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| Filename | Latest commit message | Latest commit date |
|---|---|---|
ee40bd1e0c
Region Flush has a weird programming model. 1. Flush or Invalidate is selected by DC_CTRL.RGN_OP 2 Flush-n-Invalidate is done by DC_CTRL.IM Given the code structuring before, case #2 above was generating two seperate updates to DC_CTRL which was pointless. | 80a342b0 <__dma_cache_wback_inv_l1>: | 80a342b0: clri r4 | 80a342b4: lr r2,[dc_ctrl] | 80a342b8: bset_s r2,r2,0x6 | 80a342ba: sr r2,[dc_ctrl] <-- FIRST | | 80a342be: bmskn r3,r0,0x5 | | 80a342c2: lr r2,[dc_ctrl] | 80a342c6: and r2,r2,0xfffff1ff | 80a342ce: bset_s r2,r2,0x9 | 80a342d0: sr r2,[dc_ctrl] <-- SECOND | | 80a342d4: add_s r1,r1,0x3f | 80a342d6: bmsk_s r0,r0,0x5 | 80a342d8: add_s r0,r0,r1 | 80a342da: add_s r0,r0,r3 | 80a342dc: sr r0,[78] | 80a342e0: sr r3,[77] |... |... So move setting of DC_CTRL.RGN_OP into __before_dc_op() and combine with any other update. | 80b63324 <__dma_cache_wback_inv_l1>: | 80b63324: clri r3 | 80b63328: lr r2,[dc_ctrl] | 80b6332c: and r2,r2,0xfffff1ff | 80b63334: or r2,r2,576 | 80b63338: sr r2,[dc_ctrl] | | 80b6333c: add_s r1,r1,0x3f | 80b6333e: bmskn r2,r0,0x5 | 80b63342: add_s r0,r0,r1 | 80b63344: sr r0,[78] | 80b63348: sr r2,[77] Signed-off-by: Vineet Gupta <vgupta@synopsys.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.