint is 1Sec wait this time. */
#define H_LONG_BUSY_ORDER_10_S 9904 /* Similar to H_LONG_BUSY_ORDER_1_MS, but
the hint is 10Sec wait this time. */
#define H_LONG_BUSY_ORDER_100_S 9905 /* Similar to H_LONG_BUSY_ORDER_1_MS, but
the hint is 100Sec wait this time. */
#define H_HARDWARE -1 /* Error. */
#define H_FUNCTION -2 /* Not supported. */
#define H_PRIVILEGE -3 /* Caller not in privileged mode. */
#define H_PARAMETER -4 /* Outside valid range for partition or conflicting. */
#define H_BAD_MODE -5 /* Illegal MSR value. */
#define H_PTEG_FULL -6 /* The requested pteg was full. */
#define H_NOT_FOUND -7 /* The requested entitiy was not found. */
#define H_RESERVED_DABR -8 /* The requested address is reserved by the
hypervisor on this processor. */
#define H_NOMEM -9
#define H_AUTHORITY -10 /* The caller did not have authority to perform the
function. */
#define H_PERMISSION -11 /* The mapping specified by the request does not
allow for the requested transfer. */
#define H_DROPPED -12 /* One or more packets could not be delivered to
their requested destinations. */
#define H_S_PARM -13 /* The source parameter is illegal. */
#define H_D_PARM -14 /* The destination parameter is illegal. */
#define H_R_PARM -15 /* The remote TCE mapping is illegal. */
#define H_RESOURCE -16 /* One or more required resources are in use. */
#define H_ADAPTER_PARM -17 /* Invalid adapter. */
#define H_RH_PARM -18 /* Resource not valid or logical partition
conflicting. */
#define H_RCQ_PARM -19 /* RCQ not valid or logical partition conflicting. */
#define H_SCQ_PARM -20 /* SCQ not valid or logical partition conflicting. */
#define H_EQ_PARM -21 /* EQ not valid or logical partition conflicting. */
#define H_RT_PARM -22 /* Invalid resource type. */
#define H_ST_PARM -23 /* Invalid service type. */
#define H_SIGT_PARM -24 /* Invalid signalling type. */
#define H_TOKEN_PARM -25 /* Invalid token. */
#define H_MLENGTH_PARM -27 /* Invalid memory length. */
#define H_MEM_PARM -28 /* Invalid memory I/O virtual address. */
#define H_MEM_ACCESS_PARM -29 /* Invalid memory access control. */
#define H_ATTR_PARM -30 /* Invalid attribute value. */
#define H_PORT_PARM -31 /* Invalid port number. */
#define H_MCG_PARM -32 /* Invalid multicast group. */
#define H_VL_PARM -33 /* Invalid virtual lane. */
#define H_TSIZE_PARM -34 /* Invalid trace size. */
#define H_TRACE_PARM -35 /* Invalid trace buffer. */
#define H_MASK_PARM -37 /* Invalid mask value. */
#define H_MCG_FULL -38 /* Multicast attachments exceeded. */
#define H_ALIAS_EXIST -39 /* Alias QP already defined. */
#define H_P_COUNTER -40 /* Invalid counter specification. */
#define H_TABLE_FULL -41 /* Resource page table full. */
#define H_ALT_TABLE -42 /* Alternate table already exists / alternate page
table not available. */
#define H_MR_CONDITION -43 /* Invalid memory region condition. */
#define H_NOT_ENOUGH_RESOURCES -44 /* Insufficient resources. */
#define H_R_STATE -45 /* Invalid resource state condition or sequencing
error. */
#define H_RESCINDED -46
#define H_ABORTED -54
#define H_P2 -55
#define H_P3 -56
#define H_P4 -57
#define H_P5 -58
#define H_P6 -59
#define H_P7 -60
#define H_P8 -61
#define H_P9 -62
#define H_NOOP -63
#define H_TOO_BIG -64
#define H_UNSUPPORTED -67 /* Parameter value outside of the range supported
by this implementation. */
/* Flags. */
/* Table 168. Page Frame Table Access flags field definition. */
#define H_EXACT (1UL<<(63-24))
#define H_R_XLATE (1UL<<(63-25))
#define H_READ_4 (1UL<<(63-26))
/* Table 178. CMO Page Usage State flags Definition. */
#define H_PAGE_STATE_CHANGE (1UL<<(63-28))
#define H_PAGE_UNUSED ((1UL<<(63-29)) | (1UL<<(63-30)))
#define H_PAGE_SET_UNUSED (H_PAGE_STATE_CHANGE | H_PAGE_UNUSED)
#define H_PAGE_SET_LOANED (H_PAGE_SET_UNUSED | (1UL<<(63-31)))
#define H_PAGE_SET_ACTIVE H_PAGE_STATE_CHANGE
/* Table 168. Page Frame Table Access flags field definition. */
#define H_AVPN (1UL<<(63-32))
#define H_ANDCOND (1UL<<(63-33))
#define H_ICACHE_INVALIDATE (1UL<<(63-40))
#define H_ICACHE_SYNCHRONIZE (1UL<<(63-41))
#define H_ZERO_PAGE (1UL<<(63-48))
#define H_COPY_PAGE (1UL<<(63-49))
#define H_N (1UL<<(63-61))
#define H_PP1 (1UL<<(63-62))
#define H_PP2 (1UL<<(63-63))
/* pSeries hypervisor opcodes. */
#define H_REMOVE 0x04
#define H_ENTER 0x08
#define H_READ 0x0c
#define H_CLEAR_MOD 0x10
#define H_CLEAR_REF 0x14
#define H_PROTECT 0x18
#define H_GET_TCE 0x1c
#define H_PUT_TCE 0x20
#define H_SET_SPRG0 0x24
#define H_SET_DABR 0x28
#define H_PAGE_INIT 0x2c
#define H_SET_ASR 0x30
#define H_ASR_ON 0x34
#define H_ASR_OFF 0x38
#define H_LOGICAL_CI_LOAD 0x3c
#define H_LOGICAL_CI_STORE 0x40
#define H_LOGICAL_CACHE_LOAD 0x44
#define H_LOGICAL_CACHE_STORE 0x48
#define H_LOGICAL_ICBI 0x4c
#define H_LOGICAL_DCBF 0x50
#define H_GET_TERM_CHAR 0x54
#define H_PUT_TERM_CHAR 0x58
#define H_REAL_TO_LOGICAL 0x5c
#define H_HYPERVISOR_DATA 0x60
#define H_EOI 0x64
#define H_CPPR 0x68
#define H_IPI 0x6c
#define H_IPOLL 0x70
#define H_XIRR 0x74
#define H_MIGRATE_DMA 0x78
#define H_PERFMON 0x7c
#define H_REGISTER_VPA 0xdc
#define H_CEDE 0xe0
#define H_CONFER 0xe4
#define H_PROD 0xe8
#define H_GET_PPP 0xec
#define H_SET_PPP 0xf0
#define H_PURR 0xf4
#define H_PIC 0xf8
#define H_REG_CRQ 0xfc
#define H_FREE_CRQ 0x100
#define H_VIO_SIGNAL 0x104
#define H_SEND_CRQ 0x108
#define H_PUT_RTCE 0x10c
#define H_COPY_RDMA 0x110
#define H_REGISTER_LOGICAL_LAN 0x114
#define H_FREE_LOGICAL_LAN 0x118
#define H_ADD_LOGICAL_LAN_BUFFER 0x11c
#define H_SEND_LOGICAL_LAN 0x120
#define H_BULK_REMOVE 0x124
#define H_WRITE_RDMA 0x128
#define H_READ_RDMA 0x12c
#define H_MULTICAST_CTRL 0x130
#define H_SET_XDABR 0x134
#define H_STUFF_TCE 0x138
#define H_PUT_TCE_INDIRECT 0x13c
#define H_PUT_RTCE_INDIRECT 0x140
#define H_CHANGE_LOGICAL_LAN_MAC 0x14c
#define H_VTERM_PARTNER_INFO 0x150
#define H_REGISTER_VTERM 0x154
#define H_FREE_VTERM 0x158
/* Reserved ....
#define H_RESET_EVENTS 0x15c
#define H_ALLOC_RESOURCE 0x160
#define H_FREE_RESOURCE 0x164
#define H_MODIFY_QP 0x168
#define H_QUERY_QP 0x16c
#define H_REREGISTER_PMR 0x170
#define H_REGISTER_SMR 0x174
#define H_QUERY_MR 0x178
#define H_QUERY_MW 0x17c
#define H_QUERY_HCA 0x180
#define H_QUERY_PORT 0x184
#define H_MODIFY_PORT 0x188
#define H_DEFINE_AQP1 0x18c
#define H_GET_TRACE_BUFFER 0x190
#define H_DEFINE_AQP0 0x194
#define H_RESIZE_MR 0x198
#define H_ATTACH_MCQP 0x19c
#define H_DETACH_MCQP 0x1a0
#define H_CREATE_RPT 0x1a4
#define H_REMOVE_RPT 0x1a8
#define H_REGISTER_RPAGES 0x1ac
#define H_DISABLE_AND_GETC 0x1b0
#define H_ERROR_DATA 0x1b4
#define H_GET_HCA_INFO 0x1b8
#define H_GET_PERF_COUNT 0x1bc
#define H_MANAGE_TRACE 0x1c0
.... */
#define H_FREE_LOGICAL_LAN_BUFFER 0x1d4
#define H_POLL_PENDING 0x1d8
/* Reserved ....
#define H_QUERY_INT_STATE 0x1e4
.... */
#define H_LIOBN_ATTRIBUTES 0x240
#define H_ILLAN_ATTRIBUTES 0x244
#define H_REMOVE_RTCE 0x24c
/* Reserved ...
#define H_MODIFY_HEA_QP 0x250
#define H_QUERY_HEA_QP 0x254
#define H_QUERY_HEA 0x258
#define H_QUERY_HEA_PORT 0x25c
#define H_MODIFY_HEA_PORT 0x260
#define H_REG_BCMC 0x264
#define H_DEREG_BCMC 0x268
#define H_REGISTER_HEA_RPAGES 0x26c
#define H_DISABLE_AND_GET_HEA 0x270
#define H_GET_HEA_INFO 0x274
#define H_ALLOC_HEA_RESOURCE 0x278
#define H_ADD_CONN 0x284
#define H_DEL_CONN 0x288
... */
#define H_JOIN 0x298
#define H_DONOR_OPERATION 0x29c
#define H_VASI_SIGNAL 0x2a0
#define H_VASI_STATE 0x2a4
#define H_VIOCTL 0x2a8
#define H_VRMASD 0x2ac
#define H_ENABLE_CRQ 0x2b0
/* Reserved ...
#define H_GET_EM_PARMS 0x2b8
... */
#define H_VPM_STAT 0x2bc
#define H_SET_MPP 0x2d0
#define H_GET_MPP 0x2d4
#define MAX_HCALL_OPCODE H_GET_MPP
int64_t phyp_hcall(uint64_t opcode, ...);
int64_t phyp_pft_hcall(uint64_t opcode, uint64_t flags, uint64_t pteidx,
uint64_t pte_hi, uint64_t pte_lo, uint64_t *pteidx_out, uint64_t *ptelo_out,
uint64_t *r6);
#endif /* _PSERIES_PHYP_HVCALL_H_ */

420
sys/powerpc/pseries/phyp_console.c Normal file
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@ -0,0 +1,420 @@
/*-
* Copyright (C) 2011 by 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 TOOLS GMBH 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/priv.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/cons.h>
#include <sys/tty.h>
#include <machine/bus.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/uart/uart.h>
#include <dev/uart/uart_cpu.h>
#include <dev/uart/uart_bus.h>
#include "phyp-hvcall.h"
#include "uart_if.h"
struct uart_phyp_softc {
device_t dev;
phandle_t node;
int vtermid;
struct tty *tp;
struct resource *irqres;
int irqrid;
struct callout callout;
void *sc_icookie;
int polltime;
struct mtx sc_mtx;
int protocol;
union {
uint64_t u64[2];
char str[16];
} phyp_inbuf;
uint64_t inbuflen;
uint8_t outseqno;
};
static struct uart_phyp_softc *console_sc = NULL;
#if defined(KDB)
static int alt_break_state;
#endif
enum {
HVTERM1, HVTERMPROT
};
#define VS_DATA_PACKET_HEADER 0xff
#define VS_CONTROL_PACKET_HEADER 0xfe
#define VSV_SET_MODEM_CTL 0x01
#define VSV_MODEM_CTL_UPDATE 0x02
#define VSV_RENEGOTIATE_CONNECTION 0x03
#define VS_QUERY_PACKET_HEADER 0xfd
#define VSV_SEND_VERSION_NUMBER 0x01
#define VSV_SEND_MODEM_CTL_STATUS 0x02
#define VS_QUERY_RESPONSE_PACKET_HEADER 0xfc
static int uart_phyp_probe(device_t dev);
static int uart_phyp_attach(device_t dev);
static void uart_phyp_intr(void *v);
static device_method_t uart_phyp_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, uart_phyp_probe),
DEVMETHOD(device_attach, uart_phyp_attach),
DEVMETHOD_END
};
static driver_t uart_phyp_driver = {
"uart",
uart_phyp_methods,
sizeof(struct uart_phyp_softc),
};
DRIVER_MODULE(uart_phyp, vdevice, uart_phyp_driver, uart_devclass, 0, 0);
static cn_probe_t uart_phyp_cnprobe;
static cn_init_t uart_phyp_cninit;
static cn_term_t uart_phyp_cnterm;
static cn_getc_t uart_phyp_cngetc;
static cn_putc_t uart_phyp_cnputc;
static cn_grab_t uart_phyp_cngrab;
static cn_ungrab_t uart_phyp_cnungrab;
CONSOLE_DRIVER(uart_phyp);
static void uart_phyp_ttyoutwakeup(struct tty *tp);
static struct ttydevsw uart_phyp_tty_class = {
.tsw_flags = TF_INITLOCK|TF_CALLOUT,
.tsw_outwakeup = uart_phyp_ttyoutwakeup,
};
static int
uart_phyp_probe_node(struct uart_phyp_softc *sc)
{
phandle_t node = sc->node;
uint32_t reg;
char buf[64];
sc->inbuflen = 0;
sc->outseqno = 0;
if (OF_getprop(node, "name", buf, sizeof(buf)) <= 0)
return (ENXIO);
if (strcmp(buf, "vty") != 0)
return (ENXIO);
if (OF_getprop(node, "device_type", buf, sizeof(buf)) <= 0)
return (ENXIO);
if (strcmp(buf, "serial") != 0)
return (ENXIO);
reg = -1;
OF_getprop(node, "reg", &reg, sizeof(reg));
if (reg == -1)
return (ENXIO);
sc->node = node;
if (OF_getprop(node, "compatible", buf, sizeof(buf)) <= 0)
return (ENXIO);
if (strcmp(buf, "hvterm1") == 0) {
sc->protocol = HVTERM1;
return (0);
} else if (strcmp(buf, "hvterm-protocol") == 0) {
sc->protocol = HVTERMPROT;
return (0);
}
return (ENXIO);
}
static int
uart_phyp_probe(device_t dev)
{
const char *name;
struct uart_phyp_softc sc;
int err;
name = ofw_bus_get_name(dev);
if (name == NULL || strcmp(name, "vty") != 0)
return (ENXIO);
sc.node = ofw_bus_get_node(dev);
err = uart_phyp_probe_node(&sc);
if (err != 0)
return (err);
device_set_desc(dev, "POWER Hypervisor Virtual Serial Port");
return (err);
}
static void
uart_phyp_cnprobe(struct consdev *cp)
{
char buf[64];
ihandle_t stdout;
phandle_t input, opts, chosen;
static struct uart_phyp_softc sc;
if ((opts = OF_finddevice("/options")) == -1)
goto fail;
if ((chosen = OF_finddevice("/chosen")) == -1)
goto fail;
/* Check if OF has an active stdin/stdout */
input = -1;
if (OF_getprop(chosen, "stdout", &stdout,
sizeof(stdout)) == sizeof(stdout) && stdout != 0)
input = OF_instance_to_package(stdout);
if (input == -1)
goto fail;
if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1)
goto fail;
if (strcmp(buf, "serial") != 0)
goto fail;
sc.node = input;
if (uart_phyp_probe_node(&sc) != 0)
goto fail;
mtx_init(&sc.sc_mtx, "uart_phyp", NULL, MTX_SPIN | MTX_QUIET |
MTX_NOWITNESS);
cp->cn_pri = CN_NORMAL;
console_sc = &sc;
return;
fail:
cp->cn_pri = CN_DEAD;
return;
}
static int
uart_phyp_attach(device_t dev)
{
struct uart_phyp_softc *sc;
int unit;
sc = device_get_softc(dev);
sc->dev = dev;
sc->node = ofw_bus_get_node(dev);
uart_phyp_probe_node(sc);
unit = device_get_unit(dev);
sc->tp = tty_alloc(&uart_phyp_tty_class, sc);
mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL,
MTX_SPIN | MTX_QUIET | MTX_NOWITNESS);
if (console_sc != NULL && console_sc->vtermid == sc->vtermid) {
sc->outseqno = console_sc->outseqno;
console_sc = sc;
sprintf(uart_phyp_consdev.cn_name, "ttyu%r", unit);
tty_init_console(sc->tp, 0);
}
sc->irqrid = 0;
#ifdef NOTYET
sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqrid,
RF_ACTIVE | RF_SHAREABLE);
#else
sc->irqres = NULL;
#endif
if (sc->irqres != NULL) {
bus_setup_intr(dev, sc->irqres, INTR_TYPE_TTY | INTR_MPSAFE,
NULL, uart_phyp_intr, sc, &sc->sc_icookie);
} else {
callout_init(&sc->callout, CALLOUT_MPSAFE);
sc->polltime = hz / 20;
if (sc->polltime < 1)
sc->polltime = 1;
callout_reset(&sc->callout, sc->polltime, uart_phyp_intr, sc);
}
tty_makedev(sc->tp, NULL, "u%r", unit);
return (0);
}
static void
uart_phyp_cninit(struct consdev *cp)
{
strcpy(cp->cn_name, "phypcons");
}
static void
uart_phyp_cnterm(struct consdev *cp)
{
}
static int
uart_phyp_get(struct uart_phyp_softc *sc, void *buffer, size_t bufsize)
{
int err;
uart_lock(&sc->sc_mtx);
if (sc->inbuflen == 0) {
err = phyp_pft_hcall(H_GET_TERM_CHAR, sc->vtermid,
0, 0, 0, &sc->inbuflen, &sc->phyp_inbuf.u64[0],
&sc->phyp_inbuf.u64[1]);
if (err != H_SUCCESS) {
uart_unlock(&sc->sc_mtx);
return (-1);
}
}
if (sc->inbuflen == 0) {
uart_unlock(&sc->sc_mtx);
return (0);
}
if (bufsize > sc->inbuflen)
bufsize = sc->inbuflen;
memcpy(buffer, sc->phyp_inbuf.str, bufsize);
sc->inbuflen -= bufsize;
if (sc->inbuflen > 0)
memmove(&sc->phyp_inbuf.str[0], &sc->phyp_inbuf.str[bufsize],
sc->inbuflen);
uart_unlock(&sc->sc_mtx);
return (bufsize);
}
static int
uart_phyp_put(struct uart_phyp_softc *sc, void *buffer, size_t bufsize)
{
uint16_t seqno;
uint64_t len = 0;
union {
uint64_t u64;
char bytes[8];
} cbuf;
uart_lock(&sc->sc_mtx);
switch (sc->protocol) {
case HVTERM1:
if (bufsize > 8)
bufsize = 8;
memcpy(&cbuf, buffer, bufsize);
len = bufsize;
break;
case HVTERMPROT:
if (bufsize > 4)
bufsize = 4;
seqno = sc->outseqno++;
cbuf.bytes[0] = VS_DATA_PACKET_HEADER;
cbuf.bytes[1] = 4 + bufsize; /* total length */
cbuf.bytes[2] = (seqno >> 8) & 0xff;
cbuf.bytes[3] = seqno & 0xff;
memcpy(&cbuf.bytes[4], buffer, bufsize);
len = 4 + bufsize;
break;
}
phyp_hcall(H_PUT_TERM_CHAR, sc->vtermid, len, cbuf.u64, 0);
uart_unlock(&sc->sc_mtx);
return (bufsize);
}
static int
uart_phyp_cngetc(struct consdev *cp)
{
unsigned char c;
int retval;
retval = uart_phyp_get(console_sc, &c, 1);
if (retval != 1)
return (-1);
#if defined(KDB)
kdb_alt_break(c, &alt_break_state);
#endif
return (c);
}
static void
uart_phyp_cnputc(struct consdev *cp, int c)
{
unsigned char ch = c;
uart_phyp_put(console_sc, &ch, 1);
}
static void
uart_phyp_cngrab(struct consdev *cp)
{
}
static void
uart_phyp_cnungrab(struct consdev *cp)
{
}
static void
uart_phyp_ttyoutwakeup(struct tty *tp)
{
struct uart_phyp_softc *sc;
char buffer[8];
int len;
sc = tty_softc(tp);
while ((len = ttydisc_getc(tp, buffer, sizeof(buffer))) != 0)
uart_phyp_put(sc, buffer, len);
}
static void
uart_phyp_intr(void *v)
{
struct uart_phyp_softc *sc = v;
struct tty *tp = sc->tp;
unsigned char c;
int len;
tty_lock(tp);
while ((len = uart_phyp_get(sc, &c, 1)) > 0)
ttydisc_rint(tp, c, 0);
ttydisc_rint_done(tp);
tty_unlock(tp);
if (sc->irqres == NULL)
callout_reset(&sc->callout, sc->polltime, uart_phyp_intr, sc);
}

411
sys/powerpc/pseries/platform_chrp.c Normal file
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/*-
* Copyright (c) 2008 Marcel Moolenaar
* Copyright (c) 2009 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/cdefs.h>
__FBSDID("$FreeBSD$");
#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/smp.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/cpu.h>
#include <machine/hid.h>
#include <machine/platformvar.h>
#include <machine/pmap.h>
#include <machine/rtas.h>
#include <machine/smp.h>
#include <machine/spr.h>
#include <machine/trap_aim.h>
#include <dev/ofw/openfirm.h>
#include <machine/ofw_machdep.h>
#include "platform_if.h"
#ifdef SMP
extern void *ap_pcpu;
#endif
#ifdef __powerpc64__
static uint8_t splpar_vpa[640] __aligned(64);
#endif
static vm_offset_t realmaxaddr = VM_MAX_ADDRESS;
static int chrp_probe(platform_t);
static int chrp_attach(platform_t);
void chrp_mem_regions(platform_t, struct mem_region **phys, int *physsz,
struct mem_region **avail, int *availsz);
static vm_offset_t chrp_real_maxaddr(platform_t);
static u_long chrp_timebase_freq(platform_t, struct cpuref *cpuref);
static int chrp_smp_first_cpu(platform_t, struct cpuref *cpuref);
static int chrp_smp_next_cpu(platform_t, struct cpuref *cpuref);
static int chrp_smp_get_bsp(platform_t, struct cpuref *cpuref);
static void chrp_smp_ap_init(platform_t);
#ifdef SMP
static int chrp_smp_start_cpu(platform_t, struct pcpu *cpu);
static struct cpu_group *chrp_smp_topo(platform_t plat);
#endif
static void chrp_reset(platform_t);
#ifdef __powerpc64__
#include "phyp-hvcall.h"
static void phyp_cpu_idle(sbintime_t sbt);
#endif
static platform_method_t chrp_methods[] = {
PLATFORMMETHOD(platform_probe, chrp_probe),
PLATFORMMETHOD(platform_attach, chrp_attach),
PLATFORMMETHOD(platform_mem_regions, chrp_mem_regions),
PLATFORMMETHOD(platform_real_maxaddr, chrp_real_maxaddr),
PLATFORMMETHOD(platform_timebase_freq, chrp_timebase_freq),
PLATFORMMETHOD(platform_smp_ap_init, chrp_smp_ap_init),
PLATFORMMETHOD(platform_smp_first_cpu, chrp_smp_first_cpu),
PLATFORMMETHOD(platform_smp_next_cpu, chrp_smp_next_cpu),
PLATFORMMETHOD(platform_smp_get_bsp, chrp_smp_get_bsp),
#ifdef SMP
PLATFORMMETHOD(platform_smp_start_cpu, chrp_smp_start_cpu),
PLATFORMMETHOD(platform_smp_topo, chrp_smp_topo),
#endif
PLATFORMMETHOD(platform_reset, chrp_reset),
{ 0, 0 }
};
static platform_def_t chrp_platform = {
"chrp",
chrp_methods,
0
};
PLATFORM_DEF(chrp_platform);
static int
chrp_probe(platform_t plat)
{
if (OF_finddevice("/memory") != -1 || OF_finddevice("/memory@0") != -1)
return (BUS_PROBE_GENERIC);
return (ENXIO);
}
static int
chrp_attach(platform_t plat)
{
#ifdef __powerpc64__
/* XXX: check for /rtas/ibm,hypertas-functions? */
if (!(mfmsr() & PSL_HV)) {
struct mem_region *phys, *avail;
int nphys, navail;
mem_regions(&phys, &nphys, &avail, &navail);
realmaxaddr = phys[0].mr_size;
pmap_mmu_install("mmu_phyp", BUS_PROBE_SPECIFIC);
cpu_idle_hook = phyp_cpu_idle;
/* Set up important VPA fields */
bzero(splpar_vpa, sizeof(splpar_vpa));
splpar_vpa[4] = (uint8_t)((sizeof(splpar_vpa) >> 8) & 0xff);
splpar_vpa[5] = (uint8_t)(sizeof(splpar_vpa) & 0xff);
splpar_vpa[0xba] = 1; /* Maintain FPRs */
splpar_vpa[0xbb] = 1; /* Maintain PMCs */
splpar_vpa[0xfc] = 0xff; /* Maintain full SLB */
splpar_vpa[0xfd] = 0xff;
splpar_vpa[0xff] = 1; /* Maintain Altivec */
mb();
/* Set up hypervisor CPU stuff */
chrp_smp_ap_init(plat);
}
#endif
return (0);
}
void
chrp_mem_regions(platform_t plat, struct mem_region **phys, int *physsz,
struct mem_region **avail, int *availsz)
{
ofw_mem_regions(phys,physsz,avail,availsz);
}
static vm_offset_t
chrp_real_maxaddr(platform_t plat)
{
return (realmaxaddr);
}
static u_long
chrp_timebase_freq(platform_t plat, struct cpuref *cpuref)
{
phandle_t phandle;
int32_t ticks = -1;
phandle = cpuref->cr_hwref;
OF_getprop(phandle, "timebase-frequency", &ticks, sizeof(ticks));
if (ticks <= 0)
panic("Unable to determine timebase frequency!");
return (ticks);
}
static int
chrp_smp_first_cpu(platform_t plat, struct cpuref *cpuref)
{
char buf[8];
phandle_t cpu, dev, root;
int res, cpuid;
root = OF_peer(0);
dev = OF_child(root);
while (dev != 0) {
res = OF_getprop(dev, "name", buf, sizeof(buf));
if (res > 0 && strcmp(buf, "cpus") == 0)
break;
dev = OF_peer(dev);
}
if (dev == 0) {
/*
* psim doesn't have a name property on the /cpus node,
* but it can be found directly
*/
dev = OF_finddevice("/cpus");
if (dev == 0)
return (ENOENT);
}
cpu = OF_child(dev);
while (cpu != 0) {
res = OF_getprop(cpu, "device_type", buf, sizeof(buf));
if (res > 0 && strcmp(buf, "cpu") == 0)
break;
cpu = OF_peer(cpu);
}
if (cpu == 0)
return (ENOENT);
cpuref->cr_hwref = cpu;
res = OF_getprop(cpu, "ibm,ppc-interrupt-server#s", &cpuid,
sizeof(cpuid));
if (res <= 0)
res = OF_getprop(cpu, "reg", &cpuid, sizeof(cpuid));
if (res <= 0)
cpuid = 0;
cpuref->cr_cpuid = cpuid;
return (0);
}
static int
chrp_smp_next_cpu(platform_t plat, struct cpuref *cpuref)
{
char buf[8];
phandle_t cpu;
int i, res, cpuid;
/* Check for whether it should be the next thread */
res = OF_getproplen(cpuref->cr_hwref, "ibm,ppc-interrupt-server#s");
if (res > 0) {
cell_t interrupt_servers[res/sizeof(cell_t)];
OF_getprop(cpuref->cr_hwref, "ibm,ppc-interrupt-server#s",
interrupt_servers, res);
for (i = 0; i < res/sizeof(cell_t) - 1; i++) {
if (interrupt_servers[i] == cpuref->cr_cpuid) {
cpuref->cr_cpuid = interrupt_servers[i+1];
return (0);
}
}
}
/* Next CPU core/package */
cpu = OF_peer(cpuref->cr_hwref);
while (cpu != 0) {
res = OF_getprop(cpu, "device_type", buf, sizeof(buf));
if (res > 0 && strcmp(buf, "cpu") == 0)
break;
cpu = OF_peer(cpu);
}
if (cpu == 0)
return (ENOENT);
cpuref->cr_hwref = cpu;
res = OF_getprop(cpu, "ibm,ppc-interrupt-server#s", &cpuid,
sizeof(cpuid));
if (res <= 0)
res = OF_getprop(cpu, "reg", &cpuid, sizeof(cpuid));
if (res <= 0)
cpuid = 0;
cpuref->cr_cpuid = cpuid;
return (0);
}
static int
chrp_smp_get_bsp(platform_t plat, struct cpuref *cpuref)
{
ihandle_t inst;
phandle_t bsp, chosen;
int res, cpuid;
chosen = OF_finddevice("/chosen");
if (chosen == 0)
return (ENXIO);
res = OF_getprop(chosen, "cpu", &inst, sizeof(inst));
if (res < 0)
return (ENXIO);
bsp = OF_instance_to_package(inst);
/* Pick the primary thread. Can it be any other? */
cpuref->cr_hwref = bsp;
res = OF_getprop(bsp, "ibm,ppc-interrupt-server#s", &cpuid,
sizeof(cpuid));
if (res <= 0)
res = OF_getprop(bsp, "reg", &cpuid, sizeof(cpuid));
if (res <= 0)
cpuid = 0;
cpuref->cr_cpuid = cpuid;
return (0);
}
#ifdef SMP
static int
chrp_smp_start_cpu(platform_t plat, struct pcpu *pc)
{
cell_t start_cpu;
int result, err, timeout;
if (!rtas_exists()) {
printf("RTAS uninitialized: unable to start AP %d\n",
pc->pc_cpuid);
return (ENXIO);
}
start_cpu = rtas_token_lookup("start-cpu");
if (start_cpu == -1) {
printf("RTAS unknown method: unable to start AP %d\n",
pc->pc_cpuid);
return (ENXIO);
}
ap_pcpu = pc;
powerpc_sync();
result = rtas_call_method(start_cpu, 3, 1, pc->pc_cpuid, EXC_RST, pc,
&err);
if (result < 0 || err != 0) {
printf("RTAS error (%d/%d): unable to start AP %d\n",
result, err, pc->pc_cpuid);
return (ENXIO);
}
timeout = 10000;
while (!pc->pc_awake && timeout--)
DELAY(100);
return ((pc->pc_awake) ? 0 : EBUSY);
}
static struct cpu_group *
chrp_smp_topo(platform_t plat)
{
struct pcpu *pc, *last_pc;
int i, ncores, ncpus;
ncores = ncpus = 0;
last_pc = NULL;
for (i = 0; i <= mp_maxid; i++) {
pc = pcpu_find(i);
if (pc == NULL)
continue;
if (last_pc == NULL || pc->pc_hwref != last_pc->pc_hwref)
ncores++;
last_pc = pc;
ncpus++;
}
if (ncpus % ncores != 0) {
printf("WARNING: Irregular SMP topology. Performance may be "
"suboptimal (%d CPUS, %d cores)\n", ncpus, ncores);
return (smp_topo_none());
}
/* Don't do anything fancier for non-threaded SMP */
if (ncpus == ncores)
return (smp_topo_none());
return (smp_topo_1level(CG_SHARE_L1, ncpus / ncores, CG_FLAG_SMT));
}
#endif
static void
chrp_reset(platform_t platform)
{
OF_reboot();
}
#ifdef __powerpc64__
static void
phyp_cpu_idle(sbintime_t sbt)
{
#ifdef NOTYET /* Causes hangs on QEMU */
phyp_hcall(H_CEDE);
#endif
}
static void
chrp_smp_ap_init(platform_t platform)
{
if (!(mfmsr() & PSL_HV)) {
/* Set interrupt priority */
phyp_hcall(H_CPPR, 0xff);
/* Register VPA */
phyp_hcall(H_REGISTER_VPA, 1UL, PCPU_GET(cpuid), splpar_vpa);
}
}
#else
static void
chrp_smp_ap_init(platform_t platform)
{
}
#endif

239
sys/powerpc/pseries/plpar_iommu.c Normal file
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/*-
* Copyright (c) 2013, Nathan Whitehorn <nwhitehorn@FreeBSD.org>
* 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 unmodified, 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/libkern.h>
#include <sys/module.h>
#include <sys/vmem.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <powerpc/pseries/phyp-hvcall.h>
#include <powerpc/pseries/plpar_iommu.h>
MALLOC_DEFINE(M_PHYPIOMMU, "iommu", "IOMMU data for PAPR LPARs");
struct papr_iommu_map {
uint32_t iobn;
vmem_t *vmem;
struct papr_iommu_map *next;
};
static SLIST_HEAD(iommu_maps, iommu_map) iommu_map_head =
SLIST_HEAD_INITIALIZER(iommu_map_head);
static int papr_supports_stuff_tce = -1;
struct iommu_map {
uint32_t iobn;
vmem_t *vmem;
SLIST_ENTRY(iommu_map) entries;
};
struct dma_window {
struct iommu_map *map;
bus_addr_t start;
bus_addr_t end;
};
int
phyp_iommu_set_dma_tag(device_t dev, device_t child, bus_dma_tag_t tag)
{
device_t p;
phandle_t node;
cell_t dma_acells, dma_scells, dmawindow[5];
struct iommu_map *i;
for (p = child; p != NULL; p = device_get_parent(p)) {
if (ofw_bus_has_prop(p, "ibm,my-dma-window"))
break;
if (ofw_bus_has_prop(p, "ibm,dma-window"))
break;
}
if (p == NULL)
return (ENXIO);
node = ofw_bus_get_node(p);
if (OF_getprop(node, "ibm,#dma-size-cells", &dma_scells,
sizeof(cell_t)) <= 0)
OF_searchprop(node, "#size-cells", &dma_scells, sizeof(cell_t));
if (OF_getprop(node, "ibm,#dma-address-cells", &dma_acells,
sizeof(cell_t)) <= 0)
OF_searchprop(node, "#address-cells", &dma_acells,
sizeof(cell_t));
if (ofw_bus_has_prop(p, "ibm,my-dma-window"))
OF_getprop(node, "ibm,my-dma-window", dmawindow,
sizeof(cell_t)*(dma_scells + dma_acells + 1));
else
OF_getprop(node, "ibm,dma-window", dmawindow,
sizeof(cell_t)*(dma_scells + dma_acells + 1));
struct dma_window *window = malloc(sizeof(struct dma_window),
M_PHYPIOMMU, M_WAITOK);
if (dma_acells == 1)
window->start = dmawindow[1];
else
window->start = ((uint64_t)(dmawindow[1]) << 32) | dmawindow[2];
if (dma_scells == 1)
window->end = window->start + dmawindow[dma_acells + 1];
else
window->end = window->start +
(((uint64_t)(dmawindow[dma_acells + 1]) << 32) |
dmawindow[dma_acells + 2]);
window->map = NULL;
SLIST_FOREACH(i, &iommu_map_head, entries) {
if (i->iobn == dmawindow[0]) {
window->map = i;
break;
}
}
if (window->map == NULL) {
window->map = malloc(sizeof(struct iommu_map), M_PHYPIOMMU,
M_WAITOK);
window->map->iobn = dmawindow[0];
/*
* Allocate IOMMU range beginning at PAGE_SIZE. Some drivers
* (em(4), for example) do not like getting mappings at 0.
*/
window->map->vmem = vmem_create("IOMMU mappings", PAGE_SIZE,
trunc_page(VMEM_ADDR_MAX) - PAGE_SIZE, PAGE_SIZE, 0,
M_BESTFIT | M_NOWAIT);
}
/*
* Check experimentally whether we can use H_STUFF_TCE. It is required
* by the spec but some firmware (e.g. QEMU) does not actually support
* it
*/
if (papr_supports_stuff_tce == -1)
papr_supports_stuff_tce = !(phyp_hcall(H_STUFF_TCE,
window->map->iobn, 0, 0, 0) == H_FUNCTION);
bus_dma_tag_set_iommu(tag, dev, window);
return (0);
}
int
phyp_iommu_map(device_t dev, bus_dma_segment_t *segs, int *nsegs,
bus_addr_t min, bus_addr_t max, bus_size_t alignment, bus_addr_t boundary,
void *cookie)
{
struct dma_window *window = cookie;
bus_addr_t minaddr, maxaddr;
bus_addr_t alloced;
bus_size_t allocsize;
int error, i, j;
uint64_t tce;
minaddr = window->start;
maxaddr = window->end;
/* XXX: handle exclusion range in a more useful way */
if (min < maxaddr)
maxaddr = min;
/* XXX: consolidate segs? */
for (i = 0; i < *nsegs; i++) {
allocsize = round_page(segs[i].ds_len +
(segs[i].ds_addr & PAGE_MASK));
error = vmem_xalloc(window->map->vmem, allocsize,
(alignment < PAGE_SIZE) ? PAGE_SIZE : alignment, 0,
boundary, minaddr, maxaddr, M_BESTFIT | M_NOWAIT, &alloced);
if (error != 0) {
panic("VMEM failure: %d\n", error);
return (error);
}
KASSERT(alloced % PAGE_SIZE == 0, ("Alloc not page aligned"));
KASSERT((alloced + (segs[i].ds_addr & PAGE_MASK)) %
alignment == 0,
("Allocated segment does not match alignment constraint"));
tce = trunc_page(segs[i].ds_addr);
tce |= 0x3; /* read/write */
if (papr_supports_stuff_tce) {
error = phyp_hcall(H_STUFF_TCE, window->map->iobn,
alloced, tce, allocsize/PAGE_SIZE);
} else {
for (j = 0; j < allocsize; j += PAGE_SIZE)
error = phyp_hcall(H_PUT_TCE, window->map->iobn,
alloced + j, tce + j);
}
segs[i].ds_addr = alloced + (segs[i].ds_addr & PAGE_MASK);
KASSERT(segs[i].ds_addr > 0, ("Address needs to be positive"));
KASSERT(segs[i].ds_addr + segs[i].ds_len < maxaddr,
("Address not in range"));
if (error < 0) {
panic("IOMMU mapping error: %d\n", error);
return (ENOMEM);
}
}
return (0);
}
int
phyp_iommu_unmap(device_t dev, bus_dma_segment_t *segs, int nsegs, void *cookie)
{
struct dma_window *window = cookie;
bus_addr_t pageround;
bus_size_t roundedsize;
int i;
bus_addr_t j;
for (i = 0; i < nsegs; i++) {
pageround = trunc_page(segs[i].ds_addr);
roundedsize = round_page(segs[i].ds_len +
(segs[i].ds_addr & PAGE_MASK));
if (papr_supports_stuff_tce) {
phyp_hcall(H_STUFF_TCE, window->map->iobn, pageround, 0,
roundedsize/PAGE_SIZE);
} else {
for (j = 0; j < roundedsize; j += PAGE_SIZE)
phyp_hcall(H_PUT_TCE, window->map->iobn,
pageround + j, 0);
}
vmem_xfree(window->map->vmem, pageround, roundedsize);
}
return (0);
}

43
sys/powerpc/pseries/plpar_iommu.h Normal file
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/*-
* Copyright (c) 2013, Nathan Whitehorn <nwhitehorn@FreeBSD.org>
* 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 unmodified, 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.
*
* $FreeBSD$
*/
#ifndef _PSERIES_PHYP_IOMMU_H_
#define _PSERIES_PHYP_IOMMU_H_
#include <sys/types.h>
#include <sys/bus_dma.h>
int phyp_iommu_set_dma_tag(device_t dev, device_t child, bus_dma_tag_t tag);
int phyp_iommu_map(device_t dev, bus_dma_segment_t *segs, int *nsegs,
bus_addr_t min, bus_addr_t max, bus_size_t alignment, bus_addr_t boundary,
void *cookie);
int phyp_iommu_unmap(device_t dev, bus_dma_segment_t *segs, int nsegs,
void *cookie);
#endif

173
sys/powerpc/pseries/rtas_dev.c Normal file
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/*-
* Copyright (c) 2011 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/clock.h>
#include <sys/cpu.h>
#include <sys/kernel.h>
#include <sys/reboot.h>
#include <sys/sysctl.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/openfirm.h>
#include <machine/rtas.h>
#include "clock_if.h"
static int rtasdev_probe(device_t);
static int rtasdev_attach(device_t);
/* clock interface */
static int rtas_gettime(device_t dev, struct timespec *ts);
static int rtas_settime(device_t dev, struct timespec *ts);
static void rtas_shutdown(void *arg, int howto);
static device_method_t rtasdev_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, rtasdev_probe),
DEVMETHOD(device_attach, rtasdev_attach),
/* clock interface */
DEVMETHOD(clock_gettime, rtas_gettime),
DEVMETHOD(clock_settime, rtas_settime),
{ 0, 0 },
};
static driver_t rtasdev_driver = {
"rtas",
rtasdev_methods,
0
};
static devclass_t rtasdev_devclass;
DRIVER_MODULE(rtasdev, nexus, rtasdev_driver, rtasdev_devclass, 0, 0);
static int
rtasdev_probe(device_t dev)
{
const char *name = ofw_bus_get_name(dev);
if (strcmp(name, "rtas") != 0)
return (ENXIO);
if (!rtas_exists())
return (ENXIO);
device_set_desc(dev, "Run-Time Abstraction Services");
return (0);
}
static int
rtasdev_attach(device_t dev)
{
if (rtas_token_lookup("get-time-of-day") != -1)
clock_register(dev, 2000);
EVENTHANDLER_REGISTER(shutdown_final, rtas_shutdown, NULL,
SHUTDOWN_PRI_LAST);
return (0);
}
static int
rtas_gettime(device_t dev, struct timespec *ts) {
struct clocktime ct;
cell_t tod[8];
cell_t token;
int error;
token = rtas_token_lookup("get-time-of-day");
if (token == -1)
return (ENXIO);
error = rtas_call_method(token, 0, 8, &tod[0], &tod[1], &tod[2],
&tod[3], &tod[4], &tod[5], &tod[6], &tod[7]);
if (error < 0)
return (ENXIO);
if (tod[0] != 0)
return ((tod[0] == -1) ? ENXIO : EAGAIN);
ct.year = tod[1];
ct.mon = tod[2];
ct.day = tod[3];
ct.hour = tod[4];
ct.min = tod[5];
ct.sec = tod[6];
ct.nsec = tod[7];
return (clock_ct_to_ts(&ct, ts));
}
static int
rtas_settime(device_t dev, struct timespec *ts)
{
struct clocktime ct;
cell_t token, status;
int error;
token = rtas_token_lookup("set-time-of-day");
if (token == -1)
return (ENXIO);
clock_ts_to_ct(ts, &ct);
error = rtas_call_method(token, 7, 1, ct.year, ct.mon, ct.day, ct.hour,
ct.min, ct.sec, ct.nsec, &status);
if (error < 0)
return (ENXIO);
if (status != 0)
return (((int)status < 0) ? ENXIO : EAGAIN);
return (0);
}
static void
rtas_shutdown(void *arg, int howto)
{
cell_t token, status;
if (howto & RB_HALT) {
token = rtas_token_lookup("power-off");
if (token == -1)
return;
rtas_call_method(token, 2, 1, 0, 0, &status);
} else {
token = rtas_token_lookup("system-reboot");
if (token == -1)
return;
rtas_call_method(token, 0, 1, &status);
}
}

236
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/*-
* Copyright (c) 2011 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_pci.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <machine/bus.h>
#include <machine/intr_machdep.h>
#include <machine/md_var.h>
#include <machine/pio.h>
#include <machine/resource.h>
#include <machine/rtas.h>
#include <sys/rman.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <powerpc/ofw/ofw_pci.h>
#include <powerpc/pseries/plpar_iommu.h>
#include "pcib_if.h"
#include "iommu_if.h"
/*
* Device interface.
*/
static int rtaspci_probe(device_t);
static int rtaspci_attach(device_t);
/*
* pcib interface.
*/
static u_int32_t rtaspci_read_config(device_t, u_int, u_int, u_int,
u_int, int);
static void rtaspci_write_config(device_t, u_int, u_int, u_int,
u_int, u_int32_t, int);
/*
* IOMMU LPAR interface
*/
static bus_dma_tag_t rtaspci_get_dma_tag(device_t dev, device_t child);
/*
* Driver methods.
*/
static device_method_t rtaspci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, rtaspci_probe),
DEVMETHOD(device_attach, rtaspci_attach),
/* pcib interface */
DEVMETHOD(pcib_read_config, rtaspci_read_config),
DEVMETHOD(pcib_write_config, rtaspci_write_config),
/* IOMMU functions */
DEVMETHOD(bus_get_dma_tag, rtaspci_get_dma_tag),
#ifdef __powerpc64__
DEVMETHOD(iommu_map, phyp_iommu_map),
DEVMETHOD(iommu_unmap, phyp_iommu_unmap),
#endif
DEVMETHOD_END
};
struct rtaspci_softc {
struct ofw_pci_softc pci_sc;
bus_dma_tag_t dma_tag;
cell_t read_pci_config, write_pci_config;
cell_t ex_read_pci_config, ex_write_pci_config;
int sc_extended_config;
};
static devclass_t rtaspci_devclass;
DEFINE_CLASS_1(pcib, rtaspci_driver, rtaspci_methods,
sizeof(struct rtaspci_softc), ofw_pci_driver);
DRIVER_MODULE(rtaspci, nexus, rtaspci_driver, rtaspci_devclass, 0, 0);
static int
rtaspci_probe(device_t dev)
{
const char *type;
if (!rtas_exists())
return (ENXIO);
type = ofw_bus_get_type(dev);
if (OF_getproplen(ofw_bus_get_node(dev), "used-by-rtas") < 0)
return (ENXIO);
if (type == NULL || strcmp(type, "pci") != 0)
return (ENXIO);
device_set_desc(dev, "RTAS Host-PCI bridge");
return (BUS_PROBE_GENERIC);
}
static int
rtaspci_attach(device_t dev)
{
struct rtaspci_softc *sc;
sc = device_get_softc(dev);
sc->read_pci_config = rtas_token_lookup("read-pci-config");
sc->write_pci_config = rtas_token_lookup("write-pci-config");
sc->ex_read_pci_config = rtas_token_lookup("ibm,read-pci-config");
sc->ex_write_pci_config = rtas_token_lookup("ibm,write-pci-config");
sc->sc_extended_config = 0;
OF_getprop(ofw_bus_get_node(dev), "ibm,pci-config-space-type",
&sc->sc_extended_config, sizeof(sc->sc_extended_config));
bus_dma_tag_create(bus_get_dma_tag(dev),
1, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
NULL, NULL, BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED,
BUS_SPACE_MAXSIZE, 0, NULL, NULL, &sc->dma_tag);
#ifdef __powerpc64__
if (!(mfmsr() & PSL_HV))
phyp_iommu_set_dma_tag(dev, dev, sc->dma_tag);
#endif
return (ofw_pci_attach(dev));
}
static uint32_t
rtaspci_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
int width)
{
struct rtaspci_softc *sc;
uint32_t retval = 0xffffffff;
uint32_t config_addr;
int error, pcierror;
sc = device_get_softc(dev);
config_addr = ((bus & 0xff) << 16) | ((slot & 0x1f) << 11) |
((func & 0x7) << 8) | (reg & 0xff);
if (sc->sc_extended_config)
config_addr |= (reg & 0xf00) << 16;
if (sc->ex_read_pci_config != -1)
error = rtas_call_method(sc->ex_read_pci_config, 4, 2,
config_addr, sc->pci_sc.sc_pcir.phys_hi,
sc->pci_sc.sc_pcir.phys_mid, width, &pcierror, &retval);
else
error = rtas_call_method(sc->read_pci_config, 2, 2,
config_addr, width, &pcierror, &retval);
/* Sign-extend output */
switch (width) {
case 1:
retval = (int32_t)(int8_t)(retval);
break;
case 2:
retval = (int32_t)(int16_t)(retval);
break;
}
if (error < 0 || pcierror != 0)
retval = 0xffffffff;
return (retval);
}
static void
rtaspci_write_config(device_t dev, u_int bus, u_int slot, u_int func,
u_int reg, uint32_t val, int width)
{
struct rtaspci_softc *sc;
uint32_t config_addr;
int pcierror;
sc = device_get_softc(dev);
config_addr = ((bus & 0xff) << 16) | ((slot & 0x1f) << 11) |
((func & 0x7) << 8) | (reg & 0xff);
if (sc->sc_extended_config)
config_addr |= (reg & 0xf00) << 16;
if (sc->ex_write_pci_config != -1)
rtas_call_method(sc->ex_write_pci_config, 5, 1, config_addr,
sc->pci_sc.sc_pcir.phys_hi, sc->pci_sc.sc_pcir.phys_mid,
width, val, &pcierror);
else
rtas_call_method(sc->write_pci_config, 3, 1, config_addr,
width, val, &pcierror);
}
static bus_dma_tag_t
rtaspci_get_dma_tag(device_t dev, device_t child)
{
struct rtaspci_softc *sc;
sc = device_get_softc(dev);
return (sc->dma_tag);
}

202
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/*-
* Copyright (c) 2011 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <machine/bus.h>
#include <machine/intr_machdep.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
static int vdevice_probe(device_t);
static int vdevice_attach(device_t);
static const struct ofw_bus_devinfo *vdevice_get_devinfo(device_t dev,
device_t child);
static int vdevice_print_child(device_t dev, device_t child);
static struct resource_list *vdevice_get_resource_list (device_t, device_t);
/*
* VDevice devinfo
*/
struct vdevice_devinfo {
struct ofw_bus_devinfo mdi_obdinfo;
struct resource_list mdi_resources;
};
static device_method_t vdevice_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, vdevice_probe),
DEVMETHOD(device_attach, vdevice_attach),
/* Bus interface */
DEVMETHOD(bus_add_child, bus_generic_add_child),
DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
DEVMETHOD(bus_print_child, vdevice_print_child),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_get_resource_list, vdevice_get_resource_list),
/* ofw_bus interface */
DEVMETHOD(ofw_bus_get_devinfo, vdevice_get_devinfo),
DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
DEVMETHOD_END
};
static driver_t vdevice_driver = {
"vdevice",
vdevice_methods,
0
};
static devclass_t vdevice_devclass;
DRIVER_MODULE(vdevice, nexus, vdevice_driver, vdevice_devclass, 0, 0);
static int
vdevice_probe(device_t dev)
{
const char *name;
name = ofw_bus_get_name(dev);
if (name == NULL || strcmp(name, "vdevice") != 0)
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "IBM,vdevice"))
return (ENXIO);
device_set_desc(dev, "POWER Hypervisor Virtual Device Root");
return (0);
}
static int
vdevice_attach(device_t dev)
{
phandle_t root, child;
device_t cdev;
int icells, i, nintr, *intr;
phandle_t iparent;
struct vdevice_devinfo *dinfo;
root = ofw_bus_get_node(dev);
for (child = OF_child(root); child != 0; child = OF_peer(child)) {
dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
if (ofw_bus_gen_setup_devinfo(&dinfo->mdi_obdinfo,
child) != 0) {
free(dinfo, M_DEVBUF);
continue;
}
resource_list_init(&dinfo->mdi_resources);
if (OF_searchprop(child, "#interrupt-cells", &icells,
sizeof(icells)) <= 0)
icells = 2;
if (OF_getprop(child, "interrupt-parent", &iparent,
sizeof(iparent)) <= 0)
iparent = -1;
nintr = OF_getprop_alloc(child, "interrupts", sizeof(*intr),
(void **)&intr);
if (nintr > 0) {
for (i = 0; i < nintr; i += icells) {
u_int irq = intr[i];
if (iparent != -1)
irq = MAP_IRQ(iparent, intr[i]);
resource_list_add(&dinfo->mdi_resources,
SYS_RES_IRQ, i, irq, irq, i);
}
}
cdev = device_add_child(dev, NULL, -1);
if (cdev == NULL) {
device_printf(dev, "<%s>: device_add_child failed\n",
dinfo->mdi_obdinfo.obd_name);
ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo);
free(dinfo, M_DEVBUF);
continue;
}
device_set_ivars(cdev, dinfo);
}
return (bus_generic_attach(dev));
}
static const struct ofw_bus_devinfo *
vdevice_get_devinfo(device_t dev, device_t child)
{
return (device_get_ivars(child));
}
static int
vdevice_print_child(device_t dev, device_t child)
{
struct vdevice_devinfo *dinfo;
struct resource_list *rl;
int retval = 0;
dinfo = device_get_ivars(child);
rl = &dinfo->mdi_resources;
retval += bus_print_child_header(dev, child);
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
retval += bus_print_child_footer(dev, child);
return (retval);
}
static struct resource_list *
vdevice_get_resource_list (device_t dev, device_t child)
{
struct vdevice_devinfo *dinfo;
dinfo = device_get_ivars(child);
return (&dinfo->mdi_resources);
}

323
sys/powerpc/pseries/xics.c Normal file
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/*-
* Copyright 2011 Nathan Whitehorn
*
* 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/smp.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/intr_machdep.h>
#include <machine/md_var.h>
#include <machine/rtas.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include "phyp-hvcall.h"
#include "pic_if.h"
#define XICP_PRIORITY 5 /* Random non-zero number */
#define XICP_IPI 2
#define MAX_XICP_IRQS (1<<24) /* 24-bit XIRR field */
static int xicp_probe(device_t);
static int xicp_attach(device_t);
static int xics_probe(device_t);
static int xics_attach(device_t);
static void xicp_bind(device_t dev, u_int irq, cpuset_t cpumask);
static void xicp_dispatch(device_t, struct trapframe *);
static void xicp_enable(device_t, u_int, u_int);
static void xicp_eoi(device_t, u_int);
static void xicp_ipi(device_t, u_int);
static void xicp_mask(device_t, u_int);
static void xicp_unmask(device_t, u_int);
static device_method_t xicp_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, xicp_probe),
DEVMETHOD(device_attach, xicp_attach),
/* PIC interface */
DEVMETHOD(pic_bind, xicp_bind),
DEVMETHOD(pic_dispatch, xicp_dispatch),
DEVMETHOD(pic_enable, xicp_enable),
DEVMETHOD(pic_eoi, xicp_eoi),
DEVMETHOD(pic_ipi, xicp_ipi),
DEVMETHOD(pic_mask, xicp_mask),
DEVMETHOD(pic_unmask, xicp_unmask),
{ 0, 0 },
};
static device_method_t xics_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, xics_probe),
DEVMETHOD(device_attach, xics_attach),
{ 0, 0 },
};
struct xicp_softc {
struct mtx sc_mtx;
int ibm_int_on;
int ibm_int_off;
int ibm_get_xive;
int ibm_set_xive;
/* XXX: inefficient -- hash table? tree? */
struct {
int irq;
int vector;
} intvecs[256];
int nintvecs;
};
static driver_t xicp_driver = {
"xicp",
xicp_methods,
sizeof(struct xicp_softc)
};
static driver_t xics_driver = {
"xics",
xics_methods,
0
};
static devclass_t xicp_devclass;
static devclass_t xics_devclass;
EARLY_DRIVER_MODULE(xicp, nexus, xicp_driver, xicp_devclass, 0, 0,
BUS_PASS_INTERRUPT-1);
EARLY_DRIVER_MODULE(xics, nexus, xics_driver, xics_devclass, 0, 0,
BUS_PASS_INTERRUPT);
static int
xicp_probe(device_t dev)
{
if (ofw_bus_get_name(dev) == NULL || strcmp(ofw_bus_get_name(dev),
"interrupt-controller") != 0)
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "ibm,ppc-xicp"))
return (ENXIO);
device_set_desc(dev, "PAPR virtual interrupt controller");
return (BUS_PROBE_GENERIC);
}
static int
xics_probe(device_t dev)
{
if (ofw_bus_get_name(dev) == NULL || strcmp(ofw_bus_get_name(dev),
"interrupt-controller") != 0)
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "ibm,ppc-xics"))
return (ENXIO);
device_set_desc(dev, "PAPR virtual interrupt source");
return (BUS_PROBE_GENERIC);
}
static int
xicp_attach(device_t dev)
{
struct xicp_softc *sc = device_get_softc(dev);
phandle_t phandle = ofw_bus_get_node(dev);
mtx_init(&sc->sc_mtx, "XICP", NULL, MTX_DEF);
sc->nintvecs = 0;
sc->ibm_int_on = rtas_token_lookup("ibm,int-on");
sc->ibm_int_off = rtas_token_lookup("ibm,int-off");
sc->ibm_set_xive = rtas_token_lookup("ibm,set-xive");
sc->ibm_get_xive = rtas_token_lookup("ibm,get-xive");
if (OF_getproplen(phandle, "ibm,phandle") > 0)
OF_getprop(phandle, "ibm,phandle", &phandle, sizeof(phandle));
powerpc_register_pic(dev, phandle, MAX_XICP_IRQS,
1 /* Number of IPIs */, FALSE);
root_pic = dev;
return (0);
}
static int
xics_attach(device_t dev)
{
phandle_t phandle = ofw_bus_get_node(dev);
if (OF_getproplen(phandle, "ibm,phandle") > 0)
OF_getprop(phandle, "ibm,phandle", &phandle, sizeof(phandle));
/* The XICP (root PIC) will handle all our interrupts */
powerpc_register_pic(root_pic, phandle, MAX_XICP_IRQS,
1 /* Number of IPIs */, FALSE);
return (0);
}
/*
* PIC I/F methods.
*/
static void
xicp_bind(device_t dev, u_int irq, cpuset_t cpumask)
{
struct xicp_softc *sc = device_get_softc(dev);
cell_t status, cpu;
/*
* This doesn't appear to actually support affinity groups, so just
* use the first CPU.
*/
CPU_FOREACH(cpu)
if (CPU_ISSET(cpu, &cpumask)) break;
rtas_call_method(sc->ibm_set_xive, 3, 1, irq, cpu, XICP_PRIORITY,
&status);
}
static void
xicp_dispatch(device_t dev, struct trapframe *tf)
{
struct xicp_softc *sc;
uint64_t xirr, junk;
int i;
sc = device_get_softc(dev);
for (;;) {
/* Return value in R4, use the PFT call */
phyp_pft_hcall(H_XIRR, 0, 0, 0, 0, &xirr, &junk, &junk);
xirr &= 0x00ffffff;
if (xirr == 0) { /* No more pending interrupts? */
phyp_hcall(H_CPPR, (uint64_t)0xff);
break;
}
if (xirr == XICP_IPI) { /* Magic number for IPIs */
xirr = MAX_XICP_IRQS; /* Map to FreeBSD magic */
phyp_hcall(H_IPI, (uint64_t)(PCPU_GET(cpuid)),
0xff); /* Clear IPI */
}
/* XXX: super inefficient */
for (i = 0; i < sc->nintvecs; i++) {
if (sc->intvecs[i].irq == xirr)
break;
}
KASSERT(i < sc->nintvecs, ("Unmapped XIRR"));
powerpc_dispatch_intr(sc->intvecs[i].vector, tf);
}
}
static void
xicp_enable(device_t dev, u_int irq, u_int vector)
{
struct xicp_softc *sc;
cell_t status, cpu;
sc = device_get_softc(dev);
KASSERT(sc->nintvecs + 1 < sizeof(sc->intvecs)/sizeof(sc->intvecs[0]),
("Too many XICP interrupts"));
mtx_lock(&sc->sc_mtx);
sc->intvecs[sc->nintvecs].irq = irq;
sc->intvecs[sc->nintvecs].vector = vector;
mb();
sc->nintvecs++;
mtx_unlock(&sc->sc_mtx);
/* IPIs are also enabled */
if (irq == MAX_XICP_IRQS)
return;
/* Bind to this CPU to start: distrib. ID is last entry in gserver# */
cpu = PCPU_GET(cpuid);
rtas_call_method(sc->ibm_set_xive, 3, 1, irq, cpu, XICP_PRIORITY,
&status);
xicp_unmask(dev, irq);
}
static void
xicp_eoi(device_t dev, u_int irq)
{
uint64_t xirr;
if (irq == MAX_XICP_IRQS) /* Remap IPI interrupt to internal value */
irq = XICP_IPI;
xirr = irq | (XICP_PRIORITY << 24);
phyp_hcall(H_EOI, xirr);
}
static void
xicp_ipi(device_t dev, u_int cpu)
{
phyp_hcall(H_IPI, (uint64_t)cpu, XICP_PRIORITY);
}
static void
xicp_mask(device_t dev, u_int irq)
{
struct xicp_softc *sc = device_get_softc(dev);
cell_t status;
if (irq == MAX_XICP_IRQS)
return;
rtas_call_method(sc->ibm_int_off, 1, 1, irq, &status);
}
static void
xicp_unmask(device_t dev, u_int irq)
{
struct xicp_softc *sc = device_get_softc(dev);
cell_t status;
if (irq == MAX_XICP_IRQS)
return;
rtas_call_method(sc->ibm_int_on, 1, 1, irq, &status);
}