* [PATCH v3 1/4] hw/block/nvme: Update specification URL
2020-06-30 11:04 [PATCH v3 0/4] hw/block/nvme: Fix I/O BAR structure Philippe Mathieu-Daudé
@ 2020-06-30 11:04 ` Philippe Mathieu-Daudé
2020-07-08 22:11 ` Dmitry Fomichev
2020-06-30 11:04 ` [PATCH v3 2/4] hw/block/nvme: Use QEMU_PACKED on hardware/packet structures Philippe Mathieu-Daudé
` (3 subsequent siblings)
4 siblings, 1 reply; 14+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-06-30 11:04 UTC (permalink / raw)
To: qemu-devel
Cc: Kevin Wolf, qemu-block, Klaus Jensen, Maxim Levitsky,
Keith Busch, Max Reitz, Philippe Mathieu-Daudé
At some point the URL changed, update it to avoid other
developers to search for it.
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
hw/block/nvme.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 1aee042d4c..6628d0a4ba 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -11,7 +11,7 @@
/**
* Reference Specs: http://www.nvmexpress.org, 1.2, 1.1, 1.0e
*
- * http://www.nvmexpress.org/resources/
+ * https://nvmexpress.org/developers/nvme-specification/
*/
/**
--
2.21.3
^ permalink raw reply related [flat|nested] 14+ messages in thread* Re: [PATCH v3 1/4] hw/block/nvme: Update specification URL
2020-06-30 11:04 ` [PATCH v3 1/4] hw/block/nvme: Update specification URL Philippe Mathieu-Daudé
@ 2020-07-08 22:11 ` Dmitry Fomichev
0 siblings, 0 replies; 14+ messages in thread
From: Dmitry Fomichev @ 2020-07-08 22:11 UTC (permalink / raw)
To: philmd, qemu-devel; +Cc: kwolf, kbusch, k.jensen, qemu-block, mreitz
On Tue, 2020-06-30 at 13:04 +0200, Philippe Mathieu-Daudé wrote:
> At some point the URL changed, update it to avoid other
> developers to search for it.
>
> Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
> hw/block/nvme.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/block/nvme.c b/hw/block/nvme.c
> index 1aee042d4c..6628d0a4ba 100644
> --- a/hw/block/nvme.c
> +++ b/hw/block/nvme.c
> @@ -11,7 +11,7 @@
> /**
> * Reference Specs: http://www.nvmexpress.org, 1.2, 1.1, 1.0e
> *
> - * http://www.nvmexpress.org/resources/
> + * https://nvmexpress.org/developers/nvme-specification/
> */
>
> /**
> --
> 2.21.3
>
>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH v3 2/4] hw/block/nvme: Use QEMU_PACKED on hardware/packet structures
2020-06-30 11:04 [PATCH v3 0/4] hw/block/nvme: Fix I/O BAR structure Philippe Mathieu-Daudé
2020-06-30 11:04 ` [PATCH v3 1/4] hw/block/nvme: Update specification URL Philippe Mathieu-Daudé
@ 2020-06-30 11:04 ` Philippe Mathieu-Daudé
2020-07-13 0:56 ` Dmitry Fomichev
2020-06-30 11:04 ` [PATCH v3 3/4] hw/block/nvme: Fix pmrmsc register size Philippe Mathieu-Daudé
` (2 subsequent siblings)
4 siblings, 1 reply; 14+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-06-30 11:04 UTC (permalink / raw)
To: qemu-devel
Cc: Kevin Wolf, qemu-block, Klaus Jensen, Maxim Levitsky,
Keith Busch, Max Reitz, Philippe Mathieu-Daudé
These structures either describe hardware registers, or
commands ('packets') to send to the hardware. To forbid
the compiler to optimize and change fields alignment,
mark the structures as packed.
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
include/block/nvme.h | 38 +++++++++++++++++++-------------------
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/include/block/nvme.h b/include/block/nvme.h
index 1720ee1d51..71c5681912 100644
--- a/include/block/nvme.h
+++ b/include/block/nvme.h
@@ -1,7 +1,7 @@
#ifndef BLOCK_NVME_H
#define BLOCK_NVME_H
-typedef struct NvmeBar {
+typedef struct QEMU_PACKED NvmeBar {
uint64_t cap;
uint32_t vs;
uint32_t intms;
@@ -377,7 +377,7 @@ enum NvmePmrmscMask {
#define NVME_PMRMSC_SET_CBA(pmrmsc, val) \
(pmrmsc |= (uint64_t)(val & PMRMSC_CBA_MASK) << PMRMSC_CBA_SHIFT)
-typedef struct NvmeCmd {
+typedef struct QEMU_PACKED NvmeCmd {
uint8_t opcode;
uint8_t fuse;
uint16_t cid;
@@ -422,7 +422,7 @@ enum NvmeIoCommands {
NVME_CMD_DSM = 0x09,
};
-typedef struct NvmeDeleteQ {
+typedef struct QEMU_PACKED NvmeDeleteQ {
uint8_t opcode;
uint8_t flags;
uint16_t cid;
@@ -432,7 +432,7 @@ typedef struct NvmeDeleteQ {
uint32_t rsvd11[5];
} NvmeDeleteQ;
-typedef struct NvmeCreateCq {
+typedef struct QEMU_PACKED NvmeCreateCq {
uint8_t opcode;
uint8_t flags;
uint16_t cid;
@@ -449,7 +449,7 @@ typedef struct NvmeCreateCq {
#define NVME_CQ_FLAGS_PC(cq_flags) (cq_flags & 0x1)
#define NVME_CQ_FLAGS_IEN(cq_flags) ((cq_flags >> 1) & 0x1)
-typedef struct NvmeCreateSq {
+typedef struct QEMU_PACKED NvmeCreateSq {
uint8_t opcode;
uint8_t flags;
uint16_t cid;
@@ -474,7 +474,7 @@ enum NvmeQueueFlags {
NVME_Q_PRIO_LOW = 3,
};
-typedef struct NvmeIdentify {
+typedef struct QEMU_PACKED NvmeIdentify {
uint8_t opcode;
uint8_t flags;
uint16_t cid;
@@ -486,7 +486,7 @@ typedef struct NvmeIdentify {
uint32_t rsvd11[5];
} NvmeIdentify;
-typedef struct NvmeRwCmd {
+typedef struct QEMU_PACKED NvmeRwCmd {
uint8_t opcode;
uint8_t flags;
uint16_t cid;
@@ -528,7 +528,7 @@ enum {
NVME_RW_PRINFO_PRCHK_REF = 1 << 10,
};
-typedef struct NvmeDsmCmd {
+typedef struct QEMU_PACKED NvmeDsmCmd {
uint8_t opcode;
uint8_t flags;
uint16_t cid;
@@ -547,7 +547,7 @@ enum {
NVME_DSMGMT_AD = 1 << 2,
};
-typedef struct NvmeDsmRange {
+typedef struct QEMU_PACKED NvmeDsmRange {
uint32_t cattr;
uint32_t nlb;
uint64_t slba;
@@ -569,14 +569,14 @@ enum NvmeAsyncEventRequest {
NVME_AER_INFO_SMART_SPARE_THRESH = 2,
};
-typedef struct NvmeAerResult {
+typedef struct QEMU_PACKED NvmeAerResult {
uint8_t event_type;
uint8_t event_info;
uint8_t log_page;
uint8_t resv;
} NvmeAerResult;
-typedef struct NvmeCqe {
+typedef struct QEMU_PACKED NvmeCqe {
uint32_t result;
uint32_t rsvd;
uint16_t sq_head;
@@ -634,7 +634,7 @@ enum NvmeStatusCodes {
NVME_NO_COMPLETE = 0xffff,
};
-typedef struct NvmeFwSlotInfoLog {
+typedef struct QEMU_PACKED NvmeFwSlotInfoLog {
uint8_t afi;
uint8_t reserved1[7];
uint8_t frs1[8];
@@ -647,7 +647,7 @@ typedef struct NvmeFwSlotInfoLog {
uint8_t reserved2[448];
} NvmeFwSlotInfoLog;
-typedef struct NvmeErrorLog {
+typedef struct QEMU_PACKED NvmeErrorLog {
uint64_t error_count;
uint16_t sqid;
uint16_t cid;
@@ -659,7 +659,7 @@ typedef struct NvmeErrorLog {
uint8_t resv[35];
} NvmeErrorLog;
-typedef struct NvmeSmartLog {
+typedef struct QEMU_PACKED NvmeSmartLog {
uint8_t critical_warning;
uint8_t temperature[2];
uint8_t available_spare;
@@ -693,7 +693,7 @@ enum LogIdentifier {
NVME_LOG_FW_SLOT_INFO = 0x03,
};
-typedef struct NvmePSD {
+typedef struct QEMU_PACKED NvmePSD {
uint16_t mp;
uint16_t reserved;
uint32_t enlat;
@@ -713,7 +713,7 @@ enum {
NVME_ID_CNS_NS_ACTIVE_LIST = 0x2,
};
-typedef struct NvmeIdCtrl {
+typedef struct QEMU_PACKED NvmeIdCtrl {
uint16_t vid;
uint16_t ssvid;
uint8_t sn[20];
@@ -807,7 +807,7 @@ enum NvmeFeatureIds {
NVME_SOFTWARE_PROGRESS_MARKER = 0x80
};
-typedef struct NvmeRangeType {
+typedef struct QEMU_PACKED NvmeRangeType {
uint8_t type;
uint8_t attributes;
uint8_t rsvd2[14];
@@ -817,13 +817,13 @@ typedef struct NvmeRangeType {
uint8_t rsvd48[16];
} NvmeRangeType;
-typedef struct NvmeLBAF {
+typedef struct QEMU_PACKED NvmeLBAF {
uint16_t ms;
uint8_t ds;
uint8_t rp;
} NvmeLBAF;
-typedef struct NvmeIdNs {
+typedef struct QEMU_PACKED NvmeIdNs {
uint64_t nsze;
uint64_t ncap;
uint64_t nuse;
--
2.21.3
^ permalink raw reply related [flat|nested] 14+ messages in thread* Re: [PATCH v3 2/4] hw/block/nvme: Use QEMU_PACKED on hardware/packet structures
2020-06-30 11:04 ` [PATCH v3 2/4] hw/block/nvme: Use QEMU_PACKED on hardware/packet structures Philippe Mathieu-Daudé
@ 2020-07-13 0:56 ` Dmitry Fomichev
0 siblings, 0 replies; 14+ messages in thread
From: Dmitry Fomichev @ 2020-07-13 0:56 UTC (permalink / raw)
To: philmd, qemu-devel; +Cc: kwolf, kbusch, k.jensen, qemu-block, mreitz
On Tue, 2020-06-30 at 13:04 +0200, Philippe Mathieu-Daudé wrote:
> These structures either describe hardware registers, or
> commands ('packets') to send to the hardware. To forbid
> the compiler to optimize and change fields alignment,
> mark the structures as packed.
>
> Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
> include/block/nvme.h | 38 +++++++++++++++++++-------------------
> 1 file changed, 19 insertions(+), 19 deletions(-)
>
> diff --git a/include/block/nvme.h b/include/block/nvme.h
> index 1720ee1d51..71c5681912 100644
> --- a/include/block/nvme.h
> +++ b/include/block/nvme.h
> @@ -1,7 +1,7 @@
> #ifndef BLOCK_NVME_H
> #define BLOCK_NVME_H
>
> -typedef struct NvmeBar {
> +typedef struct QEMU_PACKED NvmeBar {
> uint64_t cap;
> uint32_t vs;
> uint32_t intms;
> @@ -377,7 +377,7 @@ enum NvmePmrmscMask {
> #define NVME_PMRMSC_SET_CBA(pmrmsc, val) \
> (pmrmsc |= (uint64_t)(val & PMRMSC_CBA_MASK) << PMRMSC_CBA_SHIFT)
>
> -typedef struct NvmeCmd {
> +typedef struct QEMU_PACKED NvmeCmd {
> uint8_t opcode;
> uint8_t fuse;
> uint16_t cid;
> @@ -422,7 +422,7 @@ enum NvmeIoCommands {
> NVME_CMD_DSM = 0x09,
> };
>
> -typedef struct NvmeDeleteQ {
> +typedef struct QEMU_PACKED NvmeDeleteQ {
> uint8_t opcode;
> uint8_t flags;
> uint16_t cid;
> @@ -432,7 +432,7 @@ typedef struct NvmeDeleteQ {
> uint32_t rsvd11[5];
> } NvmeDeleteQ;
>
> -typedef struct NvmeCreateCq {
> +typedef struct QEMU_PACKED NvmeCreateCq {
> uint8_t opcode;
> uint8_t flags;
> uint16_t cid;
> @@ -449,7 +449,7 @@ typedef struct NvmeCreateCq {
> #define NVME_CQ_FLAGS_PC(cq_flags) (cq_flags & 0x1)
> #define NVME_CQ_FLAGS_IEN(cq_flags) ((cq_flags >> 1) & 0x1)
>
> -typedef struct NvmeCreateSq {
> +typedef struct QEMU_PACKED NvmeCreateSq {
> uint8_t opcode;
> uint8_t flags;
> uint16_t cid;
> @@ -474,7 +474,7 @@ enum NvmeQueueFlags {
> NVME_Q_PRIO_LOW = 3,
> };
>
> -typedef struct NvmeIdentify {
> +typedef struct QEMU_PACKED NvmeIdentify {
> uint8_t opcode;
> uint8_t flags;
> uint16_t cid;
> @@ -486,7 +486,7 @@ typedef struct NvmeIdentify {
> uint32_t rsvd11[5];
> } NvmeIdentify;
>
> -typedef struct NvmeRwCmd {
> +typedef struct QEMU_PACKED NvmeRwCmd {
> uint8_t opcode;
> uint8_t flags;
> uint16_t cid;
> @@ -528,7 +528,7 @@ enum {
> NVME_RW_PRINFO_PRCHK_REF = 1 << 10,
> };
>
> -typedef struct NvmeDsmCmd {
> +typedef struct QEMU_PACKED NvmeDsmCmd {
> uint8_t opcode;
> uint8_t flags;
> uint16_t cid;
> @@ -547,7 +547,7 @@ enum {
> NVME_DSMGMT_AD = 1 << 2,
> };
>
> -typedef struct NvmeDsmRange {
> +typedef struct QEMU_PACKED NvmeDsmRange {
> uint32_t cattr;
> uint32_t nlb;
> uint64_t slba;
> @@ -569,14 +569,14 @@ enum NvmeAsyncEventRequest {
> NVME_AER_INFO_SMART_SPARE_THRESH = 2,
> };
>
> -typedef struct NvmeAerResult {
> +typedef struct QEMU_PACKED NvmeAerResult {
> uint8_t event_type;
> uint8_t event_info;
> uint8_t log_page;
> uint8_t resv;
> } NvmeAerResult;
>
> -typedef struct NvmeCqe {
> +typedef struct QEMU_PACKED NvmeCqe {
> uint32_t result;
> uint32_t rsvd;
> uint16_t sq_head;
> @@ -634,7 +634,7 @@ enum NvmeStatusCodes {
> NVME_NO_COMPLETE = 0xffff,
> };
>
> -typedef struct NvmeFwSlotInfoLog {
> +typedef struct QEMU_PACKED NvmeFwSlotInfoLog {
> uint8_t afi;
> uint8_t reserved1[7];
> uint8_t frs1[8];
> @@ -647,7 +647,7 @@ typedef struct NvmeFwSlotInfoLog {
> uint8_t reserved2[448];
> } NvmeFwSlotInfoLog;
>
> -typedef struct NvmeErrorLog {
> +typedef struct QEMU_PACKED NvmeErrorLog {
> uint64_t error_count;
> uint16_t sqid;
> uint16_t cid;
> @@ -659,7 +659,7 @@ typedef struct NvmeErrorLog {
> uint8_t resv[35];
> } NvmeErrorLog;
>
> -typedef struct NvmeSmartLog {
> +typedef struct QEMU_PACKED NvmeSmartLog {
> uint8_t critical_warning;
> uint8_t temperature[2];
> uint8_t available_spare;
> @@ -693,7 +693,7 @@ enum LogIdentifier {
> NVME_LOG_FW_SLOT_INFO = 0x03,
> };
>
> -typedef struct NvmePSD {
> +typedef struct QEMU_PACKED NvmePSD {
> uint16_t mp;
> uint16_t reserved;
> uint32_t enlat;
> @@ -713,7 +713,7 @@ enum {
> NVME_ID_CNS_NS_ACTIVE_LIST = 0x2,
> };
>
> -typedef struct NvmeIdCtrl {
> +typedef struct QEMU_PACKED NvmeIdCtrl {
> uint16_t vid;
> uint16_t ssvid;
> uint8_t sn[20];
> @@ -807,7 +807,7 @@ enum NvmeFeatureIds {
> NVME_SOFTWARE_PROGRESS_MARKER = 0x80
> };
>
> -typedef struct NvmeRangeType {
> +typedef struct QEMU_PACKED NvmeRangeType {
> uint8_t type;
> uint8_t attributes;
> uint8_t rsvd2[14];
> @@ -817,13 +817,13 @@ typedef struct NvmeRangeType {
> uint8_t rsvd48[16];
> } NvmeRangeType;
>
> -typedef struct NvmeLBAF {
> +typedef struct QEMU_PACKED NvmeLBAF {
> uint16_t ms;
> uint8_t ds;
> uint8_t rp;
> } NvmeLBAF;
>
> -typedef struct NvmeIdNs {
> +typedef struct QEMU_PACKED NvmeIdNs {
> uint64_t nsze;
> uint64_t ncap;
> uint64_t nuse;
> --
> 2.21.3
>
>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH v3 3/4] hw/block/nvme: Fix pmrmsc register size
2020-06-30 11:04 [PATCH v3 0/4] hw/block/nvme: Fix I/O BAR structure Philippe Mathieu-Daudé
2020-06-30 11:04 ` [PATCH v3 1/4] hw/block/nvme: Update specification URL Philippe Mathieu-Daudé
2020-06-30 11:04 ` [PATCH v3 2/4] hw/block/nvme: Use QEMU_PACKED on hardware/packet structures Philippe Mathieu-Daudé
@ 2020-06-30 11:04 ` Philippe Mathieu-Daudé
2020-06-30 15:10 ` Andrzej Jakowski
2020-07-13 1:07 ` Dmitry Fomichev
2020-06-30 11:04 ` [PATCH v3 4/4] hw/block/nvme: Align I/O BAR to 4 KiB Philippe Mathieu-Daudé
2020-07-13 7:51 ` [PATCH v3 0/4] hw/block/nvme: Fix I/O BAR structure Klaus Jensen
4 siblings, 2 replies; 14+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-06-30 11:04 UTC (permalink / raw)
To: qemu-devel
Cc: Kevin Wolf, qemu-block, Klaus Jensen, Maxim Levitsky,
Andrzej Jakowski, Keith Busch, Max Reitz,
Philippe Mathieu-Daudé
The Persistent Memory Region Controller Memory Space Control
register is 64-bit wide. See 'Figure 68: Register Definition'
of the 'NVM Express Base Specification Revision 1.4'.
Fixes: 6cf9413229 ("introduce PMR support from NVMe 1.4 spec")
Reported-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
Cc: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
---
include/block/nvme.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/block/nvme.h b/include/block/nvme.h
index 71c5681912..82c384614a 100644
--- a/include/block/nvme.h
+++ b/include/block/nvme.h
@@ -21,7 +21,7 @@ typedef struct QEMU_PACKED NvmeBar {
uint32_t pmrsts;
uint32_t pmrebs;
uint32_t pmrswtp;
- uint32_t pmrmsc;
+ uint64_t pmrmsc;
} NvmeBar;
enum NvmeCapShift {
--
2.21.3
^ permalink raw reply related [flat|nested] 14+ messages in thread* Re: [PATCH v3 3/4] hw/block/nvme: Fix pmrmsc register size
2020-06-30 11:04 ` [PATCH v3 3/4] hw/block/nvme: Fix pmrmsc register size Philippe Mathieu-Daudé
@ 2020-06-30 15:10 ` Andrzej Jakowski
2020-06-30 15:16 ` Philippe Mathieu-Daudé
2020-07-13 1:07 ` Dmitry Fomichev
1 sibling, 1 reply; 14+ messages in thread
From: Andrzej Jakowski @ 2020-06-30 15:10 UTC (permalink / raw)
To: Philippe Mathieu-Daudé, qemu-devel
Cc: Kevin Wolf, qemu-block, Klaus Jensen, Maxim Levitsky,
Keith Busch, Max Reitz
On 6/30/20 4:04 AM, Philippe Mathieu-Daudé wrote:
> The Persistent Memory Region Controller Memory Space Control
> register is 64-bit wide. See 'Figure 68: Register Definition'
> of the 'NVM Express Base Specification Revision 1.4'.
>
> Fixes: 6cf9413229 ("introduce PMR support from NVMe 1.4 spec")
> Reported-by: Klaus Jensen <k.jensen@samsung.com>
> Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
> Cc: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
> ---
> include/block/nvme.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/block/nvme.h b/include/block/nvme.h
> index 71c5681912..82c384614a 100644
> --- a/include/block/nvme.h
> +++ b/include/block/nvme.h
> @@ -21,7 +21,7 @@ typedef struct QEMU_PACKED NvmeBar {
> uint32_t pmrsts;
> uint32_t pmrebs;
> uint32_t pmrswtp;
> - uint32_t pmrmsc;
> + uint64_t pmrmsc;
> } NvmeBar;
>
> enum NvmeCapShift {
> -- 2.21.3
This is good catch, though I wanted to highlight that this will still
need to change as this register is not aligned properly and thus not in
compliance with spec.
Reviewed-by Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
^ permalink raw reply [flat|nested] 14+ messages in thread* Re: [PATCH v3 3/4] hw/block/nvme: Fix pmrmsc register size
2020-06-30 15:10 ` Andrzej Jakowski
@ 2020-06-30 15:16 ` Philippe Mathieu-Daudé
2020-06-30 16:45 ` Klaus Jensen
0 siblings, 1 reply; 14+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-06-30 15:16 UTC (permalink / raw)
To: Andrzej Jakowski, qemu-devel
Cc: Kevin Wolf, qemu-block, Klaus Jensen, Maxim Levitsky,
Keith Busch, Max Reitz
On 6/30/20 5:10 PM, Andrzej Jakowski wrote:
> On 6/30/20 4:04 AM, Philippe Mathieu-Daudé wrote:
>> The Persistent Memory Region Controller Memory Space Control
>> register is 64-bit wide. See 'Figure 68: Register Definition'
>> of the 'NVM Express Base Specification Revision 1.4'.
>>
>> Fixes: 6cf9413229 ("introduce PMR support from NVMe 1.4 spec")
>> Reported-by: Klaus Jensen <k.jensen@samsung.com>
>> Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
>> ---
>> Cc: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
>> ---
>> include/block/nvme.h | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/include/block/nvme.h b/include/block/nvme.h
>> index 71c5681912..82c384614a 100644
>> --- a/include/block/nvme.h
>> +++ b/include/block/nvme.h
>> @@ -21,7 +21,7 @@ typedef struct QEMU_PACKED NvmeBar {
>> uint32_t pmrsts;
>> uint32_t pmrebs;
>> uint32_t pmrswtp;
>> - uint32_t pmrmsc;
>> + uint64_t pmrmsc;
>> } NvmeBar;
>>
>> enum NvmeCapShift {
>> -- 2.21.3
>
> This is good catch, though I wanted to highlight that this will still
> need to change as this register is not aligned properly and thus not in
> compliance with spec.
I was wondering the odd alignment too. So you are saying at some time
in the future the spec will be updated to correct the alignment?
Should we use this instead?
uint32_t pmrmsc;
+ uint32_t pmrmsc_upper32; /* the spec define this, but *
+ * only low 32-bit are used */
Or eventually an unnamed struct:
- uint32_t pmrmsc;
+ struct {
+ uint32_t pmrmsc;
+ uint32_t pmrmsc_upper32; /* the spec define this, but *
+ * only low 32-bit are used */
+ };
>
> Reviewed-by Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
>
^ permalink raw reply [flat|nested] 14+ messages in thread* Re: [PATCH v3 3/4] hw/block/nvme: Fix pmrmsc register size
2020-06-30 15:16 ` Philippe Mathieu-Daudé
@ 2020-06-30 16:45 ` Klaus Jensen
2020-07-01 23:08 ` Andrzej Jakowski
0 siblings, 1 reply; 14+ messages in thread
From: Klaus Jensen @ 2020-06-30 16:45 UTC (permalink / raw)
To: Philippe Mathieu-Daudé
Cc: Kevin Wolf, qemu-block, Klaus Jensen, qemu-devel, Max Reitz,
Andrzej Jakowski, Keith Busch
On Jun 30 17:16, Philippe Mathieu-Daudé wrote:
> On 6/30/20 5:10 PM, Andrzej Jakowski wrote:
> > On 6/30/20 4:04 AM, Philippe Mathieu-Daudé wrote:
> >> The Persistent Memory Region Controller Memory Space Control
> >> register is 64-bit wide. See 'Figure 68: Register Definition'
> >> of the 'NVM Express Base Specification Revision 1.4'.
> >>
> >> Fixes: 6cf9413229 ("introduce PMR support from NVMe 1.4 spec")
> >> Reported-by: Klaus Jensen <k.jensen@samsung.com>
> >> Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
> >> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> >> ---
> >> Cc: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
> >> ---
> >> include/block/nvme.h | 2 +-
> >> 1 file changed, 1 insertion(+), 1 deletion(-)
> >>
> >> diff --git a/include/block/nvme.h b/include/block/nvme.h
> >> index 71c5681912..82c384614a 100644
> >> --- a/include/block/nvme.h
> >> +++ b/include/block/nvme.h
> >> @@ -21,7 +21,7 @@ typedef struct QEMU_PACKED NvmeBar {
> >> uint32_t pmrsts;
> >> uint32_t pmrebs;
> >> uint32_t pmrswtp;
> >> - uint32_t pmrmsc;
> >> + uint64_t pmrmsc;
> >> } NvmeBar;
> >>
> >> enum NvmeCapShift {
> >> -- 2.21.3
> >
> > This is good catch, though I wanted to highlight that this will still
> > need to change as this register is not aligned properly and thus not in
> > compliance with spec.
>
> I was wondering the odd alignment too. So you are saying at some time
> in the future the spec will be updated to correct the alignment?
>
> Should we use this instead?
>
> uint32_t pmrmsc;
> + uint32_t pmrmsc_upper32; /* the spec define this, but *
> + * only low 32-bit are used */
>
> Or eventually an unnamed struct:
>
> - uint32_t pmrmsc;
> + struct {
> + uint32_t pmrmsc;
> + uint32_t pmrmsc_upper32; /* the spec define this, but *
> + * only low 32-bit are used */
> + };
>
> >
> > Reviewed-by Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
> >
>
I'm also not sure what you mean Andrzej. The odd alignment is exactly
what the spec (v1.4) says?
^ permalink raw reply [flat|nested] 14+ messages in thread* Re: [PATCH v3 3/4] hw/block/nvme: Fix pmrmsc register size
2020-06-30 16:45 ` Klaus Jensen
@ 2020-07-01 23:08 ` Andrzej Jakowski
0 siblings, 0 replies; 14+ messages in thread
From: Andrzej Jakowski @ 2020-07-01 23:08 UTC (permalink / raw)
To: Klaus Jensen, Philippe Mathieu-Daudé
Cc: Kevin Wolf, qemu-block, Klaus Jensen, qemu-devel, Max Reitz, Keith Busch
On 6/30/20 9:45 AM, Klaus Jensen wrote:
> On Jun 30 17:16, Philippe Mathieu-Daudé wrote:
>> On 6/30/20 5:10 PM, Andrzej Jakowski wrote:
>>> On 6/30/20 4:04 AM, Philippe Mathieu-Daudé wrote:
>>>> The Persistent Memory Region Controller Memory Space Control
>>>> register is 64-bit wide. See 'Figure 68: Register Definition'
>>>> of the 'NVM Express Base Specification Revision 1.4'.
>>>>
>>>> Fixes: 6cf9413229 ("introduce PMR support from NVMe 1.4 spec")
>>>> Reported-by: Klaus Jensen <k.jensen@samsung.com>
>>>> Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
>>>> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
>>>> ---
>>>> Cc: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
>>>> ---
>>>> include/block/nvme.h | 2 +-
>>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/include/block/nvme.h b/include/block/nvme.h
>>>> index 71c5681912..82c384614a 100644
>>>> --- a/include/block/nvme.h
>>>> +++ b/include/block/nvme.h
>>>> @@ -21,7 +21,7 @@ typedef struct QEMU_PACKED NvmeBar {
>>>> uint32_t pmrsts;
>>>> uint32_t pmrebs;
>>>> uint32_t pmrswtp;
>>>> - uint32_t pmrmsc;
>>>> + uint64_t pmrmsc;
>>>> } NvmeBar;
>>>>
>>>> enum NvmeCapShift {
>>>> -- 2.21.3
>>>
>>> This is good catch, though I wanted to highlight that this will still
>>> need to change as this register is not aligned properly and thus not in
>>> compliance with spec.
>>
>> I was wondering the odd alignment too. So you are saying at some time
>> in the future the spec will be updated to correct the alignment?
Yep I think so.
So PMRMSC currently is 64-bit register that is defined at E14h offset.
It is in conflict with spec because spec requires 64-bit registers to
be 64-bit aligned.
I anticipate that changes will be needed.
>>
>> Should we use this instead?
>>
>> uint32_t pmrmsc;
>> + uint32_t pmrmsc_upper32; /* the spec define this, but *
>> + * only low 32-bit are used */
>>
>> Or eventually an unnamed struct:
>>
>> - uint32_t pmrmsc;
>> + struct {
>> + uint32_t pmrmsc;
>> + uint32_t pmrmsc_upper32; /* the spec define this, but *
>> + * only low 32-bit are used */
>> + };
>>
>>>
>>> Reviewed-by Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
>>>
>>
>
> I'm also not sure what you mean Andrzej. The odd alignment is exactly
> what the spec (v1.4) says?
>
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH v3 3/4] hw/block/nvme: Fix pmrmsc register size
2020-06-30 11:04 ` [PATCH v3 3/4] hw/block/nvme: Fix pmrmsc register size Philippe Mathieu-Daudé
2020-06-30 15:10 ` Andrzej Jakowski
@ 2020-07-13 1:07 ` Dmitry Fomichev
1 sibling, 0 replies; 14+ messages in thread
From: Dmitry Fomichev @ 2020-07-13 1:07 UTC (permalink / raw)
To: philmd, qemu-devel
Cc: kwolf, qemu-block, k.jensen, mreitz, andrzej.jakowski, kbusch, mlevitsk
On Tue, 2020-06-30 at 13:04 +0200, Philippe Mathieu-Daudé wrote:
> The Persistent Memory Region Controller Memory Space Control
> register is 64-bit wide. See 'Figure 68: Register Definition'
> of the 'NVM Express Base Specification Revision 1.4'.
>
> Fixes: 6cf9413229 ("introduce PMR support from NVMe 1.4 spec")
> Reported-by: Klaus Jensen <k.jensen@samsung.com>
> Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
> Cc: Andrzej Jakowski <andrzej.jakowski@linux.intel.com>
> ---
> include/block/nvme.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/block/nvme.h b/include/block/nvme.h
> index 71c5681912..82c384614a 100644
> --- a/include/block/nvme.h
> +++ b/include/block/nvme.h
> @@ -21,7 +21,7 @@ typedef struct QEMU_PACKED NvmeBar {
> uint32_t pmrsts;
> uint32_t pmrebs;
> uint32_t pmrswtp;
> - uint32_t pmrmsc;
> + uint64_t pmrmsc;
> } NvmeBar;
>
> enum NvmeCapShift {
> --
> 2.21.3
>
>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH v3 4/4] hw/block/nvme: Align I/O BAR to 4 KiB
2020-06-30 11:04 [PATCH v3 0/4] hw/block/nvme: Fix I/O BAR structure Philippe Mathieu-Daudé
` (2 preceding siblings ...)
2020-06-30 11:04 ` [PATCH v3 3/4] hw/block/nvme: Fix pmrmsc register size Philippe Mathieu-Daudé
@ 2020-06-30 11:04 ` Philippe Mathieu-Daudé
2020-07-13 1:07 ` Dmitry Fomichev
2020-07-13 7:51 ` [PATCH v3 0/4] hw/block/nvme: Fix I/O BAR structure Klaus Jensen
4 siblings, 1 reply; 14+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-06-30 11:04 UTC (permalink / raw)
To: qemu-devel
Cc: Kevin Wolf, qemu-block, Klaus Jensen, Maxim Levitsky,
Keith Busch, Max Reitz, Philippe Mathieu-Daudé
Simplify the NVMe emulated device by aligning the I/O BAR to 4 KiB.
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
include/block/nvme.h | 2 ++
hw/block/nvme.c | 5 ++---
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/include/block/nvme.h b/include/block/nvme.h
index 82c384614a..4e1cea576a 100644
--- a/include/block/nvme.h
+++ b/include/block/nvme.h
@@ -22,6 +22,7 @@ typedef struct QEMU_PACKED NvmeBar {
uint32_t pmrebs;
uint32_t pmrswtp;
uint64_t pmrmsc;
+ uint8_t reserved[484];
} NvmeBar;
enum NvmeCapShift {
@@ -879,6 +880,7 @@ enum NvmeIdNsDps {
static inline void _nvme_check_size(void)
{
+ QEMU_BUILD_BUG_ON(sizeof(NvmeBar) != 4096);
QEMU_BUILD_BUG_ON(sizeof(NvmeAerResult) != 4);
QEMU_BUILD_BUG_ON(sizeof(NvmeCqe) != 16);
QEMU_BUILD_BUG_ON(sizeof(NvmeDsmRange) != 16);
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 6628d0a4ba..2aa54bc20e 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -55,7 +55,6 @@
#include "nvme.h"
#define NVME_MAX_IOQPAIRS 0xffff
-#define NVME_REG_SIZE 0x1000
#define NVME_DB_SIZE 4
#define NVME_CMB_BIR 2
#define NVME_PMR_BIR 2
@@ -1322,7 +1321,7 @@ static void nvme_mmio_write(void *opaque, hwaddr addr, uint64_t data,
NvmeCtrl *n = (NvmeCtrl *)opaque;
if (addr < sizeof(n->bar)) {
nvme_write_bar(n, addr, data, size);
- } else if (addr >= 0x1000) {
+ } else {
nvme_process_db(n, addr, data);
}
}
@@ -1416,7 +1415,7 @@ static void nvme_init_state(NvmeCtrl *n)
{
n->num_namespaces = 1;
/* add one to max_ioqpairs to account for the admin queue pair */
- n->reg_size = pow2ceil(NVME_REG_SIZE +
+ n->reg_size = pow2ceil(sizeof(NvmeBar) +
2 * (n->params.max_ioqpairs + 1) * NVME_DB_SIZE);
n->namespaces = g_new0(NvmeNamespace, n->num_namespaces);
n->sq = g_new0(NvmeSQueue *, n->params.max_ioqpairs + 1);
--
2.21.3
^ permalink raw reply related [flat|nested] 14+ messages in thread* Re: [PATCH v3 4/4] hw/block/nvme: Align I/O BAR to 4 KiB
2020-06-30 11:04 ` [PATCH v3 4/4] hw/block/nvme: Align I/O BAR to 4 KiB Philippe Mathieu-Daudé
@ 2020-07-13 1:07 ` Dmitry Fomichev
0 siblings, 0 replies; 14+ messages in thread
From: Dmitry Fomichev @ 2020-07-13 1:07 UTC (permalink / raw)
To: philmd, qemu-devel; +Cc: kwolf, kbusch, k.jensen, qemu-block, mreitz
On Tue, 2020-06-30 at 13:04 +0200, Philippe Mathieu-Daudé wrote:
> Simplify the NVMe emulated device by aligning the I/O BAR to 4 KiB.
>
> Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
> include/block/nvme.h | 2 ++
> hw/block/nvme.c | 5 ++---
> 2 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/include/block/nvme.h b/include/block/nvme.h
> index 82c384614a..4e1cea576a 100644
> --- a/include/block/nvme.h
> +++ b/include/block/nvme.h
> @@ -22,6 +22,7 @@ typedef struct QEMU_PACKED NvmeBar {
> uint32_t pmrebs;
> uint32_t pmrswtp;
> uint64_t pmrmsc;
> + uint8_t reserved[484];
> } NvmeBar;
>
> enum NvmeCapShift {
> @@ -879,6 +880,7 @@ enum NvmeIdNsDps {
>
> static inline void _nvme_check_size(void)
> {
> + QEMU_BUILD_BUG_ON(sizeof(NvmeBar) != 4096);
> QEMU_BUILD_BUG_ON(sizeof(NvmeAerResult) != 4);
> QEMU_BUILD_BUG_ON(sizeof(NvmeCqe) != 16);
> QEMU_BUILD_BUG_ON(sizeof(NvmeDsmRange) != 16);
> diff --git a/hw/block/nvme.c b/hw/block/nvme.c
> index 6628d0a4ba..2aa54bc20e 100644
> --- a/hw/block/nvme.c
> +++ b/hw/block/nvme.c
> @@ -55,7 +55,6 @@
> #include "nvme.h"
>
> #define NVME_MAX_IOQPAIRS 0xffff
> -#define NVME_REG_SIZE 0x1000
> #define NVME_DB_SIZE 4
> #define NVME_CMB_BIR 2
> #define NVME_PMR_BIR 2
> @@ -1322,7 +1321,7 @@ static void nvme_mmio_write(void *opaque, hwaddr addr, uint64_t data,
> NvmeCtrl *n = (NvmeCtrl *)opaque;
> if (addr < sizeof(n->bar)) {
> nvme_write_bar(n, addr, data, size);
> - } else if (addr >= 0x1000) {
> + } else {
> nvme_process_db(n, addr, data);
> }
> }
> @@ -1416,7 +1415,7 @@ static void nvme_init_state(NvmeCtrl *n)
> {
> n->num_namespaces = 1;
> /* add one to max_ioqpairs to account for the admin queue pair */
> - n->reg_size = pow2ceil(NVME_REG_SIZE +
> + n->reg_size = pow2ceil(sizeof(NvmeBar) +
> 2 * (n->params.max_ioqpairs + 1) * NVME_DB_SIZE);
> n->namespaces = g_new0(NvmeNamespace, n->num_namespaces);
> n->sq = g_new0(NvmeSQueue *, n->params.max_ioqpairs + 1);
> --
> 2.21.3
>
>
Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH v3 0/4] hw/block/nvme: Fix I/O BAR structure
2020-06-30 11:04 [PATCH v3 0/4] hw/block/nvme: Fix I/O BAR structure Philippe Mathieu-Daudé
` (3 preceding siblings ...)
2020-06-30 11:04 ` [PATCH v3 4/4] hw/block/nvme: Align I/O BAR to 4 KiB Philippe Mathieu-Daudé
@ 2020-07-13 7:51 ` Klaus Jensen
4 siblings, 0 replies; 14+ messages in thread
From: Klaus Jensen @ 2020-07-13 7:51 UTC (permalink / raw)
To: Philippe Mathieu-Daudé
Cc: Kevin Wolf, qemu-block, Klaus Jensen, qemu-devel, Max Reitz, Keith Busch
On Jun 30 13:04, Philippe Mathieu-Daudé wrote:
> Improvements for the I/O BAR structure:
> - correct pmrmsc register size (Klaus)
> - pack structures
> - align to 4KB
>
> Since v2:
> - Added Klaus' tags with correct address
>
> $ git backport-diff -u v2
> Key:
> [----] : patches are identical
> [####] : number of functional differences between upstream/downstream patch
> [down] : patch is downstream-only
> The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively
>
> 001/4:[----] [--] 'hw/block/nvme: Update specification URL'
> 002/4:[----] [--] 'hw/block/nvme: Use QEMU_PACKED on hardware/packet structures'
> 003/4:[----] [--] 'hw/block/nvme: Fix pmrmsc register size'
> 004/4:[----] [--] 'hw/block/nvme: Align I/O BAR to 4 KiB'
>
> Philippe Mathieu-Daudé (4):
> hw/block/nvme: Update specification URL
> hw/block/nvme: Use QEMU_PACKED on hardware/packet structures
> hw/block/nvme: Fix pmrmsc register size
> hw/block/nvme: Align I/O BAR to 4 KiB
>
> include/block/nvme.h | 42 ++++++++++++++++++++++--------------------
> hw/block/nvme.c | 7 +++----
> 2 files changed, 25 insertions(+), 24 deletions(-)
>
> --
> 2.21.3
>
>
Thanks Philippe! Applied to nvme-next.
^ permalink raw reply [flat|nested] 14+ messages in thread