From: Dave Jiang <dave.jiang@intel.com>
To: linux-cxl@vger.kernel.org, linux-pci@vger.kernel.org,
linux-acpi@vger.kernel.org
Cc: dan.j.williams@intel.com, ira.weiny@intel.com,
vishal.l.verma@intel.com, alison.schofield@intel.com,
rafael@kernel.org, bhelgaas@google.com, robert.moore@intel.com
Subject: [PATCH 17/18] cxl: Attach QTG IDs to the DPA ranges for the device
Date: Mon, 06 Feb 2023 13:51:55 -0700 [thread overview]
Message-ID: <167571671461.587790.3035047445704886954.stgit@djiang5-mobl3.local> (raw)
In-Reply-To: <167571650007.587790.10040913293130712882.stgit@djiang5-mobl3.local>
Match the DPA ranges of the mem device and the calcuated DPA range attached
to the DSMAS. If a match is found, then assign the QTG ID to the relevant
DPA range of the memory device.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
drivers/cxl/core/mbox.c | 2 ++
drivers/cxl/cxlmem.h | 2 ++
drivers/cxl/port.c | 35 +++++++++++++++++++++++++++++++++++
3 files changed, 39 insertions(+)
diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
index b03fba212799..2a7b07d65010 100644
--- a/drivers/cxl/core/mbox.c
+++ b/drivers/cxl/core/mbox.c
@@ -869,6 +869,8 @@ struct cxl_dev_state *cxl_dev_state_create(struct device *dev)
mutex_init(&cxlds->mbox_mutex);
cxlds->dev = dev;
+ cxlds->pmem_qtg_id = -1;
+ cxlds->ram_qtg_id = -1;
return cxlds;
}
diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h
index ab138004f644..d88b88ecc807 100644
--- a/drivers/cxl/cxlmem.h
+++ b/drivers/cxl/cxlmem.h
@@ -251,6 +251,8 @@ struct cxl_dev_state {
struct resource dpa_res;
struct resource pmem_res;
struct resource ram_res;
+ int pmem_qtg_id;
+ int ram_qtg_id;
u64 total_bytes;
u64 volatile_only_bytes;
u64 persistent_only_bytes;
diff --git a/drivers/cxl/port.c b/drivers/cxl/port.c
index 6b2ad22487f5..c4cee69d6625 100644
--- a/drivers/cxl/port.c
+++ b/drivers/cxl/port.c
@@ -68,6 +68,39 @@ static int cxl_port_qos_calculate(struct cxl_port *port)
return 0;
}
+static bool dpa_match_qtg_range(struct range *dpa, struct range *qtg)
+{
+ if (dpa->start >= qtg->start && dpa->end <= qtg->end)
+ return true;
+ return false;
+}
+
+static void cxl_dev_set_qtg(struct cxl_port *port, struct cxl_dev_state *cxlds)
+{
+ struct dsmas_entry *dent;
+ struct range ram_range = {
+ .start = cxlds->ram_res.start,
+ .end = cxlds->ram_res.end,
+ };
+ struct range pmem_range = {
+ .start = cxlds->pmem_res.start,
+ .end = cxlds->pmem_res.end,
+ };
+
+ mutex_lock(&port->cdat.dsmas_lock);
+ list_for_each_entry(dent, &port->cdat.dsmas_list, list) {
+ if (dpa_match_qtg_range(&ram_range, &dent->dpa_range)) {
+ cxlds->ram_qtg_id = dent->qtg_id;
+ break;
+ }
+ if (dpa_match_qtg_range(&pmem_range, &dent->dpa_range)) {
+ cxlds->pmem_qtg_id = dent->qtg_id;
+ break;
+ }
+ }
+ mutex_unlock(&port->cdat.dsmas_lock);
+}
+
static int cxl_port_probe(struct device *dev)
{
struct cxl_port *port = to_cxl_port(dev);
@@ -134,6 +167,8 @@ static int cxl_port_probe(struct device *dev)
rc = cxl_mem_create_range_info(cxlds);
if (rc)
return rc;
+
+ cxl_dev_set_qtg(port, cxlds);
}
rc = devm_cxl_enumerate_decoders(cxlhdm);
next prev parent reply other threads:[~2023-02-06 20:52 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-06 20:49 [PATCH 00/18] cxl: Add support for QTG ID retrieval for CXL subsystem Dave Jiang
2023-02-06 20:49 ` [PATCH 01/18] cxl: Export QTG ids from CFMWS to sysfs Dave Jiang
2023-02-09 11:15 ` Jonathan Cameron
2023-02-09 17:28 ` Dave Jiang
2023-02-06 20:49 ` [PATCH 02/18] ACPICA: Export acpi_ut_verify_cdat_checksum() Dave Jiang
2023-02-07 14:19 ` Rafael J. Wysocki
2023-02-07 15:47 ` Dave Jiang
2023-02-09 11:30 ` Jonathan Cameron
2023-02-06 20:49 ` [PATCH 03/18] cxl: Add checksum verification to CDAT from CXL Dave Jiang
2023-02-09 11:34 ` Jonathan Cameron
2023-02-09 17:31 ` Dave Jiang
2023-02-06 20:49 ` [PATCH 04/18] cxl: Add common helpers for cdat parsing Dave Jiang
2023-02-09 11:58 ` Jonathan Cameron
2023-02-09 22:57 ` Dave Jiang
2023-02-11 10:18 ` Lukas Wunner
2023-02-14 13:17 ` Jonathan Cameron
2023-02-14 20:36 ` Dave Jiang
2023-02-06 20:50 ` [PATCH 05/18] ACPICA: Fix 'struct acpi_cdat_dsmas' spelling mistake Dave Jiang
2023-02-06 22:00 ` Lukas Wunner
2023-02-06 20:50 ` [PATCH 06/18] cxl: Add callback to parse the DSMAS subtables from CDAT Dave Jiang
2023-02-09 13:29 ` Jonathan Cameron
2023-02-13 22:55 ` Dave Jiang
2023-02-06 20:50 ` [PATCH 07/18] cxl: Add callback to parse the DSLBIS subtable " Dave Jiang
2023-02-09 13:50 ` Jonathan Cameron
2023-02-14 0:24 ` Dave Jiang
2023-02-06 20:50 ` [PATCH 08/18] cxl: Add support for _DSM Function for retrieving QTG ID Dave Jiang
2023-02-09 14:02 ` Jonathan Cameron
2023-02-14 21:07 ` Dave Jiang
2023-02-06 20:50 ` [PATCH 09/18] cxl: Add helper function to retrieve ACPI handle of CXL root device Dave Jiang
2023-02-09 14:10 ` Jonathan Cameron
2023-02-14 21:29 ` Dave Jiang
2023-02-06 20:50 ` [PATCH 10/18] PCI: Export pcie_get_speed() using the code from sysfs PCI link speed show function Dave Jiang
2023-02-06 22:27 ` Lukas Wunner
2023-02-07 20:29 ` Dave Jiang
2023-02-06 20:51 ` [PATCH 11/18] PCI: Export pcie_get_width() using the code from sysfs PCI link width " Dave Jiang
2023-02-06 22:43 ` Bjorn Helgaas
2023-02-07 20:35 ` Dave Jiang
2023-02-06 20:51 ` [PATCH 12/18] cxl: Add helpers to calculate pci latency for the CXL device Dave Jiang
2023-02-06 22:39 ` Bjorn Helgaas
2023-02-07 20:51 ` Dave Jiang
2023-02-08 22:15 ` Bjorn Helgaas
2023-02-08 23:56 ` Dave Jiang
2023-02-09 15:10 ` Jonathan Cameron
2023-02-14 22:22 ` Dave Jiang
2023-02-15 12:13 ` Jonathan Cameron
2023-02-22 17:54 ` Dave Jiang
2023-02-09 15:16 ` Jonathan Cameron
2023-02-06 20:51 ` [PATCH 13/18] cxl: Add latency and bandwidth calculations for the CXL path Dave Jiang
2023-02-09 15:24 ` Jonathan Cameron
2023-02-14 23:03 ` Dave Jiang
2023-02-15 13:17 ` Jonathan Cameron
2023-02-15 16:38 ` Dave Jiang
2023-02-06 20:51 ` [PATCH 14/18] cxl: Wait Memory_Info_Valid before access memory related info Dave Jiang
2023-02-09 15:29 ` Jonathan Cameron
2023-02-06 20:51 ` [PATCH 15/18] cxl: Move identify and partition query from pci probe to port probe Dave Jiang
2023-02-09 15:29 ` Jonathan Cameron
2023-02-06 20:51 ` [PATCH 16/18] cxl: Move reading of CDAT data from device to after media is ready Dave Jiang
2023-02-06 22:17 ` Lukas Wunner
2023-02-07 20:55 ` Dave Jiang
2023-02-09 15:31 ` Jonathan Cameron
2023-02-06 20:51 ` Dave Jiang [this message]
2023-02-09 15:34 ` [PATCH 17/18] cxl: Attach QTG IDs to the DPA ranges for the device Jonathan Cameron
2023-02-06 20:52 ` [PATCH 18/18] cxl: Export sysfs attributes for device QTG IDs Dave Jiang
2023-02-09 15:41 ` Jonathan Cameron
2023-03-23 23:20 ` Dan Williams
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