Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756430AbbLDVBM (ORCPT ); Fri, 4 Dec 2015 16:01:12 -0500 Received: from ns.gsystem.sk ([62.176.172.50]:60648 "EHLO gsystem.sk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756319AbbLDVBJ (ORCPT ); Fri, 4 Dec 2015 16:01:09 -0500 From: Ondrej Zary To: Finn Thain , Michael Schmitz , linux-m68k@vger.kernel.org, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 73/71] ncr5380: Use runtime register mapping Date: Fri, 4 Dec 2015 22:00:55 +0100 Message-Id: <1449262855-4538-1-git-send-email-linux@rainbow-software.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <20151118083455.331768508@telegraphics.com.au> References: <20151118083455.331768508@telegraphics.com.au> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 10206 Lines: 290 Convert compile-time C400_ register mapping to runtime mapping. This removes the weird negative register offsets and allows adding additional mappings. Signed-off-by: Ondrej Zary --- drivers/scsi/NCR5380.h | 13 +--------- drivers/scsi/g_NCR5380.c | 61 ++++++++++++++++++++++++++-------------------- drivers/scsi/g_NCR5380.h | 12 ++++++--- 3 files changed, 43 insertions(+), 43 deletions(-) diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h index 36779df..923db6c 100644 --- a/drivers/scsi/NCR5380.h +++ b/drivers/scsi/NCR5380.h @@ -163,8 +163,7 @@ /* Write any value to this register to start an ini mode DMA receive */ #define START_DMA_INITIATOR_RECEIVE_REG 7 /* wo */ -#define C400_CONTROL_STATUS_REG NCR53C400_register_offset-8 /* rw */ - +/* NCR 53C400(A) Control Status Register bits: */ #define CSR_RESET 0x80 /* wo Resets 53c400 */ #define CSR_53C80_REG 0x80 /* ro 5380 registers busy */ #define CSR_TRANS_DIR 0x40 /* rw Data transfer direction */ @@ -181,16 +180,6 @@ #define CSR_BASE CSR_53C80_INTR #endif -/* Number of 128-byte blocks to be transferred */ -#define C400_BLOCK_COUNTER_REG NCR53C400_register_offset-7 /* rw */ - -/* Resume transfer after disconnect */ -#define C400_RESUME_TRANSFER_REG NCR53C400_register_offset-6 /* wo */ - -/* Access to host buffer stack */ -#define C400_HOST_BUFFER NCR53C400_register_offset-4 /* rw */ - - /* Note : PHASE_* macros are based on the values of the STATUS register */ #define PHASE_MASK (SR_MSG | SR_CD | SR_IO) diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c index a9a237f..ce444da 100644 --- a/drivers/scsi/g_NCR5380.c +++ b/drivers/scsi/g_NCR5380.c @@ -253,6 +253,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) }; int flags; struct Scsi_Host *instance; + struct NCR5380_hostdata *hostdata; #ifdef SCSI_G_NCR5380_MEM unsigned long base; void __iomem *iomem; @@ -395,6 +396,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); if (instance == NULL) goto out_release; + hostdata = shost_priv(instance); #ifndef SCSI_G_NCR5380_MEM instance->io_port = overrides[current_override].NCR5380_map_name; @@ -404,18 +406,27 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) * On NCR53C400 boards, NCR5380 registers are mapped 8 past * the base address. */ - if (overrides[current_override].board == BOARD_NCR53C400) + if (overrides[current_override].board == BOARD_NCR53C400) { instance->io_port += 8; + hostdata->c400_ctl_status = 0; + hostdata->c400_blk_cnt = 1; + hostdata->c400_host_buf = 4; + } #else instance->base = overrides[current_override].NCR5380_map_name; - ((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem; + hostdata->iomem = iomem; + if (overrides[current_override].board == BOARD_NCR53C400) { + hostdata->c400_ctl_status = 0x100; + hostdata->c400_blk_cnt = 0x101; + hostdata->c400_host_buf = 0x104; + } #endif if (NCR5380_init(instance, flags)) goto out_unregister; if (overrides[current_override].board == BOARD_NCR53C400) - NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); + NCR5380_write(hostdata->c400_ctl_status, CSR_BASE); NCR5380_maybe_reset_bus(instance); @@ -523,30 +534,28 @@ generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) { -#ifdef SCSI_G_NCR5380_MEM struct NCR5380_hostdata *hostdata = shost_priv(instance); -#endif int blocks = len / 128; int start = 0; int bl; - NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); - NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); + NCR5380_write(hostdata->c400_ctl_status, CSR_BASE | CSR_TRANS_DIR); + NCR5380_write(hostdata->c400_blk_cnt, blocks); while (1) { - if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { + if ((bl = NCR5380_read(hostdata->c400_blk_cnt)) == 0) { break; } - if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { + if (NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ) { printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); return -1; } - while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); + while (NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY); #ifndef SCSI_G_NCR5380_MEM { int i; for (i = 0; i < 128; i++) - dst[start + i] = NCR5380_read(C400_HOST_BUFFER); + dst[start + i] = NCR5380_read(hostdata->c400_host_buf); } #else /* implies SCSI_G_NCR5380_MEM */ @@ -558,7 +567,7 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, } if (blocks) { - while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) + while (NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY) { // FIXME - no timeout } @@ -567,7 +576,7 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, { int i; for (i = 0; i < 128; i++) - dst[start + i] = NCR5380_read(C400_HOST_BUFFER); + dst[start + i] = NCR5380_read(hostdata->c400_host_buf); } #else /* implies SCSI_G_NCR5380_MEM */ @@ -578,7 +587,7 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, blocks--; } - if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) + if (!(NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ)) printk("53C400r: no 53C80 gated irq after transfer"); #if 0 @@ -586,7 +595,7 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, * DON'T DO THIS - THEY NEVER ARRIVE! */ printk("53C400r: Waiting for 53C80 registers\n"); - while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG) + while (NCR5380_read(hostdata->c400_ctl_status) & CSR_53C80_REG) ; #endif if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) @@ -607,31 +616,29 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) { -#ifdef SCSI_G_NCR5380_MEM struct NCR5380_hostdata *hostdata = shost_priv(instance); -#endif int blocks = len / 128; int start = 0; int bl; int i; - NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); - NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); + NCR5380_write(hostdata->c400_ctl_status, CSR_BASE); + NCR5380_write(hostdata->c400_blk_cnt, blocks); while (1) { - if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { + if (NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ) { printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); return -1; } - if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { + if ((bl = NCR5380_read(hostdata->c400_blk_cnt)) == 0) { break; } - while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) + while (NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY) ; // FIXME - timeout #ifndef SCSI_G_NCR5380_MEM { for (i = 0; i < 128; i++) - NCR5380_write(C400_HOST_BUFFER, src[start + i]); + NCR5380_write(hostdata->c400_host_buf, src[start + i]); } #else /* implies SCSI_G_NCR5380_MEM */ @@ -642,13 +649,13 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, blocks--; } if (blocks) { - while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) + while (NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY) ; // FIXME - no timeout #ifndef SCSI_G_NCR5380_MEM { for (i = 0; i < 128; i++) - NCR5380_write(C400_HOST_BUFFER, src[start + i]); + NCR5380_write(hostdata->c400_host_buf, src[start + i]); } #else /* implies SCSI_G_NCR5380_MEM */ @@ -661,7 +668,7 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, #if 0 printk("53C400w: waiting for registers to be available\n"); - THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG); + THEY NEVER DO ! while (NCR5380_read(hostdata->c400_ctl_status) & CSR_53C80_REG); printk("53C400w: Got em\n"); #endif @@ -669,7 +676,7 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, /* All documentation says to check for this. Maybe my hardware is too * fast. Waiting for it seems to work fine! KLL */ - while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) + while (!(i = NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ)) ; // FIXME - no timeout /* diff --git a/drivers/scsi/g_NCR5380.h b/drivers/scsi/g_NCR5380.h index fd201e9..c5e57b7 100644 --- a/drivers/scsi/g_NCR5380.h +++ b/drivers/scsi/g_NCR5380.h @@ -29,7 +29,6 @@ #define NCR5380_map_type int #define NCR5380_map_name port -#define NCR53C400_register_offset 0 #ifdef CONFIG_SCSI_GENERIC_NCR53C400 #define NCR5380_region_size 16 @@ -42,7 +41,10 @@ #define NCR5380_write(reg, value) \ outb(value, instance->io_port + (reg)) -#define NCR5380_implementation_fields /* none */ +#define NCR5380_implementation_fields \ + int c400_ctl_status; \ + int c400_blk_cnt; \ + int c400_host_buf; #else /* therefore SCSI_G_NCR5380_MEM */ @@ -50,7 +52,6 @@ #define NCR5380_map_type unsigned long #define NCR5380_map_name base -#define NCR53C400_register_offset 0x108 #define NCR53C400_mem_base 0x3880 #define NCR53C400_host_buffer 0x3900 #define NCR5380_region_size 0x3a00 @@ -63,7 +64,10 @@ NCR53C400_mem_base + (reg)) #define NCR5380_implementation_fields \ - void __iomem *iomem; + void __iomem *iomem; \ + int c400_ctl_status; \ + int c400_blk_cnt; \ + int c400_host_buf; #endif -- Ondrej Zary -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/