2 * Copyright (C) 2010 Bluecherry, LLC www.bluecherrydvr.com
3 * Copyright (C) 2010 Ben Collins <bcollins@bluecherry.net>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 #include <linux/kernel.h>
24 // #define SOLO_TEST_P2M
26 int solo_p2m_dma(struct solo6010_dev
*solo_dev
, u8 id
, int wr
,
27 void *sys_addr
, u32 ext_addr
, u32 size
)
33 WARN_ON(id
>= SOLO_NR_P2M
);
34 if (!size
|| id
>= SOLO_NR_P2M
)
37 dma_addr
= pci_map_single(solo_dev
->pdev
, sys_addr
, size
,
38 wr
? PCI_DMA_TODEVICE
: PCI_DMA_FROMDEVICE
);
40 ret
= solo_p2m_dma_t(solo_dev
, id
, wr
, dma_addr
, ext_addr
, size
);
42 pci_unmap_single(solo_dev
->pdev
, dma_addr
, size
,
43 wr
? PCI_DMA_TODEVICE
: PCI_DMA_FROMDEVICE
);
48 int solo_p2m_dma_t(struct solo6010_dev
*solo_dev
, u8 id
, int wr
,
49 dma_addr_t dma_addr
, u32 ext_addr
, u32 size
)
51 struct solo_p2m_dev
*p2m_dev
;
52 unsigned int timeout
= 0;
55 WARN_ON(id
>= SOLO_NR_P2M
);
56 if (!size
|| id
>= SOLO_NR_P2M
)
59 p2m_dev
= &solo_dev
->p2m_dev
[id
];
64 INIT_COMPLETION(p2m_dev
->completion
);
66 solo_reg_write(solo_dev
, SOLO_P2M_TAR_ADR(id
), dma_addr
);
67 solo_reg_write(solo_dev
, SOLO_P2M_EXT_ADR(id
), ext_addr
);
68 solo_reg_write(solo_dev
, SOLO_P2M_EXT_CFG(id
),
69 SOLO_P2M_COPY_SIZE(size
>> 2));
70 solo_reg_write(solo_dev
, SOLO_P2M_CONTROL(id
),
71 SOLO_P2M_BURST_SIZE(SOLO_P2M_BURST_256
) |
72 (wr
? SOLO_P2M_WRITE
: 0) | SOLO_P2M_TRANS_ON
);
74 timeout
= wait_for_completion_timeout(&p2m_dev
->completion
, HZ
);
76 solo_reg_write(solo_dev
, SOLO_P2M_CONTROL(id
), 0);
83 return (timeout
== 0) ? -EAGAIN
: 0;
88 #define P2M_TEST_CHAR 0xbe
90 static unsigned long long p2m_test(struct solo6010_dev
*solo_dev
, u8 id
,
96 unsigned long long err_cnt
= 0;
98 wr_buf
= kmalloc(size
, GFP_KERNEL
);
100 printk(SOLO6010_NAME
": Failed to malloc for p2m_test\n");
104 rd_buf
= kmalloc(size
, GFP_KERNEL
);
106 printk(SOLO6010_NAME
": Failed to malloc for p2m_test\n");
111 memset(wr_buf
, P2M_TEST_CHAR
, size
);
112 memset(rd_buf
, P2M_TEST_CHAR
+ 1, size
);
114 solo_p2m_dma(solo_dev
, id
, 1, wr_buf
, base
, size
);
115 solo_p2m_dma(solo_dev
, id
, 0, rd_buf
, base
, size
);
117 for (i
= 0; i
< size
; i
++)
118 if (wr_buf
[i
] != rd_buf
[i
])
127 #define TEST_CHUNK_SIZE (8 * 1024)
129 static void run_p2m_test(struct solo6010_dev
*solo_dev
)
131 unsigned long long errs
= 0;
132 u32 size
= SOLO_JPEG_EXT_ADDR(solo_dev
) + SOLO_JPEG_EXT_SIZE(solo_dev
);
135 printk(KERN_WARNING
"%s: Testing %u bytes of external ram\n",
136 SOLO6010_NAME
, size
);
138 for (i
= 0; i
< size
; i
+= TEST_CHUNK_SIZE
)
139 for (d
= 0; d
< 4; d
++)
140 errs
+= p2m_test(solo_dev
, d
, i
, TEST_CHUNK_SIZE
);
142 printk(KERN_WARNING
"%s: Found %llu errors during p2m test\n",
143 SOLO6010_NAME
, errs
);
148 #define run_p2m_test(__solo) do{}while(0)
151 void solo_p2m_isr(struct solo6010_dev
*solo_dev
, int id
)
153 solo_reg_write(solo_dev
, SOLO_IRQ_STAT
, SOLO_IRQ_P2M(id
));
154 complete(&solo_dev
->p2m_dev
[id
].completion
);
157 void solo_p2m_error_isr(struct solo6010_dev
*solo_dev
, u32 status
)
159 struct solo_p2m_dev
*p2m_dev
;
162 if (!(status
& SOLO_PCI_ERR_P2M
))
165 for (i
= 0; i
< SOLO_NR_P2M
; i
++) {
166 p2m_dev
= &solo_dev
->p2m_dev
[i
];
168 solo_reg_write(solo_dev
, SOLO_P2M_CONTROL(i
), 0);
169 complete(&p2m_dev
->completion
);
173 void solo_p2m_exit(struct solo6010_dev
*solo_dev
)
177 for (i
= 0; i
< SOLO_NR_P2M
; i
++)
178 solo6010_irq_off(solo_dev
, SOLO_IRQ_P2M(i
));
181 int solo_p2m_init(struct solo6010_dev
*solo_dev
)
183 struct solo_p2m_dev
*p2m_dev
;
186 for (i
= 0; i
< SOLO_NR_P2M
; i
++) {
187 p2m_dev
= &solo_dev
->p2m_dev
[i
];
189 init_MUTEX(&p2m_dev
->sem
);
190 init_completion(&p2m_dev
->completion
);
192 solo_reg_write(solo_dev
, SOLO_P2M_DES_ADR(i
),
193 __pa(p2m_dev
->desc
));
195 solo_reg_write(solo_dev
, SOLO_P2M_CONTROL(i
), 0);
196 solo_reg_write(solo_dev
, SOLO_P2M_CONFIG(i
),
197 SOLO_P2M_CSC_16BIT_565
|
198 SOLO_P2M_DMA_INTERVAL(0) |
199 SOLO_P2M_PCI_MASTER_MODE
);
200 solo6010_irq_on(solo_dev
, SOLO_IRQ_P2M(i
));
203 run_p2m_test(solo_dev
);