@@ -181,6 +181,21 @@ typedef struct CXLCCI {
uint64_t runtime;
QEMUTimer *timer;
} bg;
+
+ /* firmware update */
+ struct {
+ uint8_t active_slot;
+ uint8_t staged_slot;
+ bool slot[4];
+ uint8_t curr_action;
+ uint8_t curr_slot;
+ /* handle partial transfers */
+ bool transferring;
+ size_t prev_offset;
+ size_t prev_len;
+ time_t last_partxfer;
+ } fw;
+
size_t payload_max;
/* Pointer to device hosting the CCI */
DeviceState *d;
@@ -63,6 +63,8 @@ enum {
#define SET_INTERRUPT_POLICY 0x3
FIRMWARE_UPDATE = 0x02,
#define GET_INFO 0x0
+ #define TRANSFER 0x1
+ #define ACTIVATE 0x2
TIMESTAMP = 0x03,
#define GET 0x0
#define SET 0x1
@@ -626,6 +628,9 @@ static CXLRetCode cmd_infostat_bg_op_sts(const struct cxl_cmd *cmd,
return CXL_MBOX_SUCCESS;
}
+#define CXL_FW_SLOTS 2
+#define CXL_FW_SIZE 0x02000000 /* 32 mb */
+
/* CXL r3.1 Section 8.2.9.3.1: Get FW Info (Opcode 0200h) */
static CXLRetCode cmd_firmware_update_get_info(const struct cxl_cmd *cmd,
uint8_t *payload_in,
@@ -657,15 +662,192 @@ static CXLRetCode cmd_firmware_update_get_info(const struct cxl_cmd *cmd,
fw_info = (void *)payload_out;
memset(fw_info, 0, sizeof(*fw_info));
- fw_info->slots_supported = 2;
- fw_info->slot_info = BIT(0) | BIT(3);
- fw_info->caps = 0;
- pstrcpy(fw_info->fw_rev1, sizeof(fw_info->fw_rev1), "BWFW VERSION 0");
+ fw_info->slots_supported = CXL_FW_SLOTS;
+ fw_info->slot_info = (cci->fw.active_slot & 0x7) |
+ ((cci->fw.staged_slot & 0x7) << 3);
+ fw_info->caps = BIT(0); /* online update supported */
+
+ if (cci->fw.slot[0]) {
+ pstrcpy(fw_info->fw_rev1, sizeof(fw_info->fw_rev1), "BWFW VERSION 0");
+ }
+ if (cci->fw.slot[1]) {
+ pstrcpy(fw_info->fw_rev2, sizeof(fw_info->fw_rev2), "BWFW VERSION 1");
+ }
*len_out = sizeof(*fw_info);
return CXL_MBOX_SUCCESS;
}
+/* CXL r3.1 section 8.2.9.3.2: Transfer FW (Opcode 0201h) */
+#define CXL_FW_XFER_ALIGNMENT 128
+
+#define CXL_FW_XFER_ACTION_FULL 0x0
+#define CXL_FW_XFER_ACTION_INIT 0x1
+#define CXL_FW_XFER_ACTION_CONTINUE 0x2
+#define CXL_FW_XFER_ACTION_END 0x3
+#define CXL_FW_XFER_ACTION_ABORT 0x4
+
+static CXLRetCode cmd_firmware_update_transfer(const struct cxl_cmd *cmd,
+ uint8_t *payload_in,
+ size_t len,
+ uint8_t *payload_out,
+ size_t *len_out,
+ CXLCCI *cci)
+{
+ struct {
+ uint8_t action;
+ uint8_t slot;
+ uint8_t rsvd1[2];
+ uint32_t offset;
+ uint8_t rsvd2[0x78];
+ uint8_t data[];
+ } QEMU_PACKED *fw_transfer = (void *)payload_in;
+ size_t offset, length;
+
+ if (fw_transfer->action == CXL_FW_XFER_ACTION_ABORT) {
+ /*
+ * At this point there aren't any on-going transfers
+ * running in the bg - this is serialized before this
+ * call altogether. Just mark the state machine and
+ * disregard any other input.
+ */
+ cci->fw.transferring = false;
+ return CXL_MBOX_SUCCESS;
+ }
+
+ offset = fw_transfer->offset * CXL_FW_XFER_ALIGNMENT;
+ length = len - sizeof(*fw_transfer);
+ if (offset + length > CXL_FW_SIZE) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ if (cci->fw.transferring) {
+ if (fw_transfer->action == CXL_FW_XFER_ACTION_FULL ||
+ fw_transfer->action == CXL_FW_XFER_ACTION_INIT) {
+ return CXL_MBOX_FW_XFER_IN_PROGRESS;
+ }
+ /*
+ * Abort partitioned package transfer if over 30 secs
+ * between parts. As opposed to the explicit ABORT action,
+ * semantically treat this condition as an error - as
+ * if a part action were passed without a previous INIT.
+ */
+ if (difftime(time(NULL), cci->fw.last_partxfer) > 30.0) {
+ cci->fw.transferring = false;
+ return CXL_MBOX_INVALID_INPUT;
+ }
+ } else if (fw_transfer->action == CXL_FW_XFER_ACTION_CONTINUE ||
+ fw_transfer->action == CXL_FW_XFER_ACTION_END) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ /* allow back-to-back retransmission */
+ if ((offset != cci->fw.prev_offset || length != cci->fw.prev_len) &&
+ (fw_transfer->action == CXL_FW_XFER_ACTION_CONTINUE ||
+ fw_transfer->action == CXL_FW_XFER_ACTION_END)) {
+ /* verify no overlaps */
+ if (offset < cci->fw.prev_offset + cci->fw.prev_len) {
+ return CXL_MBOX_FW_XFER_OUT_OF_ORDER;
+ }
+ }
+
+ switch (fw_transfer->action) {
+ case CXL_FW_XFER_ACTION_FULL: /* ignores offset */
+ case CXL_FW_XFER_ACTION_END:
+ if (fw_transfer->slot == 0 ||
+ fw_transfer->slot == cci->fw.active_slot ||
+ fw_transfer->slot > CXL_FW_SLOTS) {
+ return CXL_MBOX_FW_INVALID_SLOT;
+ }
+
+ /* mark the slot used upon bg completion */
+ break;
+ case CXL_FW_XFER_ACTION_INIT:
+ if (offset != 0) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ cci->fw.transferring = true;
+ cci->fw.prev_offset = offset;
+ cci->fw.prev_len = length;
+ break;
+ case CXL_FW_XFER_ACTION_CONTINUE:
+ cci->fw.prev_offset = offset;
+ cci->fw.prev_len = length;
+ break;
+ default:
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ if (fw_transfer->action == CXL_FW_XFER_ACTION_FULL) {
+ cci->bg.runtime = 10 * 1000UL;
+ } else {
+ cci->bg.runtime = 2 * 1000UL;
+ }
+ /* keep relevant context for bg completion */
+ cci->fw.curr_action = fw_transfer->action;
+ cci->fw.curr_slot = fw_transfer->slot;
+ *len_out = 0;
+
+ return CXL_MBOX_BG_STARTED;
+}
+
+static void __do_firmware_xfer(CXLCCI *cci)
+{
+ switch (cci->fw.curr_action) {
+ case CXL_FW_XFER_ACTION_FULL:
+ case CXL_FW_XFER_ACTION_END:
+ cci->fw.slot[cci->fw.curr_slot - 1] = true;
+ cci->fw.transferring = false;
+ break;
+ case CXL_FW_XFER_ACTION_INIT:
+ case CXL_FW_XFER_ACTION_CONTINUE:
+ time(&cci->fw.last_partxfer);
+ break;
+ default:
+ break;
+ }
+}
+
+/* CXL r3.1 section 8.2.9.3.3: Activate FW (Opcode 0202h) */
+static CXLRetCode cmd_firmware_update_activate(const struct cxl_cmd *cmd,
+ uint8_t *payload_in,
+ size_t len,
+ uint8_t *payload_out,
+ size_t *len_out,
+ CXLCCI *cci)
+{
+ struct {
+ uint8_t action;
+ uint8_t slot;
+ } QEMU_PACKED *fw_activate = (void *)payload_in;
+ QEMU_BUILD_BUG_ON(sizeof(*fw_activate) != 0x2);
+
+ if (fw_activate->slot == 0 ||
+ fw_activate->slot == cci->fw.active_slot ||
+ fw_activate->slot > CXL_FW_SLOTS) {
+ return CXL_MBOX_FW_INVALID_SLOT;
+ }
+
+ /* ensure that an actual fw package is there */
+ if (!cci->fw.slot[fw_activate->slot - 1]) {
+ return CXL_MBOX_FW_INVALID_SLOT;
+ }
+
+ switch (fw_activate->action) {
+ case 0: /* online */
+ cci->fw.active_slot = fw_activate->slot;
+ break;
+ case 1: /* reset */
+ cci->fw.staged_slot = fw_activate->slot;
+ break;
+ default:
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ return CXL_MBOX_SUCCESS;
+}
+
/* CXL r3.1 Section 8.2.9.4.1: Get Timestamp (Opcode 0300h) */
static CXLRetCode cmd_timestamp_get(const struct cxl_cmd *cmd,
uint8_t *payload_in,
@@ -2501,6 +2683,10 @@ static const struct cxl_cmd cxl_cmd_set[256][256] = {
~0, CXL_MBOX_IMMEDIATE_CONFIG_CHANGE },
[FIRMWARE_UPDATE][GET_INFO] = { "FIRMWARE_UPDATE_GET_INFO",
cmd_firmware_update_get_info, 0, 0 },
+ [FIRMWARE_UPDATE][TRANSFER] = { "FIRMWARE_UPDATE_TRANSFER",
+ cmd_firmware_update_transfer, ~0, CXL_MBOX_BACKGROUND_OPERATION },
+ [FIRMWARE_UPDATE][ACTIVATE] = { "FIRMWARE_UPDATE_ACTIVATE",
+ cmd_firmware_update_activate, 2, CXL_MBOX_BACKGROUND_OPERATION },
[TIMESTAMP][GET] = { "TIMESTAMP_GET", cmd_timestamp_get, 0, 0 },
[TIMESTAMP][SET] = { "TIMESTAMP_SET", cmd_timestamp_set,
8, CXL_MBOX_IMMEDIATE_POLICY_CHANGE },
@@ -2629,7 +2815,9 @@ int cxl_process_cci_message(CXLCCI *cci, uint8_t set, uint8_t cmd,
h == cmd_media_get_poison_list ||
h == cmd_media_inject_poison ||
h == cmd_media_clear_poison ||
- h == cmd_sanitize_overwrite) {
+ h == cmd_sanitize_overwrite ||
+ h == cmd_firmware_update_transfer ||
+ h == cmd_firmware_update_activate) {
return CXL_MBOX_MEDIA_DISABLED;
}
}
@@ -2674,6 +2862,9 @@ static void bg_timercb(void *opaque)
cci->bg.complete_pct = 100;
cci->bg.ret_code = ret;
switch (cci->bg.opcode) {
+ case 0x0201: /* fw transfer */
+ __do_firmware_xfer(cci);
+ break;
case 0x4400: /* sanitize */
{
CXLType3Dev *ct3d = CXL_TYPE3(cci->d);
@@ -2745,6 +2936,10 @@ void cxl_init_cci(CXLCCI *cci, size_t payload_max)
cci->bg.runtime = 0;
cci->bg.timer = timer_new_ms(QEMU_CLOCK_VIRTUAL,
bg_timercb, cci);
+
+ memset(&cci->fw, 0, sizeof(cci->fw));
+ cci->fw.active_slot = 1;
+ cci->fw.slot[cci->fw.active_slot - 1] = true;
}
static void cxl_copy_cci_commands(CXLCCI *cci, const struct cxl_cmd (*cxl_cmds)[256])