Commit 054f5b0a authored by Jiri Slaby's avatar Jiri Slaby Committed by Linus Torvalds

Char: cyclades, add firmware loading

cyclades, add firmware loading
Signed-off-by: default avatarJiri Slaby <jirislaby@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent cf3a386c
...@@ -646,6 +646,7 @@ ...@@ -646,6 +646,7 @@
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/spinlock.h> #include <linux/spinlock.h>
#include <linux/bitops.h> #include <linux/bitops.h>
#include <linux/firmware.h>
#include <asm/system.h> #include <asm/system.h>
#include <asm/io.h> #include <asm/io.h>
...@@ -680,6 +681,44 @@ static void cy_send_xchar(struct tty_struct *tty, char ch); ...@@ -680,6 +681,44 @@ static void cy_send_xchar(struct tty_struct *tty, char ch);
#define STD_COM_FLAGS (0) #define STD_COM_FLAGS (0)
/* firmware stuff */
#define ZL_MAX_BLOCKS 16
#define DRIVER_VERSION 0x02010203
#define RAM_SIZE 0x80000
#define Z_FPGA_LOADED(X) ((readl(&(X)->init_ctrl) & (1<<17)) != 0)
enum zblock_type {
ZBLOCK_PRG = 0,
ZBLOCK_FPGA = 1
};
struct zfile_header {
char name[64];
char date[32];
char aux[32];
u32 n_config;
u32 config_offset;
u32 n_blocks;
u32 block_offset;
u32 reserved[9];
} __attribute__ ((packed));
struct zfile_config {
char name[64];
u32 mailbox;
u32 function;
u32 n_blocks;
u32 block_list[ZL_MAX_BLOCKS];
} __attribute__ ((packed));
struct zfile_block {
u32 type;
u32 file_offset;
u32 ram_offset;
u32 size;
} __attribute__ ((packed));
static struct tty_driver *cy_serial_driver; static struct tty_driver *cy_serial_driver;
#ifdef CONFIG_ISA #ifdef CONFIG_ISA
...@@ -4735,17 +4774,295 @@ static int __init cy_detect_isa(void) ...@@ -4735,17 +4774,295 @@ static int __init cy_detect_isa(void)
} /* cy_detect_isa */ } /* cy_detect_isa */
#ifdef CONFIG_PCI #ifdef CONFIG_PCI
static void __devinit plx_init(void __iomem * addr, __u32 initctl) static inline int __devinit cyc_isfwstr(const char *str, unsigned int size)
{
unsigned int a;
for (a = 0; a < size && *str; a++, str++)
if (*str & 0x80)
return -EINVAL;
for (; a < size; a++, str++)
if (*str)
return -EINVAL;
return 0;
}
static inline void __devinit cyz_fpga_copy(void __iomem *fpga, u8 *data,
unsigned int size)
{
for (; size > 0; size--) {
cy_writel(fpga, *data++);
udelay(10);
}
}
static void __devinit plx_init(struct pci_dev *pdev, int irq,
struct RUNTIME_9060 __iomem *addr)
{ {
/* Reset PLX */ /* Reset PLX */
cy_writel(addr + initctl, readl(addr + initctl) | 0x40000000); cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000);
udelay(100L); udelay(100L);
cy_writel(addr + initctl, readl(addr + initctl) & ~0x40000000); cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000);
/* Reload Config. Registers from EEPROM */ /* Reload Config. Registers from EEPROM */
cy_writel(addr + initctl, readl(addr + initctl) | 0x20000000); cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000);
udelay(100L); udelay(100L);
cy_writel(addr + initctl, readl(addr + initctl) & ~0x20000000); cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000);
/* For some yet unknown reason, once the PLX9060 reloads the EEPROM,
* the IRQ is lost and, thus, we have to re-write it to the PCI config.
* registers. This will remain here until we find a permanent fix.
*/
pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
}
static int __devinit __cyz_load_fw(const struct firmware *fw,
const char *name, const u32 mailbox, void __iomem *base,
void __iomem *fpga)
{
void *ptr = fw->data;
struct zfile_header *h = ptr;
struct zfile_config *c, *cs;
struct zfile_block *b, *bs;
unsigned int a, tmp, len = fw->size;
#define BAD_FW KERN_ERR "Bad firmware: "
if (len < sizeof(*h)) {
printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h));
return -EINVAL;
}
cs = ptr + h->config_offset;
bs = ptr + h->block_offset;
if ((void *)(cs + h->n_config) > ptr + len ||
(void *)(bs + h->n_blocks) > ptr + len) {
printk(BAD_FW "too short");
return -EINVAL;
}
if (cyc_isfwstr(h->name, sizeof(h->name)) ||
cyc_isfwstr(h->date, sizeof(h->date))) {
printk(BAD_FW "bad formatted header string\n");
return -EINVAL;
}
if (strncmp(name, h->name, sizeof(h->name))) {
printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name);
return -EINVAL;
}
tmp = 0;
for (c = cs; c < cs + h->n_config; c++) {
for (a = 0; a < c->n_blocks; a++)
if (c->block_list[a] > h->n_blocks) {
printk(BAD_FW "bad block ref number in cfgs\n");
return -EINVAL;
}
if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */
tmp++;
}
if (!tmp) {
printk(BAD_FW "nothing appropriate\n");
return -EINVAL;
}
for (b = bs; b < bs + h->n_blocks; b++)
if (b->file_offset + b->size > len) {
printk(BAD_FW "bad block data offset\n");
return -EINVAL;
}
/* everything is OK, let's seek'n'load it */
for (c = cs; c < cs + h->n_config; c++)
if (c->mailbox == mailbox && c->function == 0)
break;
for (a = 0; a < c->n_blocks; a++) {
b = &bs[c->block_list[a]];
if (b->type == ZBLOCK_FPGA) {
if (fpga != NULL)
cyz_fpga_copy(fpga, ptr + b->file_offset,
b->size);
} else {
if (base != NULL)
memcpy_toio(base + b->ram_offset,
ptr + b->file_offset, b->size);
}
}
#undef BAD_FW
return 0;
}
static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr,
struct RUNTIME_9060 __iomem *ctl_addr, int irq)
{
const struct firmware *fw;
struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS;
struct CUSTOM_REG __iomem *cust = base_addr;
struct ZFW_CTRL __iomem *pt_zfwctrl;
u8 *tmp;
u32 mailbox, status;
unsigned int i;
int retval;
retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev);
if (retval) {
dev_err(&pdev->dev, "can't get firmware\n");
goto err;
}
/* Check whether the firmware is already loaded and running. If
positive, skip this board */
if (Z_FPGA_LOADED(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) {
u32 cntval = readl(base_addr + 0x190);
udelay(100);
if (cntval != readl(base_addr + 0x190)) {
/* FW counter is working, FW is running */
dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. "
"Skipping board.\n");
retval = 0;
goto err_rel;
}
}
/* start boot */
cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) &
~0x00030800UL);
mailbox = readl(&ctl_addr->mail_box_0);
if (mailbox == 0 || Z_FPGA_LOADED(ctl_addr)) {
/* stops CPU and set window to beginning of RAM */
cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
cy_writel(&cust->cpu_stop, 0);
cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
udelay(100);
}
plx_init(pdev, irq, ctl_addr);
if (mailbox != 0) {
/* load FPGA */
retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL,
base_addr);
if (retval)
goto err_rel;
if (!Z_FPGA_LOADED(ctl_addr)) {
dev_err(&pdev->dev, "fw upload successful, but fw is "
"not loaded\n");
goto err_rel;
}
}
/* stops CPU and set window to beginning of RAM */
cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
cy_writel(&cust->cpu_stop, 0);
cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
udelay(100);
/* clear memory */
for (tmp = base_addr; (void *)tmp < base_addr + RAM_SIZE; tmp++)
cy_writeb(tmp, 255);
if (mailbox != 0) {
/* set window to last 512K of RAM */
cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE);
//sleep(1);
for (tmp = base_addr; (void *)tmp < base_addr + RAM_SIZE; tmp++)
cy_writeb(tmp, 255);
/* set window to beginning of RAM */
cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
//sleep(1);
}
retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL);
release_firmware(fw);
if (retval)
goto err;
/* finish boot and start boards */
cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
cy_writel(&cust->cpu_start, 0);
cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
i = 0;
while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40)
msleep(100);
if (status != ZFIRM_ID) {
if (status == ZFIRM_HLT) {
dev_err(&pdev->dev, "you need an external power supply "
"for this number of ports. Firmware halted and "
"board reset.\n");
retval = -EIO;
goto err;
}
dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting "
"some more time\n", status);
while ((status = readl(&fid->signature)) != ZFIRM_ID &&
i++ < 200)
msleep(100);
if (status != ZFIRM_ID) {
dev_err(&pdev->dev, "Board not started in 20 seconds! "
"Giving up. (fid->signature = 0x%x)\n",
status);
dev_info(&pdev->dev, "*** Warning ***: if you are "
"upgrading the FW, please power cycle the "
"system before loading the new FW to the "
"Cyclades-Z.\n");
if (Z_FPGA_LOADED(ctl_addr))
plx_init(pdev, irq, ctl_addr);
retval = -EIO;
goto err;
}
dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n",
i / 10);
}
pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr);
dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n",
base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr),
base_addr + readl(&fid->zfwctrl_addr));
dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n",
readl(&pt_zfwctrl->board_ctrl.fw_version),
readl(&pt_zfwctrl->board_ctrl.n_channel));
if (readl(&pt_zfwctrl->board_ctrl.n_channel) == 0) {
dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please "
"check the connection between the Z host card and the "
"serial expanders.\n");
if (Z_FPGA_LOADED(ctl_addr))
plx_init(pdev, irq, ctl_addr);
dev_info(&pdev->dev, "Null number of ports detected. Board "
"reset.\n");
retval = 0;
goto err;
}
cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX);
cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION);
/*
Early firmware failed to start looking for commands.
This enables firmware interrupts for those commands.
*/
cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) |
(1 << 17));
cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) |
0x00030800UL);
plx_init(pdev, irq, ctl_addr);
return 0;
err_rel:
release_firmware(fw);
err:
return retval;
} }
static int __devinit cy_pci_probe(struct pci_dev *pdev, static int __devinit cy_pci_probe(struct pci_dev *pdev,
...@@ -4827,16 +5144,9 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev, ...@@ -4827,16 +5144,9 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
} }
/* Disable interrupts on the PLX before resetting it */ /* Disable interrupts on the PLX before resetting it */
cy_writew(addr0 + 0x68, cy_writew(addr0 + 0x68, readw(addr0 + 0x68) & ~0x0900);
readw(addr0 + 0x68) & ~0x0900);
plx_init(pdev, irq, addr0);
plx_init(addr0, 0x6c);
/* For some yet unknown reason, once the PLX9060 reloads
the EEPROM, the IRQ is lost and, thus, we have to
re-write it to the PCI config. registers.
This will remain here until we find a permanent
fix. */
pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
mailbox = (u32)readl(&ctl_addr->mail_box_0); mailbox = (u32)readl(&ctl_addr->mail_box_0);
...@@ -4877,6 +5187,9 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev, ...@@ -4877,6 +5187,9 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
cy_writel(addr2 + ID_ADDRESS, 0L); cy_writel(addr2 + ID_ADDRESS, 0L);
retval = cyz_load_fw(pdev, addr2, addr0, irq);
if (retval)
goto err_unmap;
/* This must be a Cyclades-8Zo/PCI. The extendable /* This must be a Cyclades-8Zo/PCI. The extendable
version will have a different device_id and will version will have a different device_id and will
be allocated its maximum number of ports. */ be allocated its maximum number of ports. */
...@@ -4953,15 +5266,7 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev, ...@@ -4953,15 +5266,7 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
case PLX_9060: case PLX_9060:
case PLX_9080: case PLX_9080:
default: /* Old boards, use PLX_9060 */ default: /* Old boards, use PLX_9060 */
plx_init(pdev, irq, addr0);
plx_init(addr0, 0x6c);
/* For some yet unknown reason, once the PLX9060 reloads
the EEPROM, the IRQ is lost and, thus, we have to
re-write it to the PCI config. registers.
This will remain here until we find a permanent
fix. */
pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
cy_writew(addr0 + 0x68, readw(addr0 + 0x68) | 0x0900); cy_writew(addr0 + 0x68, readw(addr0 + 0x68) | 0x0900);
break; break;
} }
......
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