ARM: 6214/2: driver for the character LCD found in ARM refdesigns
[linux-2.6.git] / drivers / misc / sgi-xp / xp_uv.c
index d9f7ce2..a0d0932 100644 (file)
 
 #include <linux/device.h>
 #include <asm/uv/uv_hub.h>
+#if defined CONFIG_X86_64
+#include <asm/uv/bios.h>
+#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#include <asm/sn/sn_sal.h>
+#endif
 #include "../sgi-gru/grukservices.h"
 #include "xp.h"
 
@@ -27,12 +32,44 @@ xp_pa_uv(void *addr)
        return uv_gpa(addr);
 }
 
+/*
+ * Convert a global physical to socket physical address.
+ */
+static unsigned long
+xp_socket_pa_uv(unsigned long gpa)
+{
+       return uv_gpa_to_soc_phys_ram(gpa);
+}
+
+static enum xp_retval
+xp_remote_mmr_read(unsigned long dst_gpa, const unsigned long src_gpa,
+                  size_t len)
+{
+       int ret;
+       unsigned long *dst_va = __va(uv_gpa_to_soc_phys_ram(dst_gpa));
+
+       BUG_ON(!uv_gpa_in_mmr_space(src_gpa));
+       BUG_ON(len != 8);
+
+       ret = gru_read_gpa(dst_va, src_gpa);
+       if (ret == 0)
+               return xpSuccess;
+
+       dev_err(xp, "gru_read_gpa() failed, dst_gpa=0x%016lx src_gpa=0x%016lx "
+               "len=%ld\n", dst_gpa, src_gpa, len);
+       return xpGruCopyError;
+}
+
+
 static enum xp_retval
 xp_remote_memcpy_uv(unsigned long dst_gpa, const unsigned long src_gpa,
                    size_t len)
 {
        int ret;
 
+       if (uv_gpa_in_mmr_space(src_gpa))
+               return xp_remote_mmr_read(dst_gpa, src_gpa, len);
+
        ret = gru_copy_gpa(dst_gpa, src_gpa, len);
        if (ret == 0)
                return xpSuccess;
@@ -49,18 +86,80 @@ xp_cpu_to_nasid_uv(int cpuid)
        return UV_PNODE_TO_NASID(uv_cpu_to_pnode(cpuid));
 }
 
+static enum xp_retval
+xp_expand_memprotect_uv(unsigned long phys_addr, unsigned long size)
+{
+       int ret;
+
+#if defined CONFIG_X86_64
+       ret = uv_bios_change_memprotect(phys_addr, size, UV_MEMPROT_ALLOW_RW);
+       if (ret != BIOS_STATUS_SUCCESS) {
+               dev_err(xp, "uv_bios_change_memprotect(,, "
+                       "UV_MEMPROT_ALLOW_RW) failed, ret=%d\n", ret);
+               return xpBiosError;
+       }
+
+#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+       u64 nasid_array;
+
+       ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_1,
+                                  &nasid_array);
+       if (ret != 0) {
+               dev_err(xp, "sn_change_memprotect(,, "
+                       "SN_MEMPROT_ACCESS_CLASS_1,) failed ret=%d\n", ret);
+               return xpSalError;
+       }
+#else
+       #error not a supported configuration
+#endif
+       return xpSuccess;
+}
+
+static enum xp_retval
+xp_restrict_memprotect_uv(unsigned long phys_addr, unsigned long size)
+{
+       int ret;
+
+#if defined CONFIG_X86_64
+       ret = uv_bios_change_memprotect(phys_addr, size,
+                                       UV_MEMPROT_RESTRICT_ACCESS);
+       if (ret != BIOS_STATUS_SUCCESS) {
+               dev_err(xp, "uv_bios_change_memprotect(,, "
+                       "UV_MEMPROT_RESTRICT_ACCESS) failed, ret=%d\n", ret);
+               return xpBiosError;
+       }
+
+#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+       u64 nasid_array;
+
+       ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_0,
+                                  &nasid_array);
+       if (ret != 0) {
+               dev_err(xp, "sn_change_memprotect(,, "
+                       "SN_MEMPROT_ACCESS_CLASS_0,) failed ret=%d\n", ret);
+               return xpSalError;
+       }
+#else
+       #error not a supported configuration
+#endif
+       return xpSuccess;
+}
+
 enum xp_retval
 xp_init_uv(void)
 {
        BUG_ON(!is_uv());
 
        xp_max_npartitions = XP_MAX_NPARTITIONS_UV;
-       xp_partition_id = 0;    /* !!! not correct value */
-       xp_region_size = 0;     /* !!! not correct value */
+       xp_partition_id = sn_partition_id;
+       xp_region_size = sn_region_size;
 
        xp_pa = xp_pa_uv;
+       xp_socket_pa = xp_socket_pa_uv;
        xp_remote_memcpy = xp_remote_memcpy_uv;
        xp_cpu_to_nasid = xp_cpu_to_nasid_uv;
+       xp_expand_memprotect = xp_expand_memprotect_uv;
+       xp_restrict_memprotect = xp_restrict_memprotect_uv;
 
        return xpSuccess;
 }