[POWERPC] Celleb: interfaces to the hypervisor

This patch creates Celleb platform dependent files which add
interfaces to call hypervisor.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 507 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/celleb/beat_wrapper.h b/arch/powerpc/platforms/celleb/beat_wrapper.h
new file mode 100644
index 000000000000..76ea0a6a9011
--- /dev/null
+++ b/arch/powerpc/platforms/celleb/beat_wrapper.h
@@ -0,0 +1,220 @@
+/*
+ * Beat hypervisor call I/F
+ *
+ * (C) Copyright 2007 TOSHIBA CORPORATION
+ *
+ * This code is based on arch/powerpc/platforms/pseries/plpar_wrapper.h.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef BEAT_HCALL
+#include "beat_syscall.h"
+
+/* defined in hvCall.S */
+extern s64 beat_hcall_norets(u64 opcode, ...);
+extern s64 beat_hcall_norets8(u64 opcode, u64 arg1, u64 arg2, u64 arg3,
+        u64 arg4, u64 arg5, u64 arg6, u64 arg7, u64 arg8);
+extern s64 beat_hcall1(u64 opcode, u64 retbuf[1], ...);
+extern s64 beat_hcall2(u64 opcode, u64 retbuf[2], ...);
+extern s64 beat_hcall3(u64 opcode, u64 retbuf[3], ...);
+extern s64 beat_hcall4(u64 opcode, u64 retbuf[4], ...);
+extern s64 beat_hcall5(u64 opcode, u64 retbuf[5], ...);
+extern s64 beat_hcall6(u64 opcode, u64 retbuf[6], ...);
+
+static inline s64 beat_downcount_of_interrupt(u64 plug_id)
+{
+        return beat_hcall_norets(HV_downcount_of_interrupt, plug_id);
+}
+
+static inline s64 beat_set_interrupt_mask(u64 index,
+        u64 val0, u64 val1, u64 val2, u64 val3)
+{
+        return beat_hcall_norets(HV_set_interrupt_mask, index,
+               val0, val1, val2, val3);
+}
+
+static inline s64 beat_destruct_irq_plug(u64 plug_id)
+{
+        return beat_hcall_norets(HV_destruct_irq_plug, plug_id);
+}
+
+static inline s64 beat_construct_and_connect_irq_plug(u64 plug_id,
+        u64 outlet_id)
+{
+        return beat_hcall_norets(HV_construct_and_connect_irq_plug, plug_id,
+               outlet_id);
+}
+
+static inline s64 beat_detect_pending_interrupts(u64 index, u64 *retbuf)
+{
+        return beat_hcall4(HV_detect_pending_interrupts, retbuf, index);
+}
+
+static inline s64 beat_pause(u64 style)
+{
+        return beat_hcall_norets(HV_pause, style);
+}
+
+static inline s64 beat_read_htab_entries(u64 htab_id, u64 index, u64 *retbuf)
+{
+        return beat_hcall5(HV_read_htab_entries, retbuf, htab_id, index);
+}
+
+static inline s64 beat_insert_htab_entry(u64 htab_id, u64 group,
+        u64 bitmask, u64 hpte_v, u64 hpte_r, u64 *slot)
+{
+        u64 dummy[3];
+        s64 ret;
+
+        ret = beat_hcall3(HV_insert_htab_entry, dummy, htab_id, group,
+                bitmask, hpte_v, hpte_r);
+        *slot = dummy[0];
+        return ret;
+}
+
+static inline s64 beat_write_htab_entry(u64 htab_id, u64 slot,
+        u64 hpte_v, u64 hpte_r, u64 mask_v, u64 mask_r,
+        u64 *ret_v, u64 *ret_r)
+{
+        u64 dummy[2];
+        s64 ret;
+
+        ret = beat_hcall2(HV_write_htab_entry, dummy, htab_id, slot,
+                hpte_v, hpte_r, mask_v, mask_r);
+        *ret_v = dummy[0];
+        *ret_r = dummy[1];
+        return ret;
+}
+
+static inline void beat_shutdown_logical_partition(u64 code)
+{
+        (void)beat_hcall_norets(HV_shutdown_logical_partition, code);
+}
+
+static inline s64 beat_rtc_write(u64 time_from_epoch)
+{
+        return beat_hcall_norets(HV_rtc_write, time_from_epoch);
+}
+
+static inline s64 beat_rtc_read(u64 *time_from_epoch)
+{
+        u64 dummy[1];
+        s64 ret;
+
+        ret = beat_hcall1(HV_rtc_read, dummy);
+        *time_from_epoch = dummy[0];
+        return ret;
+}
+
+#define BEAT_NVRW_CNT   (sizeof(u64) * 6)
+
+static inline s64 beat_eeprom_write(u64 index, u64 length, u8 *buffer)
+{
+        u64     b[6];
+
+        if (length > BEAT_NVRW_CNT)
+                return -1;
+        memcpy(b, buffer, sizeof(b));
+        return beat_hcall_norets8(HV_eeprom_write, index, length,
+                b[0], b[1], b[2], b[3], b[4], b[5]);
+}
+
+static inline s64 beat_eeprom_read(u64 index, u64 length, u8 *buffer)
+{
+        u64     b[6];
+        s64     ret;
+
+        if (length > BEAT_NVRW_CNT)
+                return -1;
+        ret = beat_hcall6(HV_eeprom_read, b, index, length);
+        memcpy(buffer, b, length);
+        return ret;
+}
+
+static inline s64 beat_set_dabr(u64 value, u64 style)
+{
+        return beat_hcall_norets(HV_set_dabr, value, style);
+}
+
+static inline s64 beat_get_characters_from_console(u64 termno, u64 *len,
+        u8 *buffer)
+{
+        u64 dummy[3];
+        s64 ret;
+
+        ret = beat_hcall3(HV_get_characters_from_console, dummy, termno, len);
+        *len = dummy[0];
+        memcpy(buffer, dummy + 1, *len);
+        return ret;
+}
+
+static inline s64 beat_put_characters_to_console(u64 termno, u64 len,
+        u8 *buffer)
+{
+        u64 b[2];
+
+        memcpy(b, buffer, len);
+        return beat_hcall_norets(HV_put_characters_to_console, termno, len,                                      b[0], b[1]);
+}
+
+static inline s64 beat_get_spe_privileged_state_1_registers(
+                u64 id, u64 offsetof, u64 *value)
+{
+        u64 dummy[1];
+        s64 ret;
+
+        ret = beat_hcall1(HV_get_spe_privileged_state_1_registers, dummy, id,
+                offsetof);
+        *value = dummy[0];
+        return ret;
+}
+
+static inline s64 beat_set_irq_mask_for_spe(u64 id, u64 class, u64 mask)
+{
+        return beat_hcall_norets(HV_set_irq_mask_for_spe, id, class, mask);
+}
+
+static inline s64 beat_clear_interrupt_status_of_spe(u64 id, u64 class,
+        u64 mask)
+{
+        return beat_hcall_norets(HV_clear_interrupt_status_of_spe,
+                id, class, mask);
+}
+
+static inline s64 beat_set_spe_privileged_state_1_registers(
+                u64 id, u64 offsetof, u64 value)
+{
+        return beat_hcall_norets(HV_set_spe_privileged_state_1_registers,
+                id, offsetof, value);
+}
+
+static inline s64 beat_get_interrupt_status_of_spe(u64 id, u64 class, u64 *val)
+{
+        u64 dummy[1];
+        s64 ret;
+
+        ret = beat_hcall1(HV_get_interrupt_status_of_spe, dummy, id, class);
+        *val = dummy[0];
+        return ret;
+}
+
+static inline s64 beat_put_iopte(u64 ioas_id, u64 io_addr, u64 real_addr,
+        u64 ioid, u64 flags)
+{
+        return beat_hcall_norets(HV_put_iopte, ioas_id, io_addr, real_addr,
+                ioid, flags);
+}
+
+#endif
diff --git a/arch/powerpc/platforms/celleb/hvCall.S b/arch/powerpc/platforms/celleb/hvCall.S
new file mode 100644
index 000000000000..74c817448948
--- /dev/null
+++ b/arch/powerpc/platforms/celleb/hvCall.S
@@ -0,0 +1,287 @@
+/*
+ * Beat hypervisor call I/F
+ *
+ * (C) Copyright 2007 TOSHIBA CORPORATION
+ *
+ * This code is based on arch/powerpc/platforms/pseries/hvCall.S.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <asm/ppc_asm.h>
+
+#define STK_PARM(i)     (48 + ((i)-3)*8)
+
+/* Not implemented on Beat, now */
+#define HCALL_INST_PRECALL
+#define HCALL_INST_POSTCALL
+
+        .text
+
+#define HVSC    .long   0x44000022
+
+/* Note: takes only 7 input parameters at maximum */
+_GLOBAL(beat_hcall_norets)
+        HMT_MEDIUM
+
+        mfcr    r0
+        stw     r0,8(r1)
+
+        HCALL_INST_PRECALL
+
+        mr      r11,r3
+        mr      r3,r4
+        mr      r4,r5
+        mr      r5,r6
+        mr      r6,r7
+        mr      r7,r8
+        mr      r8,r9
+
+        HVSC                            /* invoke the hypervisor */
+
+        HCALL_INST_POSTCALL
+
+        lwz     r0,8(r1)
+        mtcrf   0xff,r0
+
+        blr                             /* return r3 = status */
+
+/* Note: takes 8 input parameters at maximum */
+_GLOBAL(beat_hcall_norets8)
+        HMT_MEDIUM
+
+        mfcr    r0
+        stw     r0,8(r1)
+
+        HCALL_INST_PRECALL
+
+        mr      r11,r3
+        mr      r3,r4
+        mr      r4,r5
+        mr      r5,r6
+        mr      r6,r7
+        mr      r7,r8
+        mr      r8,r9
+        ld      r10,STK_PARM(r10)(r1)
+
+        HVSC                            /* invoke the hypervisor */
+
+        HCALL_INST_POSTCALL
+
+        lwz     r0,8(r1)
+        mtcrf   0xff,r0
+
+        blr                             /* return r3 = status */
+
+/* Note: takes only 6 input parameters, 1 output parameters at maximum */
+_GLOBAL(beat_hcall1)
+        HMT_MEDIUM
+
+        mfcr    r0
+        stw     r0,8(r1)
+
+        HCALL_INST_PRECALL
+
+        std     r4,STK_PARM(r4)(r1)     /* save ret buffer */
+
+        mr      r11,r3
+        mr      r3,r5
+        mr      r4,r6
+        mr      r5,r7
+        mr      r6,r8
+        mr      r7,r9
+        mr      r8,r10
+
+        HVSC                            /* invoke the hypervisor */
+
+        HCALL_INST_POSTCALL
+
+        ld      r12,STK_PARM(r4)(r1)
+        std     r4,  0(r12)
+
+        lwz     r0,8(r1)
+        mtcrf   0xff,r0
+
+        blr                             /* return r3 = status */
+
+/* Note: takes only 6 input parameters, 2 output parameters at maximum */
+_GLOBAL(beat_hcall2)
+        HMT_MEDIUM
+
+        mfcr    r0
+        stw     r0,8(r1)
+
+        HCALL_INST_PRECALL
+
+        std     r4,STK_PARM(r4)(r1)     /* save ret buffer */
+
+        mr      r11,r3
+        mr      r3,r5
+        mr      r4,r6
+        mr      r5,r7
+        mr      r6,r8
+        mr      r7,r9
+        mr      r8,r10
+
+        HVSC                            /* invoke the hypervisor */
+
+        HCALL_INST_POSTCALL
+
+        ld      r12,STK_PARM(r4)(r1)
+        std     r4,  0(r12)
+        std     r5,  8(r12)
+
+        lwz     r0,8(r1)
+        mtcrf   0xff,r0
+
+        blr                             /* return r3 = status */
+
+/* Note: takes only 6 input parameters, 3 output parameters at maximum */
+_GLOBAL(beat_hcall3)
+        HMT_MEDIUM
+
+        mfcr    r0
+        stw     r0,8(r1)
+
+        HCALL_INST_PRECALL
+
+        std     r4,STK_PARM(r4)(r1)     /* save ret buffer */
+
+        mr      r11,r3
+        mr      r3,r5
+        mr      r4,r6
+        mr      r5,r7
+        mr      r6,r8
+        mr      r7,r9
+        mr      r8,r10
+
+        HVSC                            /* invoke the hypervisor */
+
+        HCALL_INST_POSTCALL
+
+        ld      r12,STK_PARM(r4)(r1)
+        std     r4,  0(r12)
+        std     r5,  8(r12)
+        std     r6, 16(r12)
+
+        lwz     r0,8(r1)
+        mtcrf   0xff,r0
+
+        blr                             /* return r3 = status */
+
+/* Note: takes only 6 input parameters, 4 output parameters at maximum */
+_GLOBAL(beat_hcall4)
+        HMT_MEDIUM
+
+        mfcr    r0
+        stw     r0,8(r1)
+
+        HCALL_INST_PRECALL
+
+        std     r4,STK_PARM(r4)(r1)     /* save ret buffer */
+
+        mr      r11,r3
+        mr      r3,r5
+        mr      r4,r6
+        mr      r5,r7
+        mr      r6,r8
+        mr      r7,r9
+        mr      r8,r10
+
+        HVSC                            /* invoke the hypervisor */
+
+        HCALL_INST_POSTCALL
+
+        ld      r12,STK_PARM(r4)(r1)
+        std     r4,  0(r12)
+        std     r5,  8(r12)
+        std     r6, 16(r12)
+        std     r7, 24(r12)
+
+        lwz     r0,8(r1)
+        mtcrf   0xff,r0
+
+        blr                             /* return r3 = status */
+
+/* Note: takes only 6 input parameters, 5 output parameters at maximum */
+_GLOBAL(beat_hcall5)
+        HMT_MEDIUM
+
+        mfcr    r0
+        stw     r0,8(r1)
+
+        HCALL_INST_PRECALL
+
+        std     r4,STK_PARM(r4)(r1)     /* save ret buffer */
+
+        mr      r11,r3
+        mr      r3,r5
+        mr      r4,r6
+        mr      r5,r7
+        mr      r6,r8
+        mr      r7,r9
+        mr      r8,r10
+
+        HVSC                            /* invoke the hypervisor */
+
+        HCALL_INST_POSTCALL
+
+        ld      r12,STK_PARM(r4)(r1)
+        std     r4,  0(r12)
+        std     r5,  8(r12)
+        std     r6, 16(r12)
+        std     r7, 24(r12)
+        std     r8, 32(r12)
+
+        lwz     r0,8(r1)
+        mtcrf   0xff,r0
+
+        blr                             /* return r3 = status */
+
+/* Note: takes only 6 input parameters, 6 output parameters at maximum */
+_GLOBAL(beat_hcall6)
+        HMT_MEDIUM
+
+        mfcr    r0
+        stw     r0,8(r1)
+
+        HCALL_INST_PRECALL
+
+        std     r4,STK_PARM(r4)(r1)     /* save ret buffer */
+
+        mr      r11,r3
+        mr      r3,r5
+        mr      r4,r6
+        mr      r5,r7
+        mr      r6,r8
+        mr      r7,r9
+        mr      r8,r10
+
+        HVSC                            /* invoke the hypervisor */
+
+        HCALL_INST_POSTCALL
+
+        ld      r12,STK_PARM(r4)(r1)
+        std     r4,  0(r12)
+        std     r5,  8(r12)
+        std     r6, 16(r12)
+        std     r7, 24(r12)
+        std     r8, 32(r12)
+        std     r9, 40(r12)
+
+        lwz     r0,8(r1)
+        mtcrf   0xff,r0
+
+        blr                             /* return r3 = status */