ufshci: Enable WLUN scan

QEMU ufs device does not implement WLUN, so QUIRK is added.

Reviewed by:		imp (mentor)
Sponsored by:           Samsung Electronics
Differential Revision:	https://reviews.freebsd.org/D53921

4 files changed, 17 insertions, 2 deletions

diff --git a/sys/dev/ufshci/ufshci.h b/sys/dev/ufshci/ufshci.h
index 188f8c41def1..766d8de0535b 100644
--- a/sys/dev/ufshci/ufshci.h
+++ b/sys/dev/ufshci/ufshci.h
@@ -644,6 +644,14 @@ struct ufshci_completion {
 
 typedef void (*ufshci_cb_fn_t)(void *, const struct ufshci_completion *, bool);
 
+/* UFS 4.1, section 10.8.5 "Well Known Logical Unit Defined in UFS" */
+enum ufshci_well_known_luns {
+	UFSHCI_WLUN_REPORT_LUNS = 0x81,
+	UFSHCI_WLUN_BOOT = 0xb0,
+	UFSHCI_WLUN_RPMB = 0xc4,
+	UFSHCI_WLUN_UFS_DEVICE = 0xd0,
+};
+
 /*
  * UFS Spec 4.1, section 14.1 "UFS Descriptors"
  * All descriptors use big-endian byte ordering.
diff --git a/sys/dev/ufshci/ufshci_pci.c b/sys/dev/ufshci/ufshci_pci.c
index 992026fd4f4d..7f78e462db72 100644
--- a/sys/dev/ufshci/ufshci_pci.c
+++ b/sys/dev/ufshci/ufshci_pci.c
@@ -50,7 +50,8 @@ static struct _pcsid {
 	uint32_t quirks;
 } pci_ids[] = { { 0x131b36, "QEMU UFS Host Controller", UFSHCI_REF_CLK_19_2MHz,
 		    UFSHCI_QUIRK_IGNORE_UIC_POWER_MODE |
-			UFSHCI_QUIRK_NOT_SUPPORT_ABORT_TASK },
+			UFSHCI_QUIRK_NOT_SUPPORT_ABORT_TASK |
+			UFSHCI_QUIRK_SKIP_WELL_KNOWN_LUNS },
 	{ 0x98fa8086, "Intel Lakefield UFS Host Controller",
 	    UFSHCI_REF_CLK_19_2MHz,
 	    UFSHCI_QUIRK_LONG_PEER_PA_TACTIVATE |
diff --git a/sys/dev/ufshci/ufshci_private.h b/sys/dev/ufshci/ufshci_private.h
index ec388c06e248..3cee021880a8 100644
--- a/sys/dev/ufshci/ufshci_private.h
+++ b/sys/dev/ufshci/ufshci_private.h
@@ -266,6 +266,8 @@ struct ufshci_controller {
 	8 /* Need to change the number of lanes before changing HS-GEAR. */
 #define UFSHCI_QUIRK_NOT_SUPPORT_ABORT_TASK \
 	16 /* QEMU does not support Task Management Request */
+#define UFSHCI_QUIRK_SKIP_WELL_KNOWN_LUNS \
+	32 /* QEMU does not support Well known logical units*/
 
 	uint32_t ref_clk;
 
diff --git a/sys/dev/ufshci/ufshci_sim.c b/sys/dev/ufshci/ufshci_sim.c
index 1b80df089a46..db2e194b699b 100644
--- a/sys/dev/ufshci/ufshci_sim.c
+++ b/sys/dev/ufshci/ufshci_sim.c
@@ -231,11 +231,15 @@ ufshci_cam_action(struct cam_sim *sim, union ccb *ccb)
 		return;
 	case XPT_PATH_INQ: {
 		struct ccb_pathinq *cpi = &ccb->cpi;
+		uint32_t need_scan_wluns = 0;
+
+		if (!(ctrlr->quirks & UFSHCI_QUIRK_SKIP_WELL_KNOWN_LUNS))
+			need_scan_wluns = PIM_WLUNS;
 
 		cpi->version_num = 1;
 		cpi->hba_inquiry = PI_SDTR_ABLE | PI_TAG_ABLE;
 		cpi->target_sprt = 0;
-		cpi->hba_misc = PIM_UNMAPPED | PIM_NO_6_BYTE;
+		cpi->hba_misc = need_scan_wluns | PIM_UNMAPPED | PIM_NO_6_BYTE;
 		cpi->hba_eng_cnt = 0;
 		cpi->max_target = 0;
 		cpi->max_lun = ctrlr->max_lun_count;