[PATCH 03/22] pHype specific stuff
From: Roland Dreier
Date: Fri Feb 17 2006 - 20:02:37 EST
From: Roland Dreier <rolandd@xxxxxxxxx>
It's not clear what the connection between hcp_phyp.c and hcp_phyp.h
really is -- they don't seem to very closely related.
Again, hcp_phyp.h has some rather large functions that belong in
a .c file and maybe shouldn't be inlined (although maybe the
generated assembly ends up being small because it's just
fiddling registers around).
For a change, hipz_galpa_load() and hipz_galpa_store() actually
look simple enough that they could probably become inline functions
in a header (and just kill hcp_phyp.c). This would also make the
comments about them being inline in ehca_galpa.h true.
Is ehca_galpha.h needed at all, or can it be folded into another
file? Why is its abstraction needed?
---
drivers/infiniband/hw/ehca/ehca_galpa.h | 74 +++++++
drivers/infiniband/hw/ehca/hcp_phyp.c | 81 +++++++
drivers/infiniband/hw/ehca/hcp_phyp.h | 338 +++++++++++++++++++++++++++++++
3 files changed, 493 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ehca_galpa.h b/drivers/infiniband/hw/ehca/ehca_galpa.h
new file mode 100644
index 0000000..d64115c
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_galpa.h
@@ -0,0 +1,74 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * pSeries interface definitions
+ *
+ * Authors: Waleri Fomin <fomin@xxxxxxxxxx>
+ * Christoph Raisch <raisch@xxxxxxxxxx>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ *
+ * $Id: ehca_galpa.h,v 1.6 2006/02/06 10:17:34 schickhj Exp $
+ */
+
+#ifndef __EHCA_GALPA_H__
+#define __EHCA_GALPA_H__
+
+/* eHCA page (mapped into p-memory)
+ resource to access eHCA register pages in CPU address space
+*/
+struct h_galpa {
+ u64 fw_handle;
+ /* for pSeries this is a 64bit memory address where
+ I/O memory is mapped into CPU address space (kv) */
+};
+
+/**
+ resource to access eHCA address space registers, all types
+*/
+struct h_galpas {
+ u32 pid; /*PID of userspace galpa checking */
+ struct h_galpa user; /* user space accessible resource,
+ set to 0 if unused */
+ struct h_galpa kernel; /* kernel space accessible resource,
+ set to 0 if unused */
+};
+/** @brief store value at offset into galpa, will be inline function
+ */
+void hipz_galpa_store(struct h_galpa galpa, u32 offset, u64 value);
+
+/** @brief return value from offset in galpa, will be inline function
+ */
+u64 hipz_galpa_load(struct h_galpa galpa, u32 offset);
+
+#endif /* __EHCA_GALPA_H__ */
diff --git a/drivers/infiniband/hw/ehca/hcp_phyp.c b/drivers/infiniband/hw/ehca/hcp_phyp.c
new file mode 100644
index 0000000..129e61b
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/hcp_phyp.c
@@ -0,0 +1,81 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * load store abstraction for ehca register access
+ *
+ * Authors: Christoph Raisch <raisch@xxxxxxxxxx>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ *
+ * $Id: hcp_phyp.c,v 1.10 2006/02/06 10:17:34 schickhj Exp $
+ */
+
+
+#define DEB_PREFIX "PHYP"
+
+#ifdef __KERNEL__
+#include "ehca_kernel.h"
+#include "hipz_hw.h"
+/* #include "hipz_structs.h" */
+/* TODO: still necessary */
+#include "ehca_classes.h"
+#else /* !__KERNEL__ */
+#include "ehca_utools.h"
+#include "ehca_galpa.h"
+#endif
+
+#ifndef EHCA_USERDRIVER /* TODO: is this correct */
+
+u64 hipz_galpa_load(struct h_galpa galpa, u32 offset)
+{
+ u64 addr = galpa.fw_handle + offset;
+ u64 out;
+ EDEB_EN(7, "addr=%lx offset=%x ", addr, offset);
+ out = *(u64 *) addr;
+ EDEB_EX(7, "addr=%lx value=%lx", addr, out);
+ return out;
+};
+
+void hipz_galpa_store(struct h_galpa galpa, u32 offset, u64 value)
+{
+ u64 addr = galpa.fw_handle + offset;
+ EDEB(7, "addr=%lx offset=%x value=%lx", addr,
+ offset, value);
+ *(u64 *) addr = value;
+#ifdef EHCA_USE_HCALL
+ /* hipz_galpa_load(galpa, offset); */
+ /* synchronize explicitly */
+#endif
+};
+
+#endif /* EHCA_USERDRIVER */
diff --git a/drivers/infiniband/hw/ehca/hcp_phyp.h b/drivers/infiniband/hw/ehca/hcp_phyp.h
new file mode 100644
index 0000000..c82fb4b
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/hcp_phyp.h
@@ -0,0 +1,338 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Firmware calls
+ *
+ * Authors: Christoph Raisch <raisch@xxxxxxxxxx>
+ * Waleri Fomin <fomin@xxxxxxxxxx>
+ * Gerd Bayer <gerd.bayer@xxxxxxxxxx>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ *
+ * $Id: hcp_phyp.h,v 1.16 2006/02/06 10:17:34 schickhj Exp $
+ */
+
+#ifndef __HCP_PHYP_H__
+#define __HCP_PHYP_H__
+
+#ifndef EHCA_USERDRIVER
+inline static int hcall_map_page(u64 physaddr, u64 * mapaddr)
+{
+ *mapaddr = (u64)(ioremap(physaddr, 4096));
+
+ EDEB(7, "ioremap physaddr=%lx mapaddr=%lx", physaddr, *mapaddr);
+ return 0;
+}
+
+inline static int hcall_unmap_page(u64 mapaddr)
+{
+ EDEB(7, "mapaddr=%lx", mapaddr);
+ iounmap((void *)(mapaddr));
+ return 0;
+}
+#else
+int hcall_map_page(u64 physaddr, u64 * mapaddr);
+int hcall_unmap_page(u64 mapaddr);
+#endif
+
+struct hcall {
+ u64 regs[11];
+};
+
+/**
+ * @brief returns time to wait in secs for the given long busy error code
+ */
+inline static u32 getLongBusyTimeSecs(int longBusyRetCode)
+{
+ switch (longBusyRetCode) {
+ case H_LongBusyOrder1msec:
+ return 1;
+ case H_LongBusyOrder10msec:
+ return 10;
+ case H_LongBusyOrder100msec:
+ return 100;
+ case H_LongBusyOrder1sec:
+ return 1000;
+ case H_LongBusyOrder10sec:
+ return 10000;
+ case H_LongBusyOrder100sec:
+ return 100000;
+ default:
+ return 1;
+ } /* eof switch */
+}
+
+inline static long plpar_hcall_7arg_7ret(unsigned long opcode,
+ unsigned long arg1, /* <R4 */
+ unsigned long arg2, /* <R5 */
+ unsigned long arg3, /* <R6 */
+ unsigned long arg4, /* <R7 */
+ unsigned long arg5, /* <R8 */
+ unsigned long arg6, /* <R9 */
+ unsigned long arg7, /* <R10 */
+ unsigned long *out1, /* <R4 */
+ unsigned long *out2, /* <R5 */
+ unsigned long *out3, /* <R6 */
+ unsigned long *out4, /* <R7 */
+ unsigned long *out5, /* <R8 */
+ unsigned long *out6, /* <R9 */
+ unsigned long *out7 /* <R10 */
+ )
+{
+ struct hcall hcall_in = {
+ .regs[0] = opcode,
+ .regs[1] = arg1,
+ .regs[2] = arg2,
+ .regs[3] = arg3,
+ .regs[4] = arg4,
+ .regs[5] = arg5,
+ .regs[6] = arg6,
+ .regs[7] = arg7 /*,
+ .regs[8]=arg8 */
+ };
+ struct hcall hcall = hcall_in;
+ int i;
+ long ret;
+ int sleep_msecs;
+ EDEB(7, "HCALL77_IN r3=%lx r4=%lx r5=%lx r6=%lx r7=%lx r8=%lx"
+ " r9=%lx r10=%lx r11=%lx", hcall.regs[0], hcall.regs[1],
+ hcall.regs[2], hcall.regs[3], hcall.regs[4], hcall.regs[5],
+ hcall.regs[6], hcall.regs[7], hcall.regs[8]);
+
+ /* if phype returns LongBusyXXX,
+ * we retry several times, but not forever */
+ for (i = 0; i < 5; i++) {
+ __asm__ __volatile__("mr 3,%10\n"
+ "mr 4,%11\n"
+ "mr 5,%12\n"
+ "mr 6,%13\n"
+ "mr 7,%14\n"
+ "mr 8,%15\n"
+ "mr 9,%16\n"
+ "mr 10,%17\n"
+ "mr 11,%18\n"
+ "mr 12,%19\n"
+ ".long 0x44000022\n"
+ "mr %0,3\n"
+ "mr %1,4\n"
+ "mr %2,5\n"
+ "mr %3,6\n"
+ "mr %4,7\n"
+ "mr %5,8\n"
+ "mr %6,9\n"
+ "mr %7,10\n"
+ "mr %8,11\n"
+ "mr %9,12\n":"=r"(hcall.regs[0]),
+ "=r"(hcall.regs[1]), "=r"(hcall.regs[2]),
+ "=r"(hcall.regs[3]), "=r"(hcall.regs[4]),
+ "=r"(hcall.regs[5]), "=r"(hcall.regs[6]),
+ "=r"(hcall.regs[7]), "=r"(hcall.regs[8]),
+ "=r"(hcall.regs[9])
+ :"r"(hcall.regs[0]), "r"(hcall.regs[1]),
+ "r"(hcall.regs[2]), "r"(hcall.regs[3]),
+ "r"(hcall.regs[4]), "r"(hcall.regs[5]),
+ "r"(hcall.regs[6]), "r"(hcall.regs[7]),
+ "r"(hcall.regs[8]), "r"(hcall.regs[9])
+ :"r0", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "cc",
+ "xer", "ctr", "lr", "cr0", "cr1", "cr5",
+ "cr6", "cr7");
+
+ EDEB(7, "HCALL77_OUT r3=%lx r4=%lx r5=%lx r6=%lx r7=%lx r8=%lx"
+ "r9=%lx r10=%lx r11=%lx", hcall.regs[0], hcall.regs[1],
+ hcall.regs[2], hcall.regs[3], hcall.regs[4], hcall.regs[5],
+ hcall.regs[6], hcall.regs[7], hcall.regs[8]);
+ ret = hcall.regs[0];
+ *out1 = hcall.regs[1];
+ *out2 = hcall.regs[2];
+ *out3 = hcall.regs[3];
+ *out4 = hcall.regs[4];
+ *out5 = hcall.regs[5];
+ *out6 = hcall.regs[6];
+ *out7 = hcall.regs[7];
+
+ if (!H_isLongBusy(ret)) {
+ if (ret<0) {
+ EDEB_ERR(4, "HCALL77_IN r3=%lx r4=%lx r5=%lx r6=%lx "
+ "r7=%lx r8=%lx r9=%lx r10=%lx",
+ opcode, arg1, arg2, arg3,
+ arg4, arg5, arg6, arg7);
+ EDEB_ERR(4,
+ "HCALL77_OUT r3=%lx r4=%lx r5=%lx "
+ "r6=%lx r7=%lx r8=%lx r9=%lx r10=%lx ",
+ hcall.regs[0], hcall.regs[1],
+ hcall.regs[2], hcall.regs[3],
+ hcall.regs[4], hcall.regs[5],
+ hcall.regs[6], hcall.regs[7]);
+ }
+ return ret;
+ }
+
+ sleep_msecs = getLongBusyTimeSecs(ret);
+ EDEB(7, "Got LongBusy return code from phype. "
+ "Sleep %dmsecs and retry...", sleep_msecs);
+ msleep_interruptible(sleep_msecs);
+ hcall = hcall_in;
+ } /* eof for */
+ EDEB_ERR(4, "HCALL77_OUT ret=H_Busy");
+ return H_Busy;
+}
+
+inline static long plpar_hcall_9arg_9ret(unsigned long opcode,
+ unsigned long arg1, /* <R4 */
+ unsigned long arg2, /* <R5 */
+ unsigned long arg3, /* <R6 */
+ unsigned long arg4, /* <R7 */
+ unsigned long arg5, /* <R8 */
+ unsigned long arg6, /* <R9 */
+ unsigned long arg7, /* <R10 */
+ unsigned long arg8, /* <R11 */
+ unsigned long arg9, /* <R12 */
+ unsigned long *out1, /* <R4 */
+ unsigned long *out2, /* <R5 */
+ unsigned long *out3, /* <R6 */
+ unsigned long *out4, /* <R7 */
+ unsigned long *out5, /* <R8 */
+ unsigned long *out6, /* <R9 */
+ unsigned long *out7, /* <R10 */
+ unsigned long *out8, /* <R11 */
+ unsigned long *out9 /* <R12 */
+ )
+{
+ struct hcall hcall_in = {
+ .regs[0] = opcode,
+ .regs[1] = arg1,
+ .regs[2] = arg2,
+ .regs[3] = arg3,
+ .regs[4] = arg4,
+ .regs[5] = arg5,
+ .regs[6] = arg6,
+ .regs[7] = arg7,
+ .regs[8] = arg8,
+ .regs[9] = arg9,
+ };
+ struct hcall hcall = hcall_in;
+ int i;
+ long ret;
+ int sleep_msecs;
+ EDEB(7,"HCALL99_IN r3=%lx r4=%lx r5=%lx r6=%lx r7=%lx r8=%lx r9=%lx"
+ " r10=%lx r11=%lx r12=%lx",
+ hcall.regs[0], hcall.regs[1], hcall.regs[2], hcall.regs[3],
+ hcall.regs[4], hcall.regs[5], hcall.regs[6], hcall.regs[7],
+ hcall.regs[8], hcall.regs[9]);
+
+ /* if phype returns LongBusyXXX, we retry several times, but not forever */
+ for (i = 0; i < 5; i++) {
+ __asm__ __volatile__("mr 3,%10\n"
+ "mr 4,%11\n"
+ "mr 5,%12\n"
+ "mr 6,%13\n"
+ "mr 7,%14\n"
+ "mr 8,%15\n"
+ "mr 9,%16\n"
+ "mr 10,%17\n"
+ "mr 11,%18\n"
+ "mr 12,%19\n"
+ ".long 0x44000022\n"
+ "mr %0,3\n"
+ "mr %1,4\n"
+ "mr %2,5\n"
+ "mr %3,6\n"
+ "mr %4,7\n"
+ "mr %5,8\n"
+ "mr %6,9\n"
+ "mr %7,10\n"
+ "mr %8,11\n"
+ "mr %9,12\n":"=r"(hcall.regs[0]),
+ "=r"(hcall.regs[1]), "=r"(hcall.regs[2]),
+ "=r"(hcall.regs[3]), "=r"(hcall.regs[4]),
+ "=r"(hcall.regs[5]), "=r"(hcall.regs[6]),
+ "=r"(hcall.regs[7]), "=r"(hcall.regs[8]),
+ "=r"(hcall.regs[9])
+ :"r"(hcall.regs[0]), "r"(hcall.regs[1]),
+ "r"(hcall.regs[2]), "r"(hcall.regs[3]),
+ "r"(hcall.regs[4]), "r"(hcall.regs[5]),
+ "r"(hcall.regs[6]), "r"(hcall.regs[7]),
+ "r"(hcall.regs[8]), "r"(hcall.regs[9])
+ :"r0", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "cc",
+ "xer", "ctr", "lr", "cr0", "cr1", "cr5",
+ "cr6", "cr7");
+
+ EDEB(7,"HCALL99_OUT r3=%lx r4=%lx r5=%lx r6=%lx r7=%lx r8=%lx "
+ "r9=%lx r10=%lx r11=%lx r12=%lx", hcall.regs[0],
+ hcall.regs[1], hcall.regs[2], hcall.regs[3], hcall.regs[4],
+ hcall.regs[5], hcall.regs[6], hcall.regs[7], hcall.regs[8],
+ hcall.regs[9]);
+ ret = hcall.regs[0];
+ *out1 = hcall.regs[1];
+ *out2 = hcall.regs[2];
+ *out3 = hcall.regs[3];
+ *out4 = hcall.regs[4];
+ *out5 = hcall.regs[5];
+ *out6 = hcall.regs[6];
+ *out7 = hcall.regs[7];
+ *out8 = hcall.regs[8];
+ *out9 = hcall.regs[9];
+
+ if (!H_isLongBusy(ret)) {
+ if (ret<0) {
+ EDEB_ERR(4, "HCALL99_IN r3=%lx r4=%lx r5=%lx r6=%lx "
+ "r7=%lx r8=%lx r9=%lx r10=%lx "
+ "r11=%lx r12=%lx",
+ opcode, arg1, arg2, arg3,
+ arg4, arg5, arg6, arg7,
+ arg8, arg9);
+ EDEB_ERR(4,
+ "HCALL99_OUT r3=%lx r4=%lx r5=%lx "
+ "r6=%lx r7=%lx r8=%lx r9=%lx r10=%lx "
+ "r11=%lx r12=lx",
+ hcall.regs[0], hcall.regs[1],
+ hcall.regs[2], hcall.regs[3],
+ hcall.regs[4], hcall.regs[5],
+ hcall.regs[6], hcall.regs[7],
+ hcall.regs[8]);
+ }
+ return ret;
+ }
+ sleep_msecs = getLongBusyTimeSecs(ret);
+ EDEB(7, "Got LongBusy return code from phype. "
+ "Sleep %dmsecs and retry...", sleep_msecs);
+ msleep_interruptible(sleep_msecs);
+ hcall = hcall_in;
+ } /* eof for */
+ EDEB_ERR(4, "HCALL99_OUT ret=H_Busy");
+ return H_Busy;
+}
+
+#endif
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