Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c0c03574 authored by Manoj Prabhu B's avatar Manoj Prabhu B
Browse files

memshare: Add support for memshare driver 



MPSS does the handshake operation with kernel QMI service
which interacts with APSS. The memshare driver implements
a kernel QMI service in APSS, which is responsible for
providing contiguous physical memory to MPSS when modem
requires additional memory.

CRs-Fixed: 2030912
Change-Id: I3fdc019248cfb0e8cd338596dcf2c212abd4f00a
Signed-off-by: default avatarManoj Prabhu B <bmanoj@codeaurora.org>
parent b674669d

Documentation/devicetree/bindings/arm/msm/heap-sharing.txt

0 → 100644
+44 −0
Original line number Diff line number Diff line 
* Memory Share Driver (MEMSHARE)



The Memshare driver implements a Kernel QMI service on the

LA-APSS, which is responsible for providing contiguous physical

memory to MPSS for use cases when the modem requires additional

memory (e.g. GPS).



Required properties for Memshare



-Root Node-



- compatible:	Must be "qcom,memshare"



Required properties for child nodes:



- compatible:	Must be "qcom,memshare-peripheral"



- qcom,peripheral-size:	Indicates the size (in bytes) required for that child.



- qcom,client-id:	Indicates the client id of the child node.



- label:	Indicates the peripheral information for the node. Should be one of

  the following:

  - modem	/* Represent Modem Peripheral */

  - adsp	/* Represent ADSP Peripheral */

  - wcnss	/* Represent WCNSS Peripheral */



Optional properties for child nodes:



- qcom,allocate-boot-time:	Indicates whether clients needs boot time memory allocation.



Example:



qcom,memshare {

	compatible = "qcom,memshare";



	qcom,client_1 {

		compatible = "qcom,memshare-peripheral";

		qcom,peripheral-size = <0x200000>;

		qcom,client-id = <0>;

		qcom,allocate-boot-time;

		label = "modem";

	};

};

drivers/soc/qcom/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -701,3 +701,5 @@ config QCOM_FORCE_WDOG_BITE_ON_PANIC 
	  This forces a watchdog bite when the device restarts due to a

	  kernel panic. On certain MSM SoCs, this provides us

	  additional debugging information.



source "drivers/soc/qcom/memshare/Kconfig"

drivers/soc/qcom/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -56,6 +56,7 @@ obj-$(CONFIG_MSM_SYSTEM_HEALTH_MONITOR) += system_health_monitor.o 
obj-$(CONFIG_MSM_SYSMON_GLINK_COMM) += sysmon-glink.o sysmon-qmi.o

obj-$(CONFIG_ICNSS) += icnss.o wlan_firmware_service_v01.o icnss_utils.o



obj-$(CONFIG_MEM_SHARE_QMI_SERVICE)		+= memshare/

obj-$(CONFIG_MSM_PIL_SSR_GENERIC) += subsys-pil-tz.o

obj-$(CONFIG_MSM_PIL_MSS_QDSP6V5) += pil-q6v5.o pil-msa.o pil-q6v5-mss.o

obj-$(CONFIG_MSM_PIL)   +=      peripheral-loader.o

drivers/soc/qcom/memshare/Kconfig

0 → 100644
+9 −0
Original line number Diff line number Diff line 
config MEM_SHARE_QMI_SERVICE

       depends on MSM_QMI_INTERFACE

       bool "Shared Heap for external processors"

       help

		Memory Share Kernel Qualcomm Messaging Interface Service

		receives requests from Modem Processor Sub System

		for heap alloc/free from Application Processor

		Sub System and send a response back to client with

		proper handle/address.

drivers/soc/qcom/memshare/Makefile

0 → 100644
+1 −0
Original line number Diff line number Diff line 
obj-$(CONFIG_MEM_SHARE_QMI_SERVICE) := heap_mem_ext_v01.o msm_memshare.o
 
 No newline at end of file