From patchwork Mon Aug 9 16:22:17 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Dong, Chuanxiao" X-Patchwork-Id: 61290 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from bombadil.infradead.org (bombadil.infradead.org [18.85.46.34]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id BE0C9B6EF2 for ; Tue, 10 Aug 2010 02:26:13 +1000 (EST) Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.72 #1 (Red Hat Linux)) id 1OiV9X-0001DG-9q; Mon, 09 Aug 2010 16:24:43 +0000 Received: from mga02.intel.com ([134.134.136.20]) by bombadil.infradead.org with esmtp (Exim 4.72 #1 (Red Hat Linux)) id 1OiV9T-0001CV-Of for linux-mtd@lists.infradead.org; Mon, 09 Aug 2010 16:24:41 +0000 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP; 09 Aug 2010 09:21:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.55,344,1278313200"; d="scan'208,223";a="645902321" Received: from unknown (HELO intel.com) ([172.16.120.164]) by orsmga001.jf.intel.com with ESMTP; 09 Aug 2010 09:24:26 -0700 Date: Tue, 10 Aug 2010 00:22:17 +0800 From: "Chuanxiao.Dong" To: linux-mtd@lists.infradead.org, dwmw2@infradead.org Subject: [PATCH v1 2/4]nand/denali: use iowrite32() to replace denali_write32() Message-ID: <20100809162217.GB10968@intel.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.19 (2009-01-05) X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20100809_122440_166586_06D44078 X-CRM114-Status: GOOD ( 19.31 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.3.1 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [134.134.136.20 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-mtd-bounces@lists.infradead.org Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From 4104cf1a8f6c2fa0bd4a82eeedb4f0a6d3b277ef Mon Sep 17 00:00:00 2001 From: Chuanxiao Dong Date: Mon, 9 Aug 2010 23:59:23 +0800 Subject: [PATCH 2/4] nand/denali: use iowrite32() to replace denali_write32() denali_write32() just implements a debug function for iowrite32(), only print out the write value. Remove this function since it's useless Signed-off-by: Chuanxiao Dong --- drivers/mtd/nand/denali.c | 138 ++++++++++++++++++++------------------------- 1 files changed, 62 insertions(+), 76 deletions(-) diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index b8b7b93..b255b41 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -132,20 +132,6 @@ static uint32_t read_interrupt_status(struct denali_nand_info *denali); #define DEBUG_DENALI 0 -/* This is a wrapper for writing to the denali registers. - * this allows us to create debug information so we can - * observe how the driver is programming the device. - * it uses standard linux convention for (val, addr) */ -static void denali_write32(uint32_t value, void *addr) -{ - iowrite32(value, addr); - -#if DEBUG_DENALI - printk(KERN_INFO "wrote: 0x%x -> 0x%x\n", value, - (uint32_t)((uint32_t)addr & 0x1fff)); -#endif -} - /* Certain operations for the denali NAND controller use * an indexed mode to read/write data. The operation is * performed by writing the address value of the command @@ -155,15 +141,15 @@ static void denali_write32(uint32_t value, void *addr) static void index_addr(struct denali_nand_info *denali, uint32_t address, uint32_t data) { - denali_write32(address, denali->flash_mem); - denali_write32(data, denali->flash_mem + 0x10); + iowrite32(address, denali->flash_mem); + iowrite32(data, denali->flash_mem + 0x10); } /* Perform an indexed read of the device */ static void index_addr_read_data(struct denali_nand_info *denali, uint32_t address, uint32_t *pdata) { - denali_write32(address, denali->flash_mem); + iowrite32(address, denali->flash_mem); *pdata = ioread32(denali->flash_mem + 0x10); } @@ -191,7 +177,7 @@ static void read_status(struct denali_nand_info *denali) /* initiate a device status read */ cmd = MODE_11 | BANK(denali->flash_bank); index_addr(denali, cmd | COMMAND_CYCLE, 0x70); - denali_write32(cmd | STATUS_CYCLE, denali->flash_mem); + iowrite32(cmd | STATUS_CYCLE, denali->flash_mem); /* update buffer with status value */ write_byte_to_buf(denali, ioread32(denali->flash_mem + 0x10)); @@ -213,7 +199,7 @@ static void reset_bank(struct denali_nand_info *denali) clear_interrupts(denali); bank = device_reset_banks[denali->flash_bank]; - denali_write32(bank, denali->flash_reg + DEVICE_RESET); + iowrite32(bank, denali->flash_reg + DEVICE_RESET); irq_status = wait_for_irq(denali, irq_mask); @@ -230,11 +216,11 @@ static uint16_t denali_nand_reset(struct denali_nand_info *denali) __FILE__, __LINE__, __func__); for (i = 0 ; i < LLD_MAX_FLASH_BANKS; i++) - denali_write32(reset_complete[i] | operation_timeout[i], + iowrite32(reset_complete[i] | operation_timeout[i], denali->flash_reg + intr_status_addresses[i]); for (i = 0 ; i < LLD_MAX_FLASH_BANKS; i++) { - denali_write32(device_reset_banks[i], + iowrite32(device_reset_banks[i], denali->flash_reg + DEVICE_RESET); while (!(ioread32(denali->flash_reg + intr_status_addresses[i]) & @@ -247,7 +233,7 @@ static uint16_t denali_nand_reset(struct denali_nand_info *denali) } for (i = 0; i < LLD_MAX_FLASH_BANKS; i++) - denali_write32(reset_complete[i] | operation_timeout[i], + iowrite32(reset_complete[i] | operation_timeout[i], denali->flash_reg + intr_status_addresses[i]); return PASS; @@ -345,14 +331,14 @@ static void nand_onfi_timing_set(struct denali_nand_info *denali, (ioread32(denali->flash_reg + DEVICE_ID) == 0x88)) acc_clks = 6; - denali_write32(acc_clks, denali->flash_reg + ACC_CLKS); - denali_write32(re_2_we, denali->flash_reg + RE_2_WE); - denali_write32(re_2_re, denali->flash_reg + RE_2_RE); - denali_write32(we_2_re, denali->flash_reg + WE_2_RE); - denali_write32(addr_2_data, denali->flash_reg + ADDR_2_DATA); - denali_write32(en_lo, denali->flash_reg + RDWR_EN_LO_CNT); - denali_write32(en_hi, denali->flash_reg + RDWR_EN_HI_CNT); - denali_write32(cs_cnt, denali->flash_reg + CS_SETUP_CNT); + iowrite32(acc_clks, denali->flash_reg + ACC_CLKS); + iowrite32(re_2_we, denali->flash_reg + RE_2_WE); + iowrite32(re_2_re, denali->flash_reg + RE_2_RE); + iowrite32(we_2_re, denali->flash_reg + WE_2_RE); + iowrite32(addr_2_data, denali->flash_reg + ADDR_2_DATA); + iowrite32(en_lo, denali->flash_reg + RDWR_EN_LO_CNT); + iowrite32(en_hi, denali->flash_reg + RDWR_EN_HI_CNT); + iowrite32(cs_cnt, denali->flash_reg + CS_SETUP_CNT); } /* queries the NAND device to see what ONFI modes it supports. */ @@ -387,13 +373,13 @@ static void get_samsung_nand_para(struct denali_nand_info *denali, { if (device_id == 0xd3) { /* Samsung K9WAG08U1A */ /* Set timing register values according to datasheet */ - denali_write32(5, denali->flash_reg + ACC_CLKS); - denali_write32(20, denali->flash_reg + RE_2_WE); - denali_write32(12, denali->flash_reg + WE_2_RE); - denali_write32(14, denali->flash_reg + ADDR_2_DATA); - denali_write32(3, denali->flash_reg + RDWR_EN_LO_CNT); - denali_write32(2, denali->flash_reg + RDWR_EN_HI_CNT); - denali_write32(2, denali->flash_reg + CS_SETUP_CNT); + iowrite32(5, denali->flash_reg + ACC_CLKS); + iowrite32(20, denali->flash_reg + RE_2_WE); + iowrite32(12, denali->flash_reg + WE_2_RE); + iowrite32(14, denali->flash_reg + ADDR_2_DATA); + iowrite32(3, denali->flash_reg + RDWR_EN_LO_CNT); + iowrite32(2, denali->flash_reg + RDWR_EN_HI_CNT); + iowrite32(2, denali->flash_reg + CS_SETUP_CNT); } } @@ -405,15 +391,15 @@ static void get_toshiba_nand_para(struct denali_nand_info *denali) /* spare area size for some kind of Toshiba NAND device */ if ((ioread32(denali->flash_reg + DEVICE_MAIN_AREA_SIZE) == 4096) && (ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE) == 64)) { - denali_write32(216, denali->flash_reg + DEVICE_SPARE_AREA_SIZE); + iowrite32(216, denali->flash_reg + DEVICE_SPARE_AREA_SIZE); tmp = ioread32(denali->flash_reg + DEVICES_CONNECTED) * ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE); - denali_write32(tmp, + iowrite32(tmp, denali->flash_reg + LOGICAL_PAGE_SPARE_SIZE); #if SUPPORT_15BITECC - denali_write32(15, denali->flash_reg + ECC_CORRECTION); + iowrite32(15, denali->flash_reg + ECC_CORRECTION); #elif SUPPORT_8BITECC - denali_write32(8, denali->flash_reg + ECC_CORRECTION); + iowrite32(8, denali->flash_reg + ECC_CORRECTION); #endif } } @@ -426,22 +412,22 @@ static void get_hynix_nand_para(struct denali_nand_info *denali, switch (device_id) { case 0xD5: /* Hynix H27UAG8T2A, H27UBG8U5A or H27UCG8VFA */ case 0xD7: /* Hynix H27UDG8VEM, H27UCG8UDM or H27UCG8V5A */ - denali_write32(128, denali->flash_reg + PAGES_PER_BLOCK); - denali_write32(4096, denali->flash_reg + DEVICE_MAIN_AREA_SIZE); - denali_write32(224, denali->flash_reg + DEVICE_SPARE_AREA_SIZE); + iowrite32(128, denali->flash_reg + PAGES_PER_BLOCK); + iowrite32(4096, denali->flash_reg + DEVICE_MAIN_AREA_SIZE); + iowrite32(224, denali->flash_reg + DEVICE_SPARE_AREA_SIZE); main_size = 4096 * ioread32(denali->flash_reg + DEVICES_CONNECTED); spare_size = 224 * ioread32(denali->flash_reg + DEVICES_CONNECTED); - denali_write32(main_size, + iowrite32(main_size, denali->flash_reg + LOGICAL_PAGE_DATA_SIZE); - denali_write32(spare_size, + iowrite32(spare_size, denali->flash_reg + LOGICAL_PAGE_SPARE_SIZE); - denali_write32(0, denali->flash_reg + DEVICE_WIDTH); + iowrite32(0, denali->flash_reg + DEVICE_WIDTH); #if SUPPORT_15BITECC - denali_write32(15, denali->flash_reg + ECC_CORRECTION); + iowrite32(15, denali->flash_reg + ECC_CORRECTION); #elif SUPPORT_8BITECC - denali_write32(8, denali->flash_reg + ECC_CORRECTION); + iowrite32(8, denali->flash_reg + ECC_CORRECTION); #endif break; default: @@ -586,9 +572,9 @@ static void denali_set_intr_modes(struct denali_nand_info *denali, __FILE__, __LINE__, __func__); if (INT_ENABLE) - denali_write32(1, denali->flash_reg + GLOBAL_INT_ENABLE); + iowrite32(1, denali->flash_reg + GLOBAL_INT_ENABLE); else - denali_write32(0, denali->flash_reg + GLOBAL_INT_ENABLE); + iowrite32(0, denali->flash_reg + GLOBAL_INT_ENABLE); } /* validation function to verify that the controlling software is making @@ -609,10 +595,10 @@ static void denali_irq_init(struct denali_nand_info *denali) int_mask = DENALI_IRQ_ALL; /* Clear all status bits */ - denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS0); - denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS1); - denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS2); - denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS3); + iowrite32(0xFFFF, denali->flash_reg + INTR_STATUS0); + iowrite32(0xFFFF, denali->flash_reg + INTR_STATUS1); + iowrite32(0xFFFF, denali->flash_reg + INTR_STATUS2); + iowrite32(0xFFFF, denali->flash_reg + INTR_STATUS3); denali_irq_enable(denali, int_mask); } @@ -626,10 +612,10 @@ static void denali_irq_cleanup(int irqnum, struct denali_nand_info *denali) static void denali_irq_enable(struct denali_nand_info *denali, uint32_t int_mask) { - denali_write32(int_mask, denali->flash_reg + INTR_EN0); - denali_write32(int_mask, denali->flash_reg + INTR_EN1); - denali_write32(int_mask, denali->flash_reg + INTR_EN2); - denali_write32(int_mask, denali->flash_reg + INTR_EN3); + iowrite32(int_mask, denali->flash_reg + INTR_EN0); + iowrite32(int_mask, denali->flash_reg + INTR_EN1); + iowrite32(int_mask, denali->flash_reg + INTR_EN2); + iowrite32(int_mask, denali->flash_reg + INTR_EN3); } /* This function only returns when an interrupt that this driver cares about @@ -648,7 +634,7 @@ static inline void clear_interrupt(struct denali_nand_info *denali, intr_status_reg = intr_status_addresses[denali->flash_bank]; - denali_write32(irq_mask, denali->flash_reg + intr_status_reg); + iowrite32(irq_mask, denali->flash_reg + intr_status_reg); } static void clear_interrupts(struct denali_nand_info *denali) @@ -800,8 +786,8 @@ static void setup_ecc_for_xfer(struct denali_nand_info *denali, bool ecc_en, transfer_spare_flag = transfer_spare ? TRANSFER_SPARE_REG__FLAG : 0; /* Enable spare area/ECC per user's request. */ - denali_write32(ecc_en_flag, denali->flash_reg + ECC_ENABLE); - denali_write32(transfer_spare_flag, + iowrite32(ecc_en_flag, denali->flash_reg + ECC_ENABLE); + iowrite32(transfer_spare_flag, denali->flash_reg + TRANSFER_SPARE_REG); } @@ -844,14 +830,14 @@ static int denali_send_pipeline_cmd(struct denali_nand_info *denali, if (op == DENALI_WRITE && access_type != SPARE_ACCESS) { cmd = MODE_01 | addr; - denali_write32(cmd, denali->flash_mem); + iowrite32(cmd, denali->flash_mem); } else if (op == DENALI_WRITE && access_type == SPARE_ACCESS) { /* read spare area */ cmd = MODE_10 | addr; index_addr(denali, (uint32_t)cmd, access_type); cmd = MODE_01 | addr; - denali_write32(cmd, denali->flash_mem); + iowrite32(cmd, denali->flash_mem); } else if (op == DENALI_READ) { /* setup page read request for access type */ cmd = MODE_10 | addr; @@ -863,7 +849,7 @@ static int denali_send_pipeline_cmd(struct denali_nand_info *denali, */ if (access_type == SPARE_ACCESS) { cmd = MODE_01 | addr; - denali_write32(cmd, denali->flash_mem); + iowrite32(cmd, denali->flash_mem); } else { index_addr(denali, (uint32_t)cmd, 0x2000 | op | page_count); @@ -881,7 +867,7 @@ static int denali_send_pipeline_cmd(struct denali_nand_info *denali, status = FAIL; } else { cmd = MODE_01 | addr; - denali_write32(cmd, denali->flash_mem); + iowrite32(cmd, denali->flash_mem); } } } @@ -902,7 +888,7 @@ static int write_data_to_flash_mem(struct denali_nand_info *denali, /* write the data to the flash memory */ buf32 = (uint32_t *)buf; for (i = 0; i < len / 4; i++) - denali_write32(*buf32++, denali->flash_mem + 0x10); + iowrite32(*buf32++, denali->flash_mem + 0x10); return i*4; /* intent is to return the number of bytes read */ } @@ -1100,7 +1086,7 @@ static void denali_enable_dma(struct denali_nand_info *denali, bool en) if (en) reg_val = DMA_ENABLE__FLAG; - denali_write32(reg_val, denali->flash_reg + DMA_ENABLE); + iowrite32(reg_val, denali->flash_reg + DMA_ENABLE); ioread32(denali->flash_reg + DMA_ENABLE); } @@ -1447,16 +1433,16 @@ static void denali_hw_init(struct denali_nand_info *denali) SPARE_AREA_SKIP_BYTES); denali_irq_init(denali); denali_nand_reset(denali); - denali_write32(0x0F, denali->flash_reg + RB_PIN_ENABLED); - denali_write32(CHIP_EN_DONT_CARE__FLAG, + iowrite32(0x0F, denali->flash_reg + RB_PIN_ENABLED); + iowrite32(CHIP_EN_DONT_CARE__FLAG, denali->flash_reg + CHIP_ENABLE_DONT_CARE); - denali_write32(0x0, denali->flash_reg + SPARE_AREA_SKIP_BYTES); - denali_write32(0xffff, denali->flash_reg + SPARE_AREA_MARKER); + iowrite32(0x0, denali->flash_reg + SPARE_AREA_SKIP_BYTES); + iowrite32(0xffff, denali->flash_reg + SPARE_AREA_MARKER); /* Should set value for these registers when init */ - denali_write32(0, denali->flash_reg + TWO_ROW_ADDR_CYCLES); - denali_write32(1, denali->flash_reg + ECC_ENABLE); + iowrite32(0, denali->flash_reg + TWO_ROW_ADDR_CYCLES); + iowrite32(1, denali->flash_reg + ECC_ENABLE); } /* Althogh controller spec said SLC ECC is forceb to be 4bit, @@ -1718,7 +1704,7 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) /* if MLC OOB size is large enough, use 15bit ECC*/ denali->nand.ecc.layout = &nand_15bit_oob; denali->nand.ecc.bytes = ECC_15BITS; - denali_write32(15, denali->flash_reg + ECC_CORRECTION); + iowrite32(15, denali->flash_reg + ECC_CORRECTION); } else if (denali->mtd.oobsize < (denali->bbtskipbytes + ECC_8BITS * (denali->mtd.writesize / ECC_SECTOR_SIZE))) { @@ -1728,7 +1714,7 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) } else { denali->nand.ecc.layout = &nand_8bit_oob; denali->nand.ecc.bytes = ECC_8BITS; - denali_write32(8, denali->flash_reg + ECC_CORRECTION); + iowrite32(8, denali->flash_reg + ECC_CORRECTION); } denali->nand.ecc.bytes *= denali->devnum;