1*d24234c2SJerry Gilliam /*
2*d24234c2SJerry Gilliam * CDDL HEADER START
3*d24234c2SJerry Gilliam *
4*d24234c2SJerry Gilliam * The contents of this file are subject to the terms of the
5*d24234c2SJerry Gilliam * Common Development and Distribution License (the "License").
6*d24234c2SJerry Gilliam * You may not use this file except in compliance with the License.
7*d24234c2SJerry Gilliam *
8*d24234c2SJerry Gilliam * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*d24234c2SJerry Gilliam * or http://www.opensolaris.org/os/licensing.
10*d24234c2SJerry Gilliam * See the License for the specific language governing permissions
11*d24234c2SJerry Gilliam * and limitations under the License.
12*d24234c2SJerry Gilliam *
13*d24234c2SJerry Gilliam * When distributing Covered Code, include this CDDL HEADER in each
14*d24234c2SJerry Gilliam * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*d24234c2SJerry Gilliam * If applicable, add the following below this CDDL HEADER, with the
16*d24234c2SJerry Gilliam * fields enclosed by brackets "[]" replaced with your own identifying
17*d24234c2SJerry Gilliam * information: Portions Copyright [yyyy] [name of copyright owner]
18*d24234c2SJerry Gilliam *
19*d24234c2SJerry Gilliam * CDDL HEADER END
20*d24234c2SJerry Gilliam */
21*d24234c2SJerry Gilliam /*
22*d24234c2SJerry Gilliam * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
23*d24234c2SJerry Gilliam * Use is subject to license terms.
24*d24234c2SJerry Gilliam */
25*d24234c2SJerry Gilliam
26*d24234c2SJerry Gilliam /*
27*d24234c2SJerry Gilliam * This file contains platform-dependent MMU support routines,
28*d24234c2SJerry Gilliam * suitable for mmu methods with 2-cell physical addresses.
29*d24234c2SJerry Gilliam * Use of these routines makes the caller platform-dependent,
30*d24234c2SJerry Gilliam * since the caller assumes knowledge of the physical layout of
31*d24234c2SJerry Gilliam * the machines address space. Generic programs should use the
32*d24234c2SJerry Gilliam * standard client interface memory allocators.
33*d24234c2SJerry Gilliam */
34*d24234c2SJerry Gilliam
35*d24234c2SJerry Gilliam #include <sys/promif.h>
36*d24234c2SJerry Gilliam #include <sys/promimpl.h>
37*d24234c2SJerry Gilliam
38*d24234c2SJerry Gilliam ihandle_t
prom_mmu_ihandle(void)39*d24234c2SJerry Gilliam prom_mmu_ihandle(void)
40*d24234c2SJerry Gilliam {
41*d24234c2SJerry Gilliam static ihandle_t immu;
42*d24234c2SJerry Gilliam
43*d24234c2SJerry Gilliam if (immu != (ihandle_t)0)
44*d24234c2SJerry Gilliam return (immu);
45*d24234c2SJerry Gilliam
46*d24234c2SJerry Gilliam if (prom_getproplen(prom_chosennode(), "mmu") != sizeof (ihandle_t))
47*d24234c2SJerry Gilliam return (immu = (ihandle_t)-1);
48*d24234c2SJerry Gilliam
49*d24234c2SJerry Gilliam (void) prom_getprop(prom_chosennode(), "mmu", (caddr_t)(&immu));
50*d24234c2SJerry Gilliam return (immu);
51*d24234c2SJerry Gilliam }
52*d24234c2SJerry Gilliam
53*d24234c2SJerry Gilliam /*
54*d24234c2SJerry Gilliam * prom_map_phys:
55*d24234c2SJerry Gilliam *
56*d24234c2SJerry Gilliam * Create an MMU mapping for a given physical address to a given virtual
57*d24234c2SJerry Gilliam * address. The given resources are assumed to be owned by the caller,
58*d24234c2SJerry Gilliam * and are *not* removed from any free lists.
59*d24234c2SJerry Gilliam *
60*d24234c2SJerry Gilliam * This routine is suitable for mapping a 2-cell physical address.
61*d24234c2SJerry Gilliam */
62*d24234c2SJerry Gilliam
63*d24234c2SJerry Gilliam int
prom_map_phys(int mode,size_t size,caddr_t virt,unsigned long long physaddr)64*d24234c2SJerry Gilliam prom_map_phys(int mode, size_t size, caddr_t virt, unsigned long long physaddr)
65*d24234c2SJerry Gilliam {
66*d24234c2SJerry Gilliam cell_t ci[11];
67*d24234c2SJerry Gilliam int rv;
68*d24234c2SJerry Gilliam ihandle_t immu = prom_mmu_ihandle();
69*d24234c2SJerry Gilliam
70*d24234c2SJerry Gilliam if ((immu == (ihandle_t)-1))
71*d24234c2SJerry Gilliam return (-1);
72*d24234c2SJerry Gilliam
73*d24234c2SJerry Gilliam ci[0] = p1275_ptr2cell("call-method"); /* Service name */
74*d24234c2SJerry Gilliam ci[1] = (cell_t)7; /* #argument cells */
75*d24234c2SJerry Gilliam ci[2] = (cell_t)1; /* #result cells */
76*d24234c2SJerry Gilliam ci[3] = p1275_ptr2cell("map"); /* Arg1: method name */
77*d24234c2SJerry Gilliam ci[4] = p1275_ihandle2cell(immu); /* Arg2: mmu ihandle */
78*d24234c2SJerry Gilliam ci[5] = p1275_int2cell(mode); /* Arg3: SA1: mode */
79*d24234c2SJerry Gilliam ci[6] = p1275_size2cell(size); /* Arg4: SA2: size */
80*d24234c2SJerry Gilliam ci[7] = p1275_ptr2cell(virt); /* Arg5: SA3: virt */
81*d24234c2SJerry Gilliam ci[8] = p1275_ull2cell_high(physaddr); /* Arg6: SA4: phys.hi */
82*d24234c2SJerry Gilliam ci[9] = p1275_ull2cell_low(physaddr); /* Arg7: SA5: phys.low */
83*d24234c2SJerry Gilliam
84*d24234c2SJerry Gilliam promif_preprom();
85*d24234c2SJerry Gilliam rv = p1275_cif_handler(&ci);
86*d24234c2SJerry Gilliam promif_postprom();
87*d24234c2SJerry Gilliam
88*d24234c2SJerry Gilliam if (rv != 0)
89*d24234c2SJerry Gilliam return (-1);
90*d24234c2SJerry Gilliam if (ci[10] != 0) /* Res1: Catch result */
91*d24234c2SJerry Gilliam return (-1);
92*d24234c2SJerry Gilliam return (0);
93*d24234c2SJerry Gilliam }
94*d24234c2SJerry Gilliam
95*d24234c2SJerry Gilliam void
prom_unmap_phys(size_t size,caddr_t virt)96*d24234c2SJerry Gilliam prom_unmap_phys(size_t size, caddr_t virt)
97*d24234c2SJerry Gilliam {
98*d24234c2SJerry Gilliam (void) prom_unmap_virt(size, virt);
99*d24234c2SJerry Gilliam }
100*d24234c2SJerry Gilliam
101*d24234c2SJerry Gilliam /*
102*d24234c2SJerry Gilliam * Allocate aligned or unaligned virtual address space, unmapped.
103*d24234c2SJerry Gilliam */
104*d24234c2SJerry Gilliam caddr_t
prom_allocate_virt(uint_t align,size_t size)105*d24234c2SJerry Gilliam prom_allocate_virt(uint_t align, size_t size)
106*d24234c2SJerry Gilliam {
107*d24234c2SJerry Gilliam cell_t ci[9];
108*d24234c2SJerry Gilliam int rv;
109*d24234c2SJerry Gilliam ihandle_t immu = prom_mmu_ihandle();
110*d24234c2SJerry Gilliam
111*d24234c2SJerry Gilliam if ((immu == (ihandle_t)-1))
112*d24234c2SJerry Gilliam return ((caddr_t)-1);
113*d24234c2SJerry Gilliam
114*d24234c2SJerry Gilliam if (align == 0)
115*d24234c2SJerry Gilliam align = 1;
116*d24234c2SJerry Gilliam
117*d24234c2SJerry Gilliam ci[0] = p1275_ptr2cell("call-method"); /* Service name */
118*d24234c2SJerry Gilliam ci[1] = (cell_t)4; /* #argument cells */
119*d24234c2SJerry Gilliam ci[2] = (cell_t)2; /* #result cells */
120*d24234c2SJerry Gilliam ci[3] = p1275_ptr2cell("claim"); /* Arg1: Method name */
121*d24234c2SJerry Gilliam ci[4] = p1275_ihandle2cell(immu); /* Arg2: mmu ihandle */
122*d24234c2SJerry Gilliam ci[5] = p1275_uint2cell(align); /* Arg3: SA1: align */
123*d24234c2SJerry Gilliam ci[6] = p1275_size2cell(size); /* Arg4: SA2: size */
124*d24234c2SJerry Gilliam
125*d24234c2SJerry Gilliam promif_preprom();
126*d24234c2SJerry Gilliam rv = p1275_cif_handler(&ci);
127*d24234c2SJerry Gilliam promif_postprom();
128*d24234c2SJerry Gilliam
129*d24234c2SJerry Gilliam if (rv != 0)
130*d24234c2SJerry Gilliam return ((caddr_t)-1);
131*d24234c2SJerry Gilliam if (ci[7] != 0) /* Res1: Catch result */
132*d24234c2SJerry Gilliam return ((caddr_t)-1);
133*d24234c2SJerry Gilliam return (p1275_cell2ptr(ci[8])); /* Res2: SR1: base */
134*d24234c2SJerry Gilliam }
135*d24234c2SJerry Gilliam
136*d24234c2SJerry Gilliam /*
137*d24234c2SJerry Gilliam * Claim a region of virtual address space, unmapped.
138*d24234c2SJerry Gilliam */
139*d24234c2SJerry Gilliam caddr_t
prom_claim_virt(size_t size,caddr_t virt)140*d24234c2SJerry Gilliam prom_claim_virt(size_t size, caddr_t virt)
141*d24234c2SJerry Gilliam {
142*d24234c2SJerry Gilliam cell_t ci[10];
143*d24234c2SJerry Gilliam int rv;
144*d24234c2SJerry Gilliam ihandle_t immu = prom_mmu_ihandle();
145*d24234c2SJerry Gilliam
146*d24234c2SJerry Gilliam if ((immu == (ihandle_t)-1))
147*d24234c2SJerry Gilliam return ((caddr_t)-1);
148*d24234c2SJerry Gilliam
149*d24234c2SJerry Gilliam ci[0] = p1275_ptr2cell("call-method"); /* Service name */
150*d24234c2SJerry Gilliam ci[1] = (cell_t)5; /* #argument cells */
151*d24234c2SJerry Gilliam ci[2] = (cell_t)2; /* #result cells */
152*d24234c2SJerry Gilliam ci[3] = p1275_ptr2cell("claim"); /* Arg1: Method name */
153*d24234c2SJerry Gilliam ci[4] = p1275_ihandle2cell(immu); /* Arg2: mmu ihandle */
154*d24234c2SJerry Gilliam ci[5] = (cell_t)0; /* Arg3: align */
155*d24234c2SJerry Gilliam ci[6] = p1275_size2cell(size); /* Arg4: length */
156*d24234c2SJerry Gilliam ci[7] = p1275_ptr2cell(virt); /* Arg5: virt */
157*d24234c2SJerry Gilliam
158*d24234c2SJerry Gilliam promif_preprom();
159*d24234c2SJerry Gilliam rv = p1275_cif_handler(&ci);
160*d24234c2SJerry Gilliam promif_postprom();
161*d24234c2SJerry Gilliam
162*d24234c2SJerry Gilliam if (rv != 0)
163*d24234c2SJerry Gilliam return ((caddr_t)-1);
164*d24234c2SJerry Gilliam if (ci[8] != 0) /* Res1: Catch result */
165*d24234c2SJerry Gilliam return ((caddr_t)-1);
166*d24234c2SJerry Gilliam return (p1275_cell2ptr(ci[9])); /* Res2: base */
167*d24234c2SJerry Gilliam }
168*d24234c2SJerry Gilliam
169*d24234c2SJerry Gilliam /*
170*d24234c2SJerry Gilliam * Free virtual address resource (no unmapping is done).
171*d24234c2SJerry Gilliam */
172*d24234c2SJerry Gilliam void
prom_free_virt(size_t size,caddr_t virt)173*d24234c2SJerry Gilliam prom_free_virt(size_t size, caddr_t virt)
174*d24234c2SJerry Gilliam {
175*d24234c2SJerry Gilliam cell_t ci[7];
176*d24234c2SJerry Gilliam ihandle_t immu = prom_mmu_ihandle();
177*d24234c2SJerry Gilliam
178*d24234c2SJerry Gilliam if ((immu == (ihandle_t)-1))
179*d24234c2SJerry Gilliam return;
180*d24234c2SJerry Gilliam
181*d24234c2SJerry Gilliam ci[0] = p1275_ptr2cell("call-method"); /* Service name */
182*d24234c2SJerry Gilliam ci[1] = (cell_t)4; /* #argument cells */
183*d24234c2SJerry Gilliam ci[2] = (cell_t)0; /* #return cells */
184*d24234c2SJerry Gilliam ci[3] = p1275_ptr2cell("release"); /* Arg1: Method name */
185*d24234c2SJerry Gilliam ci[4] = p1275_ihandle2cell(immu); /* Arg2: mmu ihandle */
186*d24234c2SJerry Gilliam ci[5] = p1275_size2cell(size); /* Arg3: length */
187*d24234c2SJerry Gilliam ci[6] = p1275_ptr2cell(virt); /* Arg4: virt */
188*d24234c2SJerry Gilliam
189*d24234c2SJerry Gilliam promif_preprom();
190*d24234c2SJerry Gilliam (void) p1275_cif_handler(&ci);
191*d24234c2SJerry Gilliam promif_postprom();
192*d24234c2SJerry Gilliam }
193*d24234c2SJerry Gilliam
194*d24234c2SJerry Gilliam /*
195*d24234c2SJerry Gilliam * Un-map virtual address. Does not free underlying resources.
196*d24234c2SJerry Gilliam */
197*d24234c2SJerry Gilliam void
prom_unmap_virt(size_t size,caddr_t virt)198*d24234c2SJerry Gilliam prom_unmap_virt(size_t size, caddr_t virt)
199*d24234c2SJerry Gilliam {
200*d24234c2SJerry Gilliam cell_t ci[7];
201*d24234c2SJerry Gilliam ihandle_t immu = prom_mmu_ihandle();
202*d24234c2SJerry Gilliam
203*d24234c2SJerry Gilliam if ((immu == (ihandle_t)-1))
204*d24234c2SJerry Gilliam return;
205*d24234c2SJerry Gilliam
206*d24234c2SJerry Gilliam ci[0] = p1275_ptr2cell("call-method"); /* Service name */
207*d24234c2SJerry Gilliam ci[1] = (cell_t)4; /* #argument cells */
208*d24234c2SJerry Gilliam ci[2] = (cell_t)0; /* #result cells */
209*d24234c2SJerry Gilliam ci[3] = p1275_ptr2cell("unmap"); /* Arg1: Method name */
210*d24234c2SJerry Gilliam ci[4] = p1275_ihandle2cell(immu); /* Arg2: mmu ihandle */
211*d24234c2SJerry Gilliam ci[5] = p1275_size2cell(size); /* Arg3: SA1: size */
212*d24234c2SJerry Gilliam ci[6] = p1275_ptr2cell(virt); /* Arg4: SA2: virt */
213*d24234c2SJerry Gilliam
214*d24234c2SJerry Gilliam promif_preprom();
215*d24234c2SJerry Gilliam (void) p1275_cif_handler(&ci);
216*d24234c2SJerry Gilliam promif_postprom();
217*d24234c2SJerry Gilliam }
218*d24234c2SJerry Gilliam
219*d24234c2SJerry Gilliam static pnode_t
prom_mmu_phandle(void)220*d24234c2SJerry Gilliam prom_mmu_phandle(void)
221*d24234c2SJerry Gilliam {
222*d24234c2SJerry Gilliam static pnode_t pmmu = 0;
223*d24234c2SJerry Gilliam
224*d24234c2SJerry Gilliam if (pmmu == (pnode_t)0) {
225*d24234c2SJerry Gilliam ihandle_t ih;
226*d24234c2SJerry Gilliam
227*d24234c2SJerry Gilliam if ((ih = prom_mmu_ihandle()) == (ihandle_t)-1)
228*d24234c2SJerry Gilliam prom_panic("Can't get mmu ihandle");
229*d24234c2SJerry Gilliam pmmu = prom_getphandle(ih);
230*d24234c2SJerry Gilliam }
231*d24234c2SJerry Gilliam return (pmmu);
232*d24234c2SJerry Gilliam }
233*d24234c2SJerry Gilliam
234*d24234c2SJerry Gilliam
235*d24234c2SJerry Gilliam int
prom_virt_avail_len(void)236*d24234c2SJerry Gilliam prom_virt_avail_len(void)
237*d24234c2SJerry Gilliam {
238*d24234c2SJerry Gilliam return (prom_getproplen(prom_mmu_phandle(), "available"));
239*d24234c2SJerry Gilliam }
240*d24234c2SJerry Gilliam
241*d24234c2SJerry Gilliam int
prom_virt_avail(caddr_t prop)242*d24234c2SJerry Gilliam prom_virt_avail(caddr_t prop)
243*d24234c2SJerry Gilliam {
244*d24234c2SJerry Gilliam return (prom_getprop(prom_mmu_phandle(), "available", prop));
245*d24234c2SJerry Gilliam }
246*d24234c2SJerry Gilliam
247*d24234c2SJerry Gilliam /*
248*d24234c2SJerry Gilliam * Translate virtual address to physical address.
249*d24234c2SJerry Gilliam * Returns 0: Success; Non-zero: failure.
250*d24234c2SJerry Gilliam * Returns *phys_hi, *phys_lo and *mode only if successful.
251*d24234c2SJerry Gilliam */
252*d24234c2SJerry Gilliam int
prom_translate_virt(caddr_t virt,int * valid,unsigned long long * physaddr,int * mode)253*d24234c2SJerry Gilliam prom_translate_virt(caddr_t virt, int *valid,
254*d24234c2SJerry Gilliam unsigned long long *physaddr, int *mode)
255*d24234c2SJerry Gilliam {
256*d24234c2SJerry Gilliam cell_t ci[11];
257*d24234c2SJerry Gilliam int rv;
258*d24234c2SJerry Gilliam ihandle_t immu = prom_mmu_ihandle();
259*d24234c2SJerry Gilliam
260*d24234c2SJerry Gilliam *valid = 0;
261*d24234c2SJerry Gilliam
262*d24234c2SJerry Gilliam if ((immu == (ihandle_t)-1))
263*d24234c2SJerry Gilliam return (-1);
264*d24234c2SJerry Gilliam
265*d24234c2SJerry Gilliam ci[0] = p1275_ptr2cell("call-method"); /* Service name */
266*d24234c2SJerry Gilliam ci[1] = (cell_t)3; /* #argument cells */
267*d24234c2SJerry Gilliam ci[2] = (cell_t)5; /* #result cells */
268*d24234c2SJerry Gilliam ci[3] = p1275_ptr2cell("translate"); /* Arg1: Method name */
269*d24234c2SJerry Gilliam ci[4] = p1275_ihandle2cell(immu); /* Arg2: mmu ihandle */
270*d24234c2SJerry Gilliam ci[5] = p1275_ptr2cell(virt); /* Arg3: virt */
271*d24234c2SJerry Gilliam ci[6] = 0; /* Res1: catch-resule */
272*d24234c2SJerry Gilliam ci[7] = 0; /* Res2: sr1: valid */
273*d24234c2SJerry Gilliam
274*d24234c2SJerry Gilliam promif_preprom();
275*d24234c2SJerry Gilliam rv = p1275_cif_handler(&ci);
276*d24234c2SJerry Gilliam promif_postprom();
277*d24234c2SJerry Gilliam
278*d24234c2SJerry Gilliam if (rv == -1) /* Did the call fail ? */
279*d24234c2SJerry Gilliam return (-1);
280*d24234c2SJerry Gilliam if (ci[6] != 0) /* Catch result */
281*d24234c2SJerry Gilliam return (-1);
282*d24234c2SJerry Gilliam
283*d24234c2SJerry Gilliam if (p1275_cell2int(ci[7]) != -1) /* Valid results ? */
284*d24234c2SJerry Gilliam return (0);
285*d24234c2SJerry Gilliam
286*d24234c2SJerry Gilliam *mode = p1275_cell2int(ci[8]); /* Res3: sr2: mode, if valid */
287*d24234c2SJerry Gilliam *physaddr = p1275_cells2ull(ci[9], ci[10]);
288*d24234c2SJerry Gilliam /* Res4: sr3: phys-hi ... Res5: sr4: phys-lo */
289*d24234c2SJerry Gilliam *valid = -1; /* Indicate valid result */
290*d24234c2SJerry Gilliam return (0);
291*d24234c2SJerry Gilliam }
292