From: Ali Saidi Date: Tue, 22 Jun 2004 21:20:19 +0000 (-0400) Subject: ifdefed ev5 vs. ev6 differences so Tlaser can work in the linux tree X-Git-Tag: m5_1.0_tutorial~294^2~1^2 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f37eb6f5c7184acb6df46d14d9e48a22c8ac8134;p=gem5.git ifdefed ev5 vs. ev6 differences so Tlaser can work in the linux tree arch/alpha/alpha_memory.cc: arch/alpha/ev5.hh: Ifdefed TLASER code arch/alpha/vtophys.cc: added back some code andrew removed and couldn't remember why. --HG-- extra : convert_revision : f00d255f7a8a7bdb6e74f061dd014188e3b39e73 --- diff --git a/arch/alpha/alpha_memory.cc b/arch/alpha/alpha_memory.cc index f8be89cbe..a40ad7a5c 100644 --- a/arch/alpha/alpha_memory.cc +++ b/arch/alpha/alpha_memory.cc @@ -101,18 +101,34 @@ AlphaTLB::checkCacheability(MemReqPtr &req) * to catch a weird case where both are used, which shouldn't happen. */ + +#ifdef ALPHA_TLASER + if (req->paddr & PA_UNCACHED_BIT_39) { +#else if (req->paddr & PA_UNCACHED_BIT_43) { +#endif // IPR memory space not implemented - if (PA_IPR_SPACE(req->paddr)) - if (!req->xc->misspeculating()) - panic("IPR memory space not implemented! PA=%x\n", - req->paddr); - - // mark request as uncacheable - req->flags |= UNCACHEABLE; + if (PA_IPR_SPACE(req->paddr)) { + if (!req->xc->misspeculating()) { + switch (req->paddr) { + case ULL(0xFFFFF00188): + req->data = 0; + break; + + default: + panic("IPR memory space not implemented! PA=%x\n", + req->paddr); + } + } + } else { + // mark request as uncacheable + req->flags |= UNCACHEABLE; - // Clear bits 42:35 of the physical address (10-2 in Tsunami manual) - req->paddr &= PA_UNCACHED_MASK; +#ifndef ALPHA_TLASER + // Clear bits 42:35 of the physical address (10-2 in Tsunami manual) + req->paddr &= PA_UNCACHED_MASK; +#endif + } } } @@ -301,7 +317,13 @@ AlphaITB::translate(MemReqPtr &req) const // VA<42:41> == 2, VA<39:13> maps directly to PA<39:13> for EV5 // VA<47:41> == 0x7e, VA<40:13> maps directly to PA<40:13> for EV6 +#ifdef ALPHA_TLASER + if ((MCSR_SP(ipr[AlphaISA::IPR_MCSR]) & 2) && + VA_SPACE_EV5(req->vaddr) == 2) { +#else if (VA_SPACE_EV6(req->vaddr) == 0x7e) { +#endif + // only valid in kernel mode if (ICM_CM(ipr[AlphaISA::IPR_ICM]) != AlphaISA::mode_kernel) { @@ -312,11 +334,13 @@ AlphaITB::translate(MemReqPtr &req) const req->paddr = req->vaddr & PA_IMPL_MASK; +#ifndef ALPHA_TLASER // sign extend the physical address properly if (req->paddr & PA_UNCACHED_BIT_40) req->paddr |= ULL(0xf0000000000); else req->paddr &= ULL(0xffffffffff); +#endif } else { // not a physical address: need to look up pte @@ -486,7 +510,12 @@ AlphaDTB::translate(MemReqPtr &req, bool write) const } // Check for "superpage" mapping +#ifdef ALPHA_TLASER + if ((MCSR_SP(ipr[AlphaISA::IPR_MCSR]) & 2) && + VA_SPACE_EV5(req->vaddr) == 2) { +#else if (VA_SPACE_EV6(req->vaddr) == 0x7e) { +#endif // only valid in kernel mode if (DTB_CM_CM(ipr[AlphaISA::IPR_DTB_CM]) != @@ -498,11 +527,13 @@ AlphaDTB::translate(MemReqPtr &req, bool write) const req->paddr = req->vaddr & PA_IMPL_MASK; +#ifndef ALPHA_TLASER // sign extend the physical address properly if (req->paddr & PA_UNCACHED_BIT_40) req->paddr |= ULL(0xf0000000000); else req->paddr &= ULL(0xffffffffff); +#endif } else { if (write) diff --git a/arch/alpha/ev5.hh b/arch/alpha/ev5.hh index 517e1111f..5b27dd3dc 100644 --- a/arch/alpha/ev5.hh +++ b/arch/alpha/ev5.hh @@ -32,8 +32,15 @@ #define ALT_MODE_AM(X) (((X) >> 3) & 0x3) #define DTB_CM_CM(X) (((X) >> 3) & 0x3) + +#ifdef ALPHA_TLASER +#define DTB_ASN_ASN(X) (((X) >> 57) & 0x7f) +#define DTB_PTE_PPN(X) (((X) >> 32) & 0x07ffffff) +#else #define DTB_ASN_ASN(X) (((X) >> 57) & 0xff) #define DTB_PTE_PPN(X) (((X) >> 32) & 0x07fffffff) +#endif + #define DTB_PTE_XRE(X) (((X) >> 8) & 0xf) #define DTB_PTE_XWE(X) (((X) >> 12) & 0xf) #define DTB_PTE_FONR(X) (((X) >> 1) & 0x1) @@ -41,9 +48,16 @@ #define DTB_PTE_GH(X) (((X) >> 5) & 0x3) #define DTB_PTE_ASMA(X) (((X) >> 4) & 0x1) -#define ICM_CM(X) (((X) >> 3) & 0x3) +#define ICM_CM(X) (((X) >> 3) & 0x3) + +#ifdef ALPHA_TLASER +#define ITB_ASN_ASN(X) (((X) >> 4) & 0x7f) +#define ITB_PTE_PPN(X) (((X) >> 32) & 0x07ffffff) +#else #define ITB_ASN_ASN(X) (((X) >> 4) & 0xff) #define ITB_PTE_PPN(X) (((X) >> 32) & 0x07fffffff) +#endif + #define ITB_PTE_XRE(X) (((X) >> 8) & 0xf) #define ITB_PTE_FONR(X) (((X) >> 1) & 0x1) #define ITB_PTE_FONW(X) (((X) >> 2) & 0x1) @@ -52,18 +66,23 @@ #define VA_UNIMPL_MASK ULL(0xfffff80000000000) #define VA_IMPL_MASK ULL(0x000007ffffffffff) -#define VA_IMPL(X) ((X) & VA_IMPL_MASK) -#define VA_VPN(X) (VA_IMPL(X) >> 13) +#define VA_IMPL(X) ((X) & VA_IMPL_MASK) +#define VA_VPN(X) (VA_IMPL(X) >> 13) #define VA_SPACE_EV5(X) (((X) >> 41) & 0x3) -#define VA_SPACE_EV6(X) (((X) >> 41) & 0x7f) -#define VA_POFS(X) ((X) & 0x1fff) +#define VA_SPACE_EV6(X) (((X) >> 41) & 0x7f) +#define VA_POFS(X) ((X) & 0x1fff) -#define PA_IMPL_MASK ULL(0xfffffffffff) // for Tsunami #define PA_UNCACHED_BIT_39 ULL(0x8000000000) #define PA_UNCACHED_BIT_40 ULL(0x10000000000) #define PA_UNCACHED_BIT_43 ULL(0x80000000000) #define PA_UNCACHED_MASK ULL(0x807ffffffff) // Clear PA<42:35> +#ifdef ALPHA_TLASER +#define PA_IPR_SPACE(X) ((X) >= ULL(0xFFFFF00000)) +#define PA_IMPL_MASK ULL(0xffffffffff) +#else #define PA_IPR_SPACE(X) ((X) >= ULL(0xFFFFFF00000)) +#define PA_IMPL_MASK ULL(0xfffffffffff) // for Tsunami +#endif #define PA_PFN2PA(X) ((X) << 13) diff --git a/arch/alpha/vtophys.cc b/arch/alpha/vtophys.cc index cf2ebbf80..7a38b296b 100644 --- a/arch/alpha/vtophys.cc +++ b/arch/alpha/vtophys.cc @@ -96,20 +96,23 @@ vtophys(ExecContext *xc, Addr vaddr) { Addr ptbr = xc->regs.ipr[AlphaISA::IPR_PALtemp20]; Addr paddr = 0; -// if (PC_PAL(vaddr)) { -// paddr = vaddr & ~ULL(1); -// } else { + //@todo Andrew couldn't remember why he commented some of this code + //so I put it back in. Perhaps something to do with gdb debugging? + if (PC_PAL(vaddr)) { + paddr = vaddr & ~ULL(1); + } else if (!ptbr) { + paddr = vaddr; + } else { if (vaddr >= ALPHA_K0SEG_BASE && vaddr <= ALPHA_K0SEG_END) { paddr = ALPHA_K0SEG_TO_PHYS(vaddr); - } else if (!ptbr) { - paddr = vaddr; } else { Addr pte = kernel_pte_lookup(xc->physmem, ptbr, vaddr); uint64_t entry = xc->physmem->phys_read_qword(pte); if (pte && entry_valid(entry)) paddr = PMAP_PTE_PA(entry) | (vaddr & PGOFSET); } -// } + } + DPRINTF(VtoPhys, "vtophys(%#x) -> %#x\n", vaddr, paddr);