From patchwork Tue Dec 19 22:03:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Ravnborg via B4 Relay X-Patchwork-Id: 757663 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8C0A1405CA; Tue, 19 Dec 2023 22:03:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MBAvXVLe" Received: by smtp.kernel.org (Postfix) with ESMTPS id 6621BC4163D; Tue, 19 Dec 2023 22:03:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1703023396; bh=jpHwPU0gk4FHdyFw3KgXjHoqiB7e+wJP0mRdIuIuUx0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=MBAvXVLekpp934cBCMH0Cys1yiWhQ6CWj65thhlPOr175CXNEr4UTTht5SdpIVUTw Oghn75vgOIf83TgLicfTdxuP4qfeZ/tXwG7Thp7AraDLm8x7fxgEz6Ra+zfHfgmqT3 X6DrvP/UuvtOWS7KKW+WuhKljTaqK0NYo2jDjq6V6Zw+BZ3ThVanJT1H1QggxjvLN7 xe7b6Cd8qTDMOXn8zMSQZ08SghSgl5kHXJwa/M0mUUJCTx4QZ0I9DMn3zeegCH5xKR a6pMstfU9F+Kq42HyQ0i8G/z+fxPlkkw+cFzX1l8ftDqMUaCY9nKwmopB7zpeRxpPO odIYzNkcyb3aQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 53894C46CD2; Tue, 19 Dec 2023 22:03:16 +0000 (UTC) From: Sam Ravnborg via B4 Relay Date: Tue, 19 Dec 2023 23:03:24 +0100 Subject: [PATCH 19/27] sparc32: Drop additional sun4d bits Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20231219-sam-sparc32-sunset-v3-v1-19-64bb44b598c5@ravnborg.org> References: <20231219-sam-sparc32-sunset-v3-v1-0-64bb44b598c5@ravnborg.org> In-Reply-To: <20231219-sam-sparc32-sunset-v3-v1-0-64bb44b598c5@ravnborg.org> To: "David S. Miller" , Arnd Bergmann , Andreas Larsson Cc: Helge Deller , Alexander Viro , Greg Kroah-Hartman , Alan Stern , Jaroslav Kysela , Takashi Iwai , sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-sound@vger.kernel.org, Sam Ravnborg X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=ed25519-sha256; t=1703023392; l=24568; i=sam@ravnborg.org; s=20230107; h=from:subject:message-id; bh=WOwW/xTD5mvfxe2MXV7hahYtctLoaln6PTPy2VeVKFE=; =?utf-8?q?b=3DorF7WX438Tah?= =?utf-8?q?CPFGZqUUThn4ZK2sURruS/n77/D7SMZeftaqlMMCIB8ydi6w6M/mNfVT3PNnr4z0?= yrJuauytDSpY9masJIVU44ZzjvgHg5eggcVSYQ8gTudQs2eBE9O7 X-Developer-Key: i=sam@ravnborg.org; a=ed25519; pk=R0+pqV7BRYOAeOIGkyOrSNke7arx5y3LkEuNi37YEyU= X-Endpoint-Received: by B4 Relay for sam@ravnborg.org/20230107 with auth_id=22 X-Original-From: Sam Ravnborg Reply-To: From: Sam Ravnborg Drop sun4d specific support. Not used by LEON. Signed-off-by: Sam Ravnborg Cc: "David S. Miller" Cc: Arnd Bergmann Cc: Andreas Larsson --- arch/sparc/include/asm/io-unit.h | 59 -------- arch/sparc/include/asm/obio.h | 226 ------------------------------- arch/sparc/include/asm/sbi.h | 116 ---------------- arch/sparc/kernel/entry.S | 1 - arch/sparc/kernel/ioport.c | 1 - arch/sparc/mm/Makefile | 2 +- arch/sparc/mm/io-unit.c | 283 --------------------------------------- arch/sparc/mm/srmmu.c | 1 - 8 files changed, 1 insertion(+), 688 deletions(-) diff --git a/arch/sparc/include/asm/io-unit.h b/arch/sparc/include/asm/io-unit.h deleted file mode 100644 index 8c38f5b9f927..000000000000 --- a/arch/sparc/include/asm/io-unit.h +++ /dev/null @@ -1,59 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* io-unit.h: Definitions for the sun4d IO-UNIT. - * - * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) - */ -#ifndef _SPARC_IO_UNIT_H -#define _SPARC_IO_UNIT_H - -#include -#include -#include - -/* The io-unit handles all virtual to physical address translations - * that occur between the SBUS and physical memory. Access by - * the cpu to IO registers and similar go over the xdbus so are - * translated by the on chip SRMMU. The io-unit and the srmmu do - * not need to have the same translations at all, in fact most - * of the time the translations they handle are a disjunct set. - * Basically the io-unit handles all dvma sbus activity. - */ - -/* AIEEE, unlike the nice sun4m, these monsters have - fixed DMA range 64M */ - -#define IOUNIT_DMA_BASE 0xfc000000 /* TOP - 64M */ -#define IOUNIT_DMA_SIZE 0x04000000 /* 64M */ -/* We use last 1M for sparc_dvma_malloc */ -#define IOUNIT_DVMA_SIZE 0x00100000 /* 1M */ - -/* The format of an iopte in the external page tables */ -#define IOUPTE_PAGE 0xffffff00 /* Physical page number (PA[35:12]) */ -#define IOUPTE_CACHE 0x00000080 /* Cached (in Viking/MXCC) */ -/* XXX Jakub, find out how to program SBUS streaming cache on XDBUS/sun4d. - * XXX Actually, all you should need to do is find out where the registers - * XXX are and copy over the sparc64 implementation I wrote. There may be - * XXX some horrible hwbugs though, so be careful. -DaveM - */ -#define IOUPTE_STREAM 0x00000040 /* Translation can use streaming cache */ -#define IOUPTE_INTRA 0x00000008 /* SBUS direct slot->slot transfer */ -#define IOUPTE_WRITE 0x00000004 /* Writeable */ -#define IOUPTE_VALID 0x00000002 /* IOPTE is valid */ -#define IOUPTE_PARITY 0x00000001 /* Parity is checked during DVMA */ - -struct iounit_struct { - unsigned long bmap[(IOUNIT_DMA_SIZE >> (PAGE_SHIFT + 3)) / sizeof(unsigned long)]; - spinlock_t lock; - iopte_t __iomem *page_table; - unsigned long rotor[3]; - unsigned long limit[4]; -}; - -#define IOUNIT_BMAP1_START 0x00000000 -#define IOUNIT_BMAP1_END (IOUNIT_DMA_SIZE >> (PAGE_SHIFT + 1)) -#define IOUNIT_BMAP2_START IOUNIT_BMAP1_END -#define IOUNIT_BMAP2_END IOUNIT_BMAP2_START + (IOUNIT_DMA_SIZE >> (PAGE_SHIFT + 2)) -#define IOUNIT_BMAPM_START IOUNIT_BMAP2_END -#define IOUNIT_BMAPM_END ((IOUNIT_DMA_SIZE - IOUNIT_DVMA_SIZE) >> PAGE_SHIFT) - -#endif /* !(_SPARC_IO_UNIT_H) */ diff --git a/arch/sparc/include/asm/obio.h b/arch/sparc/include/asm/obio.h deleted file mode 100644 index 1b151f738b00..000000000000 --- a/arch/sparc/include/asm/obio.h +++ /dev/null @@ -1,226 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * obio.h: Some useful locations in 0xFXXXXXXXX PA obio space on sun4d. - * - * Copyright (C) 1997 Jakub Jelinek - */ - -#ifndef _SPARC_OBIO_H -#define _SPARC_OBIO_H - -#include - -/* This weird monster likes to use the very upper parts of - 36bit PA for these things :) */ - -/* CSR space (for each XDBUS) - * ------------------------------------------------------------------------ - * | 0xFE | DEVID | | XDBUS ID | | - * ------------------------------------------------------------------------ - * 35 28 27 20 19 10 9 8 7 0 - */ - -#define CSR_BASE_ADDR 0xe0000000 -#define CSR_CPU_SHIFT (32 - 4 - 5) -#define CSR_XDBUS_SHIFT 8 - -#define CSR_BASE(cpu) (((CSR_BASE_ADDR >> CSR_CPU_SHIFT) + cpu) << CSR_CPU_SHIFT) - -/* ECSR space (not for each XDBUS) - * ------------------------------------------------------------------------ - * | 0xF | DEVID[7:1] | | - * ------------------------------------------------------------------------ - * 35 32 31 25 24 0 - */ - -#define ECSR_BASE_ADDR 0x00000000 -#define ECSR_CPU_SHIFT (32 - 5) -#define ECSR_DEV_SHIFT (32 - 8) - -#define ECSR_BASE(cpu) ((cpu) << ECSR_CPU_SHIFT) -#define ECSR_DEV_BASE(devid) ((devid) << ECSR_DEV_SHIFT) - -/* Bus Watcher */ -#define BW_LOCAL_BASE 0xfff00000 - -#define BW_CID 0x00000000 -#define BW_DBUS_CTRL 0x00000008 -#define BW_DBUS_DATA 0x00000010 -#define BW_CTRL 0x00001000 -#define BW_INTR_TABLE 0x00001040 -#define BW_INTR_TABLE_CLEAR 0x00001080 -#define BW_PRESCALER 0x000010c0 -#define BW_PTIMER_LIMIT 0x00002000 -#define BW_PTIMER_COUNTER2 0x00002004 -#define BW_PTIMER_NDLIMIT 0x00002008 -#define BW_PTIMER_CTRL 0x0000200c -#define BW_PTIMER_COUNTER 0x00002010 -#define BW_TIMER_LIMIT 0x00003000 -#define BW_TIMER_COUNTER2 0x00003004 -#define BW_TIMER_NDLIMIT 0x00003008 -#define BW_TIMER_CTRL 0x0000300c -#define BW_TIMER_COUNTER 0x00003010 - -/* BW Control */ -#define BW_CTRL_USER_TIMER 0x00000004 /* Is User Timer Free run enabled */ - -/* Boot Bus */ -#define BB_LOCAL_BASE 0xf0000000 - -#define BB_STAT1 0x00100000 -#define BB_STAT2 0x00120000 -#define BB_STAT3 0x00140000 -#define BB_LEDS 0x002e0000 - -/* Bits in BB_STAT2 */ -#define BB_STAT2_AC_INTR 0x04 /* Aiee! 5ms and power is gone... */ -#define BB_STAT2_TMP_INTR 0x10 /* My Penguins are burning. Are you able to smell it? */ -#define BB_STAT2_FAN_INTR 0x20 /* My fan refuses to work */ -#define BB_STAT2_PWR_INTR 0x40 /* On SC2000, one of the two ACs died. Ok, we go on... */ -#define BB_STAT2_MASK (BB_STAT2_AC_INTR|BB_STAT2_TMP_INTR|BB_STAT2_FAN_INTR|BB_STAT2_PWR_INTR) - -/* Cache Controller */ -#define CC_BASE 0x1F00000 -#define CC_DATSTREAM 0x1F00000 /* Data stream register */ -#define CC_DATSIZE 0x1F0003F /* Size */ -#define CC_SRCSTREAM 0x1F00100 /* Source stream register */ -#define CC_DESSTREAM 0x1F00200 /* Destination stream register */ -#define CC_RMCOUNT 0x1F00300 /* Count of references and misses */ -#define CC_IPEN 0x1F00406 /* Pending Interrupts */ -#define CC_IMSK 0x1F00506 /* Interrupt Mask */ -#define CC_ICLR 0x1F00606 /* Clear pending Interrupts */ -#define CC_IGEN 0x1F00704 /* Generate Interrupt register */ -#define CC_STEST 0x1F00804 /* Internal self-test */ -#define CC_CREG 0x1F00A04 /* Control register */ -#define CC_SREG 0x1F00B00 /* Status register */ -#define CC_RREG 0x1F00C04 /* Reset register */ -#define CC_EREG 0x1F00E00 /* Error code register */ -#define CC_CID 0x1F00F04 /* Component ID */ - -#ifndef __ASSEMBLY__ - -static inline int bw_get_intr_mask(int sbus_level) -{ - int mask; - - __asm__ __volatile__ ("lduha [%1] %2, %0" : - "=r" (mask) : - "r" (BW_LOCAL_BASE + BW_INTR_TABLE + (sbus_level << 3)), - "i" (ASI_M_CTL)); - return mask; -} - -static inline void bw_clear_intr_mask(int sbus_level, int mask) -{ - __asm__ __volatile__ ("stha %0, [%1] %2" : : - "r" (mask), - "r" (BW_LOCAL_BASE + BW_INTR_TABLE_CLEAR + (sbus_level << 3)), - "i" (ASI_M_CTL)); -} - -static inline unsigned int bw_get_prof_limit(int cpu) -{ - unsigned int limit; - - __asm__ __volatile__ ("lda [%1] %2, %0" : - "=r" (limit) : - "r" (CSR_BASE(cpu) + BW_PTIMER_LIMIT), - "i" (ASI_M_CTL)); - return limit; -} - -static inline void bw_set_prof_limit(int cpu, unsigned int limit) -{ - __asm__ __volatile__ ("sta %0, [%1] %2" : : - "r" (limit), - "r" (CSR_BASE(cpu) + BW_PTIMER_LIMIT), - "i" (ASI_M_CTL)); -} - -static inline unsigned int bw_get_ctrl(int cpu) -{ - unsigned int ctrl; - - __asm__ __volatile__ ("lda [%1] %2, %0" : - "=r" (ctrl) : - "r" (CSR_BASE(cpu) + BW_CTRL), - "i" (ASI_M_CTL)); - return ctrl; -} - -static inline void bw_set_ctrl(int cpu, unsigned int ctrl) -{ - __asm__ __volatile__ ("sta %0, [%1] %2" : : - "r" (ctrl), - "r" (CSR_BASE(cpu) + BW_CTRL), - "i" (ASI_M_CTL)); -} - -static inline unsigned int cc_get_ipen(void) -{ - unsigned int pending; - - __asm__ __volatile__ ("lduha [%1] %2, %0" : - "=r" (pending) : - "r" (CC_IPEN), - "i" (ASI_M_MXCC)); - return pending; -} - -static inline void cc_set_iclr(unsigned int clear) -{ - __asm__ __volatile__ ("stha %0, [%1] %2" : : - "r" (clear), - "r" (CC_ICLR), - "i" (ASI_M_MXCC)); -} - -static inline unsigned int cc_get_imsk(void) -{ - unsigned int mask; - - __asm__ __volatile__ ("lduha [%1] %2, %0" : - "=r" (mask) : - "r" (CC_IMSK), - "i" (ASI_M_MXCC)); - return mask; -} - -static inline void cc_set_imsk(unsigned int mask) -{ - __asm__ __volatile__ ("stha %0, [%1] %2" : : - "r" (mask), - "r" (CC_IMSK), - "i" (ASI_M_MXCC)); -} - -static inline unsigned int cc_get_imsk_other(int cpuid) -{ - unsigned int mask; - - __asm__ __volatile__ ("lduha [%1] %2, %0" : - "=r" (mask) : - "r" (ECSR_BASE(cpuid) | CC_IMSK), - "i" (ASI_M_CTL)); - return mask; -} - -static inline void cc_set_imsk_other(int cpuid, unsigned int mask) -{ - __asm__ __volatile__ ("stha %0, [%1] %2" : : - "r" (mask), - "r" (ECSR_BASE(cpuid) | CC_IMSK), - "i" (ASI_M_CTL)); -} - -static inline void cc_set_igen(unsigned int gen) -{ - __asm__ __volatile__ ("sta %0, [%1] %2" : : - "r" (gen), - "r" (CC_IGEN), - "i" (ASI_M_MXCC)); -} - -#endif /* !__ASSEMBLY__ */ - -#endif /* !(_SPARC_OBIO_H) */ diff --git a/arch/sparc/include/asm/sbi.h b/arch/sparc/include/asm/sbi.h deleted file mode 100644 index 4d6026c1e446..000000000000 --- a/arch/sparc/include/asm/sbi.h +++ /dev/null @@ -1,116 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * sbi.h: SBI (Sbus Interface on sun4d) definitions - * - * Copyright (C) 1997 Jakub Jelinek - */ - -#ifndef _SPARC_SBI_H -#define _SPARC_SBI_H - -#include - -/* SBI */ -struct sbi_regs { -/* 0x0000 */ u32 cid; /* Component ID */ -/* 0x0004 */ u32 ctl; /* Control */ -/* 0x0008 */ u32 status; /* Status */ - u32 _unused1; - -/* 0x0010 */ u32 cfg0; /* Slot0 config reg */ -/* 0x0014 */ u32 cfg1; /* Slot1 config reg */ -/* 0x0018 */ u32 cfg2; /* Slot2 config reg */ -/* 0x001c */ u32 cfg3; /* Slot3 config reg */ - -/* 0x0020 */ u32 stb0; /* Streaming buf control for slot 0 */ -/* 0x0024 */ u32 stb1; /* Streaming buf control for slot 1 */ -/* 0x0028 */ u32 stb2; /* Streaming buf control for slot 2 */ -/* 0x002c */ u32 stb3; /* Streaming buf control for slot 3 */ - -/* 0x0030 */ u32 intr_state; /* Interrupt state */ -/* 0x0034 */ u32 intr_tid; /* Interrupt target ID */ -/* 0x0038 */ u32 intr_diag; /* Interrupt diagnostics */ -}; - -#define SBI_CID 0x02800000 -#define SBI_CTL 0x02800004 -#define SBI_STATUS 0x02800008 -#define SBI_CFG0 0x02800010 -#define SBI_CFG1 0x02800014 -#define SBI_CFG2 0x02800018 -#define SBI_CFG3 0x0280001c -#define SBI_STB0 0x02800020 -#define SBI_STB1 0x02800024 -#define SBI_STB2 0x02800028 -#define SBI_STB3 0x0280002c -#define SBI_INTR_STATE 0x02800030 -#define SBI_INTR_TID 0x02800034 -#define SBI_INTR_DIAG 0x02800038 - -/* Burst bits for 8, 16, 32, 64 are in cfgX registers at bits 2, 3, 4, 5 respectively */ -#define SBI_CFG_BURST_MASK 0x0000001e - -/* How to make devid from sbi no */ -#define SBI2DEVID(sbino) ((sbino<<4)|2) - -/* intr_state has 4 bits for slots 0 .. 3 and these bits are repeated for each sbus irq level - * - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * SBUS IRQ LEVEL | 7 | 6 | 5 | 4 | 3 | 2 | 1 | | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Reser | - * SLOT # |3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0| ved | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-------+ - * Bits 31 27 23 19 15 11 7 3 0 - */ - - -#ifndef __ASSEMBLY__ - -static inline int acquire_sbi(int devid, int mask) -{ - __asm__ __volatile__ ("swapa [%2] %3, %0" : - "=r" (mask) : - "0" (mask), - "r" (ECSR_DEV_BASE(devid) | SBI_INTR_STATE), - "i" (ASI_M_CTL)); - return mask; -} - -static inline void release_sbi(int devid, int mask) -{ - __asm__ __volatile__ ("sta %0, [%1] %2" : : - "r" (mask), - "r" (ECSR_DEV_BASE(devid) | SBI_INTR_STATE), - "i" (ASI_M_CTL)); -} - -static inline void set_sbi_tid(int devid, int targetid) -{ - __asm__ __volatile__ ("sta %0, [%1] %2" : : - "r" (targetid), - "r" (ECSR_DEV_BASE(devid) | SBI_INTR_TID), - "i" (ASI_M_CTL)); -} - -static inline int get_sbi_ctl(int devid, int cfgno) -{ - int cfg; - - __asm__ __volatile__ ("lda [%1] %2, %0" : - "=r" (cfg) : - "r" ((ECSR_DEV_BASE(devid) | SBI_CFG0) + (cfgno<<2)), - "i" (ASI_M_CTL)); - return cfg; -} - -static inline void set_sbi_ctl(int devid, int cfgno, int cfg) -{ - __asm__ __volatile__ ("sta %0, [%1] %2" : : - "r" (cfg), - "r" ((ECSR_DEV_BASE(devid) | SBI_CFG0) + (cfgno<<2)), - "i" (ASI_M_CTL)); -} - -#endif /* !__ASSEMBLY__ */ - -#endif /* !(_SPARC_SBI_H) */ diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index 078a8f7f8383..eecbe0be7bf6 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -24,7 +24,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index cf0ace29704a..745579a40785 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -49,7 +49,6 @@ #include #include #include -#include #include static void __iomem *_sparc_ioremap(struct resource *res, u32 bus, u32 pa, int sz); diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile index 357a5816a6bf..ee33053b170a 100644 --- a/arch/sparc/mm/Makefile +++ b/arch/sparc/mm/Makefile @@ -8,7 +8,7 @@ ccflags-y := -Werror obj-$(CONFIG_SPARC64) += ultra.o tlb.o tsb.o obj-y += fault_$(BITS).o obj-y += init_$(BITS).o -obj-$(CONFIG_SPARC32) += srmmu.o iommu.o io-unit.o +obj-$(CONFIG_SPARC32) += srmmu.o iommu.o obj-$(CONFIG_SPARC32) += leon_mm.o # Only used by sparc64 diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c deleted file mode 100644 index a2cfa8757795..000000000000 --- a/arch/sparc/mm/io-unit.c +++ /dev/null @@ -1,283 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * io-unit.c: IO-UNIT specific routines for memory management. - * - * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -#include "mm_32.h" - -/* #define IOUNIT_DEBUG */ -#ifdef IOUNIT_DEBUG -#define IOD(x) printk(x) -#else -#define IOD(x) do { } while (0) -#endif - -#define IOPERM (IOUPTE_CACHE | IOUPTE_WRITE | IOUPTE_VALID) -#define MKIOPTE(phys) __iopte((((phys)>>4) & IOUPTE_PAGE) | IOPERM) - -static const struct dma_map_ops iounit_dma_ops; - -static void __init iounit_iommu_init(struct platform_device *op) -{ - struct iounit_struct *iounit; - iopte_t __iomem *xpt; - iopte_t __iomem *xptend; - - iounit = kzalloc(sizeof(struct iounit_struct), GFP_ATOMIC); - if (!iounit) { - prom_printf("SUN4D: Cannot alloc iounit, halting.\n"); - prom_halt(); - } - - iounit->limit[0] = IOUNIT_BMAP1_START; - iounit->limit[1] = IOUNIT_BMAP2_START; - iounit->limit[2] = IOUNIT_BMAPM_START; - iounit->limit[3] = IOUNIT_BMAPM_END; - iounit->rotor[1] = IOUNIT_BMAP2_START; - iounit->rotor[2] = IOUNIT_BMAPM_START; - - xpt = of_ioremap(&op->resource[2], 0, PAGE_SIZE * 16, "XPT"); - if (!xpt) { - prom_printf("SUN4D: Cannot map External Page Table."); - prom_halt(); - } - - op->dev.archdata.iommu = iounit; - iounit->page_table = xpt; - spin_lock_init(&iounit->lock); - - xptend = iounit->page_table + (16 * PAGE_SIZE) / sizeof(iopte_t); - for (; xpt < xptend; xpt++) - sbus_writel(0, xpt); - - op->dev.dma_ops = &iounit_dma_ops; -} - -static int __init iounit_init(void) -{ - extern void sun4d_init_sbi_irq(void); - struct device_node *dp; - - for_each_node_by_name(dp, "sbi") { - struct platform_device *op = of_find_device_by_node(dp); - - iounit_iommu_init(op); - of_propagate_archdata(op); - } - - return 0; -} - -subsys_initcall(iounit_init); - -/* One has to hold iounit->lock to call this */ -static unsigned long iounit_get_area(struct iounit_struct *iounit, unsigned long vaddr, int size) -{ - int i, j, k, npages; - unsigned long rotor, scan, limit; - iopte_t iopte; - - npages = ((vaddr & ~PAGE_MASK) + size + (PAGE_SIZE-1)) >> PAGE_SHIFT; - - /* A tiny bit of magic ingredience :) */ - switch (npages) { - case 1: i = 0x0231; break; - case 2: i = 0x0132; break; - default: i = 0x0213; break; - } - - IOD(("iounit_get_area(%08lx,%d[%d])=", vaddr, size, npages)); - -next: j = (i & 15); - rotor = iounit->rotor[j - 1]; - limit = iounit->limit[j]; - scan = rotor; -nexti: scan = find_next_zero_bit(iounit->bmap, limit, scan); - if (scan + npages > limit) { - if (limit != rotor) { - limit = rotor; - scan = iounit->limit[j - 1]; - goto nexti; - } - i >>= 4; - if (!(i & 15)) - panic("iounit_get_area: Couldn't find free iopte slots for (%08lx,%d)\n", vaddr, size); - goto next; - } - for (k = 1, scan++; k < npages; k++) - if (test_bit(scan++, iounit->bmap)) - goto nexti; - iounit->rotor[j - 1] = (scan < limit) ? scan : iounit->limit[j - 1]; - scan -= npages; - iopte = MKIOPTE(__pa(vaddr & PAGE_MASK)); - vaddr = IOUNIT_DMA_BASE + (scan << PAGE_SHIFT) + (vaddr & ~PAGE_MASK); - for (k = 0; k < npages; k++, iopte = __iopte(iopte_val(iopte) + 0x100), scan++) { - set_bit(scan, iounit->bmap); - sbus_writel(iopte_val(iopte), &iounit->page_table[scan]); - } - IOD(("%08lx\n", vaddr)); - return vaddr; -} - -static dma_addr_t iounit_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t len, enum dma_data_direction dir, - unsigned long attrs) -{ - void *vaddr = page_address(page) + offset; - struct iounit_struct *iounit = dev->archdata.iommu; - unsigned long ret, flags; - - /* XXX So what is maxphys for us and how do drivers know it? */ - if (!len || len > 256 * 1024) - return DMA_MAPPING_ERROR; - - spin_lock_irqsave(&iounit->lock, flags); - ret = iounit_get_area(iounit, (unsigned long)vaddr, len); - spin_unlock_irqrestore(&iounit->lock, flags); - return ret; -} - -static int iounit_map_sg(struct device *dev, struct scatterlist *sgl, int nents, - enum dma_data_direction dir, unsigned long attrs) -{ - struct iounit_struct *iounit = dev->archdata.iommu; - struct scatterlist *sg; - unsigned long flags; - int i; - - /* FIXME: Cache some resolved pages - often several sg entries are to the same page */ - spin_lock_irqsave(&iounit->lock, flags); - for_each_sg(sgl, sg, nents, i) { - sg->dma_address = iounit_get_area(iounit, (unsigned long) sg_virt(sg), sg->length); - sg->dma_length = sg->length; - } - spin_unlock_irqrestore(&iounit->lock, flags); - return nents; -} - -static void iounit_unmap_page(struct device *dev, dma_addr_t vaddr, size_t len, - enum dma_data_direction dir, unsigned long attrs) -{ - struct iounit_struct *iounit = dev->archdata.iommu; - unsigned long flags; - - spin_lock_irqsave(&iounit->lock, flags); - len = ((vaddr & ~PAGE_MASK) + len + (PAGE_SIZE-1)) >> PAGE_SHIFT; - vaddr = (vaddr - IOUNIT_DMA_BASE) >> PAGE_SHIFT; - IOD(("iounit_release %08lx-%08lx\n", (long)vaddr, (long)len+vaddr)); - for (len += vaddr; vaddr < len; vaddr++) - clear_bit(vaddr, iounit->bmap); - spin_unlock_irqrestore(&iounit->lock, flags); -} - -static void iounit_unmap_sg(struct device *dev, struct scatterlist *sgl, - int nents, enum dma_data_direction dir, unsigned long attrs) -{ - struct iounit_struct *iounit = dev->archdata.iommu; - unsigned long flags, vaddr, len; - struct scatterlist *sg; - int i; - - spin_lock_irqsave(&iounit->lock, flags); - for_each_sg(sgl, sg, nents, i) { - len = ((sg->dma_address & ~PAGE_MASK) + sg->length + (PAGE_SIZE-1)) >> PAGE_SHIFT; - vaddr = (sg->dma_address - IOUNIT_DMA_BASE) >> PAGE_SHIFT; - IOD(("iounit_release %08lx-%08lx\n", (long)vaddr, (long)len+vaddr)); - for (len += vaddr; vaddr < len; vaddr++) - clear_bit(vaddr, iounit->bmap); - } - spin_unlock_irqrestore(&iounit->lock, flags); -} - -#ifdef CONFIG_SBUS -static void *iounit_alloc(struct device *dev, size_t len, - dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) -{ - struct iounit_struct *iounit = dev->archdata.iommu; - unsigned long va, addr, page, end, ret; - pgprot_t dvma_prot; - iopte_t __iomem *iopte; - - /* XXX So what is maxphys for us and how do drivers know it? */ - if (!len || len > 256 * 1024) - return NULL; - - len = PAGE_ALIGN(len); - va = __get_free_pages(gfp | __GFP_ZERO, get_order(len)); - if (!va) - return NULL; - - addr = ret = sparc_dma_alloc_resource(dev, len); - if (!addr) - goto out_free_pages; - *dma_handle = addr; - - dvma_prot = __pgprot(SRMMU_CACHE | SRMMU_ET_PTE | SRMMU_PRIV); - end = PAGE_ALIGN((addr + len)); - while(addr < end) { - page = va; - { - pmd_t *pmdp; - pte_t *ptep; - long i; - - pmdp = pmd_off_k(addr); - ptep = pte_offset_kernel(pmdp, addr); - - set_pte(ptep, mk_pte(virt_to_page(page), dvma_prot)); - - i = ((addr - IOUNIT_DMA_BASE) >> PAGE_SHIFT); - - iopte = iounit->page_table + i; - sbus_writel(iopte_val(MKIOPTE(__pa(page))), iopte); - } - addr += PAGE_SIZE; - va += PAGE_SIZE; - } - flush_cache_all(); - flush_tlb_all(); - - return (void *)ret; - -out_free_pages: - free_pages(va, get_order(len)); - return NULL; -} - -static void iounit_free(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t dma_addr, unsigned long attrs) -{ - /* XXX Somebody please fill this in */ -} -#endif - -static const struct dma_map_ops iounit_dma_ops = { -#ifdef CONFIG_SBUS - .alloc = iounit_alloc, - .free = iounit_free, -#endif - .map_page = iounit_map_page, - .unmap_page = iounit_unmap_page, - .map_sg = iounit_map_sg, - .unmap_sg = iounit_unmap_sg, -}; diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c index 4a3778549c6f..949247a6896b 100644 --- a/arch/sparc/mm/srmmu.c +++ b/arch/sparc/mm/srmmu.c @@ -26,7 +26,6 @@ #include #include #include -#include #include #include #include