summaryrefslogtreecommitdiff
path: root/arch/metag/tbx/tbictx.S
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2018-04-02 20:20:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-02 20:20:12 -0700
commitf5a8eb632b562bd9c16c389f5db3a5260fba4157 (patch)
tree82687234d772ff8f72a31e598fe16553885c56c9 /arch/metag/tbx/tbictx.S
parentc9297d284126b80c9cfd72c690e0da531c99fc48 (diff)
parentdd3b8c329aa270027fba61a02a12600972dc3983 (diff)
Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pul removal of obsolete architecture ports from Arnd Bergmann: "This removes the entire architecture code for blackfin, cris, frv, m32r, metag, mn10300, score, and tile, including the associated device drivers. I have been working with the (former) maintainers for each one to ensure that my interpretation was right and the code is definitely unused in mainline kernels. Many had fond memories of working on the respective ports to start with and getting them included in upstream, but also saw no point in keeping the port alive without any users. In the end, it seems that while the eight architectures are extremely different, they all suffered the same fate: There was one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem, which was more costly than licensing newer off-the-shelf CPU cores from a third party (typically ARM, MIPS, or RISC-V). It seems that all the SoC product lines are still around, but have not used the custom CPU architectures for several years at this point. In contrast, CPU instruction sets that remain popular and have actively maintained kernel ports tend to all be used across multiple licensees. [ See the new nds32 port merged in the previous commit for the next generation of "one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem" - Linus ] The removal came out of a discussion that is now documented at https://lwn.net/Articles/748074/. Unlike the original plans, I'm not marking any ports as deprecated but remove them all at once after I made sure that they are all unused. Some architectures (notably tile, mn10300, and blackfin) are still being shipped in products with old kernels, but those products will never be updated to newer kernel releases. After this series, we still have a few architectures without mainline gcc support: - unicore32 and hexagon both have very outdated gcc releases, but the maintainers promised to work on providing something newer. At least in case of hexagon, this will only be llvm, not gcc. - openrisc, risc-v and nds32 are still in the process of finishing their support or getting it added to mainline gcc in the first place. They all have patched gcc-7.3 ports that work to some degree, but complete upstream support won't happen before gcc-8.1. Csky posted their first kernel patch set last week, their situation will be similar [ Palmer Dabbelt points out that RISC-V support is in mainline gcc since gcc-7, although gcc-7.3.0 is the recommended minimum - Linus ]" This really says it all: 2498 files changed, 95 insertions(+), 467668 deletions(-) * tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits) MAINTAINERS: UNICORE32: Change email account staging: iio: remove iio-trig-bfin-timer driver tty: hvc: remove tile driver tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers serial: remove tile uart driver serial: remove m32r_sio driver serial: remove blackfin drivers serial: remove cris/etrax uart drivers usb: Remove Blackfin references in USB support usb: isp1362: remove blackfin arch glue usb: musb: remove blackfin port usb: host: remove tilegx platform glue pwm: remove pwm-bfin driver i2c: remove bfin-twi driver spi: remove blackfin related host drivers watchdog: remove bfin_wdt driver can: remove bfin_can driver mmc: remove bfin_sdh driver input: misc: remove blackfin rotary driver input: keyboard: remove bf54x driver ...
Diffstat (limited to 'arch/metag/tbx/tbictx.S')
-rw-r--r--arch/metag/tbx/tbictx.S366
1 files changed, 0 insertions, 366 deletions
diff --git a/arch/metag/tbx/tbictx.S b/arch/metag/tbx/tbictx.S
deleted file mode 100644
index 19af983a13ae..000000000000
--- a/arch/metag/tbx/tbictx.S
+++ /dev/null
@@ -1,366 +0,0 @@
-/*
- * tbictx.S
- *
- * Copyright (C) 2001, 2002, 2007, 2012 Imagination Technologies.
- *
- * This program is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License version 2 as published by the
- * Free Software Foundation.
- *
- * Explicit state save and restore routines forming part of the thread binary
- * interface for META processors
- */
-
- .file "tbictx.S"
-#include <asm/metag_regs.h>
-#include <asm/tbx.h>
-
-#ifdef METAC_1_0
-/* Ax.4 is NOT saved in XAX3 */
-#define A0_4
-#else
-/* Ax.4 is saved in XAX4 */
-#define A0_4 A0.4,
-#endif
-
-
-/* Size of the TBICTX structure */
-#define TBICTX_BYTES ((TBICTX_AX_REGS*8)+TBICTX_AX)
-
-/*
- * TBIRES __TBINestInts( TBIRES State, void *pExt, int NoNestMask )
- */
- .text
- .balign 4
- .global ___TBINestInts
- .type ___TBINestInts,function
-___TBINestInts:
- XOR D0Ar4,D0Ar4,#-1 /* D0Ar4 = ~TrigBit */
- AND D0Ar4,D0Ar4,#0xFFFF /* D0Ar4 &= 0xFFFF */
- MOV D0Ar6,TXMASKI /* BGNDHALT currently enabled? */
- TSTT D0Ar2,#TBICTX_XDX8_BIT+TBICTX_XAXX_BIT+TBICTX_XHL2_BIT+TBICTX_XTDP_BIT+TBICTX_XCBF_BIT
- AND D0Ar4,D0Ar2,D0Ar4 /* D0Ar4 = Ints to allow */
- XOR D0Ar2,D0Ar2,D0Ar4 /* Less Ints in TrigMask */
- BNZ ___TBINestInts2 /* Jump if ctx save required! */
- TSTT D0Ar2,#TBICTX_CBUF_BIT+TBICTX_CBRP_BIT /* Is catch state dirty? */
- OR D0Ar4,D0Ar4,D0Ar6 /* Or in TXMASKI BGNDHALT if set */
- TSTNZ D0Ar4,D0Ar4 /* Yes: AND triggers enabled */
- MOV D0Re0,D0Ar2 /* Update State argument */
- MOV D1Re0,D1Ar1 /* with less Ints in TrigMask */
- MOVZ TXMASKI,D0Ar4 /* Early return: Enable Ints */
- MOVZ PC,D1RtP /* Early return */
- .size ___TBINestInts,.-___TBINestInts
-/*
- * Drop thru into sub-function-
- */
- .global ___TBINestInts2
- .type ___TBINestInts2,function
-___TBINestInts2:
- MOV D0FrT,A0FrP /* Full entry sequence so we */
- ADD A0FrP,A0StP,#0 /* can make sub-calls */
- MSETL [A0StP],D0FrT,D0.5,D0.6 /* and preserve our result */
- ORT D0Ar2,D0Ar2,#TBICTX_XCBF_BIT /* Add in XCBF save request */
- MOV D0.5,D0Ar2 /* Save State in DX.5 */
- MOV D1.5,D1Ar1
- OR D0.6,D0Ar4,D0Ar6 /* Save TrigMask in D0.6 */
- MOVT D1RtP,#HI(___TBICtxSave) /* Save catch buffer */
- CALL D1RtP,#LO(___TBICtxSave)
- MOV TXMASKI,D0.6 /* Allow Ints */
- MOV D0Re0,D0.5 /* Return State */
- MOV D1Re0,D1.5
- MGETL D0FrT,D0.5,D0.6,[A0FrP] /* Full exit sequence */
- SUB A0StP,A0FrP,#(8*3)
- MOV A0FrP,D0FrT
- MOV PC,D1RtP
- .size ___TBINestInts2,.-___TBINestInts2
-
-/*
- * void *__TBICtxSave( TBIRES State, void *pExt )
- *
- * D0Ar2 contains TBICTX_*_BIT values that control what
- * extended data is to be saved beyond the end of D1Ar1.
- * These bits must be ored into the SaveMask of this structure.
- *
- * Virtually all possible scratch registers are used.
- *
- * The D1Ar1 parameter is only used as the basis for saving
- * CBUF state.
- */
-/*
- * If TBICTX_XEXT_BIT is specified in State. then State.pCtx->Ext is
- * utilised to save the base address of the context save area and
- * the extended states saved. The XEXT flag then indicates that the
- * original state of the A0.2 and A1.2 registers from TBICTX.Ext.AX2
- * are stored as the first part of the extended state structure.
- */
- .balign 4
- .global ___TBICtxSave
- .type ___TBICtxSave,function
-___TBICtxSave:
- GETD D0Re0,[D1Ar1+#TBICTX_SaveMask-2] /* Get SaveMask */
- TSTT D0Ar2,#TBICTX_XDX8_BIT+TBICTX_XAXX_BIT+TBICTX_XHL2_BIT+TBICTX_XTDP_BIT+TBICTX_XEXT_BIT
- /* Just XCBF to save? */
- MOV A0.2,D1Ar3 /* Save pointer into A0.2 */
- MOV A1.2,D1RtP /* Free off D0FrT:D1RtP pair */
- BZ $LCtxSaveCBUF /* Yes: Only XCBF may be saved */
- TSTT D0Ar2,#TBICTX_XEXT_BIT /* Extended base-state model? */
- BZ $LCtxSaveXDX8
- GETL D0Ar6,D1Ar5,[D1Ar1+#TBICTX_Ext_AX2] /* Get A0.2, A1.2 state */
- MOV D0Ar4,D0Ar2 /* Extract Ctx.SaveFlags value */
- ANDMT D0Ar4,D0Ar4,#TBICTX_XDX8_BIT+TBICTX_XAXX_BIT+TBICTX_XHL2_BIT+TBICTX_XTDP_BIT+TBICTX_XEXT_BIT
- SETD [D1Ar1+#TBICTX_Ext_Ctx_pExt],A0.2
- SETD [D1Ar1+#TBICTX_Ext_Ctx_SaveMask-2],D0Ar4
- SETL [A0.2++],D0Ar6,D1Ar5 /* Save A0.2, A1.2 state */
-$LCtxSaveXDX8:
- TSTT D0Ar2,#TBICTX_XDX8_BIT /* Save extended DX regs? */
- BZ $LCtxSaveXAXX
-/*
- * Save 8 extra DX registers
- */
- MSETL [A0.2],D0.8,D0.9,D0.10,D0.11,D0.12,D0.13,D0.14,D0.15
-$LCtxSaveXAXX:
- TSTT D0Ar2,#TBICTX_XAXX_BIT /* Save extended AX regs? */
- SWAP D0Re0,A0.2 /* pDst into D0Re0 */
- BZ $LCtxSaveXHL2
-/*
- * Save 4 extra AX registers
- */
- MSETL [D0Re0], A0_4 A0.5,A0.6,A0.7 /* Save 8*3 bytes */
-$LCtxSaveXHL2:
- TSTT D0Ar2,#TBICTX_XHL2_BIT /* Save hardware-loop regs? */
- SWAP D0Re0,A0.2 /* pDst back into A0.2 */
- MOV D0Ar6,TXL1START
- MOV D1Ar5,TXL2START
- BZ $LCtxSaveXTDP
-/*
- * Save hardware loop registers
- */
- SETL [A0.2++],D0Ar6,D1Ar5 /* Save 8*1 bytes */
- MOV D0Ar6,TXL1END
- MOV D1Ar5,TXL2END
- MOV D0FrT,TXL1COUNT
- MOV D1RtP,TXL2COUNT
- MSETL [A0.2],D0Ar6,D0FrT /* Save 8*2 bytes */
-/*
- * Clear loop counters to disable any current loops
- */
- XOR TXL1COUNT,D0FrT,D0FrT
- XOR TXL2COUNT,D1RtP,D1RtP
-$LCtxSaveXTDP:
- TSTT D0Ar2,#TBICTX_XTDP_BIT /* Save per-thread DSP regs? */
- BZ $LCtxSaveCBUF
-/*
- * Save per-thread DSP registers; ACC.0, PR.0, PI.1-3 (PI.0 is zero)
- */
-#ifndef CTX_NO_DSP
-D SETL [A0.2++],AC0.0,AC1.0 /* Save ACx.0 lower 32-bits */
-DH SETL [A0.2++],AC0.0,AC1.0 /* Save ACx.0 upper 32-bits */
-D SETL [A0.2++],D0AR.0,D1AR.0 /* Save DSP RAM registers */
-D SETL [A0.2++],D0AR.1,D1AR.1
-D SETL [A0.2++],D0AW.0,D1AW.0
-D SETL [A0.2++],D0AW.1,D1AW.1
-D SETL [A0.2++],D0BR.0,D1BR.0
-D SETL [A0.2++],D0BR.1,D1BR.1
-D SETL [A0.2++],D0BW.0,D1BW.0
-D SETL [A0.2++],D0BW.1,D1BW.1
-D SETL [A0.2++],D0ARI.0,D1ARI.0
-D SETL [A0.2++],D0ARI.1,D1ARI.1
-D SETL [A0.2++],D0AWI.0,D1AWI.0
-D SETL [A0.2++],D0AWI.1,D1AWI.1
-D SETL [A0.2++],D0BRI.0,D1BRI.0
-D SETL [A0.2++],D0BRI.1,D1BRI.1
-D SETL [A0.2++],D0BWI.0,D1BWI.0
-D SETL [A0.2++],D0BWI.1,D1BWI.1
-D SETD [A0.2++],T0
-D SETD [A0.2++],T1
-D SETD [A0.2++],T2
-D SETD [A0.2++],T3
-D SETD [A0.2++],T4
-D SETD [A0.2++],T5
-D SETD [A0.2++],T6
-D SETD [A0.2++],T7
-D SETD [A0.2++],T8
-D SETD [A0.2++],T9
-D SETD [A0.2++],TA
-D SETD [A0.2++],TB
-D SETD [A0.2++],TC
-D SETD [A0.2++],TD
-D SETD [A0.2++],TE
-D SETD [A0.2++],TF
-#else
- ADD A0.2,A0.2,#(8*18+4*16)
-#endif
- MOV D0Ar6,TXMRSIZE
- MOV D1Ar5,TXDRSIZE
- SETL [A0.2++],D0Ar6,D1Ar5 /* Save 8*1 bytes */
-
-$LCtxSaveCBUF:
-#ifdef TBI_1_3
- MOV D0Ar4,D0Re0 /* Copy Ctx Flags */
- ANDT D0Ar4,D0Ar4,#TBICTX_XCBF_BIT /* mask XCBF if already set */
- XOR D0Ar4,D0Ar4,#-1
- AND D0Ar2,D0Ar2,D0Ar4 /* remove XCBF if already set */
-#endif
- TSTT D0Ar2,#TBICTX_XCBF_BIT /* Want to save CBUF? */
- ANDT D0Ar2,D0Ar2,#TBICTX_XDX8_BIT+TBICTX_XAXX_BIT+TBICTX_XHL2_BIT+TBICTX_XTDP_BIT+TBICTX_XEXT_BIT
- OR D0Ar2,D0Ar2,D0Re0 /* Generate new SaveMask */
- SETD [D1Ar1+#TBICTX_SaveMask-2],D0Ar2/* Add in bits saved to TBICTX */
- MOV D0Re0,A0.2 /* Return end of save area */
- MOV D0Ar4,TXDIVTIME /* Get TXDIVTIME */
- MOVZ PC,A1.2 /* No: Early return */
- TSTT D0Ar2,#TBICTX_CBUF_BIT+TBICTX_CBRP_BIT /* Need to save CBUF? */
- MOVZ PC,A1.2 /* No: Early return */
- ORT D0Ar2,D0Ar2,#TBICTX_XCBF_BIT
- SETD [D1Ar1+#TBICTX_SaveMask-2],D0Ar2/* Add in XCBF bit to TBICTX */
- ADD A0.2,D1Ar1,#TBICTX_BYTES /* Dump CBUF state after TBICTX */
-/*
- * Save CBUF
- */
- SETD [A0.2+# 0],TXCATCH0 /* Restore TXCATCHn */
- SETD [A0.2+# 4],TXCATCH1
- TSTT D0Ar2,#TBICTX_CBRP_BIT /* ... RDDIRTY was/is set */
- SETD [A0.2+# 8],TXCATCH2
- SETD [A0.2+#12],TXCATCH3
- BZ $LCtxSaveComplete
- SETL [A0.2+#(2*8)],RD /* Save read pipeline */
- SETL [A0.2+#(3*8)],RD /* Save read pipeline */
- SETL [A0.2+#(4*8)],RD /* Save read pipeline */
- SETL [A0.2+#(5*8)],RD /* Save read pipeline */
- SETL [A0.2+#(6*8)],RD /* Save read pipeline */
- SETL [A0.2+#(7*8)],RD /* Save read pipeline */
- AND TXDIVTIME,D0Ar4,#TXDIVTIME_DIV_BITS /* Clear RPDIRTY */
-$LCtxSaveComplete:
- MOV PC,A1.2 /* Return */
- .size ___TBICtxSave,.-___TBICtxSave
-
-/*
- * void *__TBICtxRestore( TBIRES State, void *pExt )
- *
- * D0Ar2 contains TBICTX_*_BIT values that control what
- * extended data is to be recovered from D1Ar3 (pExt).
- *
- * Virtually all possible scratch registers are used.
- */
-/*
- * If TBICTX_XEXT_BIT is specified in State. Then the saved state of
- * the orginal A0.2 and A1.2 is restored from pExt and the XEXT
- * related flags are removed from State.pCtx->SaveMask.
- *
- */
- .balign 4
- .global ___TBICtxRestore
- .type ___TBICtxRestore,function
-___TBICtxRestore:
- GETD D0Ar6,[D1Ar1+#TBICTX_CurrMODE] /* Get TXMODE Value */
- ANDST D0Ar2,D0Ar2,#TBICTX_XDX8_BIT+TBICTX_XAXX_BIT+TBICTX_XHL2_BIT+TBICTX_XTDP_BIT+TBICTX_XEXT_BIT
- MOV D1Re0,D0Ar2 /* Keep flags in D1Re0 */
- MOV D0Re0,D1Ar3 /* D1Ar3 is default result */
- MOVZ PC,D1RtP /* Early return, nothing to do */
- ANDT D0Ar6,D0Ar6,#0xE000 /* Top bits of TXMODE required */
- MOV A0.3,D0Ar6 /* Save TXMODE for later */
- TSTT D1Re0,#TBICTX_XEXT_BIT /* Check for XEXT bit */
- BZ $LCtxRestXDX8
- GETD D0Ar4,[D1Ar1+#TBICTX_SaveMask-2]/* Get current SaveMask */
- GETL D0Ar6,D1Ar5,[D0Re0++] /* Restore A0.2, A1.2 state */
- ANDMT D0Ar4,D0Ar4,#(0xFFFF-(TBICTX_XDX8_BIT+TBICTX_XAXX_BIT+TBICTX_XHL2_BIT+TBICTX_XTDP_BIT+TBICTX_XEXT_BIT))
- SETD [D1Ar1+#TBICTX_SaveMask-2],D0Ar4/* New SaveMask */
-#ifdef METAC_1_0
- SETD [D1Ar1+#TBICTX_Ext_AX2_U0],D0Ar6
- MOV D0Ar6,D1Ar1
- SETD [D0Ar6+#TBICTX_Ext_AX2_U1],D1Ar5
-#else
- SETL [D1Ar1+#TBICTX_Ext_AX2],D0Ar6,D1Ar5
-#endif
-$LCtxRestXDX8:
- TSTT D1Re0,#TBICTX_XDX8_BIT /* Get extended DX regs? */
- MOV A1.2,D1RtP /* Free off D1RtP register */
- BZ $LCtxRestXAXX
-/*
- * Restore 8 extra DX registers
- */
- MGETL D0.8,D0.9,D0.10,D0.11,D0.12,D0.13,D0.14,D0.15,[D0Re0]
-$LCtxRestXAXX:
- TSTT D1Re0,#TBICTX_XAXX_BIT /* Get extended AX regs? */
- BZ $LCtxRestXHL2
-/*
- * Restore 3 extra AX registers
- */
- MGETL A0_4 A0.5,A0.6,A0.7,[D0Re0] /* Get 8*3 bytes */
-$LCtxRestXHL2:
- TSTT D1Re0,#TBICTX_XHL2_BIT /* Get hardware-loop regs? */
- BZ $LCtxRestXTDP
-/*
- * Get hardware loop registers
- */
- MGETL D0Ar6,D0Ar4,D0Ar2,[D0Re0] /* Get 8*3 bytes */
- MOV TXL1START,D0Ar6
- MOV TXL2START,D1Ar5
- MOV TXL1END,D0Ar4
- MOV TXL2END,D1Ar3
- MOV TXL1COUNT,D0Ar2
- MOV TXL2COUNT,D1Ar1
-$LCtxRestXTDP:
- TSTT D1Re0,#TBICTX_XTDP_BIT /* Get per-thread DSP regs? */
- MOVZ PC,A1.2 /* No: Early return */
-/*
- * Get per-thread DSP registers; ACC.0, PR.0, PI.1-3 (PI.0 is zero)
- */
- MOV A0.2,D0Re0
- GETL D0Ar6,D1Ar5,[D0Re0++#((16*4)+(18*8))]
-#ifndef CTX_NO_DSP
-D GETL AC0.0,AC1.0,[A0.2++] /* Restore ACx.0 lower 32-bits */
-DH GETL AC0.0,AC1.0,[A0.2++] /* Restore ACx.0 upper 32-bits */
-#else
- ADD A0.2,A0.2,#(2*8)
-#endif
- ADD D0Re0,D0Re0,#(2*4)
- MOV TXMODE,A0.3 /* Some TXMODE bits needed */
- MOV TXMRSIZE,D0Ar6
- MOV TXDRSIZE,D1Ar5
-#ifndef CTX_NO_DSP
-D GETL D0AR.0,D1AR.0,[A0.2++] /* Restore DSP RAM registers */
-D GETL D0AR.1,D1AR.1,[A0.2++]
-D GETL D0AW.0,D1AW.0,[A0.2++]
-D GETL D0AW.1,D1AW.1,[A0.2++]
-D GETL D0BR.0,D1BR.0,[A0.2++]
-D GETL D0BR.1,D1BR.1,[A0.2++]
-D GETL D0BW.0,D1BW.0,[A0.2++]
-D GETL D0BW.1,D1BW.1,[A0.2++]
-#else
- ADD A0.2,A0.2,#(8*8)
-#endif
- MOV TXMODE,#0 /* Restore TXMODE */
-#ifndef CTX_NO_DSP
-D GETL D0ARI.0,D1ARI.0,[A0.2++]
-D GETL D0ARI.1,D1ARI.1,[A0.2++]
-D GETL D0AWI.0,D1AWI.0,[A0.2++]
-D GETL D0AWI.1,D1AWI.1,[A0.2++]
-D GETL D0BRI.0,D1BRI.0,[A0.2++]
-D GETL D0BRI.1,D1BRI.1,[A0.2++]
-D GETL D0BWI.0,D1BWI.0,[A0.2++]
-D GETL D0BWI.1,D1BWI.1,[A0.2++]
-D GETD T0,[A0.2++]
-D GETD T1,[A0.2++]
-D GETD T2,[A0.2++]
-D GETD T3,[A0.2++]
-D GETD T4,[A0.2++]
-D GETD T5,[A0.2++]
-D GETD T6,[A0.2++]
-D GETD T7,[A0.2++]
-D GETD T8,[A0.2++]
-D GETD T9,[A0.2++]
-D GETD TA,[A0.2++]
-D GETD TB,[A0.2++]
-D GETD TC,[A0.2++]
-D GETD TD,[A0.2++]
-D GETD TE,[A0.2++]
-D GETD TF,[A0.2++]
-#else
- ADD A0.2,A0.2,#(8*8+4*16)
-#endif
- MOV PC,A1.2 /* Return */
- .size ___TBICtxRestore,.-___TBICtxRestore
-
-/*
- * End of tbictx.S
- */