Hi Andre,
On 30/01/17 18:31, Andre Przywara wrote:
+static int its_send_cmd_mapd(struct host_its *its, uint32_t deviceid,
+ int size, uint64_t itt_addr, bool valid)
+{
+ uint64_t cmd[4];
+
+ cmd[0] = GITS_CMD_MAPD | ((uint64_t)deviceid << 32);
+ cmd[1] = size & GENMASK(4, 0);
+ cmd[2] = itt_addr & GENMASK(51, 8);
+ if ( valid )
+ cmd[2] |= GITS_VALID_BIT;
+ cmd[3] = 0x00;
+
+ return its_send_command(its, cmd);
+}
+
/* Set up the (1:1) collection mapping for the given host CPU. */
int gicv3_its_setup_collection(int cpu)
{
@@ -293,6 +310,7 @@ int gicv3_its_init(struct host_its *hw_its)
reg = readq_relaxed(hw_its->its_base + GITS_TYPER);
if ( reg & GITS_TYPER_PTA )
hw_its->flags |= HOST_ITS_USES_PTA;
+ hw_its->itte_size = GITS_TYPER_ITT_SIZE(reg);
The GITS_TYPER.ITT_entry_size indicates the number of bytes minus one.
So you would have to add a + 1.
I would add it in the GITS_TYPER_ITT_SIZE macro to simplify it.
Cheers,
--
Julien Grall
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