i386 param.h

Change-Id: I880dbe83ad611cc0736d2a76a9f67b133f2fc025

diff --git a/sys/arch/i386/include/param.h b/sys/arch/i386/include/param.h
index 7fc1226dfafaab981c1e56bd8fe5f521c258d1c9..75c6e60b9500ac470374415d8e0403fd418862f0 100644 (file)
--- a/sys/arch/i386/include/param.h
+++ b/sys/arch/i386/include/param.h
@@ -41,6 +41,13 @@
  * Machine dependent constants for Intel 386.
  */
 
+/*
+ * MAXCPUS must be defined before cpu.h inclusion.  Note: i386 might
+ * support more CPUs, but due to the limited KVA space available on
+ * i386, such support would be inefficient.  Use amd64 instead.
+ */
+#define        MAXCPUS         32
+
 #ifdef _KERNEL
 #include <machine/cpu.h>
 #endif
@@ -58,10 +65,6 @@
 #define        PGOFSET         (NBPG-1)        /* byte offset into page */
 #define        NPTEPG          (NBPG/(sizeof (pt_entry_t)))
 
-#ifndef MAXPHYS
-#define MAXPHYS                (64 * 1024)     /* max raw I/O transfer size */
-#endif
-
 #if defined(_KERNEL_OPT)
 #include "opt_kernbase.h"
 #endif /* defined(_KERNEL_OPT) */
@@ -70,8 +73,70 @@
 #error "You should only re-define KERNBASE"
 #endif
 
-#define DEV_BSHIFT      9               /* log2(DEV_BSIZE) */
-#define DEV_BSIZE       (1 << DEV_BSHIFT)
+#ifndef        KERNBASE
+#define        KERNBASE        0xc0000000UL    /* start of kernel virtual space */
+#endif
+
+#define        KERNTEXTOFF     (KERNBASE + 0x100000) /* start of kernel text */
+#define        BTOPKERNBASE    (KERNBASE >> PGSHIFT)
+
+#define        DEV_BSHIFT      9               /* log2(DEV_BSIZE) */
+#define        DEV_BSIZE       (1 << DEV_BSHIFT)
+#define        BLKDEV_IOSIZE   2048
+#ifndef        MAXPHYS
+#define        MAXPHYS         (64 * 1024)     /* max raw I/O transfer size */
+#endif
+
+#define        SSIZE           1               /* initial stack size/NBPG */
+#define        SINCR           1               /* increment of stack/NBPG */
+
+#ifndef UPAGES
+# ifdef DIAGNOSTIC
+#  define      UPAGES          3       /* 2 + 1 page for redzone */
+# else
+#  define      UPAGES          2       /* normal pages of u-area */
+# endif /* DIAGNOSTIC */
+#endif /* !defined(UPAGES) */
+#define        USPACE          (UPAGES * NBPG) /* total size of u-area */
+#define        INTRSTACKSIZE   8192
+
+#ifndef MSGBUFSIZE
+#define MSGBUFSIZE     8*NBPG          /* default message buffer size */
+#endif
+
+/*
+ * Constants related to network buffer management.
+ * MCLBYTES must be no larger than NBPG (the software page size), and,
+ * on machines that exchange pages of input or output buffers with mbuf
+ * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
+ * of the hardware page size.
+ */
+#define        MSIZE           256             /* size of an mbuf */
+
+#ifndef MCLSHIFT
+#define        MCLSHIFT        11              /* convert bytes to m_buf clusters */
+                                       /* 2K cluster can hold Ether frame */
+#endif /* MCLSHIFT */
+
+#define        MCLBYTES        (1 << MCLSHIFT) /* size of a m_buf cluster */
+
+#ifndef NMBCLUSTERS_MAX
+#define        NMBCLUSTERS_MAX (0x2000000 / MCLBYTES)  /* Limit to 64MB for clusters */
+#endif
+
+#ifndef NFS_RSIZE
+#define NFS_RSIZE      32768
+#endif
+#ifndef NFS_WSIZE
+#define NFS_WSIZE      32768
+#endif
+
+/*
+ * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
+ * logical pages.
+ */
+#define        NKMEMPAGES_MIN_DEFAULT  ((16 * 1024 * 1024) >> PAGE_SHIFT)
+#define        NKMEMPAGES_MAX_DEFAULT  ((360 * 1024 * 1024) >> PAGE_SHIFT)
 
 /*
  * Mach derived conversion macros