[POWERPC] 8xx: powerpc port of core CPM PIC
This covers common CPM access functions, CPM interrupt controller code,
micropatch and a few compatibility things to kee the same driver base
working with arch/ppc. This version is refined with all the comments
(mostly PIC-related) addressed.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index 2621a7e..85dcdf1 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -22,4 +22,6 @@
ifeq ($(ARCH),powerpc)
obj-$(CONFIG_MTD) += rom.o
obj-$(CONFIG_CPM2) += cpm2_common.o cpm2_pic.o
+obj-$(CONFIG_8xx) += mpc8xx_pic.o commproc.o
+obj-$(CONFIG_UCODE_PATCH) += micropatch.o
endif
diff --git a/arch/powerpc/sysdev/commproc.c b/arch/powerpc/sysdev/commproc.c
new file mode 100644
index 0000000..9b4fafd
--- /dev/null
+++ b/arch/powerpc/sysdev/commproc.c
@@ -0,0 +1,398 @@
+/*
+ * General Purpose functions for the global management of the
+ * Communication Processor Module.
+ * Copyright (c) 1997 Dan error_act (dmalek@jlc.net)
+ *
+ * In addition to the individual control of the communication
+ * channels, there are a few functions that globally affect the
+ * communication processor.
+ *
+ * Buffer descriptors must be allocated from the dual ported memory
+ * space. The allocator for that is here. When the communication
+ * process is reset, we reclaim the memory available. There is
+ * currently no deallocator for this memory.
+ * The amount of space available is platform dependent. On the
+ * MBX, the EPPC software loads additional microcode into the
+ * communication processor, and uses some of the DP ram for this
+ * purpose. Current, the first 512 bytes and the last 256 bytes of
+ * memory are used. Right now I am conservative and only use the
+ * memory that can never be used for microcode. If there are
+ * applications that require more DP ram, we can expand the boundaries
+ * but then we have to be careful of any downloaded microcode.
+ */
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <asm/mpc8xx.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/8xx_immap.h>
+#include <asm/commproc.h>
+#include <asm/io.h>
+#include <asm/tlbflush.h>
+#include <asm/rheap.h>
+#include <asm/prom.h>
+
+#include <asm/fs_pd.h>
+
+#define CPM_MAP_SIZE (0x4000)
+
+static void m8xx_cpm_dpinit(void);
+static uint host_buffer; /* One page of host buffer */
+static uint host_end; /* end + 1 */
+cpm8xx_t *cpmp; /* Pointer to comm processor space */
+cpic8xx_t *cpic_reg;
+
+static struct device_node *cpm_pic_node;
+static struct irq_host *cpm_pic_host;
+
+static void cpm_mask_irq(unsigned int irq)
+{
+ unsigned int cpm_vec = (unsigned int)irq_map[irq].hwirq;
+
+ clrbits32(&cpic_reg->cpic_cimr, (1 << cpm_vec));
+}
+
+static void cpm_unmask_irq(unsigned int irq)
+{
+ unsigned int cpm_vec = (unsigned int)irq_map[irq].hwirq;
+
+ setbits32(&cpic_reg->cpic_cimr, (1 << cpm_vec));
+}
+
+static void cpm_end_irq(unsigned int irq)
+{
+ unsigned int cpm_vec = (unsigned int)irq_map[irq].hwirq;
+
+ out_be32(&cpic_reg->cpic_cisr, (1 << cpm_vec));
+}
+
+static struct irq_chip cpm_pic = {
+ .typename = " CPM PIC ",
+ .mask = cpm_mask_irq,
+ .unmask = cpm_unmask_irq,
+ .eoi = cpm_end_irq,
+};
+
+int cpm_get_irq(void)
+{
+ int cpm_vec;
+
+ /* Get the vector by setting the ACK bit and then reading
+ * the register.
+ */
+ out_be16(&cpic_reg->cpic_civr, 1);
+ cpm_vec = in_be16(&cpic_reg->cpic_civr);
+ cpm_vec >>= 11;
+
+ return irq_linear_revmap(cpm_pic_host, cpm_vec);
+}
+
+static int cpm_pic_host_match(struct irq_host *h, struct device_node *node)
+{
+ return cpm_pic_node == node;
+}
+
+static int cpm_pic_host_map(struct irq_host *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ pr_debug("cpm_pic_host_map(%d, 0x%lx)\n", virq, hw);
+
+ get_irq_desc(virq)->status |= IRQ_LEVEL;
+ set_irq_chip_and_handler(virq, &cpm_pic, handle_fasteoi_irq);
+ return 0;
+}
+
+/* The CPM can generate the error interrupt when there is a race condition
+ * between generating and masking interrupts. All we have to do is ACK it
+ * and return. This is a no-op function so we don't need any special
+ * tests in the interrupt handler.
+ */
+static irqreturn_t cpm_error_interrupt(int irq, void *dev)
+{
+ return IRQ_HANDLED;
+}
+
+static struct irqaction cpm_error_irqaction = {
+ .handler = cpm_error_interrupt,
+ .mask = CPU_MASK_NONE,
+ .name = "error",
+};
+
+static struct irq_host_ops cpm_pic_host_ops = {
+ .match = cpm_pic_host_match,
+ .map = cpm_pic_host_map,
+};
+
+unsigned int cpm_pic_init(void)
+{
+ struct device_node *np = NULL;
+ struct resource res;
+ unsigned int sirq = NO_IRQ, hwirq, eirq;
+ int ret;
+
+ pr_debug("cpm_pic_init\n");
+
+ np = of_find_compatible_node(NULL, "cpm-pic", "CPM");
+ if (np == NULL) {
+ printk(KERN_ERR "CPM PIC init: can not find cpm-pic node\n");
+ return sirq;
+ }
+ ret = of_address_to_resource(np, 0, &res);
+ if (ret)
+ goto end;
+
+ cpic_reg = (void *)ioremap(res.start, res.end - res.start + 1);
+ if (cpic_reg == NULL)
+ goto end;
+
+ sirq = irq_of_parse_and_map(np, 0);
+ if (sirq == NO_IRQ)
+ goto end;
+
+ /* Initialize the CPM interrupt controller. */
+ hwirq = (unsigned int)irq_map[sirq].hwirq;
+ out_be32(&cpic_reg->cpic_cicr,
+ (CICR_SCD_SCC4 | CICR_SCC_SCC3 | CICR_SCB_SCC2 | CICR_SCA_SCC1) |
+ ((hwirq/2) << 13) | CICR_HP_MASK);
+
+ out_be32(&cpic_reg->cpic_cimr, 0);
+
+ cpm_pic_node = of_node_get(np);
+
+ cpm_pic_host = irq_alloc_host(IRQ_HOST_MAP_LINEAR, 64, &cpm_pic_host_ops, 64);
+ if (cpm_pic_host == NULL) {
+ printk(KERN_ERR "CPM2 PIC: failed to allocate irq host!\n");
+ sirq = NO_IRQ;
+ goto end;
+ }
+ of_node_put(np);
+
+ /* Install our own error handler. */
+ np = of_find_node_by_type(NULL, "cpm");
+ if (np == NULL) {
+ printk(KERN_ERR "CPM PIC init: can not find cpm node\n");
+ goto end;
+ }
+ eirq= irq_of_parse_and_map(np, 0);
+ if (eirq == NO_IRQ)
+ goto end;
+
+ if (setup_irq(eirq, &cpm_error_irqaction))
+ printk(KERN_ERR "Could not allocate CPM error IRQ!");
+
+ setbits32(&cpic_reg->cpic_cicr, CICR_IEN);
+
+end:
+ of_node_put(np);
+ return sirq;
+}
+
+void cpm_reset(void)
+{
+ cpm8xx_t *commproc;
+ sysconf8xx_t *siu_conf;
+
+ commproc = (cpm8xx_t *)ioremap(CPM_MAP_ADDR, CPM_MAP_SIZE);
+
+#ifdef CONFIG_UCODE_PATCH
+ /* Perform a reset.
+ */
+ out_be16(&commproc->cp_cpcr, CPM_CR_RST | CPM_CR_FLG);
+
+ /* Wait for it.
+ */
+ while (in_be16(&commproc->cp_cpcr) & CPM_CR_FLG);
+
+ cpm_load_patch(commproc);
+#endif
+
+ /* Set SDMA Bus Request priority 5.
+ * On 860T, this also enables FEC priority 6. I am not sure
+ * this is what we realy want for some applications, but the
+ * manual recommends it.
+ * Bit 25, FAM can also be set to use FEC aggressive mode (860T).
+ */
+ siu_conf = (sysconf8xx_t*)immr_map(im_siu_conf);
+ out_be32(&siu_conf->sc_sdcr, 1);
+ immr_unmap(siu_conf);
+
+ /* Reclaim the DP memory for our use. */
+ m8xx_cpm_dpinit();
+
+ /* Tell everyone where the comm processor resides.
+ */
+ cpmp = commproc;
+}
+
+/* We used to do this earlier, but have to postpone as long as possible
+ * to ensure the kernel VM is now running.
+ */
+static void
+alloc_host_memory(void)
+{
+ dma_addr_t physaddr;
+
+ /* Set the host page for allocation.
+ */
+ host_buffer = (uint)dma_alloc_coherent(NULL, PAGE_SIZE, &physaddr,
+ GFP_KERNEL);
+ host_end = host_buffer + PAGE_SIZE;
+}
+
+/* We also own one page of host buffer space for the allocation of
+ * UART "fifos" and the like.
+ */
+uint
+m8xx_cpm_hostalloc(uint size)
+{
+ uint retloc;
+
+ if (host_buffer == 0)
+ alloc_host_memory();
+
+ if ((host_buffer + size) >= host_end)
+ return(0);
+
+ retloc = host_buffer;
+ host_buffer += size;
+
+ return(retloc);
+}
+
+/* Set a baud rate generator. This needs lots of work. There are
+ * four BRGs, any of which can be wired to any channel.
+ * The internal baud rate clock is the system clock divided by 16.
+ * This assumes the baudrate is 16x oversampled by the uart.
+ */
+#define BRG_INT_CLK (get_brgfreq())
+#define BRG_UART_CLK (BRG_INT_CLK/16)
+#define BRG_UART_CLK_DIV16 (BRG_UART_CLK/16)
+
+void
+cpm_setbrg(uint brg, uint rate)
+{
+ volatile uint *bp;
+
+ /* This is good enough to get SMCs running.....
+ */
+ bp = (uint *)&cpmp->cp_brgc1;
+ bp += brg;
+ /* The BRG has a 12-bit counter. For really slow baud rates (or
+ * really fast processors), we may have to further divide by 16.
+ */
+ if (((BRG_UART_CLK / rate) - 1) < 4096)
+ *bp = (((BRG_UART_CLK / rate) - 1) << 1) | CPM_BRG_EN;
+ else
+ *bp = (((BRG_UART_CLK_DIV16 / rate) - 1) << 1) |
+ CPM_BRG_EN | CPM_BRG_DIV16;
+}
+
+/*
+ * dpalloc / dpfree bits.
+ */
+static spinlock_t cpm_dpmem_lock;
+/*
+ * 16 blocks should be enough to satisfy all requests
+ * until the memory subsystem goes up...
+ */
+static rh_block_t cpm_boot_dpmem_rh_block[16];
+static rh_info_t cpm_dpmem_info;
+
+#define CPM_DPMEM_ALIGNMENT 8
+static u8* dpram_vbase;
+static uint dpram_pbase;
+
+void m8xx_cpm_dpinit(void)
+{
+ spin_lock_init(&cpm_dpmem_lock);
+
+ dpram_vbase = immr_map_size(im_cpm.cp_dpmem, CPM_DATAONLY_BASE + CPM_DATAONLY_SIZE);
+ dpram_pbase = (uint)&((immap_t *)IMAP_ADDR)->im_cpm.cp_dpmem;
+
+ /* Initialize the info header */
+ rh_init(&cpm_dpmem_info, CPM_DPMEM_ALIGNMENT,
+ sizeof(cpm_boot_dpmem_rh_block) /
+ sizeof(cpm_boot_dpmem_rh_block[0]),
+ cpm_boot_dpmem_rh_block);
+
+ /*
+ * Attach the usable dpmem area.
+ * XXX: This is actually crap. CPM_DATAONLY_BASE and
+ * CPM_DATAONLY_SIZE are a subset of the available dparm. It varies
+ * with the processor and the microcode patches applied / activated.
+ * But the following should be at least safe.
+ */
+ rh_attach_region(&cpm_dpmem_info, (void *)CPM_DATAONLY_BASE, CPM_DATAONLY_SIZE);
+}
+
+/*
+ * Allocate the requested size worth of DP memory.
+ * This function returns an offset into the DPRAM area.
+ * Use cpm_dpram_addr() to get the virtual address of the area.
+ */
+uint cpm_dpalloc(uint size, uint align)
+{
+ void *start;
+ unsigned long flags;
+
+ spin_lock_irqsave(&cpm_dpmem_lock, flags);
+ cpm_dpmem_info.alignment = align;
+ start = rh_alloc(&cpm_dpmem_info, size, "commproc");
+ spin_unlock_irqrestore(&cpm_dpmem_lock, flags);
+
+ return (uint)start;
+}
+EXPORT_SYMBOL(cpm_dpalloc);
+
+int cpm_dpfree(uint offset)
+{
+ int ret;
+ unsigned long flags;
+
+ spin_lock_irqsave(&cpm_dpmem_lock, flags);
+ ret = rh_free(&cpm_dpmem_info, (void *)offset);
+ spin_unlock_irqrestore(&cpm_dpmem_lock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL(cpm_dpfree);
+
+uint cpm_dpalloc_fixed(uint offset, uint size, uint align)
+{
+ void *start;
+ unsigned long flags;
+
+ spin_lock_irqsave(&cpm_dpmem_lock, flags);
+ cpm_dpmem_info.alignment = align;
+ start = rh_alloc_fixed(&cpm_dpmem_info, (void *)offset, size, "commproc");
+ spin_unlock_irqrestore(&cpm_dpmem_lock, flags);
+
+ return (uint)start;
+}
+EXPORT_SYMBOL(cpm_dpalloc_fixed);
+
+void cpm_dpdump(void)
+{
+ rh_dump(&cpm_dpmem_info);
+}
+EXPORT_SYMBOL(cpm_dpdump);
+
+void *cpm_dpram_addr(uint offset)
+{
+ return (void *)(dpram_vbase + offset);
+}
+EXPORT_SYMBOL(cpm_dpram_addr);
+
+uint cpm_dpram_phys(u8* addr)
+{
+ return (dpram_pbase + (uint)(addr - dpram_vbase));
+}
+EXPORT_SYMBOL(cpm_dpram_addr);
diff --git a/arch/powerpc/sysdev/micropatch.c b/arch/powerpc/sysdev/micropatch.c
new file mode 100644
index 0000000..712b10a
--- /dev/null
+++ b/arch/powerpc/sysdev/micropatch.c
@@ -0,0 +1,743 @@
+
+/* Microcode patches for the CPM as supplied by Motorola.
+ * This is the one for IIC/SPI. There is a newer one that
+ * also relocates SMC2, but this would require additional changes
+ * to uart.c, so I am holding off on that for a moment.
+ */
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <asm/irq.h>
+#include <asm/mpc8xx.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/8xx_immap.h>
+#include <asm/commproc.h>
+
+/*
+ * I2C/SPI relocation patch arrays.
+ */
+
+#ifdef CONFIG_I2C_SPI_UCODE_PATCH
+
+uint patch_2000[] = {
+ 0x7FFFEFD9,
+ 0x3FFD0000,
+ 0x7FFB49F7,
+ 0x7FF90000,
+ 0x5FEFADF7,
+ 0x5F89ADF7,
+ 0x5FEFAFF7,
+ 0x5F89AFF7,
+ 0x3A9CFBC8,
+ 0xE7C0EDF0,
+ 0x77C1E1BB,
+ 0xF4DC7F1D,
+ 0xABAD932F,
+ 0x4E08FDCF,
+ 0x6E0FAFF8,
+ 0x7CCF76CF,
+ 0xFD1FF9CF,
+ 0xABF88DC6,
+ 0xAB5679F7,
+ 0xB0937383,
+ 0xDFCE79F7,
+ 0xB091E6BB,
+ 0xE5BBE74F,
+ 0xB3FA6F0F,
+ 0x6FFB76CE,
+ 0xEE0DF9CF,
+ 0x2BFBEFEF,
+ 0xCFEEF9CF,
+ 0x76CEAD24,
+ 0x90B2DF9A,
+ 0x7FDDD0BF,
+ 0x4BF847FD,
+ 0x7CCF76CE,
+ 0xCFEF7E1F,
+ 0x7F1D7DFD,
+ 0xF0B6EF71,
+ 0x7FC177C1,
+ 0xFBC86079,
+ 0xE722FBC8,
+ 0x5FFFDFFF,
+ 0x5FB2FFFB,
+ 0xFBC8F3C8,
+ 0x94A67F01,
+ 0x7F1D5F39,
+ 0xAFE85F5E,
+ 0xFFDFDF96,
+ 0xCB9FAF7D,
+ 0x5FC1AFED,
+ 0x8C1C5FC1,
+ 0xAFDD5FC3,
+ 0xDF9A7EFD,
+ 0xB0B25FB2,
+ 0xFFFEABAD,
+ 0x5FB2FFFE,
+ 0x5FCE600B,
+ 0xE6BB600B,
+ 0x5FCEDFC6,
+ 0x27FBEFDF,
+ 0x5FC8CFDE,
+ 0x3A9CE7C0,
+ 0xEDF0F3C8,
+ 0x7F0154CD,
+ 0x7F1D2D3D,
+ 0x363A7570,
+ 0x7E0AF1CE,
+ 0x37EF2E68,
+ 0x7FEE10EC,
+ 0xADF8EFDE,
+ 0xCFEAE52F,
+ 0x7D0FE12B,
+ 0xF1CE5F65,
+ 0x7E0A4DF8,
+ 0xCFEA5F72,
+ 0x7D0BEFEE,
+ 0xCFEA5F74,
+ 0xE522EFDE,
+ 0x5F74CFDA,
+ 0x0B627385,
+ 0xDF627E0A,
+ 0x30D8145B,
+ 0xBFFFF3C8,
+ 0x5FFFDFFF,
+ 0xA7F85F5E,
+ 0xBFFE7F7D,
+ 0x10D31450,
+ 0x5F36BFFF,
+ 0xAF785F5E,
+ 0xBFFDA7F8,
+ 0x5F36BFFE,
+ 0x77FD30C0,
+ 0x4E08FDCF,
+ 0xE5FF6E0F,
+ 0xAFF87E1F,
+ 0x7E0FFD1F,
+ 0xF1CF5F1B,
+ 0xABF80D5E,
+ 0x5F5EFFEF,
+ 0x79F730A2,
+ 0xAFDD5F34,
+ 0x47F85F34,
+ 0xAFED7FDD,
+ 0x50B24978,
+ 0x47FD7F1D,
+ 0x7DFD70AD,
+ 0xEF717EC1,
+ 0x6BA47F01,
+ 0x2D267EFD,
+ 0x30DE5F5E,
+ 0xFFFD5F5E,
+ 0xFFEF5F5E,
+ 0xFFDF0CA0,
+ 0xAFED0A9E,
+ 0xAFDD0C3A,
+ 0x5F3AAFBD,
+ 0x7FBDB082,
+ 0x5F8247F8
+};
+
+uint patch_2f00[] = {
+ 0x3E303430,
+ 0x34343737,
+ 0xABF7BF9B,
+ 0x994B4FBD,
+ 0xBD599493,
+ 0x349FFF37,
+ 0xFB9B177D,
+ 0xD9936956,
+ 0xBBFDD697,
+ 0xBDD2FD11,
+ 0x31DB9BB3,
+ 0x63139637,
+ 0x93733693,
+ 0x193137F7,
+ 0x331737AF,
+ 0x7BB9B999,
+ 0xBB197957,
+ 0x7FDFD3D5,
+ 0x73B773F7,
+ 0x37933B99,
+ 0x1D115316,
+ 0x99315315,
+ 0x31694BF4,
+ 0xFBDBD359,
+ 0x31497353,
+ 0x76956D69,
+ 0x7B9D9693,
+ 0x13131979,
+ 0x79376935
+};
+#endif
+
+/*
+ * I2C/SPI/SMC1 relocation patch arrays.
+ */
+
+#ifdef CONFIG_I2C_SPI_SMC1_UCODE_PATCH
+
+uint patch_2000[] = {
+ 0x3fff0000,
+ 0x3ffd0000,
+ 0x3ffb0000,
+ 0x3ff90000,
+ 0x5f13eff8,
+ 0x5eb5eff8,
+ 0x5f88adf7,
+ 0x5fefadf7,
+ 0x3a9cfbc8,
+ 0x77cae1bb,
+ 0xf4de7fad,
+ 0xabae9330,
+ 0x4e08fdcf,
+ 0x6e0faff8,
+ 0x7ccf76cf,
+ 0xfdaff9cf,
+ 0xabf88dc8,
+ 0xab5879f7,
+ 0xb0925d8d,
+ 0xdfd079f7,
+ 0xb090e6bb,
+ 0xe5bbe74f,
+ 0x9e046f0f,
+ 0x6ffb76ce,
+ 0xee0cf9cf,
+ 0x2bfbefef,
+ 0xcfeef9cf,
+ 0x76cead23,
+ 0x90b3df99,
+ 0x7fddd0c1,
+ 0x4bf847fd,
+ 0x7ccf76ce,
+ 0xcfef77ca,
+ 0x7eaf7fad,
+ 0x7dfdf0b7,
+ 0xef7a7fca,
+ 0x77cafbc8,
+ 0x6079e722,
+ 0xfbc85fff,
+ 0xdfff5fb3,
+ 0xfffbfbc8,
+ 0xf3c894a5,
+ 0xe7c9edf9,
+ 0x7f9a7fad,
+ 0x5f36afe8,
+ 0x5f5bffdf,
+ 0xdf95cb9e,
+ 0xaf7d5fc3,
+ 0xafed8c1b,
+ 0x5fc3afdd,
+ 0x5fc5df99,
+ 0x7efdb0b3,
+ 0x5fb3fffe,
+ 0xabae5fb3,
+ 0xfffe5fd0,
+ 0x600be6bb,
+ 0x600b5fd0,
+ 0xdfc827fb,
+ 0xefdf5fca,
+ 0xcfde3a9c,
+ 0xe7c9edf9,
+ 0xf3c87f9e,
+ 0x54ca7fed,
+ 0x2d3a3637,
+ 0x756f7e9a,
+ 0xf1ce37ef,
+ 0x2e677fee,
+ 0x10ebadf8,
+ 0xefdecfea,
+ 0xe52f7d9f,
+ 0xe12bf1ce,
+ 0x5f647e9a,
+ 0x4df8cfea,
+ 0x5f717d9b,
+ 0xefeecfea,
+ 0x5f73e522,
+ 0xefde5f73,
+ 0xcfda0b61,
+ 0x5d8fdf61,
+ 0xe7c9edf9,
+ 0x7e9a30d5,
+ 0x1458bfff,
+ 0xf3c85fff,
+ 0xdfffa7f8,
+ 0x5f5bbffe,
+ 0x7f7d10d0,
+ 0x144d5f33,
+ 0xbfffaf78,
+ 0x5f5bbffd,
+ 0xa7f85f33,
+ 0xbffe77fd,
+ 0x30bd4e08,
+ 0xfdcfe5ff,
+ 0x6e0faff8,
+ 0x7eef7e9f,
+ 0xfdeff1cf,
+ 0x5f17abf8,
+ 0x0d5b5f5b,
+ 0xffef79f7,
+ 0x309eafdd,
+ 0x5f3147f8,
+ 0x5f31afed,
+ 0x7fdd50af,
+ 0x497847fd,
+ 0x7f9e7fed,
+ 0x7dfd70a9,
+ 0xef7e7ece,
+ 0x6ba07f9e,
+ 0x2d227efd,
+ 0x30db5f5b,
+ 0xfffd5f5b,
+ 0xffef5f5b,
+ 0xffdf0c9c,
+ 0xafed0a9a,
+ 0xafdd0c37,
+ 0x5f37afbd,
+ 0x7fbdb081,
+ 0x5f8147f8,
+ 0x3a11e710,
+ 0xedf0ccdd,
+ 0xf3186d0a,
+ 0x7f0e5f06,
+ 0x7fedbb38,
+ 0x3afe7468,
+ 0x7fedf4fc,
+ 0x8ffbb951,
+ 0xb85f77fd,
+ 0xb0df5ddd,
+ 0xdefe7fed,
+ 0x90e1e74d,
+ 0x6f0dcbf7,
+ 0xe7decfed,
+ 0xcb74cfed,
+ 0xcfeddf6d,
+ 0x91714f74,
+ 0x5dd2deef,
+ 0x9e04e7df,
+ 0xefbb6ffb,
+ 0xe7ef7f0e,
+ 0x9e097fed,
+ 0xebdbeffa,
+ 0xeb54affb,
+ 0x7fea90d7,
+ 0x7e0cf0c3,
+ 0xbffff318,
+ 0x5fffdfff,
+ 0xac59efea,
+ 0x7fce1ee5,
+ 0xe2ff5ee1,
+ 0xaffbe2ff,
+ 0x5ee3affb,
+ 0xf9cc7d0f,
+ 0xaef8770f,
+ 0x7d0fb0c6,
+ 0xeffbbfff,
+ 0xcfef5ede,
+ 0x7d0fbfff,
+ 0x5ede4cf8,
+ 0x7fddd0bf,
+ 0x49f847fd,
+ 0x7efdf0bb,
+ 0x7fedfffd,
+ 0x7dfdf0b7,
+ 0xef7e7e1e,
+ 0x5ede7f0e,
+ 0x3a11e710,
+ 0xedf0ccab,
+ 0xfb18ad2e,
+ 0x1ea9bbb8,
+ 0x74283b7e,
+ 0x73c2e4bb,
+ 0x2ada4fb8,
+ 0xdc21e4bb,
+ 0xb2a1ffbf,
+ 0x5e2c43f8,
+ 0xfc87e1bb,
+ 0xe74ffd91,
+ 0x6f0f4fe8,
+ 0xc7ba32e2,
+ 0xf396efeb,
+ 0x600b4f78,
+ 0xe5bb760b,
+ 0x53acaef8,
+ 0x4ef88b0e,
+ 0xcfef9e09,
+ 0xabf8751f,
+ 0xefef5bac,
+ 0x741f4fe8,
+ 0x751e760d,
+ 0x7fdbf081,
+ 0x741cafce,
+ 0xefcc7fce,
+ 0x751e70ac,
+ 0x741ce7bb,
+ 0x3372cfed,
+ 0xafdbefeb,
+ 0xe5bb760b,
+ 0x53f2aef8,
+ 0xafe8e7eb,
+ 0x4bf8771e,
+ 0x7e247fed,
+ 0x4fcbe2cc,
+ 0x7fbc30a9,
+ 0x7b0f7a0f,
+ 0x34d577fd,
+ 0x308b5db7,
+ 0xde553e5f,
+ 0xaf78741f,
+ 0x741f30f0,
+ 0xcfef5e2c,
+ 0x741f3eac,
+ 0xafb8771e,
+ 0x5e677fed,
+ 0x0bd3e2cc,
+ 0x741ccfec,
+ 0xe5ca53cd,
+ 0x6fcb4f74,
+ 0x5dadde4b,
+ 0x2ab63d38,
+ 0x4bb3de30,
+ 0x751f741c,
+ 0x6c42effa,
+ 0xefea7fce,
+ 0x6ffc30be,
+ 0xefec3fca,
+ 0x30b3de2e,
+ 0xadf85d9e,
+ 0xaf7daefd,
+ 0x5d9ede2e,
+ 0x5d9eafdd,
+ 0x761f10ac,
+ 0x1da07efd,
+ 0x30adfffe,
+ 0x4908fb18,
+ 0x5fffdfff,
+ 0xafbb709b,
+ 0x4ef85e67,
+ 0xadf814ad,
+ 0x7a0f70ad,
+ 0xcfef50ad,
+ 0x7a0fde30,
+ 0x5da0afed,
+ 0x3c12780f,
+ 0xefef780f,
+ 0xefef790f,
+ 0xa7f85e0f,
+ 0xffef790f,
+ 0xefef790f,
+ 0x14adde2e,
+ 0x5d9eadfd,
+ 0x5e2dfffb,
+ 0xe79addfd,
+ 0xeff96079,
+ 0x607ae79a,
+ 0xddfceff9,
+ 0x60795dff,
+ 0x607acfef,
+ 0xefefefdf,
+ 0xefbfef7f,
+ 0xeeffedff,
+ 0xebffe7ff,
+ 0xafefafdf,
+ 0xafbfaf7f,
+ 0xaeffadff,
+ 0xabffa7ff,
+ 0x6fef6fdf,
+ 0x6fbf6f7f,
+ 0x6eff6dff,
+ 0x6bff67ff,
+ 0x2fef2fdf,
+ 0x2fbf2f7f,
+ 0x2eff2dff,
+ 0x2bff27ff,
+ 0x4e08fd1f,
+ 0xe5ff6e0f,
+ 0xaff87eef,
+ 0x7e0ffdef,
+ 0xf11f6079,
+ 0xabf8f542,
+ 0x7e0af11c,
+ 0x37cfae3a,
+ 0x7fec90be,
+ 0xadf8efdc,
+ 0xcfeae52f,
+ 0x7d0fe12b,
+ 0xf11c6079,
+ 0x7e0a4df8,
+ 0xcfea5dc4,
+ 0x7d0befec,
+ 0xcfea5dc6,
+ 0xe522efdc,
+ 0x5dc6cfda,
+ 0x4e08fd1f,
+ 0x6e0faff8,
+ 0x7c1f761f,
+ 0xfdeff91f,
+ 0x6079abf8,
+ 0x761cee24,
+ 0xf91f2bfb,
+ 0xefefcfec,
+ 0xf91f6079,
+ 0x761c27fb,
+ 0xefdf5da7,
+ 0xcfdc7fdd,
+ 0xd09c4bf8,
+ 0x47fd7c1f,
+ 0x761ccfcf,
+ 0x7eef7fed,
+ 0x7dfdf093,
+ 0xef7e7f1e,
+ 0x771efb18,
+ 0x6079e722,
+ 0xe6bbe5bb,
+ 0xae0ae5bb,
+ 0x600bae85,
+ 0xe2bbe2bb,
+ 0xe2bbe2bb,
+ 0xaf02e2bb,
+ 0xe2bb2ff9,
+ 0x6079e2bb
+};
+
+uint patch_2f00[] = {
+ 0x30303030,
+ 0x3e3e3434,
+ 0xabbf9b99,
+ 0x4b4fbdbd,
+ 0x59949334,
+ 0x9fff37fb,
+ 0x9b177dd9,
+ 0x936956bb,
+ 0xfbdd697b,
+ 0xdd2fd113,
+ 0x1db9f7bb,
+ 0x36313963,
+ 0x79373369,
+ 0x3193137f,
+ 0x7331737a,
+ 0xf7bb9b99,
+ 0x9bb19795,
+ 0x77fdfd3d,
+ 0x573b773f,
+ 0x737933f7,
+ 0xb991d115,
+ 0x31699315,
+ 0x31531694,
+ 0xbf4fbdbd,
+ 0x35931497,
+ 0x35376956,
+ 0xbd697b9d,
+ 0x96931313,
+ 0x19797937,
+ 0x6935af78,
+ 0xb9b3baa3,
+ 0xb8788683,
+ 0x368f78f7,
+ 0x87778733,
+ 0x3ffffb3b,
+ 0x8e8f78b8,
+ 0x1d118e13,
+ 0xf3ff3f8b,
+ 0x6bd8e173,
+ 0xd1366856,
+ 0x68d1687b,
+ 0x3daf78b8,
+ 0x3a3a3f87,
+ 0x8f81378f,
+ 0xf876f887,
+ 0x77fd8778,
+ 0x737de8d6,
+ 0xbbf8bfff,
+ 0xd8df87f7,
+ 0xfd876f7b,
+ 0x8bfff8bd,
+ 0x8683387d,
+ 0xb873d87b,
+ 0x3b8fd7f8,
+ 0xf7338883,
+ 0xbb8ee1f8,
+ 0xef837377,
+ 0x3337b836,
+ 0x817d11f8,
+ 0x7378b878,
+ 0xd3368b7d,
+ 0xed731b7d,
+ 0x833731f3,
+ 0xf22f3f23
+};
+
+uint patch_2e00[] = {
+ 0x27eeeeee,
+ 0xeeeeeeee,
+ 0xeeeeeeee,
+ 0xeeeeeeee,
+ 0xee4bf4fb,
+ 0xdbd259bb,
+ 0x1979577f,
+ 0xdfd2d573,
+ 0xb773f737,
+ 0x4b4fbdbd,
+ 0x25b9b177,
+ 0xd2d17376,
+ 0x956bbfdd,
+ 0x697bdd2f,
+ 0xff9f79ff,
+ 0xff9ff22f
+};
+#endif
+
+/*
+ * USB SOF patch arrays.
+ */
+
+#ifdef CONFIG_USB_SOF_UCODE_PATCH
+
+uint patch_2000[] = {
+ 0x7fff0000,
+ 0x7ffd0000,
+ 0x7ffb0000,
+ 0x49f7ba5b,
+ 0xba383ffb,
+ 0xf9b8b46d,
+ 0xe5ab4e07,
+ 0xaf77bffe,
+ 0x3f7bbf79,
+ 0xba5bba38,
+ 0xe7676076,
+ 0x60750000
+};
+
+uint patch_2f00[] = {
+ 0x3030304c,
+ 0xcab9e441,
+ 0xa1aaf220
+};
+#endif
+
+void
+cpm_load_patch(cpm8xx_t *cp)
+{
+ volatile uint *dp; /* Dual-ported RAM. */
+ volatile cpm8xx_t *commproc;
+ volatile iic_t *iip;
+ volatile spi_t *spp;
+ volatile smc_uart_t *smp;
+ int i;
+
+ commproc = cp;
+
+#ifdef CONFIG_USB_SOF_UCODE_PATCH
+ commproc->cp_rccr = 0;
+
+ dp = (uint *)(commproc->cp_dpmem);
+ for (i=0; i<(sizeof(patch_2000)/4); i++)
+ *dp++ = patch_2000[i];
+
+ dp = (uint *)&(commproc->cp_dpmem[0x0f00]);
+ for (i=0; i<(sizeof(patch_2f00)/4); i++)
+ *dp++ = patch_2f00[i];
+
+ commproc->cp_rccr = 0x0009;
+
+ printk("USB SOF microcode patch installed\n");
+#endif /* CONFIG_USB_SOF_UCODE_PATCH */
+
+#if defined(CONFIG_I2C_SPI_UCODE_PATCH) || \
+ defined(CONFIG_I2C_SPI_SMC1_UCODE_PATCH)
+
+ commproc->cp_rccr = 0;
+
+ dp = (uint *)(commproc->cp_dpmem);
+ for (i=0; i<(sizeof(patch_2000)/4); i++)
+ *dp++ = patch_2000[i];
+
+ dp = (uint *)&(commproc->cp_dpmem[0x0f00]);
+ for (i=0; i<(sizeof(patch_2f00)/4); i++)
+ *dp++ = patch_2f00[i];
+
+ iip = (iic_t *)&commproc->cp_dparam[PROFF_IIC];
+# define RPBASE 0x0500
+ iip->iic_rpbase = RPBASE;
+
+ /* Put SPI above the IIC, also 32-byte aligned.
+ */
+ i = (RPBASE + sizeof(iic_t) + 31) & ~31;
+ spp = (spi_t *)&commproc->cp_dparam[PROFF_SPI];
+ spp->spi_rpbase = i;
+
+# if defined(CONFIG_I2C_SPI_UCODE_PATCH)
+ commproc->cp_cpmcr1 = 0x802a;
+ commproc->cp_cpmcr2 = 0x8028;
+ commproc->cp_cpmcr3 = 0x802e;
+ commproc->cp_cpmcr4 = 0x802c;
+ commproc->cp_rccr = 1;
+
+ printk("I2C/SPI microcode patch installed.\n");
+# endif /* CONFIG_I2C_SPI_UCODE_PATCH */
+
+# if defined(CONFIG_I2C_SPI_SMC1_UCODE_PATCH)
+
+ dp = (uint *)&(commproc->cp_dpmem[0x0e00]);
+ for (i=0; i<(sizeof(patch_2e00)/4); i++)
+ *dp++ = patch_2e00[i];
+
+ commproc->cp_cpmcr1 = 0x8080;
+ commproc->cp_cpmcr2 = 0x808a;
+ commproc->cp_cpmcr3 = 0x8028;
+ commproc->cp_cpmcr4 = 0x802a;
+ commproc->cp_rccr = 3;
+
+ smp = (smc_uart_t *)&commproc->cp_dparam[PROFF_SMC1];
+ smp->smc_rpbase = 0x1FC0;
+
+ printk("I2C/SPI/SMC1 microcode patch installed.\n");
+# endif /* CONFIG_I2C_SPI_SMC1_UCODE_PATCH) */
+
+#endif /* some variation of the I2C/SPI patch was selected */
+}
+
+/*
+ * Take this entire routine out, since no one calls it and its
+ * logic is suspect.
+ */
+
+#if 0
+void
+verify_patch(volatile immap_t *immr)
+{
+ volatile uint *dp;
+ volatile cpm8xx_t *commproc;
+ int i;
+
+ commproc = (cpm8xx_t *)&immr->im_cpm;
+
+ printk("cp_rccr %x\n", commproc->cp_rccr);
+ commproc->cp_rccr = 0;
+
+ dp = (uint *)(commproc->cp_dpmem);
+ for (i=0; i<(sizeof(patch_2000)/4); i++)
+ if (*dp++ != patch_2000[i]) {
+ printk("patch_2000 bad at %d\n", i);
+ dp--;
+ printk("found 0x%X, wanted 0x%X\n", *dp, patch_2000[i]);
+ break;
+ }
+
+ dp = (uint *)&(commproc->cp_dpmem[0x0f00]);
+ for (i=0; i<(sizeof(patch_2f00)/4); i++)
+ if (*dp++ != patch_2f00[i]) {
+ printk("patch_2f00 bad at %d\n", i);
+ dp--;
+ printk("found 0x%X, wanted 0x%X\n", *dp, patch_2f00[i]);
+ break;
+ }
+
+ commproc->cp_rccr = 0x0009;
+}
+#endif
diff --git a/arch/powerpc/sysdev/mpc8xx_pic.c b/arch/powerpc/sysdev/mpc8xx_pic.c
new file mode 100644
index 0000000..2fc2bcd
--- /dev/null
+++ b/arch/powerpc/sysdev/mpc8xx_pic.c
@@ -0,0 +1,197 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/stddef.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/irq.h>
+#include <linux/dma-mapping.h>
+#include <asm/prom.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/8xx_immap.h>
+#include <asm/mpc8xx.h>
+
+#include "mpc8xx_pic.h"
+
+
+#define PIC_VEC_SPURRIOUS 15
+
+extern int cpm_get_irq(struct pt_regs *regs);
+
+static struct device_node *mpc8xx_pic_node;
+static struct irq_host *mpc8xx_pic_host;
+#define NR_MASK_WORDS ((NR_IRQS + 31) / 32)
+static unsigned long ppc_cached_irq_mask[NR_MASK_WORDS];
+static sysconf8xx_t *siu_reg;
+
+int cpm_get_irq(struct pt_regs *regs);
+
+static void mpc8xx_unmask_irq(unsigned int virq)
+{
+ int bit, word;
+ unsigned int irq_nr = (unsigned int)irq_map[virq].hwirq;
+
+ bit = irq_nr & 0x1f;
+ word = irq_nr >> 5;
+
+ ppc_cached_irq_mask[word] |= (1 << (31-bit));
+ out_be32(&siu_reg->sc_simask, ppc_cached_irq_mask[word]);
+}
+
+static void mpc8xx_mask_irq(unsigned int virq)
+{
+ int bit, word;
+ unsigned int irq_nr = (unsigned int)irq_map[virq].hwirq;
+
+ bit = irq_nr & 0x1f;
+ word = irq_nr >> 5;
+
+ ppc_cached_irq_mask[word] &= ~(1 << (31-bit));
+ out_be32(&siu_reg->sc_simask, ppc_cached_irq_mask[word]);
+}
+
+static void mpc8xx_ack(unsigned int virq)
+{
+ int bit;
+ unsigned int irq_nr = (unsigned int)irq_map[virq].hwirq;
+
+ bit = irq_nr & 0x1f;
+ out_be32(&siu_reg->sc_sipend, 1 << (31-bit));
+}
+
+static void mpc8xx_end_irq(unsigned int virq)
+{
+ int bit, word;
+ unsigned int irq_nr = (unsigned int)irq_map[virq].hwirq;
+
+ bit = irq_nr & 0x1f;
+ word = irq_nr >> 5;
+
+ ppc_cached_irq_mask[word] |= (1 << (31-bit));
+ out_be32(&siu_reg->sc_simask, ppc_cached_irq_mask[word]);
+}
+
+static int mpc8xx_set_irq_type(unsigned int virq, unsigned int flow_type)
+{
+ struct irq_desc *desc = get_irq_desc(virq);
+
+ desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
+ desc->status |= flow_type & IRQ_TYPE_SENSE_MASK;
+ if (flow_type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW))
+ desc->status |= IRQ_LEVEL;
+
+ if (flow_type & IRQ_TYPE_EDGE_FALLING) {
+ irq_hw_number_t hw = (unsigned int)irq_map[virq].hwirq;
+ unsigned int siel = in_be32(&siu_reg->sc_siel);
+
+ /* only external IRQ senses are programmable */
+ if ((hw & 1) == 0) {
+ siel |= (0x80000000 >> hw);
+ out_be32(&siu_reg->sc_siel, siel);
+ desc->handle_irq = handle_edge_irq;
+ }
+ }
+ return 0;
+}
+
+static struct irq_chip mpc8xx_pic = {
+ .typename = " MPC8XX SIU ",
+ .unmask = mpc8xx_unmask_irq,
+ .mask = mpc8xx_mask_irq,
+ .ack = mpc8xx_ack,
+ .eoi = mpc8xx_end_irq,
+ .set_type = mpc8xx_set_irq_type,
+};
+
+unsigned int mpc8xx_get_irq(void)
+{
+ int irq;
+
+ /* For MPC8xx, read the SIVEC register and shift the bits down
+ * to get the irq number.
+ */
+ irq = in_be32(&siu_reg->sc_sivec) >> 26;
+
+ if (irq == PIC_VEC_SPURRIOUS)
+ irq = NO_IRQ;
+
+ return irq_linear_revmap(mpc8xx_pic_host, irq);
+
+}
+
+static int mpc8xx_pic_host_match(struct irq_host *h, struct device_node *node)
+{
+ return mpc8xx_pic_node == node;
+}
+
+static int mpc8xx_pic_host_map(struct irq_host *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ pr_debug("mpc8xx_pic_host_map(%d, 0x%lx)\n", virq, hw);
+
+ /* Set default irq handle */
+ set_irq_chip_and_handler(virq, &mpc8xx_pic, handle_level_irq);
+ return 0;
+}
+
+
+static int mpc8xx_pic_host_xlate(struct irq_host *h, struct device_node *ct,
+ u32 *intspec, unsigned int intsize,
+ irq_hw_number_t *out_hwirq, unsigned int *out_flags)
+{
+ static unsigned char map_pic_senses[4] = {
+ IRQ_TYPE_EDGE_RISING,
+ IRQ_TYPE_LEVEL_LOW,
+ IRQ_TYPE_LEVEL_HIGH,
+ IRQ_TYPE_EDGE_FALLING,
+ };
+
+ *out_hwirq = intspec[0];
+ if (intsize > 1 && intspec[1] < 4)
+ *out_flags = map_pic_senses[intspec[1]];
+ else
+ *out_flags = IRQ_TYPE_NONE;
+
+ return 0;
+}
+
+
+static struct irq_host_ops mpc8xx_pic_host_ops = {
+ .match = mpc8xx_pic_host_match,
+ .map = mpc8xx_pic_host_map,
+ .xlate = mpc8xx_pic_host_xlate,
+};
+
+int mpc8xx_pic_init(void)
+{
+ struct resource res;
+ struct device_node *np = NULL;
+ int ret;
+
+ np = of_find_node_by_type(np, "mpc8xx-pic");
+
+ if (np == NULL) {
+ printk(KERN_ERR "Could not find open-pic node\n");
+ return -ENOMEM;
+ }
+
+ mpc8xx_pic_node = of_node_get(np);
+
+ ret = of_address_to_resource(np, 0, &res);
+ of_node_put(np);
+ if (ret)
+ return ret;
+
+ siu_reg = (void *)ioremap(res.start, res.end - res.start + 1);
+ if (siu_reg == NULL)
+ return -EINVAL;
+
+ mpc8xx_pic_host = irq_alloc_host(IRQ_HOST_MAP_LINEAR, 64, &mpc8xx_pic_host_ops, 64);
+ if (mpc8xx_pic_host == NULL) {
+ printk(KERN_ERR "MPC8xx PIC: failed to allocate irq host!\n");
+ ret = -ENOMEM;
+ }
+
+ return ret;
+}
diff --git a/arch/powerpc/sysdev/mpc8xx_pic.h b/arch/powerpc/sysdev/mpc8xx_pic.h
new file mode 100644
index 0000000..afa2ee6
--- /dev/null
+++ b/arch/powerpc/sysdev/mpc8xx_pic.h
@@ -0,0 +1,12 @@
+#ifndef _PPC_KERNEL_MPC8xx_H
+#define _PPC_KERNEL_MPC8xx_H
+
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+
+extern struct hw_interrupt_type mpc8xx_pic;
+
+int mpc8xx_pic_init(void);
+unsigned int mpc8xx_get_irq(void);
+
+#endif /* _PPC_KERNEL_PPC8xx_H */