I want to allocate memory by the ODP API, which will also seen by the hardware. As per my understanding address actually seen by the memory hardware is a physical address. Is there any way to find out the physical address? Might be there is a way to do but I am not able to figure it out.
Regards ________________________________________ From: Taras Kondratiuk <[email protected]> Sent: Sunday, January 18, 2015 4:40 PM To: Mrityunjay Kumar; [email protected]; [email protected] Subject: Re: [lng-odp] Regarding reserve memory where both SW + HW can access. On 01/18/2015 11:08 AM, Mrityunjay Kumar wrote: > Hi > > I want to reserve memory where both SW + HW can be access. I have > explore the code ODP v0.7. I come to know that we have only two flags: > > /* Share level */ > #define ODP_SHM_SW_ONLY 0x1 /**< Application SW only, no HW access */ > #define ODP_SHM_PROC 0x2 /**< Share with external processes */ > > I come across the ODP v0.7 directly from ODP v0.2. I have seen that in > ODP v0.2; we have option to store physical memory in odp_buffer_hdr_t; > but in latest release (ODP v0.7) option to store physical memory has > been removed. if some body point me if there is any option to map > between virtual to physical memory? > > odp_shm_create takes a flag argument which has two values 1. > ODP_SHM_SW_ONLY and 2. ODP_SHM_PROC, but odp_pktio uses 0. could we also > explicitly extend this flag list to work across platforms? Sorry I didn't get what is the issue. Could you please clarify your intent? ODP_SHM_SW_ONLY is an optimization flag which should be set only if a caller is sure that memory won't be used by HW (not passed into any ODP API). If ODP_SHM_SW_ONLY is not set, implementation should expect it to be used by HW and should act accordingly. -- Taras Kondratiuk "DISCLAIMER: This message is proprietary to Aricent and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. Aricent accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus." _______________________________________________ lng-odp mailing list [email protected] http://lists.linaro.org/mailman/listinfo/lng-odp
