WebSVN – HelenOS – Diff – /trunk/kernel/arch/sparc64/include/asm.h


/*
 * Copyright (C) 2005 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * 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.
 */
 
/** @addtogroup sparc64
 * @{
 */
/** @file
 */
 
#ifndef KERN_sparc64_ASM_H_
#define KERN_sparc64_ASM_H_
 
#include <typedefs.h>
#include <arch/types.h>
#include <arch/register.h>
#include <config.h>
 
/** Read Processor State register.
 *
 * @return Value of PSTATE register.
 */
static inline uint64_t pstate_read(void)
{
    uint64_t v;
   
    __asm__ volatile ("rdpr %%pstate, %0\n" : "=r" (v));
   
    return v;
}
 
/** Write Processor State register.
 *
 * @param v New value of PSTATE register.
 */
static inline void pstate_write(uint64_t v)
{
    __asm__ volatile ("wrpr %0, %1, %%pstate\n" : : "r" (v), "i" (0));
}
 
/** Read TICK_compare Register.
 *
 * @return Value of TICK_comapre register.
 */
static inline uint64_t tick_compare_read(void)
{
    uint64_t v;
   
    __asm__ volatile ("rd %%tick_cmpr, %0\n" : "=r" (v));
   
    return v;
}
 
/** Write TICK_compare Register.
 *
 * @param v New value of TICK_comapre register.
 */
static inline void tick_compare_write(uint64_t v)
{
    __asm__ volatile ("wr %0, %1, %%tick_cmpr\n" : : "r" (v), "i" (0));
}
 
/** Read TICK Register.
 *
 * @return Value of TICK register.
 */
static inline uint64_t tick_read(void)
{
    uint64_t v;
   
    __asm__ volatile ("rdpr %%tick, %0\n" : "=r" (v));
   
    return v;
}
 
/** Write TICK Register.
 *
 * @param v New value of TICK register.
 */
static inline void tick_write(uint64_t v)
{
    __asm__ volatile ("wrpr %0, %1, %%tick\n" : : "r" (v), "i" (0));
}
 
/** Read SOFTINT Register.
 *
 * @return Value of SOFTINT register.
 */
static inline uint64_t softint_read(void)
{
    uint64_t v;
 
    __asm__ volatile ("rd %%softint, %0\n" : "=r" (v));
 
    return v;
}
 
/** Write SOFTINT Register.
 *
 * @param v New value of SOFTINT register.
 */
static inline void softint_write(uint64_t v)
{
    __asm__ volatile ("wr %0, %1, %%softint\n" : : "r" (v), "i" (0));
}
 
/** Write CLEAR_SOFTINT Register.
 *
 * Bits set in CLEAR_SOFTINT register will be cleared in SOFTINT register.
 *
 * @param v New value of CLEAR_SOFTINT register.
 */
static inline void clear_softint_write(uint64_t v)
{
    __asm__ volatile ("wr %0, %1, %%clear_softint\n" : : "r" (v), "i" (0));
}
 
/** Write SET_SOFTINT Register.
 *
 * Bits set in SET_SOFTINT register will be set in SOFTINT register.
 *
 * @param v New value of SET_SOFTINT register.
 */
static inline void set_softint_write(uint64_t v)
{
    __asm__ volatile ("wr %0, %1, %%set_softint\n" : : "r" (v), "i" (0));
}
 
/** Enable interrupts.
 *
 * Enable interrupts and return previous
 * value of IPL.
 *
 * @return Old interrupt priority level.
 */
static inline ipl_t interrupts_enable(void) {
    pstate_reg_t pstate;
    uint64_t value;
   
    value = pstate_read();
    pstate.value = value;
    pstate.ie = true;
    pstate_write(pstate.value);
   
    return (ipl_t) value;
}
 
/** Disable interrupts.
 *
 * Disable interrupts and return previous
 * value of IPL.
 *
 * @return Old interrupt priority level.
 */
static inline ipl_t interrupts_disable(void) {
    pstate_reg_t pstate;
    uint64_t value;
   
    value = pstate_read();
    pstate.value = value;
    pstate.ie = false;
    pstate_write(pstate.value);
   
    return (ipl_t) value;
}
 
/** Restore interrupt priority level.
 *
 * Restore IPL.
 *
 * @param ipl Saved interrupt priority level.
 */
static inline void interrupts_restore(ipl_t ipl) {
    pstate_reg_t pstate;
   
    pstate.value = pstate_read();
    pstate.ie = ((pstate_reg_t) ipl).ie;
    pstate_write(pstate.value);
}
 
/** Return interrupt priority level.
 *
 * Return IPL.
 *
 * @return Current interrupt priority level.
 */
static inline ipl_t interrupts_read(void) {
    return (ipl_t) pstate_read();
}
 
/** Return base address of current stack.
 *
 * Return the base address of the current stack.
 * The stack is assumed to be STACK_SIZE bytes long.
 * The stack must start on page boundary.
 */
static inline uintptr_t get_stack_base(void)
{
    uintptr_t v;
   
    __asm__ volatile ("and %%sp, %1, %0\n" : "=r" (v) : "r" (~(STACK_SIZE-1)));
   
    return v;
}
 
/** Read Version Register.
 *
 * @return Value of VER register.
 */
static inline uint64_t ver_read(void)
{
    uint64_t v;
   
    __asm__ volatile ("rdpr %%ver, %0\n" : "=r" (v));
   
    return v;
}
 
/** Read Trap Base Address register.
 *
 * @return Current value in TBA.
 */
static inline uint64_t tba_read(void)
{
    uint64_t v;
   
    __asm__ volatile ("rdpr %%tba, %0\n" : "=r" (v));
   
    return v;
}
 
/** Read Trap Program Counter register.
 *
 * @return Current value in TPC.
 */
static inline uint64_t tpc_read(void)
{
    uint64_t v;
   
    __asm__ volatile ("rdpr %%tpc, %0\n" : "=r" (v));
   
    return v;
}
 
/** Read Trap Level register.
 *
 * @return Current value in TL.
 */
static inline uint64_t tl_read(void)
{
    uint64_t v;
   
    __asm__ volatile ("rdpr %%tl, %0\n" : "=r" (v));
   
    return v;
}
 
/** Write Trap Base Address register.
 *
 * @param v New value of TBA.
 */
static inline void tba_write(uint64_t v)
{
    __asm__ volatile ("wrpr %0, %1, %%tba\n" : : "r" (v), "i" (0));
}
 
/** Load uint64_t from alternate space.
 *
 * @param asi ASI determining the alternate space.
 * @param va Virtual address within the ASI.
 *
 * @return Value read from the virtual address in the specified address space.
 */
static inline uint64_t asi_u64_read(asi_t asi, uintptr_t va)
{
    uint64_t v;
   
    __asm__ volatile ("ldxa [%1] %2, %0\n" : "=r" (v) : "r" (va), "i" (asi));
   
    return v;
}
 
/** Store uint64_t to alternate space.
 *
 * @param asi ASI determining the alternate space.
 * @param va Virtual address within the ASI.
 * @param v Value to be written.
 */
static inline void asi_u64_write(asi_t asi, uintptr_t va, uint64_t v)
{
    __asm__ volatile ("stxa %0, [%1] %2\n" : :  "r" (v), "r" (va), "i" (asi) : "memory");
}
 
void cpu_halt(void);
void cpu_sleep(void);
void asm_delay_loop(uint32_t t);
 
#endif
 
/** @}
 */
 

Rev 1787	Rev 1849
1	/*	1	/*
2	* Copyright (C) 2005 Jakub Jermar	2	* Copyright (C) 2005 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup sparc64	29	/** @addtogroup sparc64
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef KERN_sparc64_ASM_H_	35	#ifndef KERN_sparc64_ASM_H_
36	#define KERN_sparc64_ASM_H_	36	#define KERN_sparc64_ASM_H_
37		37
38	#include <typedefs.h>	38	#include <typedefs.h>
39	#include <arch/types.h>	39	#include <arch/types.h>
40	#include <arch/register.h>	40	#include <arch/register.h>
41	#include <config.h>	41	#include <config.h>
42		42
43	/** Read Processor State register.	43	/** Read Processor State register.
44	*	44	*
45	* @return Value of PSTATE register.	45	* @return Value of PSTATE register.
46	*/	46	*/
47	static inline uint64_t pstate_read(void)	47	static inline uint64_t pstate_read(void)
48	{	48	{
49	uint64_t v;	49	uint64_t v;
50		50
51	__asm__ volatile ("rdpr %%pstate, %0\n" : "=r" (v));	51	__asm__ volatile ("rdpr %%pstate, %0\n" : "=r" (v));
52		52
53	return v;	53	return v;
54	}	54	}
55		55
56	/** Write Processor State register.	56	/** Write Processor State register.
57	*	57	*
58	* @param v New value of PSTATE register.	58	* @param v New value of PSTATE register.
59	*/	59	*/
60	static inline void pstate_write(uint64_t v)	60	static inline void pstate_write(uint64_t v)
61	{	61	{
62	__asm__ volatile ("wrpr %0, %1, %%pstate\n" : : "r" (v), "i" (0));	62	__asm__ volatile ("wrpr %0, %1, %%pstate\n" : : "r" (v), "i" (0));
63	}	63	}
64		64
65	/** Read TICK_compare Register.	65	/** Read TICK_compare Register.
66	*	66	*
67	* @return Value of TICK_comapre register.	67	* @return Value of TICK_comapre register.
68	*/	68	*/
69	static inline uint64_t tick_compare_read(void)	69	static inline uint64_t tick_compare_read(void)
70	{	70	{
71	uint64_t v;	71	uint64_t v;
72		72
73	__asm__ volatile ("rd %%tick_cmpr, %0\n" : "=r" (v));	73	__asm__ volatile ("rd %%tick_cmpr, %0\n" : "=r" (v));
74		74
75	return v;	75	return v;
76	}	76	}
77		77
78	/** Write TICK_compare Register.	78	/** Write TICK_compare Register.
79	*	79	*
80	* @param v New value of TICK_comapre register.	80	* @param v New value of TICK_comapre register.
81	*/	81	*/
82	static inline void tick_compare_write(uint64_t v)	82	static inline void tick_compare_write(uint64_t v)
83	{	83	{
84	__asm__ volatile ("wr %0, %1, %%tick_cmpr\n" : : "r" (v), "i" (0));	84	__asm__ volatile ("wr %0, %1, %%tick_cmpr\n" : : "r" (v), "i" (0));
85	}	85	}
86		86
87	/** Read TICK Register.	87	/** Read TICK Register.
88	*	88	*
89	* @return Value of TICK register.	89	* @return Value of TICK register.
90	*/	90	*/
91	static inline uint64_t tick_read(void)	91	static inline uint64_t tick_read(void)
92	{	92	{
93	uint64_t v;	93	uint64_t v;
94		94
95	__asm__ volatile ("rdpr %%tick, %0\n" : "=r" (v));	95	__asm__ volatile ("rdpr %%tick, %0\n" : "=r" (v));
96		96
97	return v;	97	return v;
98	}	98	}
99		99
100	/** Write TICK Register.	100	/** Write TICK Register.
101	*	101	*
102	* @param v New value of TICK register.	102	* @param v New value of TICK register.
103	*/	103	*/
104	static inline void tick_write(uint64_t v)	104	static inline void tick_write(uint64_t v)
105	{	105	{
106	__asm__ volatile ("wrpr %0, %1, %%tick\n" : : "r" (v), "i" (0));	106	__asm__ volatile ("wrpr %0, %1, %%tick\n" : : "r" (v), "i" (0));
107	}	107	}
108		108
109	/** Read SOFTINT Register.	109	/** Read SOFTINT Register.
110	*	110	*
111	* @return Value of SOFTINT register.	111	* @return Value of SOFTINT register.
112	*/	112	*/
113	static inline uint64_t softint_read(void)	113	static inline uint64_t softint_read(void)
114	{	114	{
115	uint64_t v;	115	uint64_t v;
116		116
117	__asm__ volatile ("rd %%softint, %0\n" : "=r" (v));	117	__asm__ volatile ("rd %%softint, %0\n" : "=r" (v));
118		118
119	return v;	119	return v;
120	}	120	}
121		121
122	/** Write SOFTINT Register.	122	/** Write SOFTINT Register.
123	*	123	*
124	* @param v New value of SOFTINT register.	124	* @param v New value of SOFTINT register.
125	*/	125	*/
126	static inline void softint_write(uint64_t v)	126	static inline void softint_write(uint64_t v)
127	{	127	{
128	__asm__ volatile ("wr %0, %1, %%softint\n" : : "r" (v), "i" (0));	128	__asm__ volatile ("wr %0, %1, %%softint\n" : : "r" (v), "i" (0));
129	}	129	}
130		130
131	/** Write CLEAR_SOFTINT Register.	131	/** Write CLEAR_SOFTINT Register.
132	*	132	*
133	* Bits set in CLEAR_SOFTINT register will be cleared in SOFTINT register.	133	* Bits set in CLEAR_SOFTINT register will be cleared in SOFTINT register.
134	*	134	*
135	* @param v New value of CLEAR_SOFTINT register.	135	* @param v New value of CLEAR_SOFTINT register.
136	*/	136	*/
137	static inline void clear_softint_write(uint64_t v)	137	static inline void clear_softint_write(uint64_t v)
138	{	138	{
139	__asm__ volatile ("wr %0, %1, %%clear_softint\n" : : "r" (v), "i" (0));	139	__asm__ volatile ("wr %0, %1, %%clear_softint\n" : : "r" (v), "i" (0));
140	}	140	}
141		141
-		142	/** Write SET_SOFTINT Register.
-		143	*
-		144	* Bits set in SET_SOFTINT register will be set in SOFTINT register.
-		145	*
-		146	* @param v New value of SET_SOFTINT register.
-		147	*/
-		148	static inline void set_softint_write(uint64_t v)
-		149	{
-		150	__asm__ volatile ("wr %0, %1, %%set_softint\n" : : "r" (v), "i" (0));
-		151	}
-		152
142	/** Enable interrupts.	153	/** Enable interrupts.
143	*	154	*
144	* Enable interrupts and return previous	155	* Enable interrupts and return previous
145	* value of IPL.	156	* value of IPL.
146	*	157	*
147	* @return Old interrupt priority level.	158	* @return Old interrupt priority level.
148	*/	159	*/
149	static inline ipl_t interrupts_enable(void) {	160	static inline ipl_t interrupts_enable(void) {
150	pstate_reg_t pstate;	161	pstate_reg_t pstate;
151	uint64_t value;	162	uint64_t value;
152		163
153	value = pstate_read();	164	value = pstate_read();
154	pstate.value = value;	165	pstate.value = value;
155	pstate.ie = true;	166	pstate.ie = true;
156	pstate_write(pstate.value);	167	pstate_write(pstate.value);
157		168
158	return (ipl_t) value;	169	return (ipl_t) value;
159	}	170	}
160		171
161	/** Disable interrupts.	172	/** Disable interrupts.
162	*	173	*
163	* Disable interrupts and return previous	174	* Disable interrupts and return previous
164	* value of IPL.	175	* value of IPL.
165	*	176	*
166	* @return Old interrupt priority level.	177	* @return Old interrupt priority level.
167	*/	178	*/
168	static inline ipl_t interrupts_disable(void) {	179	static inline ipl_t interrupts_disable(void) {
169	pstate_reg_t pstate;	180	pstate_reg_t pstate;
170	uint64_t value;	181	uint64_t value;
171		182
172	value = pstate_read();	183	value = pstate_read();
173	pstate.value = value;	184	pstate.value = value;
174	pstate.ie = false;	185	pstate.ie = false;
175	pstate_write(pstate.value);	186	pstate_write(pstate.value);
176		187
177	return (ipl_t) value;	188	return (ipl_t) value;
178	}	189	}
179		190
180	/** Restore interrupt priority level.	191	/** Restore interrupt priority level.
181	*	192	*
182	* Restore IPL.	193	* Restore IPL.
183	*	194	*
184	* @param ipl Saved interrupt priority level.	195	* @param ipl Saved interrupt priority level.
185	*/	196	*/
186	static inline void interrupts_restore(ipl_t ipl) {	197	static inline void interrupts_restore(ipl_t ipl) {
187	pstate_reg_t pstate;	198	pstate_reg_t pstate;
188		199
189	pstate.value = pstate_read();	200	pstate.value = pstate_read();
190	pstate.ie = ((pstate_reg_t) ipl).ie;	201	pstate.ie = ((pstate_reg_t) ipl).ie;
191	pstate_write(pstate.value);	202	pstate_write(pstate.value);
192	}	203	}
193		204
194	/** Return interrupt priority level.	205	/** Return interrupt priority level.
195	*	206	*
196	* Return IPL.	207	* Return IPL.
197	*	208	*
198	* @return Current interrupt priority level.	209	* @return Current interrupt priority level.
199	*/	210	*/
200	static inline ipl_t interrupts_read(void) {	211	static inline ipl_t interrupts_read(void) {
201	return (ipl_t) pstate_read();	212	return (ipl_t) pstate_read();
202	}	213	}
203		214
204	/** Return base address of current stack.	215	/** Return base address of current stack.
205	*	216	*
206	* Return the base address of the current stack.	217	* Return the base address of the current stack.
207	* The stack is assumed to be STACK_SIZE bytes long.	218	* The stack is assumed to be STACK_SIZE bytes long.
208	* The stack must start on page boundary.	219	* The stack must start on page boundary.
209	*/	220	*/
210	static inline uintptr_t get_stack_base(void)	221	static inline uintptr_t get_stack_base(void)
211	{	222	{
212	uintptr_t v;	223	uintptr_t v;
213		224
214	__asm__ volatile ("and %%sp, %1, %0\n" : "=r" (v) : "r" (~(STACK_SIZE-1)));	225	__asm__ volatile ("and %%sp, %1, %0\n" : "=r" (v) : "r" (~(STACK_SIZE-1)));
215		226
216	return v;	227	return v;
217	}	228	}
218		229
219	/** Read Version Register.	230	/** Read Version Register.
220	*	231	*
221	* @return Value of VER register.	232	* @return Value of VER register.
222	*/	233	*/
223	static inline uint64_t ver_read(void)	234	static inline uint64_t ver_read(void)
224	{	235	{
225	uint64_t v;	236	uint64_t v;
226		237
227	__asm__ volatile ("rdpr %%ver, %0\n" : "=r" (v));	238	__asm__ volatile ("rdpr %%ver, %0\n" : "=r" (v));
228		239
229	return v;	240	return v;
230	}	241	}
231		242
232	/** Read Trap Base Address register.	243	/** Read Trap Base Address register.
233	*	244	*
234	* @return Current value in TBA.	245	* @return Current value in TBA.
235	*/	246	*/
236	static inline uint64_t tba_read(void)	247	static inline uint64_t tba_read(void)
237	{	248	{
238	uint64_t v;	249	uint64_t v;
239		250
240	__asm__ volatile ("rdpr %%tba, %0\n" : "=r" (v));	251	__asm__ volatile ("rdpr %%tba, %0\n" : "=r" (v));
241		252
242	return v;	253	return v;
243	}	254	}
244		255
245	/** Read Trap Program Counter register.	256	/** Read Trap Program Counter register.
246	*	257	*
247	* @return Current value in TPC.	258	* @return Current value in TPC.
248	*/	259	*/
249	static inline uint64_t tpc_read(void)	260	static inline uint64_t tpc_read(void)
250	{	261	{
251	uint64_t v;	262	uint64_t v;
252		263
253	__asm__ volatile ("rdpr %%tpc, %0\n" : "=r" (v));	264	__asm__ volatile ("rdpr %%tpc, %0\n" : "=r" (v));
254		265
255	return v;	266	return v;
256	}	267	}
257		268
258	/** Read Trap Level register.	269	/** Read Trap Level register.
259	*	270	*
260	* @return Current value in TL.	271	* @return Current value in TL.
261	*/	272	*/
262	static inline uint64_t tl_read(void)	273	static inline uint64_t tl_read(void)
263	{	274	{
264	uint64_t v;	275	uint64_t v;
265		276
266	__asm__ volatile ("rdpr %%tl, %0\n" : "=r" (v));	277	__asm__ volatile ("rdpr %%tl, %0\n" : "=r" (v));
267		278
268	return v;	279	return v;
269	}	280	}
270		281
271	/** Write Trap Base Address register.	282	/** Write Trap Base Address register.
272	*	283	*
273	* @param v New value of TBA.	284	* @param v New value of TBA.
274	*/	285	*/
275	static inline void tba_write(uint64_t v)	286	static inline void tba_write(uint64_t v)
276	{	287	{
277	__asm__ volatile ("wrpr %0, %1, %%tba\n" : : "r" (v), "i" (0));	288	__asm__ volatile ("wrpr %0, %1, %%tba\n" : : "r" (v), "i" (0));
278	}	289	}
279		290
280	/** Load uint64_t from alternate space.	291	/** Load uint64_t from alternate space.
281	*	292	*
282	* @param asi ASI determining the alternate space.	293	* @param asi ASI determining the alternate space.
283	* @param va Virtual address within the ASI.	294	* @param va Virtual address within the ASI.
284	*	295	*
285	* @return Value read from the virtual address in the specified address space.	296	* @return Value read from the virtual address in the specified address space.
286	*/	297	*/
287	static inline uint64_t asi_u64_read(asi_t asi, uintptr_t va)	298	static inline uint64_t asi_u64_read(asi_t asi, uintptr_t va)
288	{	299	{
289	uint64_t v;	300	uint64_t v;
290		301
291	__asm__ volatile ("ldxa [%1] %2, %0\n" : "=r" (v) : "r" (va), "i" (asi));	302	__asm__ volatile ("ldxa [%1] %2, %0\n" : "=r" (v) : "r" (va), "i" (asi));
292		303
293	return v;	304	return v;
294	}	305	}
295		306
296	/** Store uint64_t to alternate space.	307	/** Store uint64_t to alternate space.
297	*	308	*
298	* @param asi ASI determining the alternate space.	309	* @param asi ASI determining the alternate space.
299	* @param va Virtual address within the ASI.	310	* @param va Virtual address within the ASI.
300	* @param v Value to be written.	311	* @param v Value to be written.
301	*/	312	*/
302	static inline void asi_u64_write(asi_t asi, uintptr_t va, uint64_t v)	313	static inline void asi_u64_write(asi_t asi, uintptr_t va, uint64_t v)
303	{	314	{
304	__asm__ volatile ("stxa %0, [%1] %2\n" : : "r" (v), "r" (va), "i" (asi) : "memory");	315	__asm__ volatile ("stxa %0, [%1] %2\n" : : "r" (v), "r" (va), "i" (asi) : "memory");
305	}	316	}
306		317
307	void cpu_halt(void);	318	void cpu_halt(void);
308	void cpu_sleep(void);	319	void cpu_sleep(void);
309	void asm_delay_loop(uint32_t t);	320	void asm_delay_loop(uint32_t t);
310		321
311	#endif	322	#endif
312		323
313	/** @}	324	/** @}
314	*/	325	*/
315		326

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(root)/trunk/kernel/arch/sparc64/include/asm.h – Rev 1787 → 1849