From: ira.weiny@intel.com
To: Dave Jiang <dave.jiang@intel.com>, Fan Ni <fan.ni@samsung.com>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Navneet Singh <navneet.singh@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
Davidlohr Bueso <dave@stgolabs.net>,
Alison Schofield <alison.schofield@intel.com>,
Vishal Verma <vishal.l.verma@intel.com>,
Ira Weiny <ira.weiny@intel.com>,
linux-btrfs@vger.kernel.org, linux-cxl@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 01/26] cxl/mbox: Flag support for Dynamic Capacity Devices (DCD)
Date: Sun, 24 Mar 2024 16:18:04 -0700 [thread overview]
Message-ID: <20240324-dcd-type2-upstream-v1-1-b7b00d623625@intel.com> (raw)
In-Reply-To: <20240324-dcd-type2-upstream-v1-0-b7b00d623625@intel.com>
From: Navneet Singh <navneet.singh@intel.com>
Per the CXL 3.1 specification software must check the Command Effects
Log (CEL) to know if a device supports dynamic capacity (DC). If the
device does support DC the specifics of the DC Regions (0-7) are read
through the mailbox.
Flag DC Device (DCD) commands in a device if they are supported.
Subsequent patches will key off these bits to configure DCD.
Signed-off-by: Navneet Singh <navneet.singh@intel.com>
Co-developed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
Changes for v1
[iweiny: update to latest master]
[iweiny: update commit message]
[iweiny: Based on the fix:
https://lore.kernel.org/all/20230903-cxl-cel-fix-v1-1-e260c9467be3@intel.com/
[jonathan: remove unneeded format change]
[jonathan: don't split security code in mbox.c]
---
drivers/cxl/core/mbox.c | 33 +++++++++++++++++++++++++++++++++
drivers/cxl/cxlmem.h | 15 +++++++++++++++
2 files changed, 48 insertions(+)
diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
index 9adda4795eb7..ed4131c6f50b 100644
--- a/drivers/cxl/core/mbox.c
+++ b/drivers/cxl/core/mbox.c
@@ -161,6 +161,34 @@ static void cxl_set_security_cmd_enabled(struct cxl_security_state *security,
}
}
+static bool cxl_is_dcd_command(u16 opcode)
+{
+#define CXL_MBOX_OP_DCD_CMDS 0x48
+
+ return (opcode >> 8) == CXL_MBOX_OP_DCD_CMDS;
+}
+
+static void cxl_set_dcd_cmd_enabled(struct cxl_memdev_state *mds,
+ u16 opcode)
+{
+ switch (opcode) {
+ case CXL_MBOX_OP_GET_DC_CONFIG:
+ set_bit(CXL_DCD_ENABLED_GET_CONFIG, mds->dcd_cmds);
+ break;
+ case CXL_MBOX_OP_GET_DC_EXTENT_LIST:
+ set_bit(CXL_DCD_ENABLED_GET_EXTENT_LIST, mds->dcd_cmds);
+ break;
+ case CXL_MBOX_OP_ADD_DC_RESPONSE:
+ set_bit(CXL_DCD_ENABLED_ADD_RESPONSE, mds->dcd_cmds);
+ break;
+ case CXL_MBOX_OP_RELEASE_DC:
+ set_bit(CXL_DCD_ENABLED_RELEASE, mds->dcd_cmds);
+ break;
+ default:
+ break;
+ }
+}
+
static bool cxl_is_poison_command(u16 opcode)
{
#define CXL_MBOX_OP_POISON_CMDS 0x43
@@ -733,6 +761,11 @@ static void cxl_walk_cel(struct cxl_memdev_state *mds, size_t size, u8 *cel)
enabled++;
}
+ if (cxl_is_dcd_command(opcode)) {
+ cxl_set_dcd_cmd_enabled(mds, opcode);
+ enabled++;
+ }
+
dev_dbg(dev, "Opcode 0x%04x %s\n", opcode,
enabled ? "enabled" : "unsupported by driver");
}
diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h
index 20fb3b35e89e..79a67cff9143 100644
--- a/drivers/cxl/cxlmem.h
+++ b/drivers/cxl/cxlmem.h
@@ -238,6 +238,15 @@ struct cxl_event_state {
struct mutex log_lock;
};
+/* Device enabled DCD commands */
+enum dcd_cmd_enabled_bits {
+ CXL_DCD_ENABLED_GET_CONFIG,
+ CXL_DCD_ENABLED_GET_EXTENT_LIST,
+ CXL_DCD_ENABLED_ADD_RESPONSE,
+ CXL_DCD_ENABLED_RELEASE,
+ CXL_DCD_ENABLED_MAX
+};
+
/* Device enabled poison commands */
enum poison_cmd_enabled_bits {
CXL_POISON_ENABLED_LIST,
@@ -454,6 +463,7 @@ struct cxl_dev_state {
* (CXL 2.0 8.2.9.5.1.1 Identify Memory Device)
* @mbox_mutex: Mutex to synchronize mailbox access.
* @firmware_version: Firmware version for the memory device.
+ * @dcd_cmds: List of DCD commands implemented by memory device
* @enabled_cmds: Hardware commands found enabled in CEL.
* @exclusive_cmds: Commands that are kernel-internal only
* @total_bytes: sum of all possible capacities
@@ -481,6 +491,7 @@ struct cxl_memdev_state {
size_t lsa_size;
struct mutex mbox_mutex; /* Protects device mailbox and firmware */
char firmware_version[0x10];
+ DECLARE_BITMAP(dcd_cmds, CXL_DCD_ENABLED_MAX);
DECLARE_BITMAP(enabled_cmds, CXL_MEM_COMMAND_ID_MAX);
DECLARE_BITMAP(exclusive_cmds, CXL_MEM_COMMAND_ID_MAX);
u64 total_bytes;
@@ -551,6 +562,10 @@ enum cxl_opcode {
CXL_MBOX_OP_UNLOCK = 0x4503,
CXL_MBOX_OP_FREEZE_SECURITY = 0x4504,
CXL_MBOX_OP_PASSPHRASE_SECURE_ERASE = 0x4505,
+ CXL_MBOX_OP_GET_DC_CONFIG = 0x4800,
+ CXL_MBOX_OP_GET_DC_EXTENT_LIST = 0x4801,
+ CXL_MBOX_OP_ADD_DC_RESPONSE = 0x4802,
+ CXL_MBOX_OP_RELEASE_DC = 0x4803,
CXL_MBOX_OP_MAX = 0x10000
};
--
2.44.0
next prev parent reply other threads:[~2024-03-24 23:18 UTC|newest]
Thread overview: 160+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-24 23:18 [PATCH 00/26] DCD: Add support for Dynamic Capacity Devices (DCD) ira.weiny
2024-03-24 23:18 ` ira.weiny [this message]
2024-03-25 16:11 ` [PATCH 01/26] cxl/mbox: Flag " Jonathan Cameron
2024-03-25 22:16 ` fan
2024-03-25 22:56 ` Davidlohr Bueso
2024-04-02 22:26 ` Ira Weiny
2024-03-26 16:34 ` Dave Jiang
2024-04-02 22:30 ` Ira Weiny
2024-04-10 18:15 ` Alison Schofield
2024-03-24 23:18 ` [PATCH 02/26] cxl/core: Separate region mode from decoder mode ira.weiny
2024-03-25 16:20 ` Jonathan Cameron
2024-04-02 23:24 ` Ira Weiny
2024-03-25 23:18 ` Davidlohr Bueso
2024-03-28 5:22 ` Ira Weiny
2024-03-28 20:09 ` Dave Jiang
2024-04-02 23:27 ` Ira Weiny
2024-04-24 17:58 ` Ira Weiny
2024-04-02 23:25 ` Ira Weiny
2024-04-10 18:49 ` Alison Schofield
2024-03-24 23:18 ` [PATCH 03/26] cxl/mem: Read dynamic capacity configuration from the device ira.weiny
2024-03-25 17:40 ` Jonathan Cameron
2024-04-03 22:22 ` Ira Weiny
2024-03-25 23:36 ` fan
2024-04-03 22:41 ` Ira Weiny
2024-04-02 11:41 ` Jørgen Hansen
2024-04-05 18:09 ` Ira Weiny
2024-04-09 8:42 ` Jørgen Hansen
2024-04-09 2:00 ` Alison Schofield
2024-03-24 23:18 ` [PATCH 04/26] cxl/region: Add dynamic capacity decoder and region modes ira.weiny
2024-03-25 17:42 ` Jonathan Cameron
2024-03-26 16:17 ` fan
2024-03-27 15:43 ` Dave Jiang
2024-04-05 18:19 ` Ira Weiny
2024-04-06 0:01 ` Dave Jiang
2024-05-14 2:40 ` Zhijian Li (Fujitsu)
2024-03-24 23:18 ` [PATCH 05/26] cxl/core: Simplify cxl_dpa_set_mode() Ira Weiny
2024-03-25 17:46 ` Jonathan Cameron
2024-03-25 21:38 ` Davidlohr Bueso
2024-03-26 16:25 ` fan
2024-03-26 17:46 ` Dave Jiang
2024-04-05 19:21 ` Ira Weiny
2024-04-06 0:02 ` Dave Jiang
2024-04-09 0:43 ` Alison Schofield
2024-05-03 19:09 ` Ira Weiny
2024-05-03 20:33 ` Alison Schofield
2024-05-04 1:19 ` Dan Williams
2024-05-06 4:06 ` Ira Weiny
2024-05-04 4:13 ` Dan Williams
2024-05-06 3:46 ` Ira Weiny
2024-03-24 23:18 ` [PATCH 06/26] cxl/port: Add Dynamic Capacity mode support to endpoint decoders ira.weiny
2024-03-26 16:35 ` fan
2024-04-05 19:50 ` Ira Weiny
2024-03-26 17:58 ` Dave Jiang
2024-04-05 20:34 ` Ira Weiny
2024-04-04 8:32 ` Jonathan Cameron
2024-04-05 20:56 ` Ira Weiny
2024-05-06 16:22 ` Dan Williams
2024-05-10 5:31 ` Ira Weiny
2024-04-10 20:33 ` Alison Schofield
2024-03-24 23:18 ` [PATCH 07/26] cxl/port: Add dynamic capacity size " ira.weiny
2024-04-05 13:54 ` Jonathan Cameron
2024-05-03 17:09 ` Ira Weiny
2024-05-03 17:21 ` Dan Williams
2024-05-06 4:07 ` Ira Weiny
2024-04-10 22:50 ` Alison Schofield
2024-03-24 23:18 ` [PATCH 08/26] cxl/mem: Expose device dynamic capacity capabilities ira.weiny
2024-03-25 23:40 ` Davidlohr Bueso
2024-03-26 18:30 ` fan
2024-04-04 8:44 ` Jonathan Cameron
2024-04-04 8:51 ` Jonathan Cameron
2024-03-24 23:18 ` [PATCH 09/26] cxl/region: Add Dynamic Capacity CXL region support ira.weiny
2024-03-26 22:31 ` fan
2024-04-10 4:25 ` Ira Weiny
2024-03-27 17:27 ` Dave Jiang
2024-04-10 4:35 ` Ira Weiny
2024-04-04 10:26 ` Jonathan Cameron
2024-04-10 4:40 ` Ira Weiny
2024-03-24 23:18 ` [PATCH 10/26] cxl/events: Factor out event msgnum configuration Ira Weiny
2024-03-27 17:38 ` Dave Jiang
2024-04-04 15:07 ` Jonathan Cameron
2024-03-24 23:18 ` [PATCH 11/26] cxl/pci: Delay event buffer allocation Ira Weiny
2024-03-25 22:26 ` Davidlohr Bueso
2024-03-27 17:38 ` Dave Jiang
2024-04-04 15:08 ` Jonathan Cameron
2024-03-24 23:18 ` [PATCH 12/26] cxl/pci: Factor out interrupt policy check Ira Weiny
2024-03-27 17:41 ` Dave Jiang
2024-04-04 15:10 ` Jonathan Cameron
2024-03-24 23:18 ` [PATCH 13/26] cxl/mem: Configure dynamic capacity interrupts ira.weiny
2024-03-26 23:12 ` fan
2024-04-10 4:48 ` Ira Weiny
2024-03-27 17:54 ` Dave Jiang
2024-04-10 5:26 ` Ira Weiny
2024-04-04 15:22 ` Jonathan Cameron
2024-04-10 5:34 ` Ira Weiny
2024-04-10 23:23 ` Alison Schofield
2024-05-06 16:56 ` Dan Williams
2024-03-24 23:18 ` [PATCH 14/26] cxl/region: Read existing extents on region creation ira.weiny
2024-03-26 23:27 ` fan
2024-04-10 5:46 ` Ira Weiny
2024-03-27 17:45 ` fan
2024-04-10 6:19 ` Ira Weiny
2024-03-27 18:31 ` Dave Jiang
2024-04-10 6:09 ` Ira Weiny
2024-04-02 13:57 ` Jørgen Hansen
2024-04-10 6:29 ` Ira Weiny
2024-04-04 16:04 ` Jonathan Cameron
2024-04-04 16:13 ` Jonathan Cameron
2024-04-10 17:44 ` Alison Schofield
2024-05-06 18:34 ` Dan Williams
2024-03-24 23:18 ` [PATCH 15/26] range: Add range_overlaps() Ira Weiny
2024-03-25 18:33 ` David Sterba
2024-03-25 21:24 ` Davidlohr Bueso
2024-03-26 12:51 ` Johannes Thumshirn
2024-03-27 17:36 ` fan
2024-03-28 20:09 ` Dave Jiang
2024-04-04 16:06 ` Jonathan Cameron
2024-03-24 23:18 ` [PATCH 16/26] cxl/extent: Realize extent devices ira.weiny
2024-03-27 22:34 ` fan
2024-03-28 21:11 ` Dave Jiang
2024-04-24 19:57 ` Ira Weiny
2024-04-04 16:32 ` Jonathan Cameron
2024-04-30 3:23 ` Ira Weiny
2024-05-02 21:12 ` Dan Williams
2024-05-06 4:35 ` Ira Weiny
2024-04-11 0:09 ` Alison Schofield
2024-05-07 1:30 ` Dan Williams
2024-03-24 23:18 ` [PATCH 17/26] dax/region: Create extent resources on DAX region driver load ira.weiny
2024-04-04 16:36 ` Jonathan Cameron
2024-04-09 16:22 ` fan
2024-05-07 2:31 ` Dan Williams
2024-03-24 23:18 ` [PATCH 18/26] cxl/mem: Handle DCD add & release capacity events ira.weiny
2024-04-04 17:03 ` Jonathan Cameron
2024-05-07 5:04 ` Dan Williams
2024-03-24 23:18 ` [PATCH 19/26] dax/bus: Factor out dev dax resize logic Ira Weiny
2024-04-04 17:15 ` Jonathan Cameron
2024-03-24 23:18 ` [PATCH 20/26] dax: Document dax dev range tuple Ira Weiny
2024-04-01 17:06 ` Dave Jiang
2024-04-04 17:19 ` Jonathan Cameron
2024-03-24 23:18 ` [PATCH 21/26] dax/region: Prevent range mapping allocation on sparse regions Ira Weiny
2024-04-01 17:07 ` Dave Jiang
2024-04-10 23:02 ` Alison Schofield
2024-03-24 23:18 ` [PATCH 22/26] dax/region: Support DAX device creation on sparse DAX regions Ira Weiny
2024-04-04 17:36 ` Jonathan Cameron
2024-03-24 23:18 ` [PATCH 23/26] cxl/mem: Trace Dynamic capacity Event Record ira.weiny
2024-04-01 17:56 ` Dave Jiang
2024-04-04 17:38 ` Jonathan Cameron
2024-04-10 17:03 ` Alison Schofield
2024-03-24 23:18 ` [PATCH 24/26] tools/testing/cxl: Make event logs dynamic Ira Weiny
2024-03-24 23:18 ` [PATCH 25/26] tools/testing/cxl: Add DC Regions to mock mem data Ira Weiny
2024-03-24 23:18 ` [PATCH 26/26] tools/testing/cxl: Add Dynamic Capacity events Ira Weiny
2024-03-25 19:24 ` [PATCH 00/26] DCD: Add support for Dynamic Capacity Devices (DCD) fan
2024-03-28 5:20 ` Ira Weiny
2024-04-03 20:39 ` Jonathan Cameron
2024-04-04 10:20 ` Jonathan Cameron
2024-04-04 17:49 ` Jonathan Cameron
2024-05-01 23:49 ` Ira Weiny
2024-05-03 9:20 ` Jonathan Cameron
2024-05-06 4:24 ` Ira Weiny
2024-05-08 14:43 ` Jonathan Cameron
2024-04-10 18:01 ` Alison Schofield
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