[Qemu-devel] [PULL 3/3] hw/ide/atapi: Use the ldst API

[John Snow <jsnow@redhat.com>]

From: Philippe Mathieu-Daudé <philmd@redhat.com>

The big-endian load/store functions are already provided
by "qemu/bswap.h".
Avoid code duplication, use the generic API.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190808130454.9930-1-philmd@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
---
 hw/ide/atapi.c | 80 ++++++++++++++++++--------------------------------
 1 file changed, 28 insertions(+), 52 deletions(-)

diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c
index 1b0f66cc089..17a9d635d84 100644
--- a/hw/ide/atapi.c
+++ b/hw/ide/atapi.c
@@ -45,30 +45,6 @@ static void padstr8(uint8_t *buf, int buf_size, const char *src)
     }
 }
 
-static inline void cpu_to_ube16(uint8_t *buf, int val)
-{
-    buf[0] = val >> 8;
-    buf[1] = val & 0xff;
-}
-
-static inline void cpu_to_ube32(uint8_t *buf, unsigned int val)
-{
-    buf[0] = val >> 24;
-    buf[1] = val >> 16;
-    buf[2] = val >> 8;
-    buf[3] = val & 0xff;
-}
-
-static inline int ube16_to_cpu(const uint8_t *buf)
-{
-    return (buf[0] << 8) | buf[1];
-}
-
-static inline int ube32_to_cpu(const uint8_t *buf)
-{
-    return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
-}
-
 static void lba_to_msf(uint8_t *buf, int lba)
 {
     lba += 150;
@@ -485,7 +461,7 @@ static inline uint8_t ide_atapi_set_profile(uint8_t *buf, uint8_t *index,
     uint8_t *buf_profile = buf + 12; /* start of profiles */
 
     buf_profile += ((*index) * 4); /* start of indexed profile */
-    cpu_to_ube16 (buf_profile, profile);
+    stw_be_p(buf_profile, profile);
     buf_profile[2] = ((buf_profile[0] == buf[6]) && (buf_profile[1] == buf[7]));
 
     /* each profile adds 4 bytes to the response */
@@ -518,9 +494,9 @@ static int ide_dvd_read_structure(IDEState *s, int format,
                 buf[7] = 0;   /* default densities */
 
                 /* FIXME: 0x30000 per spec? */
-                cpu_to_ube32(buf + 8, 0); /* start sector */
-                cpu_to_ube32(buf + 12, total_sectors - 1); /* end sector */
-                cpu_to_ube32(buf + 16, total_sectors - 1); /* l0 end sector */
+                stl_be_p(buf + 8, 0); /* start sector */
+                stl_be_p(buf + 12, total_sectors - 1); /* end sector */
+                stl_be_p(buf + 16, total_sectors - 1); /* l0 end sector */
 
                 /* Size of buffer, not including 2 byte size field */
                 stw_be_p(buf, 2048 + 2);
@@ -839,7 +815,7 @@ static void cmd_get_configuration(IDEState *s, uint8_t *buf)
     }
 
     /* XXX: could result in alignment problems in some architectures */
-    max_len = ube16_to_cpu(buf + 7);
+    max_len = lduw_be_p(buf + 7);
 
     /*
      * XXX: avoid overflow for io_buffer if max_len is bigger than
@@ -859,16 +835,16 @@ static void cmd_get_configuration(IDEState *s, uint8_t *buf)
      * to use as current.  0 means there is no media
      */
     if (media_is_dvd(s)) {
-        cpu_to_ube16(buf + 6, MMC_PROFILE_DVD_ROM);
+        stw_be_p(buf + 6, MMC_PROFILE_DVD_ROM);
     } else if (media_is_cd(s)) {
-        cpu_to_ube16(buf + 6, MMC_PROFILE_CD_ROM);
+        stw_be_p(buf + 6, MMC_PROFILE_CD_ROM);
     }
 
     buf[10] = 0x02 | 0x01; /* persistent and current */
     len = 12; /* headers: 8 + 4 */
     len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_DVD_ROM);
     len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_CD_ROM);
-    cpu_to_ube32(buf, len - 4); /* data length */
+    stl_be_p(buf, len - 4); /* data length */
 
     ide_atapi_cmd_reply(s, len, max_len);
 }
@@ -878,7 +854,7 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf)
     int action, code;
     int max_len;
 
-    max_len = ube16_to_cpu(buf + 7);
+    max_len = lduw_be_p(buf + 7);
     action = buf[2] >> 6;
     code = buf[2] & 0x3f;
 
@@ -886,7 +862,7 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf)
     case 0: /* current values */
         switch(code) {
         case MODE_PAGE_R_W_ERROR: /* error recovery */
-            cpu_to_ube16(&buf[0], 16 - 2);
+            stw_be_p(&buf[0], 16 - 2);
             buf[2] = 0x70;
             buf[3] = 0;
             buf[4] = 0;
@@ -905,7 +881,7 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf)
             ide_atapi_cmd_reply(s, 16, max_len);
             break;
         case MODE_PAGE_AUDIO_CTL:
-            cpu_to_ube16(&buf[0], 24 - 2);
+            stw_be_p(&buf[0], 24 - 2);
             buf[2] = 0x70;
             buf[3] = 0;
             buf[4] = 0;
@@ -924,7 +900,7 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf)
             ide_atapi_cmd_reply(s, 24, max_len);
             break;
         case MODE_PAGE_CAPABILITIES:
-            cpu_to_ube16(&buf[0], 30 - 2);
+            stw_be_p(&buf[0], 30 - 2);
             buf[2] = 0x70;
             buf[3] = 0;
             buf[4] = 0;
@@ -946,11 +922,11 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf)
                 buf[14] |= 1 << 1;
             }
             buf[15] = 0x00; /* No volume & mute control, no changer */
-            cpu_to_ube16(&buf[16], 704); /* 4x read speed */
+            stw_be_p(&buf[16], 704); /* 4x read speed */
             buf[18] = 0; /* Two volume levels */
             buf[19] = 2;
-            cpu_to_ube16(&buf[20], 512); /* 512k buffer */
-            cpu_to_ube16(&buf[22], 704); /* 4x read speed current */
+            stw_be_p(&buf[20], 512); /* 512k buffer */
+            stw_be_p(&buf[22], 704); /* 4x read speed current */
             buf[24] = 0;
             buf[25] = 0;
             buf[26] = 0;
@@ -998,12 +974,12 @@ static void cmd_read(IDEState *s, uint8_t* buf)
     int nb_sectors, lba;
 
     if (buf[0] == GPCMD_READ_10) {
-        nb_sectors = ube16_to_cpu(buf + 7);
+        nb_sectors = lduw_be_p(buf + 7);
     } else {
-        nb_sectors = ube32_to_cpu(buf + 6);
+        nb_sectors = ldl_be_p(buf + 6);
     }
 
-    lba = ube32_to_cpu(buf + 2);
+    lba = ldl_be_p(buf + 2);
     if (nb_sectors == 0) {
         ide_atapi_cmd_ok(s);
         return;
@@ -1017,7 +993,7 @@ static void cmd_read_cd(IDEState *s, uint8_t* buf)
     int nb_sectors, lba, transfer_request;
 
     nb_sectors = (buf[6] << 16) | (buf[7] << 8) | buf[8];
-    lba = ube32_to_cpu(buf + 2);
+    lba = ldl_be_p(buf + 2);
 
     if (nb_sectors == 0) {
         ide_atapi_cmd_ok(s);
@@ -1057,7 +1033,7 @@ static void cmd_seek(IDEState *s, uint8_t* buf)
     unsigned int lba;
     uint64_t total_sectors = s->nb_sectors >> 2;
 
-    lba = ube32_to_cpu(buf + 2);
+    lba = ldl_be_p(buf + 2);
     if (lba >= total_sectors) {
         ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
         return;
@@ -1098,15 +1074,15 @@ static void cmd_start_stop_unit(IDEState *s, uint8_t* buf)
 
 static void cmd_mechanism_status(IDEState *s, uint8_t* buf)
 {
-    int max_len = ube16_to_cpu(buf + 8);
+    int max_len = lduw_be_p(buf + 8);
 
-    cpu_to_ube16(buf, 0);
+    stw_be_p(buf, 0);
     /* no current LBA */
     buf[2] = 0;
     buf[3] = 0;
     buf[4] = 0;
     buf[5] = 1;
-    cpu_to_ube16(buf + 6, 0);
+    stw_be_p(buf + 6, 0);
     ide_atapi_cmd_reply(s, 8, max_len);
 }
 
@@ -1116,7 +1092,7 @@ static void cmd_read_toc_pma_atip(IDEState *s, uint8_t* buf)
     int max_len;
     uint64_t total_sectors = s->nb_sectors >> 2;
 
-    max_len = ube16_to_cpu(buf + 7);
+    max_len = lduw_be_p(buf + 7);
     format = buf[9] >> 6;
     msf = (buf[1] >> 1) & 1;
     start_track = buf[6];
@@ -1154,15 +1130,15 @@ static void cmd_read_cdvd_capacity(IDEState *s, uint8_t* buf)
     uint64_t total_sectors = s->nb_sectors >> 2;
 
     /* NOTE: it is really the number of sectors minus 1 */
-    cpu_to_ube32(buf, total_sectors - 1);
-    cpu_to_ube32(buf + 4, 2048);
+    stl_be_p(buf, total_sectors - 1);
+    stl_be_p(buf + 4, 2048);
     ide_atapi_cmd_reply(s, 8, 8);
 }
 
 static void cmd_read_disc_information(IDEState *s, uint8_t* buf)
 {
     uint8_t type = buf[1] & 7;
-    uint32_t max_len = ube16_to_cpu(buf + 7);
+    uint32_t max_len = lduw_be_p(buf + 7);
 
     /* Types 1/2 are only defined for Blu-Ray.  */
     if (type != 0) {
@@ -1196,7 +1172,7 @@ static void cmd_read_dvd_structure(IDEState *s, uint8_t* buf)
     int format = buf[7];
     int ret;
 
-    max_len = ube16_to_cpu(buf + 8);
+    max_len = lduw_be_p(buf + 8);
 
     if (format < 0xff) {
         if (media_is_cd(s)) {
-- 
2.21.0