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From: Eric Auger <eric.auger@redhat.com>
To: eric.auger.pro@gmail.com, eric.auger@redhat.com, maz@kernel.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
	qemu-devel@nongnu.org, qemu-arm@nongnu.org
Cc: andre.przywara@arm.com, thuth@redhat.com
Subject: [kvm-unit-tests PATCH v2 06/16] arm/arm64: ITS: Test BASER
Date: Fri, 10 Jan 2020 15:54:02 +0100
Message-ID: <20200110145412.14937-7-eric.auger@redhat.com> (raw)
In-Reply-To: <20200110145412.14937-1-eric.auger@redhat.com>

Add helper routines to parse and set up BASER registers.
Add a new test dedicated to BASER<n> accesses.

Signed-off-by: Eric Auger <eric.auger@redhat.com>

---

v2 -> v3:
- remove everything related to memory attributes
- s/dev_baser/coll_baser/ in report_info
- add extra line
- removed index filed in its_baser
---
 arm/gic.c                | 21 ++++++++++-
 arm/unittests.cfg        |  6 +++
 lib/arm/asm/gic-v3-its.h | 14 +++++++
 lib/arm/gic-v3-its.c     | 80 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 120 insertions(+), 1 deletion(-)

diff --git a/arm/gic.c b/arm/gic.c
index adeb981..3597ac3 100644
--- a/arm/gic.c
+++ b/arm/gic.c
@@ -531,11 +531,26 @@ static void test_its_introspection(void)
 		    typer->collid_bits);
 	report(typer->eventid_bits && typer->deviceid_bits &&
 	       typer->collid_bits, "ID spaces");
-	report(!typer->hw_collections, "collections only in ext memory");
 	report_info("Target address format %s",
 			typer->pta ? "Redist basse address" : "PE #");
 }
 
+static void test_its_baser(void)
+{
+	struct its_baser *dev_baser, *coll_baser;
+
+	if (!gicv3_its_base()) {
+		report_skip("No ITS, skip ...");
+		return;
+	}
+
+	dev_baser = its_lookup_baser(GITS_BASER_TYPE_DEVICE);
+	coll_baser = its_lookup_baser(GITS_BASER_TYPE_COLLECTION);
+	report(dev_baser && coll_baser, "detect device and collection BASER");
+	report_info("device baser entry_size = 0x%x", dev_baser->esz);
+	report_info("collection baser entry_size = 0x%x", coll_baser->esz);
+}
+
 int main(int argc, char **argv)
 {
 	if (!gic_init()) {
@@ -571,6 +586,10 @@ int main(int argc, char **argv)
 		report_prefix_push(argv[1]);
 		test_its_introspection();
 		report_prefix_pop();
+	} else if (strcmp(argv[1], "its-baser") == 0) {
+		report_prefix_push(argv[1]);
+		test_its_baser();
+		report_prefix_pop();
 	} else {
 		report_abort("Unknown subtest '%s'", argv[1]);
 	}
diff --git a/arm/unittests.cfg b/arm/unittests.cfg
index bd20460..2234a0f 100644
--- a/arm/unittests.cfg
+++ b/arm/unittests.cfg
@@ -128,6 +128,12 @@ smp = $MAX_SMP
 extra_params = -machine gic-version=3 -append 'its-introspection'
 groups = its
 
+[its-baser]
+file = gic.flat
+smp = $MAX_SMP
+extra_params = -machine gic-version=3 -append 'its-baser'
+groups = its
+
 # Test PSCI emulation
 [psci]
 file = psci.flat
diff --git a/lib/arm/asm/gic-v3-its.h b/lib/arm/asm/gic-v3-its.h
index 8816d57..5a4dfe9 100644
--- a/lib/arm/asm/gic-v3-its.h
+++ b/lib/arm/asm/gic-v3-its.h
@@ -65,9 +65,20 @@ struct its_typer {
 	bool virt_lpi;
 };
 
+struct its_baser {
+	int type;
+	size_t psz;
+	int nr_pages;
+	bool indirect;
+	phys_addr_t table_addr;
+	bool valid;
+	int esz;
+};
+
 struct its_data {
 	void *base;
 	struct its_typer typer;
+	struct its_baser baser[GITS_BASER_NR_REGS];
 };
 
 extern struct its_data its_data;
@@ -76,6 +87,9 @@ extern struct its_data its_data;
 
 extern void its_parse_typer(void);
 extern void its_init(void);
+extern int its_parse_baser(int i, struct its_baser *baser);
+extern void its_setup_baser(int i, struct its_baser *baser);
+extern struct its_baser *its_lookup_baser(int type);
 
 #endif /* !__ASSEMBLY__ */
 #endif /* _ASMARM_GIC_V3_ITS_H_ */
diff --git a/lib/arm/gic-v3-its.c b/lib/arm/gic-v3-its.c
index ce607bb..79946c3 100644
--- a/lib/arm/gic-v3-its.c
+++ b/lib/arm/gic-v3-its.c
@@ -4,6 +4,7 @@
  * This work is licensed under the terms of the GNU LGPL, version 2.
  */
 #include <asm/gic.h>
+#include <alloc_page.h>
 
 struct its_data its_data;
 
@@ -29,11 +30,90 @@ void its_parse_typer(void)
 	its_data.typer.phys_lpi = typer & GITS_TYPER_PLPIS;
 }
 
+int its_parse_baser(int i, struct its_baser *baser)
+{
+	void *reg_addr = gicv3_its_base() + GITS_BASER + i * 8;
+	u64 val = readq(reg_addr);
+
+	if (!val) {
+		memset(baser, 0, sizeof(*baser));
+		return -1;
+	}
+
+	baser->valid = val & GITS_BASER_VALID;
+	baser->indirect = val & GITS_BASER_INDIRECT;
+	baser->type = GITS_BASER_TYPE(val);
+	baser->esz = GITS_BASER_ENTRY_SIZE(val);
+	baser->nr_pages = GITS_BASER_NR_PAGES(val);
+	baser->table_addr = val & GITS_BASER_PHYS_ADDR_MASK;
+	switch (val & GITS_BASER_PAGE_SIZE_MASK) {
+	case GITS_BASER_PAGE_SIZE_4K:
+		baser->psz = SZ_4K;
+		break;
+	case GITS_BASER_PAGE_SIZE_16K:
+		baser->psz = SZ_16K;
+		break;
+	case GITS_BASER_PAGE_SIZE_64K:
+		baser->psz = SZ_64K;
+		break;
+	default:
+		baser->psz = SZ_64K;
+	}
+	return 0;
+}
+
+struct its_baser *its_lookup_baser(int type)
+{
+	int i;
+
+	for (i = 0; i < GITS_BASER_NR_REGS; i++) {
+		struct its_baser *baser = &its_data.baser[i];
+
+		if (baser->type == type)
+			return baser;
+	}
+	return NULL;
+}
+
 void its_init(void)
 {
+	int i;
+
 	if (!its_data.base)
 		return;
 
 	its_parse_typer();
+	for (i = 0; i < GITS_BASER_NR_REGS; i++)
+		its_parse_baser(i, &its_data.baser[i]);
+}
+
+void its_setup_baser(int i, struct its_baser *baser)
+{
+	unsigned long n = (baser->nr_pages * baser->psz) >> PAGE_SHIFT;
+	unsigned long order = is_power_of_2(n) ? fls(n) : fls(n) + 1;
+	u64 val;
+
+	baser->table_addr = (u64)virt_to_phys(alloc_pages(order));
+
+	val = ((u64)baser->table_addr					|
+		((u64)baser->type	<< GITS_BASER_TYPE_SHIFT)	|
+		((u64)(baser->esz - 1)	<< GITS_BASER_ENTRY_SIZE_SHIFT)	|
+		((baser->nr_pages - 1)	<< GITS_BASER_PAGES_SHIFT)	|
+		(u64)baser->indirect	<< 62				|
+		(u64)baser->valid	<< 63);
+
+	switch (baser->psz) {
+	case SZ_4K:
+		val |= GITS_BASER_PAGE_SIZE_4K;
+		break;
+	case SZ_16K:
+		val |= GITS_BASER_PAGE_SIZE_16K;
+		break;
+	case SZ_64K:
+		val |= GITS_BASER_PAGE_SIZE_64K;
+		break;
+	}
+
+	writeq(val, gicv3_its_base() + GITS_BASER + i * 8);
 }
 
-- 
2.20.1

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  parent reply index

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-10 14:53 [kvm-unit-tests PATCH v2 00/16] arm/arm64: Add ITS tests Eric Auger
2020-01-10 14:53 ` [kvm-unit-tests PATCH v2 01/16] libcflat: Add other size defines Eric Auger
2020-01-10 14:53 ` [kvm-unit-tests PATCH v2 02/16] arm: gic: Provide per-IRQ helper functions Eric Auger
2020-01-10 14:53 ` [kvm-unit-tests PATCH v2 03/16] arm/arm64: gic: Introduce setup_irq() helper Eric Auger
2020-01-13 16:53   ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 04/16] arm/arm64: gicv3: Add some re-distributor defines Eric Auger
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 05/16] arm/arm64: ITS: Introspection tests Eric Auger
2020-01-13 17:11   ` Andrew Jones
2020-01-13 17:33   ` Andrew Jones
2020-01-10 14:54 ` Eric Auger [this message]
2020-01-13 17:21   ` [kvm-unit-tests PATCH v2 06/16] arm/arm64: ITS: Test BASER Andrew Jones
2020-01-15 17:16     ` Auger Eric
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 07/16] arm/arm64: ITS: Set the LPI config and pending tables Eric Auger
2020-01-13 17:31   ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 08/16] arm/arm64: ITS: Init the command queue Eric Auger
2020-01-13 17:37   ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 09/16] arm/arm64: ITS: Enable/Disable LPIs at re-distributor level Eric Auger
2020-01-13 17:44   ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 10/16] arm/arm64: ITS: its_enable_defaults Eric Auger
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 11/16] arm/arm64: ITS: Device and collection Initialization Eric Auger
2020-01-13 17:48   ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 12/16] arm/arm64: ITS: commands Eric Auger
2020-01-13 18:00   ` Andrew Jones
2020-01-15 17:13     ` Auger Eric
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 13/16] arm/arm64: ITS: INT functional tests Eric Auger
2020-01-13 18:17   ` Andrew Jones
2020-01-15 17:11     ` Auger Eric
2020-01-16  8:06       ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 14/16] arm/run: Allow Migration tests Eric Auger
2020-01-13 18:40   ` Andrew Jones
2020-01-15 17:04     ` Auger Eric
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 15/16] arm/arm64: ITS: migration tests Eric Auger
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 16/16] arm/arm64: ITS: pending table migration test Eric Auger
2020-01-13 18:45   ` Andrew Jones
2020-01-15 17:06     ` Auger Eric

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