Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/net/wan/sdladrv.c b/drivers/net/wan/sdladrv.c
new file mode 100644
index 0000000..c8bc6da
--- /dev/null
+++ b/drivers/net/wan/sdladrv.c
@@ -0,0 +1,2318 @@
+/*****************************************************************************
+* sdladrv.c SDLA Support Module. Main module.
+*
+* This module is a library of common hardware-specific functions
+* used by all Sangoma drivers.
+*
+* Author: Gideon Hack
+*
+* Copyright: (c) 1995-2000 Sangoma Technologies Inc.
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version
+* 2 of the License, or (at your option) any later version.
+* ============================================================================
+* Mar 20, 2001 Nenad Corbic Added the auto_pci_cfg filed, to support
+* the PCISLOT #0.
+* Apr 04, 2000 Nenad Corbic Fixed the auto memory detection code.
+* The memory test at address 0xC8000.
+* Mar 09, 2000 Nenad Corbic Added Gideon's Bug Fix: clear pci
+* interrupt flags on initial load.
+* Jun 02, 1999 Gideon Hack Added support for the S514 adapter.
+* Updates for Linux 2.2.X kernels.
+* Sep 17, 1998 Jaspreet Singh Updates for linux 2.2.X kernels
+* Dec 20, 1996 Gene Kozin Version 3.0.0. Complete overhaul.
+* Jul 12, 1996 Gene Kozin Changes for Linux 2.0 compatibility.
+* Jun 12, 1996 Gene Kozin Added support for S503 card.
+* Apr 30, 1996 Gene Kozin SDLA hardware interrupt is acknowledged before
+* calling protocolspecific ISR.
+* Register I/O ports with Linux kernel.
+* Miscellaneous bug fixes.
+* Dec 20, 1995 Gene Kozin Fixed a bug in interrupt routine.
+* Oct 14, 1995 Gene Kozin Initial version.
+*****************************************************************************/
+
+/*****************************************************************************
+ * Notes:
+ * ------
+ * 1. This code is ment to be system-independent (as much as possible). To
+ * achive this, various macros are used to hide system-specific interfaces.
+ * To compile this code, one of the following constants must be defined:
+ *
+ * Platform Define
+ * -------- ------
+ * Linux _LINUX_
+ * SCO Unix _SCO_UNIX_
+ *
+ * 2. Supported adapter types:
+ *
+ * S502A
+ * ES502A (S502E)
+ * S503
+ * S507
+ * S508 (S509)
+ *
+ * 3. S502A Notes:
+ *
+ * There is no separate DPM window enable/disable control in S502A. It
+ * opens immediately after a window number it written to the HMCR
+ * register. To close the window, HMCR has to be written a value
+ * ????1111b (e.g. 0x0F or 0xFF).
+ *
+ * S502A DPM window cannot be located at offset E000 (e.g. 0xAE000).
+ *
+ * There should be a delay of ??? before reading back S502A status
+ * register.
+ *
+ * 4. S502E Notes:
+ *
+ * S502E has a h/w bug: although default IRQ line state is HIGH, enabling
+ * interrupts by setting bit 1 of the control register (BASE) to '1'
+ * causes it to go LOW! Therefore, disabling interrupts by setting that
+ * bit to '0' causes low-to-high transition on IRQ line (ghosty
+ * interrupt). The same occurs when disabling CPU by resetting bit 0 of
+ * CPU control register (BASE+3) - see the next note.
+ *
+ * S502E CPU and DPM control is limited:
+ *
+ * o CPU cannot be stopped independently. Resetting bit 0 of the CPUi
+ * control register (BASE+3) shuts the board down entirely, including
+ * DPM;
+ *
+ * o DPM access cannot be controlled dynamically. Ones CPU is started,
+ * bit 1 of the control register (BASE) is used to enable/disable IRQ,
+ * so that access to shared memory cannot be disabled while CPU is
+ * running.
+ ****************************************************************************/
+
+#define _LINUX_
+
+#if defined(_LINUX_) /****** Linux *******************************/
+
+#include <linux/config.h>
+#include <linux/kernel.h> /* printk(), and other useful stuff */
+#include <linux/stddef.h> /* offsetof(), etc. */
+#include <linux/errno.h> /* return codes */
+#include <linux/string.h> /* inline memset(), etc. */
+#include <linux/module.h> /* support for loadable modules */
+#include <linux/jiffies.h> /* for jiffies, HZ, etc. */
+#include <linux/sdladrv.h> /* API definitions */
+#include <linux/sdlasfm.h> /* SDLA firmware module definitions */
+#include <linux/sdlapci.h> /* SDLA PCI hardware definitions */
+#include <linux/pci.h> /* PCI defines and function prototypes */
+#include <asm/io.h> /* for inb(), outb(), etc. */
+
+#define _INB(port) (inb(port))
+#define _OUTB(port, byte) (outb((byte),(port)))
+#define SYSTEM_TICK jiffies
+
+#include <linux/init.h>
+
+
+#elif defined(_SCO_UNIX_) /****** SCO Unix ****************************/
+
+#if !defined(INKERNEL)
+#error This code MUST be compiled in kernel mode!
+#endif
+#include <sys/sdladrv.h> /* API definitions */
+#include <sys/sdlasfm.h> /* SDLA firmware module definitions */
+#include <sys/inline.h> /* for inb(), outb(), etc. */
+#define _INB(port) (inb(port))
+#define _OUTB(port, byte) (outb((port),(byte)))
+#define SYSTEM_TICK lbolt
+
+#else
+#error Unknown system type!
+#endif
+
+#define MOD_VERSION 3
+#define MOD_RELEASE 0
+
+#define SDLA_IODELAY 100 /* I/O Rd/Wr delay, 10 works for 486DX2-66 */
+#define EXEC_DELAY 20 /* shared memory access delay, mks */
+#define EXEC_TIMEOUT (HZ*2) /* command timeout, in ticks */
+
+/* I/O port address range */
+#define S502A_IORANGE 3
+#define S502E_IORANGE 4
+#define S503_IORANGE 3
+#define S507_IORANGE 4
+#define S508_IORANGE 4
+
+/* Maximum amount of memory */
+#define S502_MAXMEM 0x10000L
+#define S503_MAXMEM 0x10000L
+#define S507_MAXMEM 0x40000L
+#define S508_MAXMEM 0x40000L
+
+/* Minimum amount of memory */
+#define S502_MINMEM 0x8000L
+#define S503_MINMEM 0x8000L
+#define S507_MINMEM 0x20000L
+#define S508_MINMEM 0x20000L
+#define NO_PORT -1
+
+
+
+
+
+/****** Function Prototypes *************************************************/
+
+/* Hardware-specific functions */
+static int sdla_detect (sdlahw_t* hw);
+static int sdla_autodpm (sdlahw_t* hw);
+static int sdla_setdpm (sdlahw_t* hw);
+static int sdla_load (sdlahw_t* hw, sfm_t* sfm, unsigned len);
+static int sdla_init (sdlahw_t* hw);
+static unsigned long sdla_memtest (sdlahw_t* hw);
+static int sdla_bootcfg (sdlahw_t* hw, sfm_info_t* sfminfo);
+static unsigned char make_config_byte (sdlahw_t* hw);
+static int sdla_start (sdlahw_t* hw, unsigned addr);
+
+static int init_s502a (sdlahw_t* hw);
+static int init_s502e (sdlahw_t* hw);
+static int init_s503 (sdlahw_t* hw);
+static int init_s507 (sdlahw_t* hw);
+static int init_s508 (sdlahw_t* hw);
+
+static int detect_s502a (int port);
+static int detect_s502e (int port);
+static int detect_s503 (int port);
+static int detect_s507 (int port);
+static int detect_s508 (int port);
+static int detect_s514 (sdlahw_t* hw);
+static int find_s514_adapter(sdlahw_t* hw, char find_first_S514_card);
+
+/* Miscellaneous functions */
+static void peek_by_4 (unsigned long src, void* buf, unsigned len);
+static void poke_by_4 (unsigned long dest, void* buf, unsigned len);
+static int calibrate_delay (int mks);
+static int get_option_index (unsigned* optlist, unsigned optval);
+static unsigned check_memregion (void* ptr, unsigned len);
+static unsigned test_memregion (void* ptr, unsigned len);
+static unsigned short checksum (unsigned char* buf, unsigned len);
+static int init_pci_slot(sdlahw_t *);
+
+static int pci_probe(sdlahw_t *hw);
+
+/****** Global Data **********************************************************
+ * Note: All data must be explicitly initialized!!!
+ */
+
+static struct pci_device_id sdladrv_pci_tbl[] = {
+ { V3_VENDOR_ID, V3_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, },
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, sdladrv_pci_tbl);
+
+MODULE_LICENSE("GPL");
+
+/* private data */
+static char modname[] = "sdladrv";
+static char fullname[] = "SDLA Support Module";
+static char copyright[] = "(c) 1995-1999 Sangoma Technologies Inc.";
+static unsigned exec_idle;
+
+/* Hardware configuration options.
+ * These are arrays of configuration options used by verification routines.
+ * The first element of each array is its size (i.e. number of options).
+ */
+static unsigned s502_port_options[] =
+ { 4, 0x250, 0x300, 0x350, 0x360 }
+;
+static unsigned s503_port_options[] =
+ { 8, 0x250, 0x254, 0x300, 0x304, 0x350, 0x354, 0x360, 0x364 }
+;
+static unsigned s508_port_options[] =
+ { 8, 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390 }
+;
+
+static unsigned s502a_irq_options[] = { 0 };
+static unsigned s502e_irq_options[] = { 4, 2, 3, 5, 7 };
+static unsigned s503_irq_options[] = { 5, 2, 3, 4, 5, 7 };
+static unsigned s508_irq_options[] = { 8, 3, 4, 5, 7, 10, 11, 12, 15 };
+
+static unsigned s502a_dpmbase_options[] =
+{
+ 28,
+ 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000,
+ 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000,
+ 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000,
+ 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000,
+};
+static unsigned s507_dpmbase_options[] =
+{
+ 32,
+ 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
+ 0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
+ 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
+ 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000,
+};
+static unsigned s508_dpmbase_options[] = /* incl. S502E and S503 */
+{
+ 32,
+ 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
+ 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
+ 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
+ 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000,
+};
+
+/*
+static unsigned s502_dpmsize_options[] = { 2, 0x2000, 0x10000 };
+static unsigned s507_dpmsize_options[] = { 2, 0x2000, 0x4000 };
+static unsigned s508_dpmsize_options[] = { 1, 0x2000 };
+*/
+
+static unsigned s502a_pclk_options[] = { 2, 3600, 7200 };
+static unsigned s502e_pclk_options[] = { 5, 3600, 5000, 7200, 8000, 10000 };
+static unsigned s503_pclk_options[] = { 3, 7200, 8000, 10000 };
+static unsigned s507_pclk_options[] = { 1, 12288 };
+static unsigned s508_pclk_options[] = { 1, 16000 };
+
+/* Host memory control register masks */
+static unsigned char s502a_hmcr[] =
+{
+ 0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, /* A0000 - AC000 */
+ 0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C, /* C0000 - CC000 */
+ 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, /* D0000 - DC000 */
+ 0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C, /* E0000 - EC000 */
+};
+static unsigned char s502e_hmcr[] =
+{
+ 0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, 0x1E, /* A0000 - AE000 */
+ 0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C, 0x2E, /* C0000 - CE000 */
+ 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E, /* D0000 - DE000 */
+ 0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C, 0x3E, /* E0000 - EE000 */
+};
+static unsigned char s507_hmcr[] =
+{
+ 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E, /* A0000 - AE000 */
+ 0x40, 0x42, 0x44, 0x46, 0x48, 0x4A, 0x4C, 0x4E, /* B0000 - BE000 */
+ 0x80, 0x82, 0x84, 0x86, 0x88, 0x8A, 0x8C, 0x8E, /* C0000 - CE000 */
+ 0xC0, 0xC2, 0xC4, 0xC6, 0xC8, 0xCA, 0xCC, 0xCE, /* E0000 - EE000 */
+};
+static unsigned char s508_hmcr[] =
+{
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* A0000 - AE000 */
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* C0000 - CE000 */
+ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, /* D0000 - DE000 */
+ 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, /* E0000 - EE000 */
+};
+
+static unsigned char s507_irqmask[] =
+{
+ 0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0xE0
+};
+
+static int pci_slot_ar[MAX_S514_CARDS];
+
+/******* Kernel Loadable Module Entry Points ********************************/
+
+/*============================================================================
+ * Module 'insert' entry point.
+ * o print announcement
+ * o initialize static data
+ * o calibrate SDLA shared memory access delay.
+ *
+ * Return: 0 Ok
+ * < 0 error.
+ * Context: process
+ */
+
+static int __init sdladrv_init(void)
+{
+ int i=0;
+
+ printk(KERN_INFO "%s v%u.%u %s\n",
+ fullname, MOD_VERSION, MOD_RELEASE, copyright);
+ exec_idle = calibrate_delay(EXEC_DELAY);
+#ifdef WANDEBUG
+ printk(KERN_DEBUG "%s: exec_idle = %d\n", modname, exec_idle);
+#endif
+
+ /* Initialize the PCI Card array, which
+ * will store flags, used to mark
+ * card initialization state */
+ for (i=0; i<MAX_S514_CARDS; i++)
+ pci_slot_ar[i] = 0xFF;
+
+ return 0;
+}
+
+/*============================================================================
+ * Module 'remove' entry point.
+ * o release all remaining system resources
+ */
+static void __exit sdladrv_cleanup(void)
+{
+}
+
+module_init(sdladrv_init);
+module_exit(sdladrv_cleanup);
+
+/******* Kernel APIs ********************************************************/
+
+/*============================================================================
+ * Set up adapter.
+ * o detect adapter type
+ * o verify hardware configuration options
+ * o check for hardware conflicts
+ * o set up adapter shared memory
+ * o test adapter memory
+ * o load firmware
+ * Return: 0 ok.
+ * < 0 error
+ */
+
+EXPORT_SYMBOL(sdla_setup);
+
+int sdla_setup (sdlahw_t* hw, void* sfm, unsigned len)
+{
+ unsigned* irq_opt = NULL; /* IRQ options */
+ unsigned* dpmbase_opt = NULL; /* DPM window base options */
+ unsigned* pclk_opt = NULL; /* CPU clock rate options */
+ int err=0;
+
+ if (sdla_detect(hw)) {
+ if(hw->type != SDLA_S514)
+ printk(KERN_INFO "%s: no SDLA card found at port 0x%X\n",
+ modname, hw->port);
+ return -EINVAL;
+ }
+
+ if(hw->type != SDLA_S514) {
+ printk(KERN_INFO "%s: found S%04u card at port 0x%X.\n",
+ modname, hw->type, hw->port);
+
+ hw->dpmsize = SDLA_WINDOWSIZE;
+ switch (hw->type) {
+ case SDLA_S502A:
+ hw->io_range = S502A_IORANGE;
+ irq_opt = s502a_irq_options;
+ dpmbase_opt = s502a_dpmbase_options;
+ pclk_opt = s502a_pclk_options;
+ break;
+
+ case SDLA_S502E:
+ hw->io_range = S502E_IORANGE;
+ irq_opt = s502e_irq_options;
+ dpmbase_opt = s508_dpmbase_options;
+ pclk_opt = s502e_pclk_options;
+ break;
+
+ case SDLA_S503:
+ hw->io_range = S503_IORANGE;
+ irq_opt = s503_irq_options;
+ dpmbase_opt = s508_dpmbase_options;
+ pclk_opt = s503_pclk_options;
+ break;
+
+ case SDLA_S507:
+ hw->io_range = S507_IORANGE;
+ irq_opt = s508_irq_options;
+ dpmbase_opt = s507_dpmbase_options;
+ pclk_opt = s507_pclk_options;
+ break;
+
+ case SDLA_S508:
+ hw->io_range = S508_IORANGE;
+ irq_opt = s508_irq_options;
+ dpmbase_opt = s508_dpmbase_options;
+ pclk_opt = s508_pclk_options;
+ break;
+ }
+
+ /* Verify IRQ configuration options */
+ if (!get_option_index(irq_opt, hw->irq)) {
+ printk(KERN_INFO "%s: IRQ %d is invalid!\n",
+ modname, hw->irq);
+ return -EINVAL;
+ }
+
+ /* Verify CPU clock rate configuration options */
+ if (hw->pclk == 0)
+ hw->pclk = pclk_opt[1]; /* use default */
+
+ else if (!get_option_index(pclk_opt, hw->pclk)) {
+ printk(KERN_INFO "%s: CPU clock %u is invalid!\n",
+ modname, hw->pclk);
+ return -EINVAL;
+ }
+ printk(KERN_INFO "%s: assuming CPU clock rate of %u kHz.\n",
+ modname, hw->pclk);
+
+ /* Setup adapter dual-port memory window and test memory */
+ if (hw->dpmbase == 0) {
+ err = sdla_autodpm(hw);
+ if (err) {
+ printk(KERN_INFO
+ "%s: can't find available memory region!\n",
+ modname);
+ return err;
+ }
+ }
+ else if (!get_option_index(dpmbase_opt,
+ virt_to_phys(hw->dpmbase))) {
+ printk(KERN_INFO
+ "%s: memory address 0x%lX is invalid!\n",
+ modname, virt_to_phys(hw->dpmbase));
+ return -EINVAL;
+ }
+ else if (sdla_setdpm(hw)) {
+ printk(KERN_INFO
+ "%s: 8K memory region at 0x%lX is not available!\n",
+ modname, virt_to_phys(hw->dpmbase));
+ return -EINVAL;
+ }
+ printk(KERN_INFO
+ "%s: dual-port memory window is set at 0x%lX.\n",
+ modname, virt_to_phys(hw->dpmbase));
+
+
+ /* If we find memory in 0xE**** Memory region,
+ * warn the user to disable the SHADOW RAM.
+ * Since memory corruption can occur if SHADOW is
+ * enabled. This can causes random crashes ! */
+ if (virt_to_phys(hw->dpmbase) >= 0xE0000){
+ printk(KERN_WARNING "\n%s: !!!!!!!! WARNING !!!!!!!!\n",modname);
+ printk(KERN_WARNING "%s: WANPIPE is using 0x%lX memory region !!!\n",
+ modname, virt_to_phys(hw->dpmbase));
+ printk(KERN_WARNING " Please disable the SHADOW RAM, otherwise\n");
+ printk(KERN_WARNING " your system might crash randomly from time to time !\n");
+ printk(KERN_WARNING "%s: !!!!!!!! WARNING !!!!!!!!\n\n",modname);
+ }
+ }
+
+ else {
+ hw->memory = test_memregion((void*)hw->dpmbase,
+ MAX_SIZEOF_S514_MEMORY);
+ if(hw->memory < (256 * 1024)) {
+ printk(KERN_INFO
+ "%s: error in testing S514 memory (0x%lX)\n",
+ modname, hw->memory);
+ sdla_down(hw);
+ return -EINVAL;
+ }
+ }
+
+ printk(KERN_INFO "%s: found %luK bytes of on-board memory\n",
+ modname, hw->memory / 1024);
+
+ /* Load firmware. If loader fails then shut down adapter */
+ err = sdla_load(hw, sfm, len);
+ if (err) sdla_down(hw); /* shutdown adapter */
+
+ return err;
+}
+
+/*============================================================================
+ * Shut down SDLA: disable shared memory access and interrupts, stop CPU, etc.
+ */
+
+EXPORT_SYMBOL(sdla_down);
+
+int sdla_down (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+ int i;
+ unsigned char CPU_no;
+ u32 int_config, int_status;
+
+ if(!port && (hw->type != SDLA_S514))
+ return -EFAULT;
+
+ switch (hw->type) {
+ case SDLA_S502A:
+ _OUTB(port, 0x08); /* halt CPU */
+ _OUTB(port, 0x08);
+ _OUTB(port, 0x08);
+ hw->regs[0] = 0x08;
+ _OUTB(port + 1, 0xFF); /* close memory window */
+ hw->regs[1] = 0xFF;
+ break;
+
+ case SDLA_S502E:
+ _OUTB(port + 3, 0); /* stop CPU */
+ _OUTB(port, 0); /* reset board */
+ for (i = 0; i < S502E_IORANGE; ++i)
+ hw->regs[i] = 0
+ ;
+ break;
+
+ case SDLA_S503:
+ case SDLA_S507:
+ case SDLA_S508:
+ _OUTB(port, 0); /* reset board logic */
+ hw->regs[0] = 0;
+ break;
+
+ case SDLA_S514:
+ /* halt the adapter */
+ *(char *)hw->vector = S514_CPU_HALT;
+ CPU_no = hw->S514_cpu_no[0];
+
+ /* disable the PCI IRQ and disable memory access */
+ pci_read_config_dword(hw->pci_dev, PCI_INT_CONFIG, &int_config);
+ int_config &= (CPU_no == S514_CPU_A) ? ~PCI_DISABLE_IRQ_CPU_A : ~PCI_DISABLE_IRQ_CPU_B;
+ pci_write_config_dword(hw->pci_dev, PCI_INT_CONFIG, int_config);
+ read_S514_int_stat(hw, &int_status);
+ S514_intack(hw, int_status);
+ if(CPU_no == S514_CPU_A)
+ pci_write_config_dword(hw->pci_dev, PCI_MAP0_DWORD,
+ PCI_CPU_A_MEM_DISABLE);
+ else
+ pci_write_config_dword(hw->pci_dev, PCI_MAP1_DWORD,
+ PCI_CPU_B_MEM_DISABLE);
+
+ /* free up the allocated virtual memory */
+ iounmap((void *)hw->dpmbase);
+ iounmap((void *)hw->vector);
+ break;
+
+
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*============================================================================
+ * Map shared memory window into SDLA address space.
+ */
+
+EXPORT_SYMBOL(sdla_mapmem);
+
+int sdla_mapmem (sdlahw_t* hw, unsigned long addr)
+{
+ unsigned port = hw->port;
+ register int tmp;
+
+ switch (hw->type) {
+ case SDLA_S502A:
+ case SDLA_S502E:
+ if (addr < S502_MAXMEM) { /* verify parameter */
+ tmp = addr >> 13; /* convert to register mask */
+ _OUTB(port + 2, tmp);
+ hw->regs[2] = tmp;
+ }
+ else return -EINVAL;
+ break;
+
+ case SDLA_S503:
+ if (addr < S503_MAXMEM) { /* verify parameter */
+ tmp = (hw->regs[0] & 0x8F) | ((addr >> 9) & 0x70);
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp;
+ }
+ else return -EINVAL;
+ break;
+
+ case SDLA_S507:
+ if (addr < S507_MAXMEM) {
+ if (!(_INB(port) & 0x02))
+ return -EIO;
+ tmp = addr >> 13; /* convert to register mask */
+ _OUTB(port + 2, tmp);
+ hw->regs[2] = tmp;
+ }
+ else return -EINVAL;
+ break;
+
+ case SDLA_S508:
+ if (addr < S508_MAXMEM) {
+ tmp = addr >> 13; /* convert to register mask */
+ _OUTB(port + 2, tmp);
+ hw->regs[2] = tmp;
+ }
+ else return -EINVAL;
+ break;
+
+ case SDLA_S514:
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+ hw->vector = addr & 0xFFFFE000L;
+ return 0;
+}
+
+/*============================================================================
+ * Enable interrupt generation.
+ */
+
+EXPORT_SYMBOL(sdla_inten);
+
+int sdla_inten (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+ int tmp, i;
+
+ switch (hw->type) {
+ case SDLA_S502E:
+ /* Note thar interrupt control operations on S502E are allowed
+ * only if CPU is enabled (bit 0 of status register is set).
+ */
+ if (_INB(port) & 0x01) {
+ _OUTB(port, 0x02); /* bit1 = 1, bit2 = 0 */
+ _OUTB(port, 0x06); /* bit1 = 1, bit2 = 1 */
+ hw->regs[0] = 0x06;
+ }
+ else return -EIO;
+ break;
+
+ case SDLA_S503:
+ tmp = hw->regs[0] | 0x04;
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp; /* update mirror */
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (!(_INB(port) & 0x02)) /* verify */
+ return -EIO;
+ break;
+
+ case SDLA_S508:
+ tmp = hw->regs[0] | 0x10;
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp; /* update mirror */
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (!(_INB(port + 1) & 0x10)) /* verify */
+ return -EIO;
+ break;
+
+ case SDLA_S502A:
+ case SDLA_S507:
+ break;
+
+ case SDLA_S514:
+ break;
+
+ default:
+ return -EINVAL;
+
+ }
+ return 0;
+}
+
+/*============================================================================
+ * Disable interrupt generation.
+ */
+
+EXPORT_SYMBOL(sdla_intde);
+
+int sdla_intde (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+ int tmp, i;
+
+ switch (hw->type) {
+ case SDLA_S502E:
+ /* Notes:
+ * 1) interrupt control operations are allowed only if CPU is
+ * enabled (bit 0 of status register is set).
+ * 2) disabling interrupts using bit 1 of control register
+ * causes IRQ line go high, therefore we are going to use
+ * 0x04 instead: lower it to inhibit interrupts to PC.
+ */
+ if (_INB(port) & 0x01) {
+ _OUTB(port, hw->regs[0] & ~0x04);
+ hw->regs[0] &= ~0x04;
+ }
+ else return -EIO;
+ break;
+
+ case SDLA_S503:
+ tmp = hw->regs[0] & ~0x04;
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp; /* update mirror */
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (_INB(port) & 0x02) /* verify */
+ return -EIO;
+ break;
+
+ case SDLA_S508:
+ tmp = hw->regs[0] & ~0x10;
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp; /* update mirror */
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (_INB(port) & 0x10) /* verify */
+ return -EIO;
+ break;
+
+ case SDLA_S502A:
+ case SDLA_S507:
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*============================================================================
+ * Acknowledge SDLA hardware interrupt.
+ */
+
+EXPORT_SYMBOL(sdla_intack);
+
+int sdla_intack (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+ int tmp;
+
+ switch (hw->type) {
+ case SDLA_S502E:
+ /* To acknoledge hardware interrupt we have to toggle bit 3 of
+ * control register: \_/
+ * Note that interrupt control operations on S502E are allowed
+ * only if CPU is enabled (bit 1 of status register is set).
+ */
+ if (_INB(port) & 0x01) {
+ tmp = hw->regs[0] & ~0x04;
+ _OUTB(port, tmp);
+ tmp |= 0x04;
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp;
+ }
+ else return -EIO;
+ break;
+
+ case SDLA_S503:
+ if (_INB(port) & 0x04) {
+ tmp = hw->regs[0] & ~0x08;
+ _OUTB(port, tmp);
+ tmp |= 0x08;
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp;
+ }
+ break;
+
+ case SDLA_S502A:
+ case SDLA_S507:
+ case SDLA_S508:
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+
+/*============================================================================
+ * Acknowledge S514 hardware interrupt.
+ */
+
+EXPORT_SYMBOL(S514_intack);
+
+void S514_intack (sdlahw_t* hw, u32 int_status)
+{
+ pci_write_config_dword(hw->pci_dev, PCI_INT_STATUS, int_status);
+}
+
+
+/*============================================================================
+ * Read the S514 hardware interrupt status.
+ */
+
+EXPORT_SYMBOL(read_S514_int_stat);
+
+void read_S514_int_stat (sdlahw_t* hw, u32* int_status)
+{
+ pci_read_config_dword(hw->pci_dev, PCI_INT_STATUS, int_status);
+}
+
+
+/*============================================================================
+ * Generate an interrupt to adapter's CPU.
+ */
+
+EXPORT_SYMBOL(sdla_intr);
+
+int sdla_intr (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+
+ switch (hw->type) {
+ case SDLA_S502A:
+ if (!(_INB(port) & 0x40)) {
+ _OUTB(port, 0x10); /* issue NMI to CPU */
+ hw->regs[0] = 0x10;
+ }
+ else return -EIO;
+ break;
+
+ case SDLA_S507:
+ if ((_INB(port) & 0x06) == 0x06) {
+ _OUTB(port + 3, 0);
+ }
+ else return -EIO;
+ break;
+
+ case SDLA_S508:
+ if (_INB(port + 1) & 0x02) {
+ _OUTB(port, 0x08);
+ }
+ else return -EIO;
+ break;
+
+ case SDLA_S502E:
+ case SDLA_S503:
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*============================================================================
+ * Execute Adapter Command.
+ * o Set exec flag.
+ * o Busy-wait until flag is reset.
+ * o Return number of loops made, or 0 if command timed out.
+ */
+
+EXPORT_SYMBOL(sdla_exec);
+
+int sdla_exec (void* opflag)
+{
+ volatile unsigned char* flag = opflag;
+ unsigned long tstop;
+ int nloops;
+
+ if(readb(flag) != 0x00) {
+ printk(KERN_INFO
+ "WANPIPE: opp flag set on entry to sdla_exec\n");
+ return 0;
+ }
+
+ writeb(0x01, flag);
+
+ tstop = SYSTEM_TICK + EXEC_TIMEOUT;
+
+ for (nloops = 1; (readb(flag) == 0x01); ++ nloops) {
+ unsigned delay = exec_idle;
+ while (-- delay); /* delay */
+ if (SYSTEM_TICK > tstop) return 0; /* time is up! */
+ }
+ return nloops;
+}
+
+/*============================================================================
+ * Read absolute adapter memory.
+ * Transfer data from adapter's memory to data buffer.
+ *
+ * Note:
+ * Care should be taken when crossing dual-port memory window boundary.
+ * This function is not atomic, so caller must disable interrupt if
+ * interrupt routines are accessing adapter shared memory.
+ */
+
+EXPORT_SYMBOL(sdla_peek);
+
+int sdla_peek (sdlahw_t* hw, unsigned long addr, void* buf, unsigned len)
+{
+
+ if (addr + len > hw->memory) /* verify arguments */
+ return -EINVAL;
+
+ if(hw->type == SDLA_S514) { /* copy data for the S514 adapter */
+ peek_by_4 ((unsigned long)hw->dpmbase + addr, buf, len);
+ return 0;
+ }
+
+ else { /* copy data for the S508 adapter */
+ unsigned long oldvec = hw->vector;
+ unsigned winsize = hw->dpmsize;
+ unsigned curpos, curlen; /* current offset and block size */
+ unsigned long curvec; /* current DPM window vector */
+ int err = 0;
+
+ while (len && !err) {
+ curpos = addr % winsize; /* current window offset */
+ curvec = addr - curpos; /* current window vector */
+ curlen = (len > (winsize - curpos)) ?
+ (winsize - curpos) : len;
+ /* Relocate window and copy block of data */
+ err = sdla_mapmem(hw, curvec);
+ peek_by_4 ((unsigned long)hw->dpmbase + curpos, buf,
+ curlen);
+ addr += curlen;
+ buf = (char*)buf + curlen;
+ len -= curlen;
+ }
+
+ /* Restore DPM window position */
+ sdla_mapmem(hw, oldvec);
+ return err;
+ }
+}
+
+
+/*============================================================================
+ * Read data from adapter's memory to a data buffer in 4-byte chunks.
+ * Note that we ensure that the SDLA memory address is on a 4-byte boundary
+ * before we begin moving the data in 4-byte chunks.
+*/
+
+static void peek_by_4 (unsigned long src, void* buf, unsigned len)
+{
+
+ /* byte copy data until we get to a 4-byte boundary */
+ while (len && (src & 0x03)) {
+ *(char *)buf ++ = readb(src ++);
+ len --;
+ }
+
+ /* copy data in 4-byte chunks */
+ while (len >= 4) {
+ *(unsigned long *)buf = readl(src);
+ buf += 4;
+ src += 4;
+ len -= 4;
+ }
+
+ /* byte copy any remaining data */
+ while (len) {
+ *(char *)buf ++ = readb(src ++);
+ len --;
+ }
+}
+
+
+/*============================================================================
+ * Write Absolute Adapter Memory.
+ * Transfer data from data buffer to adapter's memory.
+ *
+ * Note:
+ * Care should be taken when crossing dual-port memory window boundary.
+ * This function is not atomic, so caller must disable interrupt if
+ * interrupt routines are accessing adapter shared memory.
+ */
+
+EXPORT_SYMBOL(sdla_poke);
+
+int sdla_poke (sdlahw_t* hw, unsigned long addr, void* buf, unsigned len)
+{
+
+ if (addr + len > hw->memory) /* verify arguments */
+ return -EINVAL;
+
+ if(hw->type == SDLA_S514) { /* copy data for the S514 adapter */
+ poke_by_4 ((unsigned long)hw->dpmbase + addr, buf, len);
+ return 0;
+ }
+
+ else { /* copy data for the S508 adapter */
+ unsigned long oldvec = hw->vector;
+ unsigned winsize = hw->dpmsize;
+ unsigned curpos, curlen; /* current offset and block size */
+ unsigned long curvec; /* current DPM window vector */
+ int err = 0;
+
+ while (len && !err) {
+ curpos = addr % winsize; /* current window offset */
+ curvec = addr - curpos; /* current window vector */
+ curlen = (len > (winsize - curpos)) ?
+ (winsize - curpos) : len;
+ /* Relocate window and copy block of data */
+ sdla_mapmem(hw, curvec);
+ poke_by_4 ((unsigned long)hw->dpmbase + curpos, buf,
+ curlen);
+ addr += curlen;
+ buf = (char*)buf + curlen;
+ len -= curlen;
+ }
+
+ /* Restore DPM window position */
+ sdla_mapmem(hw, oldvec);
+ return err;
+ }
+}
+
+
+/*============================================================================
+ * Write from a data buffer to adapter's memory in 4-byte chunks.
+ * Note that we ensure that the SDLA memory address is on a 4-byte boundary
+ * before we begin moving the data in 4-byte chunks.
+*/
+
+static void poke_by_4 (unsigned long dest, void* buf, unsigned len)
+{
+
+ /* byte copy data until we get to a 4-byte boundary */
+ while (len && (dest & 0x03)) {
+ writeb (*(char *)buf ++, dest ++);
+ len --;
+ }
+
+ /* copy data in 4-byte chunks */
+ while (len >= 4) {
+ writel (*(unsigned long *)buf, dest);
+ dest += 4;
+ buf += 4;
+ len -= 4;
+ }
+
+ /* byte copy any remaining data */
+ while (len) {
+ writeb (*(char *)buf ++ , dest ++);
+ len --;
+ }
+}
+
+
+#ifdef DONT_COMPIPLE_THIS
+#endif /* DONT_COMPIPLE_THIS */
+
+/****** Hardware-Specific Functions *****************************************/
+
+/*============================================================================
+ * Detect adapter type.
+ * o if adapter type is specified then call detection routine for that adapter
+ * type. Otherwise call detection routines for every adapter types until
+ * adapter is detected.
+ *
+ * Notes:
+ * 1) Detection tests are destructive! Adapter will be left in shutdown state
+ * after the test.
+ */
+static int sdla_detect (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+ int err = 0;
+
+ if (!port && (hw->type != SDLA_S514))
+ return -EFAULT;
+
+ switch (hw->type) {
+ case SDLA_S502A:
+ if (!detect_s502a(port)) err = -ENODEV;
+ break;
+
+ case SDLA_S502E:
+ if (!detect_s502e(port)) err = -ENODEV;
+ break;
+
+ case SDLA_S503:
+ if (!detect_s503(port)) err = -ENODEV;
+ break;
+
+ case SDLA_S507:
+ if (!detect_s507(port)) err = -ENODEV;
+ break;
+
+ case SDLA_S508:
+ if (!detect_s508(port)) err = -ENODEV;
+ break;
+
+ case SDLA_S514:
+ if (!detect_s514(hw)) err = -ENODEV;
+ break;
+
+ default:
+ if (detect_s502a(port))
+ hw->type = SDLA_S502A;
+ else if (detect_s502e(port))
+ hw->type = SDLA_S502E;
+ else if (detect_s503(port))
+ hw->type = SDLA_S503;
+ else if (detect_s507(port))
+ hw->type = SDLA_S507;
+ else if (detect_s508(port))
+ hw->type = SDLA_S508;
+ else err = -ENODEV;
+ }
+ return err;
+}
+
+/*============================================================================
+ * Autoselect memory region.
+ * o try all available DMP address options from the top down until success.
+ */
+static int sdla_autodpm (sdlahw_t* hw)
+{
+ int i, err = -EINVAL;
+ unsigned* opt;
+
+ switch (hw->type) {
+ case SDLA_S502A:
+ opt = s502a_dpmbase_options;
+ break;
+
+ case SDLA_S502E:
+ case SDLA_S503:
+ case SDLA_S508:
+ opt = s508_dpmbase_options;
+ break;
+
+ case SDLA_S507:
+ opt = s507_dpmbase_options;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ /* Start testing from 8th position, address
+ * 0xC8000 from the 508 address table.
+ * We don't want to test A**** addresses, since
+ * they are usually used for Video */
+ for (i = 8; i <= opt[0] && err; i++) {
+ hw->dpmbase = phys_to_virt(opt[i]);
+ err = sdla_setdpm(hw);
+ }
+ return err;
+}
+
+/*============================================================================
+ * Set up adapter dual-port memory window.
+ * o shut down adapter
+ * o make sure that no physical memory exists in this region, i.e entire
+ * region reads 0xFF and is not writable when adapter is shut down.
+ * o initialize adapter hardware
+ * o make sure that region is usable with SDLA card, i.e. we can write to it
+ * when adapter is configured.
+ */
+static int sdla_setdpm (sdlahw_t* hw)
+{
+ int err;
+
+ /* Shut down card and verify memory region */
+ sdla_down(hw);
+ if (check_memregion(hw->dpmbase, hw->dpmsize))
+ return -EINVAL;
+
+ /* Initialize adapter and test on-board memory segment by segment.
+ * If memory size appears to be less than shared memory window size,
+ * assume that memory region is unusable.
+ */
+ err = sdla_init(hw);
+ if (err) return err;
+
+ if (sdla_memtest(hw) < hw->dpmsize) { /* less than window size */
+ sdla_down(hw);
+ return -EIO;
+ }
+ sdla_mapmem(hw, 0L); /* set window vector at bottom */
+ return 0;
+}
+
+/*============================================================================
+ * Load adapter from the memory image of the SDLA firmware module.
+ * o verify firmware integrity and compatibility
+ * o start adapter up
+ */
+static int sdla_load (sdlahw_t* hw, sfm_t* sfm, unsigned len)
+{
+
+ int i;
+
+ /* Verify firmware signature */
+ if (strcmp(sfm->signature, SFM_SIGNATURE)) {
+ printk(KERN_INFO "%s: not SDLA firmware!\n",
+ modname);
+ return -EINVAL;
+ }
+
+ /* Verify firmware module format version */
+ if (sfm->version != SFM_VERSION) {
+ printk(KERN_INFO
+ "%s: firmware format %u rejected! Expecting %u.\n",
+ modname, sfm->version, SFM_VERSION);
+ return -EINVAL;
+ }
+
+ /* Verify firmware module length and checksum */
+ if ((len - offsetof(sfm_t, image) != sfm->info.codesize) ||
+ (checksum((void*)&sfm->info,
+ sizeof(sfm_info_t) + sfm->info.codesize) != sfm->checksum)) {
+ printk(KERN_INFO "%s: firmware corrupted!\n", modname);
+ return -EINVAL;
+ }
+
+ /* Announce */
+ printk(KERN_INFO "%s: loading %s (ID=%u)...\n", modname,
+ (sfm->descr[0] != '\0') ? sfm->descr : "unknown firmware",
+ sfm->info.codeid);
+
+ if(hw->type == SDLA_S514)
+ printk(KERN_INFO "%s: loading S514 adapter, CPU %c\n",
+ modname, hw->S514_cpu_no[0]);
+
+ /* Scan through the list of compatible adapters and make sure our
+ * adapter type is listed.
+ */
+ for (i = 0;
+ (i < SFM_MAX_SDLA) && (sfm->info.adapter[i] != hw->type);
+ ++i);
+
+ if (i == SFM_MAX_SDLA) {
+ printk(KERN_INFO "%s: firmware is not compatible with S%u!\n",
+ modname, hw->type);
+ return -EINVAL;
+ }
+
+
+ /* Make sure there is enough on-board memory */
+ if (hw->memory < sfm->info.memsize) {
+ printk(KERN_INFO
+ "%s: firmware needs %lu bytes of on-board memory!\n",
+ modname, sfm->info.memsize);
+ return -EINVAL;
+ }
+
+ /* Move code onto adapter */
+ if (sdla_poke(hw, sfm->info.codeoffs, sfm->image, sfm->info.codesize)) {
+ printk(KERN_INFO "%s: failed to load code segment!\n",
+ modname);
+ return -EIO;
+ }
+
+ /* Prepare boot-time configuration data and kick-off CPU */
+ sdla_bootcfg(hw, &sfm->info);
+ if (sdla_start(hw, sfm->info.startoffs)) {
+ printk(KERN_INFO "%s: Damn... Adapter won't start!\n",
+ modname);
+ return -EIO;
+ }
+
+ /* position DPM window over the mailbox and enable interrupts */
+ if (sdla_mapmem(hw, sfm->info.winoffs) || sdla_inten(hw)) {
+ printk(KERN_INFO "%s: adapter hardware failure!\n",
+ modname);
+ return -EIO;
+ }
+ hw->fwid = sfm->info.codeid; /* set firmware ID */
+ return 0;
+}
+
+/*============================================================================
+ * Initialize SDLA hardware: setup memory window, IRQ, etc.
+ */
+static int sdla_init (sdlahw_t* hw)
+{
+ int i;
+
+ for (i = 0; i < SDLA_MAXIORANGE; ++i)
+ hw->regs[i] = 0;
+
+ switch (hw->type) {
+ case SDLA_S502A: return init_s502a(hw);
+ case SDLA_S502E: return init_s502e(hw);
+ case SDLA_S503: return init_s503(hw);
+ case SDLA_S507: return init_s507(hw);
+ case SDLA_S508: return init_s508(hw);
+ }
+ return -EINVAL;
+}
+
+/*============================================================================
+ * Test adapter on-board memory.
+ * o slide DPM window from the bottom up and test adapter memory segment by
+ * segment.
+ * Return adapter memory size.
+ */
+static unsigned long sdla_memtest (sdlahw_t* hw)
+{
+ unsigned long memsize;
+ unsigned winsize;
+
+ for (memsize = 0, winsize = hw->dpmsize;
+ !sdla_mapmem(hw, memsize) &&
+ (test_memregion(hw->dpmbase, winsize) == winsize)
+ ;
+ memsize += winsize)
+ ;
+ hw->memory = memsize;
+ return memsize;
+}
+
+/*============================================================================
+ * Prepare boot-time firmware configuration data.
+ * o position DPM window
+ * o initialize configuration data area
+ */
+static int sdla_bootcfg (sdlahw_t* hw, sfm_info_t* sfminfo)
+{
+ unsigned char* data;
+
+ if (!sfminfo->datasize) return 0; /* nothing to do */
+
+ if (sdla_mapmem(hw, sfminfo->dataoffs) != 0)
+ return -EIO;
+
+ if(hw->type == SDLA_S514)
+ data = (void*)(hw->dpmbase + sfminfo->dataoffs);
+ else
+ data = (void*)((u8 *)hw->dpmbase +
+ (sfminfo->dataoffs - hw->vector));
+
+ memset_io (data, 0, sfminfo->datasize);
+
+ writeb (make_config_byte(hw), &data[0x00]);
+
+ switch (sfminfo->codeid) {
+ case SFID_X25_502:
+ case SFID_X25_508:
+ writeb (3, &data[0x01]); /* T1 timer */
+ writeb (10, &data[0x03]); /* N2 */
+ writeb (7, &data[0x06]); /* HDLC window size */
+ writeb (1, &data[0x0B]); /* DTE */
+ writeb (2, &data[0x0C]); /* X.25 packet window size */
+ writew (128, &data[0x0D]); /* default X.25 data size */
+ writew (128, &data[0x0F]); /* maximum X.25 data size */
+ break;
+ }
+ return 0;
+}
+
+/*============================================================================
+ * Prepare configuration byte identifying adapter type and CPU clock rate.
+ */
+static unsigned char make_config_byte (sdlahw_t* hw)
+{
+ unsigned char byte = 0;
+
+ switch (hw->pclk) {
+ case 5000: byte = 0x01; break;
+ case 7200: byte = 0x02; break;
+ case 8000: byte = 0x03; break;
+ case 10000: byte = 0x04; break;
+ case 16000: byte = 0x05; break;
+ }
+
+ switch (hw->type) {
+ case SDLA_S502E: byte |= 0x80; break;
+ case SDLA_S503: byte |= 0x40; break;
+ }
+ return byte;
+}
+
+/*============================================================================
+ * Start adapter's CPU.
+ * o calculate a pointer to adapter's cold boot entry point
+ * o position DPM window
+ * o place boot instruction (jp addr) at cold boot entry point
+ * o start CPU
+ */
+static int sdla_start (sdlahw_t* hw, unsigned addr)
+{
+ unsigned port = hw->port;
+ unsigned char *bootp;
+ int err, tmp, i;
+
+ if (!port && (hw->type != SDLA_S514)) return -EFAULT;
+
+ switch (hw->type) {
+ case SDLA_S502A:
+ bootp = hw->dpmbase;
+ bootp += 0x66;
+ break;
+
+ case SDLA_S502E:
+ case SDLA_S503:
+ case SDLA_S507:
+ case SDLA_S508:
+ case SDLA_S514:
+ bootp = hw->dpmbase;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ err = sdla_mapmem(hw, 0);
+ if (err) return err;
+
+ writeb (0xC3, bootp); /* Z80: 'jp' opcode */
+ bootp ++;
+ writew (addr, bootp);
+
+ switch (hw->type) {
+ case SDLA_S502A:
+ _OUTB(port, 0x10); /* issue NMI to CPU */
+ hw->regs[0] = 0x10;
+ break;
+
+ case SDLA_S502E:
+ _OUTB(port + 3, 0x01); /* start CPU */
+ hw->regs[3] = 0x01;
+ for (i = 0; i < SDLA_IODELAY; ++i);
+ if (_INB(port) & 0x01) { /* verify */
+ /*
+ * Enabling CPU changes functionality of the
+ * control register, so we have to reset its
+ * mirror.
+ */
+ _OUTB(port, 0); /* disable interrupts */
+ hw->regs[0] = 0;
+ }
+ else return -EIO;
+ break;
+
+ case SDLA_S503:
+ tmp = hw->regs[0] | 0x09; /* set bits 0 and 3 */
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp; /* update mirror */
+ for (i = 0; i < SDLA_IODELAY; ++i);
+ if (!(_INB(port) & 0x01)) /* verify */
+ return -EIO;
+ break;
+
+ case SDLA_S507:
+ tmp = hw->regs[0] | 0x02;
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp; /* update mirror */
+ for (i = 0; i < SDLA_IODELAY; ++i);
+ if (!(_INB(port) & 0x04)) /* verify */
+ return -EIO;
+ break;
+
+ case SDLA_S508:
+ tmp = hw->regs[0] | 0x02;
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp; /* update mirror */
+ for (i = 0; i < SDLA_IODELAY; ++i);
+ if (!(_INB(port + 1) & 0x02)) /* verify */
+ return -EIO;
+ break;
+
+ case SDLA_S514:
+ writeb (S514_CPU_START, hw->vector);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*============================================================================
+ * Initialize S502A adapter.
+ */
+static int init_s502a (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+ int tmp, i;
+
+ if (!detect_s502a(port))
+ return -ENODEV;
+
+ hw->regs[0] = 0x08;
+ hw->regs[1] = 0xFF;
+
+ /* Verify configuration options */
+ i = get_option_index(s502a_dpmbase_options, virt_to_phys(hw->dpmbase));
+ if (i == 0)
+ return -EINVAL;
+
+ tmp = s502a_hmcr[i - 1];
+ switch (hw->dpmsize) {
+ case 0x2000:
+ tmp |= 0x01;
+ break;
+
+ case 0x10000L:
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ /* Setup dual-port memory window (this also enables memory access) */
+ _OUTB(port + 1, tmp);
+ hw->regs[1] = tmp;
+ hw->regs[0] = 0x08;
+ return 0;
+}
+
+/*============================================================================
+ * Initialize S502E adapter.
+ */
+static int init_s502e (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+ int tmp, i;
+
+ if (!detect_s502e(port))
+ return -ENODEV;
+
+ /* Verify configuration options */
+ i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase));
+ if (i == 0)
+ return -EINVAL;
+
+ tmp = s502e_hmcr[i - 1];
+ switch (hw->dpmsize) {
+ case 0x2000:
+ tmp |= 0x01;
+ break;
+
+ case 0x10000L:
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ /* Setup dual-port memory window */
+ _OUTB(port + 1, tmp);
+ hw->regs[1] = tmp;
+
+ /* Enable memory access */
+ _OUTB(port, 0x02);
+ hw->regs[0] = 0x02;
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ return (_INB(port) & 0x02) ? 0 : -EIO;
+}
+
+/*============================================================================
+ * Initialize S503 adapter.
+ * ---------------------------------------------------------------------------
+ */
+static int init_s503 (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+ int tmp, i;
+
+ if (!detect_s503(port))
+ return -ENODEV;
+
+ /* Verify configuration options */
+ i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase));
+ if (i == 0)
+ return -EINVAL;
+
+ tmp = s502e_hmcr[i - 1];
+ switch (hw->dpmsize) {
+ case 0x2000:
+ tmp |= 0x01;
+ break;
+
+ case 0x10000L:
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ /* Setup dual-port memory window */
+ _OUTB(port + 1, tmp);
+ hw->regs[1] = tmp;
+
+ /* Enable memory access */
+ _OUTB(port, 0x02);
+ hw->regs[0] = 0x02; /* update mirror */
+ return 0;
+}
+
+/*============================================================================
+ * Initialize S507 adapter.
+ */
+static int init_s507 (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+ int tmp, i;
+
+ if (!detect_s507(port))
+ return -ENODEV;
+
+ /* Verify configuration options */
+ i = get_option_index(s507_dpmbase_options, virt_to_phys(hw->dpmbase));
+ if (i == 0)
+ return -EINVAL;
+
+ tmp = s507_hmcr[i - 1];
+ switch (hw->dpmsize) {
+ case 0x2000:
+ tmp |= 0x01;
+ break;
+
+ case 0x10000L:
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ /* Enable adapter's logic */
+ _OUTB(port, 0x01);
+ hw->regs[0] = 0x01;
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (!(_INB(port) & 0x20))
+ return -EIO;
+
+ /* Setup dual-port memory window */
+ _OUTB(port + 1, tmp);
+ hw->regs[1] = tmp;
+
+ /* Enable memory access */
+ tmp = hw->regs[0] | 0x04;
+ if (hw->irq) {
+ i = get_option_index(s508_irq_options, hw->irq);
+ if (i) tmp |= s507_irqmask[i - 1];
+ }
+ _OUTB(port, tmp);
+ hw->regs[0] = tmp; /* update mirror */
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ return (_INB(port) & 0x08) ? 0 : -EIO;
+}
+
+/*============================================================================
+ * Initialize S508 adapter.
+ */
+static int init_s508 (sdlahw_t* hw)
+{
+ unsigned port = hw->port;
+ int tmp, i;
+
+ if (!detect_s508(port))
+ return -ENODEV;
+
+ /* Verify configuration options */
+ i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase));
+ if (i == 0)
+ return -EINVAL;
+
+ /* Setup memory configuration */
+ tmp = s508_hmcr[i - 1];
+ _OUTB(port + 1, tmp);
+ hw->regs[1] = tmp;
+
+ /* Enable memory access */
+ _OUTB(port, 0x04);
+ hw->regs[0] = 0x04; /* update mirror */
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ return (_INB(port + 1) & 0x04) ? 0 : -EIO;
+}
+
+/*============================================================================
+ * Detect S502A adapter.
+ * Following tests are used to detect S502A adapter:
+ * 1. All registers other than status (BASE) should read 0xFF
+ * 2. After writing 00001000b to control register, status register should
+ * read 01000000b.
+ * 3. After writing 0 to control register, status register should still
+ * read 01000000b.
+ * 4. After writing 00000100b to control register, status register should
+ * read 01000100b.
+ * Return 1 if detected o.k. or 0 if failed.
+ * Note: This test is destructive! Adapter will be left in shutdown
+ * state after the test.
+ */
+static int detect_s502a (int port)
+{
+ int i, j;
+
+ if (!get_option_index(s502_port_options, port))
+ return 0;
+
+ for (j = 1; j < SDLA_MAXIORANGE; ++j) {
+ if (_INB(port + j) != 0xFF)
+ return 0;
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ }
+
+ _OUTB(port, 0x08); /* halt CPU */
+ _OUTB(port, 0x08);
+ _OUTB(port, 0x08);
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (_INB(port) != 0x40)
+ return 0;
+ _OUTB(port, 0x00);
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (_INB(port) != 0x40)
+ return 0;
+ _OUTB(port, 0x04);
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (_INB(port) != 0x44)
+ return 0;
+
+ /* Reset adapter */
+ _OUTB(port, 0x08);
+ _OUTB(port, 0x08);
+ _OUTB(port, 0x08);
+ _OUTB(port + 1, 0xFF);
+ return 1;
+}
+
+/*============================================================================
+ * Detect S502E adapter.
+ * Following tests are used to verify adapter presence:
+ * 1. All registers other than status (BASE) should read 0xFF.
+ * 2. After writing 0 to CPU control register (BASE+3), status register
+ * (BASE) should read 11111000b.
+ * 3. After writing 00000100b to port BASE (set bit 2), status register
+ * (BASE) should read 11111100b.
+ * Return 1 if detected o.k. or 0 if failed.
+ * Note: This test is destructive! Adapter will be left in shutdown
+ * state after the test.
+ */
+static int detect_s502e (int port)
+{
+ int i, j;
+
+ if (!get_option_index(s502_port_options, port))
+ return 0;
+ for (j = 1; j < SDLA_MAXIORANGE; ++j) {
+ if (_INB(port + j) != 0xFF)
+ return 0;
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ }
+
+ _OUTB(port + 3, 0); /* CPU control reg. */
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (_INB(port) != 0xF8) /* read status */
+ return 0;
+ _OUTB(port, 0x04); /* set bit 2 */
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (_INB(port) != 0xFC) /* verify */
+ return 0;
+
+ /* Reset adapter */
+ _OUTB(port, 0);
+ return 1;
+}
+
+/*============================================================================
+ * Detect s503 adapter.
+ * Following tests are used to verify adapter presence:
+ * 1. All registers other than status (BASE) should read 0xFF.
+ * 2. After writing 0 to control register (BASE), status register (BASE)
+ * should read 11110000b.
+ * 3. After writing 00000100b (set bit 2) to control register (BASE),
+ * status register should read 11110010b.
+ * Return 1 if detected o.k. or 0 if failed.
+ * Note: This test is destructive! Adapter will be left in shutdown
+ * state after the test.
+ */
+static int detect_s503 (int port)
+{
+ int i, j;
+
+ if (!get_option_index(s503_port_options, port))
+ return 0;
+ for (j = 1; j < SDLA_MAXIORANGE; ++j) {
+ if (_INB(port + j) != 0xFF)
+ return 0;
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ }
+
+ _OUTB(port, 0); /* reset control reg.*/
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (_INB(port) != 0xF0) /* read status */
+ return 0;
+ _OUTB(port, 0x04); /* set bit 2 */
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if (_INB(port) != 0xF2) /* verify */
+ return 0;
+
+ /* Reset adapter */
+ _OUTB(port, 0);
+ return 1;
+}
+
+/*============================================================================
+ * Detect s507 adapter.
+ * Following tests are used to detect s507 adapter:
+ * 1. All ports should read the same value.
+ * 2. After writing 0x00 to control register, status register should read
+ * ?011000?b.
+ * 3. After writing 0x01 to control register, status register should read
+ * ?011001?b.
+ * Return 1 if detected o.k. or 0 if failed.
+ * Note: This test is destructive! Adapter will be left in shutdown
+ * state after the test.
+ */
+static int detect_s507 (int port)
+{
+ int tmp, i, j;
+
+ if (!get_option_index(s508_port_options, port))
+ return 0;
+ tmp = _INB(port);
+ for (j = 1; j < S507_IORANGE; ++j) {
+ if (_INB(port + j) != tmp)
+ return 0;
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ }
+
+ _OUTB(port, 0x00);
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if ((_INB(port) & 0x7E) != 0x30)
+ return 0;
+ _OUTB(port, 0x01);
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if ((_INB(port) & 0x7E) != 0x32)
+ return 0;
+
+ /* Reset adapter */
+ _OUTB(port, 0x00);
+ return 1;
+}
+
+/*============================================================================
+ * Detect s508 adapter.
+ * Following tests are used to detect s508 adapter:
+ * 1. After writing 0x00 to control register, status register should read
+ * ??000000b.
+ * 2. After writing 0x10 to control register, status register should read
+ * ??010000b
+ * Return 1 if detected o.k. or 0 if failed.
+ * Note: This test is destructive! Adapter will be left in shutdown
+ * state after the test.
+ */
+static int detect_s508 (int port)
+{
+ int i;
+
+ if (!get_option_index(s508_port_options, port))
+ return 0;
+ _OUTB(port, 0x00);
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if ((_INB(port + 1) & 0x3F) != 0x00)
+ return 0;
+ _OUTB(port, 0x10);
+ for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
+ if ((_INB(port + 1) & 0x3F) != 0x10)
+ return 0;
+
+ /* Reset adapter */
+ _OUTB(port, 0x00);
+ return 1;
+}
+
+/*============================================================================
+ * Detect s514 PCI adapter.
+ * Return 1 if detected o.k. or 0 if failed.
+ * Note: This test is destructive! Adapter will be left in shutdown
+ * state after the test.
+ */
+static int detect_s514 (sdlahw_t* hw)
+{
+ unsigned char CPU_no, slot_no, auto_slot_cfg;
+ int number_S514_cards = 0;
+ u32 S514_mem_base_addr = 0;
+ u32 ut_u32;
+ struct pci_dev *pci_dev;
+
+
+#ifndef CONFIG_PCI
+ printk(KERN_INFO "%s: Linux not compiled for PCI usage!\n", modname);
+ return 0;
+#endif
+
+ /*
+ The 'setup()' procedure in 'sdlamain.c' passes the CPU number and the
+ slot number defined in 'router.conf' via the 'port' definition.
+ */
+ CPU_no = hw->S514_cpu_no[0];
+ slot_no = hw->S514_slot_no;
+ auto_slot_cfg = hw->auto_pci_cfg;
+
+ if (auto_slot_cfg){
+ printk(KERN_INFO "%s: srch... S514 card, CPU %c, Slot=Auto\n",
+ modname, CPU_no);
+
+ }else{
+ printk(KERN_INFO "%s: srch... S514 card, CPU %c, Slot #%d\n",
+ modname, CPU_no, slot_no);
+ }
+
+ /* check to see that CPU A or B has been selected in 'router.conf' */
+ switch(CPU_no) {
+ case S514_CPU_A:
+ case S514_CPU_B:
+ break;
+
+ default:
+ printk(KERN_INFO "%s: S514 CPU definition invalid.\n",
+ modname);
+ printk(KERN_INFO "Must be 'A' or 'B'\n");
+ return 0;
+ }
+
+ number_S514_cards = find_s514_adapter(hw, 0);
+ if(!number_S514_cards)
+ return 0;
+
+ /* we are using a single S514 adapter with a slot of 0 so re-read the */
+ /* location of this adapter */
+ if((number_S514_cards == 1) && auto_slot_cfg) {
+ number_S514_cards = find_s514_adapter(hw, 1);
+ if(!number_S514_cards) {
+ printk(KERN_INFO "%s: Error finding PCI card\n",
+ modname);
+ return 0;
+ }
+ }
+
+ pci_dev = hw->pci_dev;
+ /* read the physical memory base address */
+ S514_mem_base_addr = (CPU_no == S514_CPU_A) ?
+ (pci_dev->resource[1].start) :
+ (pci_dev->resource[2].start);
+
+ printk(KERN_INFO "%s: S514 PCI memory at 0x%X\n",
+ modname, S514_mem_base_addr);
+ if(!S514_mem_base_addr) {
+ if(CPU_no == S514_CPU_B)
+ printk(KERN_INFO "%s: CPU #B not present on the card\n", modname);
+ else
+ printk(KERN_INFO "%s: No PCI memory allocated to card\n", modname);
+ return 0;
+ }
+
+ /* enable the PCI memory */
+ pci_read_config_dword(pci_dev,
+ (CPU_no == S514_CPU_A) ? PCI_MAP0_DWORD : PCI_MAP1_DWORD,
+ &ut_u32);
+ pci_write_config_dword(pci_dev,
+ (CPU_no == S514_CPU_A) ? PCI_MAP0_DWORD : PCI_MAP1_DWORD,
+ (ut_u32 | PCI_MEMORY_ENABLE));
+
+ /* check the IRQ allocated and enable IRQ usage */
+ if(!(hw->irq = pci_dev->irq)) {
+ printk(KERN_INFO "%s: IRQ not allocated to S514 adapter\n",
+ modname);
+ return 0;
+ }
+
+ /* BUG FIX : Mar 6 2000
+ * On a initial loading of the card, we must check
+ * and clear PCI interrupt bits, due to a reset
+ * problem on some other boards. i.e. An interrupt
+ * might be pending, even after system bootup,
+ * in which case, when starting wanrouter the machine
+ * would crash.
+ */
+ if (init_pci_slot(hw))
+ return 0;
+
+ pci_read_config_dword(pci_dev, PCI_INT_CONFIG, &ut_u32);
+ ut_u32 |= (CPU_no == S514_CPU_A) ?
+ PCI_ENABLE_IRQ_CPU_A : PCI_ENABLE_IRQ_CPU_B;
+ pci_write_config_dword(pci_dev, PCI_INT_CONFIG, ut_u32);
+
+ printk(KERN_INFO "%s: IRQ %d allocated to the S514 card\n",
+ modname, hw->irq);
+
+ /* map the physical PCI memory to virtual memory */
+ (void *)hw->dpmbase = ioremap((unsigned long)S514_mem_base_addr,
+ (unsigned long)MAX_SIZEOF_S514_MEMORY);
+ /* map the physical control register memory to virtual memory */
+ hw->vector = (unsigned long)ioremap(
+ (unsigned long)(S514_mem_base_addr + S514_CTRL_REG_BYTE),
+ (unsigned long)16);
+
+ if(!hw->dpmbase || !hw->vector) {
+ printk(KERN_INFO "%s: PCI virtual memory allocation failed\n",
+ modname);
+ return 0;
+ }
+
+ /* halt the adapter */
+ writeb (S514_CPU_HALT, hw->vector);
+
+ return 1;
+}
+
+/*============================================================================
+ * Find the S514 PCI adapter in the PCI bus.
+ * Return the number of S514 adapters found (0 if no adapter found).
+ */
+static int find_s514_adapter(sdlahw_t* hw, char find_first_S514_card)
+{
+ unsigned char slot_no;
+ int number_S514_cards = 0;
+ char S514_found_in_slot = 0;
+ u16 PCI_subsys_vendor;
+
+ struct pci_dev *pci_dev = NULL;
+
+ slot_no = hw->S514_slot_no;
+
+ while ((pci_dev = pci_find_device(V3_VENDOR_ID, V3_DEVICE_ID, pci_dev))
+ != NULL) {
+
+ pci_read_config_word(pci_dev, PCI_SUBSYS_VENDOR_WORD,
+ &PCI_subsys_vendor);
+
+ if(PCI_subsys_vendor != SANGOMA_SUBSYS_VENDOR)
+ continue;
+
+ hw->pci_dev = pci_dev;
+
+ if(find_first_S514_card)
+ return(1);
+
+ number_S514_cards ++;
+
+ printk(KERN_INFO
+ "%s: S514 card found, slot #%d (devfn 0x%X)\n",
+ modname, ((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK),
+ pci_dev->devfn);
+
+ if (hw->auto_pci_cfg){
+ hw->S514_slot_no = ((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK);
+ slot_no = hw->S514_slot_no;
+
+ }else if (((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK) == slot_no){
+ S514_found_in_slot = 1;
+ break;
+ }
+ }
+
+ /* if no S514 adapter has been found, then exit */
+ if (!number_S514_cards) {
+ printk(KERN_INFO "%s: Error, no S514 adapters found\n", modname);
+ return 0;
+ }
+ /* if more than one S514 card has been found, then the user must have */ /* defined a slot number so that the correct adapter is used */
+ else if ((number_S514_cards > 1) && hw->auto_pci_cfg) {
+ printk(KERN_INFO "%s: Error, PCI Slot autodetect Failed! \n"
+ "%s: More than one S514 adapter found.\n"
+ "%s: Disable the Autodetect feature and supply\n"
+ "%s: the PCISLOT numbers for each card.\n",
+ modname,modname,modname,modname);
+ return 0;
+ }
+ /* if the user has specified a slot number and the S514 adapter has */
+ /* not been found in that slot, then exit */
+ else if (!hw->auto_pci_cfg && !S514_found_in_slot) {
+ printk(KERN_INFO
+ "%s: Error, S514 card not found in specified slot #%d\n",
+ modname, slot_no);
+ return 0;
+ }
+
+ return (number_S514_cards);
+}
+
+
+
+/******* Miscellaneous ******************************************************/
+
+/*============================================================================
+ * Calibrate SDLA memory access delay.
+ * Count number of idle loops made within 1 second and then calculate the
+ * number of loops that should be made to achive desired delay.
+ */
+static int calibrate_delay (int mks)
+{
+ unsigned int delay;
+ unsigned long stop;
+
+ for (delay = 0, stop = SYSTEM_TICK + HZ; SYSTEM_TICK < stop; ++delay);
+ return (delay/(1000000L/mks) + 1);
+}
+
+/*============================================================================
+ * Get option's index into the options list.
+ * Return option's index (1 .. N) or zero if option is invalid.
+ */
+static int get_option_index (unsigned* optlist, unsigned optval)
+{
+ int i;
+
+ for (i = 1; i <= optlist[0]; ++i)
+ if ( optlist[i] == optval)
+ return i;
+ return 0;
+}
+
+/*============================================================================
+ * Check memory region to see if it's available.
+ * Return: 0 ok.
+ */
+static unsigned check_memregion (void* ptr, unsigned len)
+{
+ volatile unsigned char* p = ptr;
+
+ for (; len && (readb (p) == 0xFF); --len, ++p) {
+ writeb (0, p); /* attempt to write 0 */
+ if (readb(p) != 0xFF) { /* still has to read 0xFF */
+ writeb (0xFF, p);/* restore original value */
+ break; /* not good */
+ }
+ }
+
+ return len;
+}
+
+/*============================================================================
+ * Test memory region.
+ * Return: size of the region that passed the test.
+ * Note: Region size must be multiple of 2 !
+ */
+static unsigned test_memregion (void* ptr, unsigned len)
+{
+ volatile unsigned short* w_ptr;
+ unsigned len_w = len >> 1; /* region len in words */
+ unsigned i;
+
+ for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
+ writew (0xAA55, w_ptr);
+
+ for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
+ if (readw (w_ptr) != 0xAA55) {
+ len_w = i;
+ break;
+ }
+
+ for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
+ writew (0x55AA, w_ptr);
+
+ for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
+ if (readw(w_ptr) != 0x55AA) {
+ len_w = i;
+ break;
+ }
+
+ for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
+ writew (0, w_ptr);
+
+ return len_w << 1;
+}
+
+/*============================================================================
+ * Calculate 16-bit CRC using CCITT polynomial.
+ */
+static unsigned short checksum (unsigned char* buf, unsigned len)
+{
+ unsigned short crc = 0;
+ unsigned mask, flag;
+
+ for (; len; --len, ++buf) {
+ for (mask = 0x80; mask; mask >>= 1) {
+ flag = (crc & 0x8000);
+ crc <<= 1;
+ crc |= ((*buf & mask) ? 1 : 0);
+ if (flag) crc ^= 0x1021;
+ }
+ }
+ return crc;
+}
+
+static int init_pci_slot(sdlahw_t *hw)
+{
+
+ u32 int_status;
+ int volatile found=0;
+ int i=0;
+
+ /* Check if this is a very first load for a specific
+ * pci card. If it is, clear the interrput bits, and
+ * set the flag indicating that this card was initialized.
+ */
+
+ for (i=0; (i<MAX_S514_CARDS) && !found; i++){
+ if (pci_slot_ar[i] == hw->S514_slot_no){
+ found=1;
+ break;
+ }
+ if (pci_slot_ar[i] == 0xFF){
+ break;
+ }
+ }
+
+ if (!found){
+ read_S514_int_stat(hw,&int_status);
+ S514_intack(hw,int_status);
+ if (i == MAX_S514_CARDS){
+ printk(KERN_INFO "%s: Critical Error !!!\n",modname);
+ printk(KERN_INFO
+ "%s: Number of Sangoma PCI cards exceeded maximum limit.\n",
+ modname);
+ printk(KERN_INFO "Please contact Sangoma Technologies\n");
+ return 1;
+ }
+ pci_slot_ar[i] = hw->S514_slot_no;
+ }
+ return 0;
+}
+
+static int pci_probe(sdlahw_t *hw)
+{
+
+ unsigned char slot_no;
+ int number_S514_cards = 0;
+ u16 PCI_subsys_vendor;
+ u16 PCI_card_type;
+
+ struct pci_dev *pci_dev = NULL;
+ struct pci_bus *bus = NULL;
+
+ slot_no = 0;
+
+ while ((pci_dev = pci_find_device(V3_VENDOR_ID, V3_DEVICE_ID, pci_dev))
+ != NULL) {
+
+ pci_read_config_word(pci_dev, PCI_SUBSYS_VENDOR_WORD,
+ &PCI_subsys_vendor);
+
+ if(PCI_subsys_vendor != SANGOMA_SUBSYS_VENDOR)
+ continue;
+
+ pci_read_config_word(pci_dev, PCI_CARD_TYPE,
+ &PCI_card_type);
+
+ bus = pci_dev->bus;
+
+ /* A dual cpu card can support up to 4 physical connections,
+ * where a single cpu card can support up to 2 physical
+ * connections. The FT1 card can only support a single
+ * connection, however we cannot distinguish between a Single
+ * CPU card and an FT1 card. */
+ if (PCI_card_type == S514_DUAL_CPU){
+ number_S514_cards += 4;
+ printk(KERN_INFO
+ "wanpipe: S514-PCI card found, cpu(s) 2, bus #%d, slot #%d, irq #%d\n",
+ bus->number,((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK),
+ pci_dev->irq);
+ }else{
+ number_S514_cards += 2;
+ printk(KERN_INFO
+ "wanpipe: S514-PCI card found, cpu(s) 1, bus #%d, slot #%d, irq #%d\n",
+ bus->number,((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK),
+ pci_dev->irq);
+ }
+ }
+
+ return number_S514_cards;
+
+}
+
+
+
+EXPORT_SYMBOL(wanpipe_hw_probe);
+
+unsigned wanpipe_hw_probe(void)
+{
+ sdlahw_t hw;
+ unsigned* opt = s508_port_options;
+ unsigned cardno=0;
+ int i;
+
+ memset(&hw, 0, sizeof(hw));
+
+ for (i = 1; i <= opt[0]; i++) {
+ if (detect_s508(opt[i])){
+ /* S508 card can support up to two physical links */
+ cardno+=2;
+ printk(KERN_INFO "wanpipe: S508-ISA card found, port 0x%x\n",opt[i]);
+ }
+ }
+
+ #ifdef CONFIG_PCI
+ hw.S514_slot_no = 0;
+ cardno += pci_probe(&hw);
+ #else
+ printk(KERN_INFO "wanpipe: Warning, Kernel not compiled for PCI support!\n");
+ printk(KERN_INFO "wanpipe: PCI Hardware Probe Failed!\n");
+ #endif
+
+ return cardno;
+}
+
+/****** End *****************************************************************/