Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933226AbbLHHvy (ORCPT ); Tue, 8 Dec 2015 02:51:54 -0500 Received: from ns.gsystem.sk ([62.176.172.50]:48646 "EHLO gsystem.sk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932837AbbLHHvx (ORCPT ); Tue, 8 Dec 2015 02:51:53 -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 v2 78/71] ncr5380: Add support for HP 53C400A-based cards (C2502) Date: Tue, 8 Dec 2015 08:51:39 +0100 Message-Id: <1449561099-9981-1-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: 7125 Lines: 213 HP C2502 cards (based on 53C400A chips) use different magic numbers for software-based I/O address configuration than other cards. The configuration is also extended to allow setting the IRQ. Move the configuration to a new function magic_configure() and move magic the magic numbers into an array. Add new magic numbers for these HP cards and hp_53c400a module parameter to use them. Tested with HP C2502 and DTCT-436P. Signed-off-by: Ondrej Zary --- drivers/scsi/g_NCR5380.c | 76 ++++++++++++++++++++++++++++++++++++---------- drivers/scsi/g_NCR5380.h | 1 + 2 files changed, 61 insertions(+), 16 deletions(-) diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c index 42fdeaf..121d143 100644 --- a/drivers/scsi/g_NCR5380.c +++ b/drivers/scsi/g_NCR5380.c @@ -80,6 +80,7 @@ static int ncr_5380; static int ncr_53c400; static int ncr_53c400a; static int dtc_3181e; +static int hp_53c400a; static struct override { NCR5380_map_type NCR5380_map_name; @@ -225,6 +226,32 @@ static int __init do_DTC3181E_setup(char *str) #endif +#ifndef SCSI_G_NCR5380_MEM +/* + * Configure I/O address of 53C400A or DTC 3181 by writing magic numbers + * to ports 0x779 and 0x379. Two magic number sequences are known: + * 1. for generic NCR 53C400A-based cards and DTC436 chips + * 2. for HP C2502 card (also based on 53C400A but different decode logic) + */ +static void magic_configure(int idx, u8 irq, u8 magic[]) +{ + u8 cfg = 0; + + outb(magic[0], 0x779); + outb(magic[1], 0x379); + outb(magic[2], 0x379); + outb(magic[3], 0x379); + outb(magic[4], 0x379); + + /* allowed IRQs for HP 53C400A */ + if (irq != 2 && irq != 3 && irq != 4 && irq != 5 && irq != 7) + irq = 0; + if (idx >= 0 && idx <= 7) + cfg = 0x80 | idx | (irq << 4); + outb(cfg, 0x379); +} +#endif + /** * generic_NCR5380_detect - look for NCR5380 controllers * @tpnt: the scsi template @@ -241,8 +268,9 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) static int current_override; int count; unsigned int *ports; + u8 *magic; #ifndef SCSI_G_NCR5380_MEM - int i; + int i, port_idx; unsigned long region_size = 16; #endif static unsigned int __initdata ncr_53c400a_ports[] = { @@ -251,6 +279,12 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) static unsigned int __initdata dtc_3181e_ports[] = { 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 }; + static u8 ncr_53c400a_magic[] __initdata = { /* 53C400A & DTC 3181 */ + 0x59, 0xb9, 0xc5, 0xae, 0xa6 + }; + static u8 hp_53c400a_magic[] __initdata = { /* HP C2502 */ + 0x0f, 0x22, 0xf0, 0x20, 0x80 + }; int flags; struct Scsi_Host *instance; struct NCR5380_hostdata *hostdata; @@ -273,6 +307,8 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) overrides[0].board = BOARD_NCR53C400A; else if (dtc_3181e) overrides[0].board = BOARD_DTC3181E; + else if (hp_53c400a) + overrides[0].board = BOARD_HP53C400A; #ifndef SCSI_G_NCR5380_MEM if (!current_override && isapnp_present()) { struct pnp_dev *dev = NULL; @@ -326,10 +362,17 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) case BOARD_NCR53C400A: flags = FLAG_NO_DMA_FIXUP; ports = ncr_53c400a_ports; + magic = ncr_53c400a_magic; + break; + case BOARD_HP53C400A: + flags = FLAG_NO_DMA_FIXUP; + ports = ncr_53c400a_ports; + magic = hp_53c400a_magic; break; case BOARD_DTC3181E: flags = FLAG_NO_DMA_FIXUP; ports = dtc_3181e_ports; + magic = ncr_53c400a_magic; break; } @@ -338,12 +381,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) /* wakeup sequence for the NCR53C400A and DTC3181E */ /* Disable the adapter and look for a free io port */ - outb(0x59, 0x779); - outb(0xb9, 0x379); - outb(0xc5, 0x379); - outb(0xae, 0x379); - outb(0xa6, 0x379); - outb(0x00, 0x379); + magic_configure(-1, 0, magic); if (overrides[current_override].NCR5380_map_name != PORT_AUTO) for (i = 0; ports[i]; i++) { @@ -362,17 +400,14 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) } if (ports[i]) { /* At this point we have our region reserved */ - outb(0x59, 0x779); - outb(0xb9, 0x379); - outb(0xc5, 0x379); - outb(0xae, 0x379); - outb(0xa6, 0x379); - outb(0x80 | i, 0x379); /* set io port to be used */ + magic_configure(i, 0, magic); /* no IRQ yet */ outb(0xc0, ports[i] + 9); - if (inb(ports[i] + 9) != 0x80) + if (inb(ports[i] + 9) != 0x80) { continue; - else + } else { overrides[current_override].NCR5380_map_name = ports[i]; + port_idx = i; + } } else continue; } @@ -418,6 +453,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) hostdata->io_width = 2; /* 16-bit PDMA */ /* fall through */ case BOARD_NCR53C400A: + case BOARD_HP53C400A: hostdata->c400_ctl_status = 9; hostdata->c400_blk_cnt = 10; hostdata->c400_host_buf = 8; @@ -438,6 +474,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) if (overrides[current_override].board == BOARD_NCR53C400 || overrides[current_override].board == BOARD_NCR53C400A || + overrides[current_override].board == BOARD_HP53C400A || overrides[current_override].board == BOARD_DTC3181E) NCR5380_write(hostdata->c400_ctl_status, CSR_BASE); @@ -452,12 +489,18 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) if (instance->irq == 255) instance->irq = NO_IRQ; - if (instance->irq != NO_IRQ) + if (instance->irq != NO_IRQ) { +#ifndef SCSI_G_NCR5380_MEM + /* set IRQ for HP 53C400A */ + if (overrides[current_override].board == BOARD_HP53C400A) + magic_configure(port_idx, instance->irq, magic); +#endif if (request_irq(instance->irq, generic_NCR5380_intr, 0, "NCR5380", instance)) { printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); instance->irq = NO_IRQ; } + } if (instance->irq == NO_IRQ) { printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); @@ -743,6 +786,7 @@ module_param(ncr_5380, int, 0); module_param(ncr_53c400, int, 0); module_param(ncr_53c400a, int, 0); module_param(dtc_3181e, int, 0); +module_param(hp_53c400a, int, 0); MODULE_LICENSE("GPL"); #if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE) diff --git a/drivers/scsi/g_NCR5380.h b/drivers/scsi/g_NCR5380.h index 5ab64d9..4fbae53 100644 --- a/drivers/scsi/g_NCR5380.h +++ b/drivers/scsi/g_NCR5380.h @@ -88,6 +88,7 @@ #define BOARD_NCR53C400 1 #define BOARD_NCR53C400A 2 #define BOARD_DTC3181E 3 +#define BOARD_HP53C400A 4 #endif /* GENERIC_NCR5380_H */ -- 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/