[Qemu-devel] [PATCH 2/3] spapr: Remove rtas_st_buffer_direct()

From: David Gibson <david@gibson.dropbear.id.au>
To: aik@ozlabs.ru
Cc: agraf@suse.de, qemu-devel@nongnu.org, mdroth@linux.vnet.ibm.com,
	qemu-ppc@nongnu.org, David Gibson <david@gibson.dropbear.id.au>
Subject: [Qemu-devel] [PATCH 2/3] spapr: Remove rtas_st_buffer_direct()
Date: Sat, 16 Jan 2016 12:14:45 +1100	[thread overview]
Message-ID: <1452906886-806-3-git-send-email-david@gibson.dropbear.id.au> (raw)
In-Reply-To: <1452906886-806-1-git-send-email-david@gibson.dropbear.id.au>

rtas_st_buffer_direct() is a not particularly useful wrapper around
cpu_physical_memory_write().  All the callers are in
rtas_ibm_configure_connector, where it's better handled by local helper.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/spapr_rtas.c    | 19 ++++++++++++-------
 include/hw/ppc/spapr.h |  8 --------
 2 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
index f4fb9ba..940509e 100644
--- a/hw/ppc/spapr_rtas.c
+++ b/hw/ppc/spapr_rtas.c
@@ -504,6 +504,13 @@ out:
 #define CC_VAL_DATA_OFFSET ((CC_IDX_PROP_DATA_OFFSET + 1) * 4)
 #define CC_WA_LEN 4096
 
+static void st_cc_buf(target_ulong addr, target_ulong offset,
+                      void *buf, size_t len)
+{
+    cpu_physical_memory_write(ppc64_phys_to_real(addr + offset),
+                              buf, MIN(len, CC_WA_LEN - offset));
+}
+
 static void rtas_ibm_configure_connector(PowerPCCPU *cpu,
                                          sPAPRMachineState *spapr,
                                          uint32_t token, uint32_t nargs,
@@ -526,6 +533,7 @@ static void rtas_ibm_configure_connector(PowerPCCPU *cpu,
     }
 
     wa_addr = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 0);
+    wa_addr = ppc64_phys_to_real(wa_addr);
 
     drc_index = rtas_ld(wa_addr, 0);
     drc = spapr_dr_connector_by_index(drc_index);
@@ -569,8 +577,7 @@ static void rtas_ibm_configure_connector(PowerPCCPU *cpu,
             /* provide the name of the next OF node */
             wa_offset = CC_VAL_DATA_OFFSET;
             rtas_st(wa_addr, CC_IDX_NODE_NAME_OFFSET, wa_offset);
-            rtas_st_buffer_direct(wa_addr + wa_offset, CC_WA_LEN - wa_offset,
-                                  (uint8_t *)name, strlen(name) + 1);
+            st_cc_buf(wa_addr, wa_offset, (uint8_t *)name, strlen(name) + 1);
             resp = SPAPR_DR_CC_RESPONSE_NEXT_CHILD;
             break;
         case FDT_END_NODE:
@@ -595,8 +602,7 @@ static void rtas_ibm_configure_connector(PowerPCCPU *cpu,
             /* provide the name of the next OF property */
             wa_offset = CC_VAL_DATA_OFFSET;
             rtas_st(wa_addr, CC_IDX_PROP_NAME_OFFSET, wa_offset);
-            rtas_st_buffer_direct(wa_addr + wa_offset, CC_WA_LEN - wa_offset,
-                                  (uint8_t *)name, strlen(name) + 1);
+            st_cc_buf(wa_addr, wa_offset, (uint8_t *)name, strlen(name) + 1);
 
             /* provide the length and value of the OF property. data gets
              * placed immediately after NULL terminator of the OF property's
@@ -605,9 +611,8 @@ static void rtas_ibm_configure_connector(PowerPCCPU *cpu,
             wa_offset += strlen(name) + 1,
             rtas_st(wa_addr, CC_IDX_PROP_LEN, prop_len);
             rtas_st(wa_addr, CC_IDX_PROP_DATA_OFFSET, wa_offset);
-            rtas_st_buffer_direct(wa_addr + wa_offset, CC_WA_LEN - wa_offset,
-                                  (uint8_t *)((struct fdt_property *)prop)->data,
-                                  prop_len);
+            st_cc_buf(wa_addr, wa_offset,
+                      (uint8_t *)((struct fdt_property *)prop)->data, prop_len);
             resp = SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY;
             break;
         case FDT_END:
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index ec9e7ea..d6f4eb4 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -505,14 +505,6 @@ static inline void rtas_st(target_ulong phys, int n, uint32_t val)
     stl_be_phys(&address_space_memory, ppc64_phys_to_real(phys + 4*n), val);
 }
 
-static inline void rtas_st_buffer_direct(target_ulong phys,
-                                         target_ulong phys_len,
-                                         uint8_t *buffer, uint16_t buffer_len)
-{
-    cpu_physical_memory_write(ppc64_phys_to_real(phys), buffer,
-                              MIN(buffer_len, phys_len));
-}
-
 typedef void (*spapr_rtas_fn)(PowerPCCPU *cpu, sPAPRMachineState *sm,
                               uint32_t token,
                               uint32_t nargs, target_ulong args,
-- 
2.5.0
